3DPrinting/PrusaSlicer-NonPlainar
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

Merge branch 'vb_admesh_fix'

Browse source
This commit is contained in:
bubnikv 2019-06-18 08:54:50 +02:00
commit c95a324c3f
36 changed files with 2313 additions and 2894 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
CMakeLists.txt
View file

@ -60,7 +60,7 @@ if (MSVC)
# /bigobj (Increase Number of Sections in .Obj file)
# error C3859: virtual memory range for PCH exceeded; please recompile with a command line option of '-Zm90' or greater
# Generate symbols at every build target, even for the release.
add_compile_options(-bigobj -Zm316 /Zi)
add_compile_options(-bigobj -Zm520 /Zi)
endif ()
# Display and check CMAKE_PREFIX_PATH

11
src/PrusaSlicer.cpp
View file

@ -7,10 +7,13 @@
#include <Windows.h>
#include <wchar.h>
#ifdef SLIC3R_GUI
extern "C"
{
// Let the NVIDIA and AMD know we want to use their graphics card
// on a dual graphics card system.
__declspec(dllexport) DWORD NvOptimusEnablement = 0x00000001;
__declspec(dllexport) int AmdPowerXpressRequestHighPerformance = 1;
}
#endif /* SLIC3R_GUI */
#endif /* WIN32 */
@ -241,8 +244,7 @@ int CLI::run(int argc, char **argv)
} else if (opt_key == "cut" || opt_key == "cut_x" || opt_key == "cut_y") {
std::vector<Model> new_models;
for (auto &model : m_models) {
model.repair();
model.translate(0, 0, -model.bounding_box().min.z()); // align to z = 0
model.translate(0, 0, -model.bounding_box().min.z()); // align to z = 0
size_t num_objects = model.objects.size();
for (size_t i = 0; i < num_objects; ++ i) {
@ -301,8 +303,9 @@ int CLI::run(int argc, char **argv)
}
}
} else if (opt_key == "repair") {
for (auto &model : m_models)
model.repair();
// Models are repaired by default.
//for (auto &model : m_models)
// model.repair();
} else {
boost::nowide::cerr << "error: option not implemented yet: " << opt_key << std::endl;
return 1;

3
src/PrusaSlicer_app_msvc.cpp
View file

@ -8,10 +8,13 @@
#include <wchar.h>
#ifdef SLIC3R_GUI
extern "C"
{
// Let the NVIDIA and AMD know we want to use their graphics card
// on a dual graphics card system.
__declspec(dllexport) DWORD NvOptimusEnablement = 0x00000001;
__declspec(dllexport) int AmdPowerXpressRequestHighPerformance = 1;
}
#endif /* SLIC3R_GUI */
#include <stdlib.h>

1541
src/admesh/connect.cpp
View file

File diff suppressed because it is too large Load diff

421
src/admesh/normals.cpp
View file

@ -25,271 +25,214 @@
#include <string.h>
#include <math.h>
// Boost pool: Don't use mutexes to synchronize memory allocation.
#define BOOST_POOL_NO_MT
#include <boost/pool/object_pool.hpp>
#include "stl.h"
static int stl_check_normal_vector(stl_file *stl, int facet_num, int normal_fix_flag);
static void reverse_facet(stl_file *stl, int facet_num)
{
++ stl->stats.facets_reversed;
static void
stl_reverse_facet(stl_file *stl, int facet_num) {
stl_vertex tmp_vertex;
/* int tmp_neighbor;*/
int neighbor[3];
int vnot[3];
int neighbor[3] = { stl->neighbors_start[facet_num].neighbor[0], stl->neighbors_start[facet_num].neighbor[1], stl->neighbors_start[facet_num].neighbor[2] };
int vnot[3] = { stl->neighbors_start[facet_num].which_vertex_not[0], stl->neighbors_start[facet_num].which_vertex_not[1], stl->neighbors_start[facet_num].which_vertex_not[2] };
stl->stats.facets_reversed += 1;
// reverse the facet
stl_vertex tmp_vertex = stl->facet_start[facet_num].vertex[0];
stl->facet_start[facet_num].vertex[0] = stl->facet_start[facet_num].vertex[1];
stl->facet_start[facet_num].vertex[1] = tmp_vertex;
neighbor[0] = stl->neighbors_start[facet_num].neighbor[0];
neighbor[1] = stl->neighbors_start[facet_num].neighbor[1];
neighbor[2] = stl->neighbors_start[facet_num].neighbor[2];
vnot[0] = stl->neighbors_start[facet_num].which_vertex_not[0];
vnot[1] = stl->neighbors_start[facet_num].which_vertex_not[1];
vnot[2] = stl->neighbors_start[facet_num].which_vertex_not[2];
// fix the vnots of the neighboring facets
if (neighbor[0] != -1)
stl->neighbors_start[neighbor[0]].which_vertex_not[(vnot[0] + 1) % 3] = (stl->neighbors_start[neighbor[0]].which_vertex_not[(vnot[0] + 1) % 3] + 3) % 6;
if (neighbor[1] != -1)
stl->neighbors_start[neighbor[1]].which_vertex_not[(vnot[1] + 1) % 3] = (stl->neighbors_start[neighbor[1]].which_vertex_not[(vnot[1] + 1) % 3] + 4) % 6;
if (neighbor[2] != -1)
stl->neighbors_start[neighbor[2]].which_vertex_not[(vnot[2] + 1) % 3] = (stl->neighbors_start[neighbor[2]].which_vertex_not[(vnot[2] + 1) % 3] + 2) % 6;
/* reverse the facet */
tmp_vertex = stl->facet_start[facet_num].vertex[0];
stl->facet_start[facet_num].vertex[0] =
stl->facet_start[facet_num].vertex[1];
stl->facet_start[facet_num].vertex[1] = tmp_vertex;
// swap the neighbors of the facet that is being reversed
stl->neighbors_start[facet_num].neighbor[1] = neighbor[2];
stl->neighbors_start[facet_num].neighbor[2] = neighbor[1];
/* fix the vnots of the neighboring facets */
if(neighbor[0] != -1)
stl->neighbors_start[neighbor[0]].which_vertex_not[(vnot[0] + 1) % 3] =
(stl->neighbors_start[neighbor[0]].
which_vertex_not[(vnot[0] + 1) % 3] + 3) % 6;
if(neighbor[1] != -1)
stl->neighbors_start[neighbor[1]].which_vertex_not[(vnot[1] + 1) % 3] =
(stl->neighbors_start[neighbor[1]].
which_vertex_not[(vnot[1] + 1) % 3] + 4) % 6;
if(neighbor[2] != -1)
stl->neighbors_start[neighbor[2]].which_vertex_not[(vnot[2] + 1) % 3] =
(stl->neighbors_start[neighbor[2]].
which_vertex_not[(vnot[2] + 1) % 3] + 2) % 6;
// swap the vnots of the facet that is being reversed
stl->neighbors_start[facet_num].which_vertex_not[1] = vnot[2];
stl->neighbors_start[facet_num].which_vertex_not[2] = vnot[1];
/* swap the neighbors of the facet that is being reversed */
stl->neighbors_start[facet_num].neighbor[1] = neighbor[2];
stl->neighbors_start[facet_num].neighbor[2] = neighbor[1];
/* swap the vnots of the facet that is being reversed */
stl->neighbors_start[facet_num].which_vertex_not[1] = vnot[2];
stl->neighbors_start[facet_num].which_vertex_not[2] = vnot[1];
/* reverse the values of the vnots of the facet that is being reversed */
stl->neighbors_start[facet_num].which_vertex_not[0] =
(stl->neighbors_start[facet_num].which_vertex_not[0] + 3) % 6;
stl->neighbors_start[facet_num].which_vertex_not[1] =
(stl->neighbors_start[facet_num].which_vertex_not[1] + 3) % 6;
stl->neighbors_start[facet_num].which_vertex_not[2] =
(stl->neighbors_start[facet_num].which_vertex_not[2] + 3) % 6;
// reverse the values of the vnots of the facet that is being reversed
stl->neighbors_start[facet_num].which_vertex_not[0] = (stl->neighbors_start[facet_num].which_vertex_not[0] + 3) % 6;
stl->neighbors_start[facet_num].which_vertex_not[1] = (stl->neighbors_start[facet_num].which_vertex_not[1] + 3) % 6;
stl->neighbors_start[facet_num].which_vertex_not[2] = (stl->neighbors_start[facet_num].which_vertex_not[2] + 3) % 6;
}
void
stl_fix_normal_directions(stl_file *stl) {
char *norm_sw;
/* int edge_num;*/
/* int vnot;*/
int checked = 0;
int facet_num;
/* int next_facet;*/
int i;
int j;
struct stl_normal {
int facet_num;
struct stl_normal *next;
};
struct stl_normal *head;
struct stl_normal *tail;
struct stl_normal *newn;
struct stl_normal *temp;
// Returns true if the normal was flipped.
static bool check_normal_vector(stl_file *stl, int facet_num, int normal_fix_flag)
{
stl_facet *facet = &stl->facet_start[facet_num];
int* reversed_ids;
int reversed_count = 0;
int id;
int force_exit = 0;
stl_normal normal;
stl_calculate_normal(normal, facet);
stl_normalize_vector(normal);
stl_normal normal_dif = (normal - facet->normal).cwiseAbs();
if (stl->error) return;
const float eps = 0.001f;
if (normal_dif(0) < eps && normal_dif(1) < eps && normal_dif(2) < eps) {
// Normal is within tolerance. It is not really necessary to change the values here, but just for consistency, I will.
facet->normal = normal;
return false;
}
// this may happen for malformed models, see: https://github.com/prusa3d/PrusaSlicer/issues/2209
if (stl->stats.number_of_facets == 0) return;
stl_normal test_norm = facet->normal;
stl_normalize_vector(test_norm);
normal_dif = (normal - test_norm).cwiseAbs();
if (normal_dif(0) < eps && normal_dif(1) < eps && normal_dif(2) < eps) {
// The normal is not within tolerance, but direction is OK.
if (normal_fix_flag) {
facet->normal = normal;
++ stl->stats.normals_fixed;
}
return false;
}
/* Initialize linked list. */
head = (struct stl_normal*)malloc(sizeof(struct stl_normal));
if(head == NULL) perror("stl_fix_normal_directions");
tail = (struct stl_normal*)malloc(sizeof(struct stl_normal));
if(tail == NULL) perror("stl_fix_normal_directions");
head->next = tail;
tail->next = tail;
/* Initialize list that keeps track of already fixed facets. */
norm_sw = (char*)calloc(stl->stats.number_of_facets, sizeof(char));
if(norm_sw == NULL) perror("stl_fix_normal_directions");
/* Initialize list that keeps track of reversed facets. */
reversed_ids = (int*)calloc(stl->stats.number_of_facets, sizeof(int));
if (reversed_ids == NULL) perror("stl_fix_normal_directions reversed_ids");
facet_num = 0;
/* If normal vector is not within tolerance and backwards:
Arbitrarily starts at face 0. If this one is wrong, we're screwed. Thankfully, the chances
of it being wrong randomly are low if most of the triangles are right: */
if (stl_check_normal_vector(stl, 0, 0) == 2) {
stl_reverse_facet(stl, 0);
reversed_ids[reversed_count++] = 0;
}
/* Say that we've fixed this facet: */
norm_sw[facet_num] = 1;
checked++;
for(;;) {
/* Add neighbors_to_list.
Add unconnected neighbors to the list:a */
for(j = 0; j < 3; j++) {
/* Reverse the neighboring facets if necessary. */
if(stl->neighbors_start[facet_num].which_vertex_not[j] > 2) {
/* If the facet has a neighbor that is -1, it means that edge isn't shared by another facet */
if(stl->neighbors_start[facet_num].neighbor[j] != -1) {
if (norm_sw[stl->neighbors_start[facet_num].neighbor[j]] == 1) {
/* trying to modify a facet already marked as fixed, revert all changes made until now and exit (fixes: #716, #574, #413, #269, #262, #259, #230, #228, #206) */
for (id = reversed_count - 1; id >= 0; --id) {
stl_reverse_facet(stl, reversed_ids[id]);
}
force_exit = 1;
break;
} else {
stl_reverse_facet(stl, stl->neighbors_start[facet_num].neighbor[j]);
reversed_ids[reversed_count++] = stl->neighbors_start[facet_num].neighbor[j];
}
}
}
/* If this edge of the facet is connected: */
if(stl->neighbors_start[facet_num].neighbor[j] != -1) {
/* If we haven't fixed this facet yet, add it to the list: */
if(norm_sw[stl->neighbors_start[facet_num].neighbor[j]] != 1) {
/* Add node to beginning of list. */
newn = (struct stl_normal*)malloc(sizeof(struct stl_normal));
if(newn == NULL) perror("stl_fix_normal_directions");
newn->facet_num = stl->neighbors_start[facet_num].neighbor[j];
newn->next = head->next;
head->next = newn;
}
}
}
/* an error occourred, quit the for loop and exit */
if (force_exit) break;
/* Get next facet to fix from top of list. */
if(head->next != tail) {
facet_num = head->next->facet_num;
if(norm_sw[facet_num] != 1) { /* If facet is in list mutiple times */
norm_sw[facet_num] = 1; /* Record this one as being fixed. */
checked++;
}
temp = head->next; /* Delete this facet from the list. */
head->next = head->next->next;
free(temp);
} else { /* if we ran out of facets to fix: */
/* All of the facets in this part have been fixed. */
stl->stats.number_of_parts += 1;
if(checked >= stl->stats.number_of_facets) {
/* All of the facets have been checked. Bail out. */
break;
} else {
/* There is another part here. Find it and continue. */
for(i = 0; i < stl->stats.number_of_facets; i++) {
if(norm_sw[i] == 0) {
/* This is the first facet of the next part. */
facet_num = i;
if(stl_check_normal_vector(stl, i, 0) == 2) {
stl_reverse_facet(stl, i);
reversed_ids[reversed_count++] = i;
}
norm_sw[facet_num] = 1;
checked++;
break;
}
}
}
}
}
free(head);
free(tail);
free(reversed_ids);
free(norm_sw);
test_norm *= -1.f;
normal_dif = (normal - test_norm).cwiseAbs();
if (normal_dif(0) < eps && normal_dif(1) < eps && normal_dif(2) < eps) {
// The normal is not within tolerance and backwards.
if (normal_fix_flag) {
facet->normal = normal;
++ stl->stats.normals_fixed;
}
return true;
}
if (normal_fix_flag) {
facet->normal = normal;
++ stl->stats.normals_fixed;
}
// Status is unknown.
return false;
}
static int stl_check_normal_vector(stl_file *stl, int facet_num, int normal_fix_flag) {
/* Returns 0 if the normal is within tolerance */
/* Returns 1 if the normal is not within tolerance, but direction is OK */
/* Returns 2 if the normal is not within tolerance and backwards */
/* Returns 4 if the status is unknown. */
void stl_fix_normal_directions(stl_file *stl)
{
// This may happen for malformed models, see: https://github.com/prusa3d/PrusaSlicer/issues/2209
if (stl->stats.number_of_facets == 0)
return;
stl_facet *facet;
struct stl_normal {
int facet_num;
stl_normal *next;
};
facet = &stl->facet_start[facet_num];
// Initialize linked list.
boost::object_pool<stl_normal> pool;
stl_normal *head = pool.construct();
stl_normal *tail = pool.construct();
head->next = tail;
tail->next = tail;
stl_normal normal;
stl_calculate_normal(normal, facet);
stl_normalize_vector(normal);
stl_normal normal_dif = (normal - facet->normal).cwiseAbs();
// Initialize list that keeps track of already fixed facets.
std::vector<char> norm_sw(stl->stats.number_of_facets, 0);
// Initialize list that keeps track of reversed facets.
std::vector<int> reversed_ids(stl->stats.number_of_facets, 0);
const float eps = 0.001f;
if (normal_dif(0) < eps && normal_dif(1) < eps && normal_dif(2) < eps) {
/* It is not really necessary to change the values here */
/* but just for consistency, I will. */
facet->normal = normal;
return 0;
}
int facet_num = 0;
int reversed_count = 0;
// If normal vector is not within tolerance and backwards:
// Arbitrarily starts at face 0. If this one is wrong, we're screwed. Thankfully, the chances
// of it being wrong randomly are low if most of the triangles are right:
if (check_normal_vector(stl, 0, 0)) {
reverse_facet(stl, 0);
reversed_ids[reversed_count ++] = 0;
}
stl_normal test_norm = facet->normal;
stl_normalize_vector(test_norm);
normal_dif = (normal - test_norm).cwiseAbs();
if (normal_dif(0) < eps && normal_dif(1) < eps && normal_dif(2) < eps) {
if(normal_fix_flag) {
facet->normal = normal;
stl->stats.normals_fixed += 1;
}
return 1;
}
// Say that we've fixed this facet:
norm_sw[facet_num] = 1;
int checked = 1;
test_norm *= -1.f;
normal_dif = (normal - test_norm).cwiseAbs();
if (normal_dif(0) < eps && normal_dif(1) < eps && normal_dif(2) < eps) {
// Facet is backwards.
if(normal_fix_flag) {
facet->normal = normal;
stl->stats.normals_fixed += 1;
}
return 2;
}
if(normal_fix_flag) {
facet->normal = normal;
stl->stats.normals_fixed += 1;
}
return 4;
for (;;) {
// Add neighbors_to_list. Add unconnected neighbors to the list.
bool force_exit = false;
for (int j = 0; j < 3; ++ j) {
// Reverse the neighboring facets if necessary.
if (stl->neighbors_start[facet_num].which_vertex_not[j] > 2) {
// If the facet has a neighbor that is -1, it means that edge isn't shared by another facet
if (stl->neighbors_start[facet_num].neighbor[j] != -1) {
if (norm_sw[stl->neighbors_start[facet_num].neighbor[j]] == 1) {
// trying to modify a facet already marked as fixed, revert all changes made until now and exit (fixes: #716, #574, #413, #269, #262, #259, #230, #228, #206)
for (int id = reversed_count - 1; id >= 0; -- id)
reverse_facet(stl, reversed_ids[id]);
force_exit = true;
break;
}
reverse_facet(stl, stl->neighbors_start[facet_num].neighbor[j]);
reversed_ids[reversed_count ++] = stl->neighbors_start[facet_num].neighbor[j];
}
}
// If this edge of the facet is connected:
if (stl->neighbors_start[facet_num].neighbor[j] != -1) {
// If we haven't fixed this facet yet, add it to the list:
if (norm_sw[stl->neighbors_start[facet_num].neighbor[j]] != 1) {
// Add node to beginning of list.
stl_normal *newn = pool.construct();
newn->facet_num = stl->neighbors_start[facet_num].neighbor[j];
newn->next = head->next;
head->next = newn;
}
}
}
// an error occourred, quit the for loop and exit
if (force_exit)
break;
// Get next facet to fix from top of list.
if (head->next != tail) {
facet_num = head->next->facet_num;
if (norm_sw[facet_num] != 1) { // If facet is in list mutiple times
norm_sw[facet_num] = 1; // Record this one as being fixed.
++ checked;
}
stl_normal *temp = head->next; // Delete this facet from the list.
head->next = head->next->next;
// pool.destroy(temp);
} else { // If we ran out of facets to fix: All of the facets in this part have been fixed.
++ stl->stats.number_of_parts;
if (checked >= stl->stats.number_of_facets)
// All of the facets have been checked. Bail out.
break;
// There is another part here. Find it and continue.
for (uint32_t i = 0; i < stl->stats.number_of_facets; ++ i)
if (norm_sw[i] == 0) {
// This is the first facet of the next part.
facet_num = i;
if (check_normal_vector(stl, i, 0)) {
reverse_facet(stl, i);
reversed_ids[reversed_count++] = i;
}
norm_sw[facet_num] = 1;
++ checked;
break;
}
}
}
// pool.destroy(head);
// pool.destroy(tail);
}
void stl_fix_normal_values(stl_file *stl) {
int i;
if (stl->error) return;
for(i = 0; i < stl->stats.number_of_facets; i++) {
stl_check_normal_vector(stl, i, 1);
}
void stl_fix_normal_values(stl_file *stl)
{
for (uint32_t i = 0; i < stl->stats.number_of_facets; ++ i)
check_normal_vector(stl, i, 1);
}
void stl_reverse_all_facets(stl_file *stl)
{
if (stl->error)
return;
stl_normal normal;
for(int i = 0; i < stl->stats.number_of_facets; i++) {
stl_reverse_facet(stl, i);
stl_calculate_normal(normal, &stl->facet_start[i]);
stl_normalize_vector(normal);
stl->facet_start[i].normal = normal;
}
stl_normal normal;
for (uint32_t i = 0; i < stl->stats.number_of_facets; ++ i) {
reverse_facet(stl, i);
stl_calculate_normal(normal, &stl->facet_start[i]);
stl_normalize_vector(normal);
stl->facet_start[i].normal = normal;
}
}

435
src/admesh/shared.cpp
View file

@ -23,242 +23,237 @@
#include <stdlib.h>
#include <string.h>
#include <vector>
#include <boost/log/trivial.hpp>
#include <boost/nowide/cstdio.hpp>
#include "stl.h"
void
stl_invalidate_shared_vertices(stl_file *stl) {
if (stl->error) return;
void stl_generate_shared_vertices(stl_file *stl, indexed_triangle_set &its)
{
// 3 indices to vertex per face
its.indices.assign(stl->stats.number_of_facets, stl_triangle_vertex_indices(-1, -1, -1));
// Shared vertices (3D coordinates)
its.vertices.clear();
its.vertices.reserve(stl->stats.number_of_facets / 2);
if (stl->v_indices != NULL) {
free(stl->v_indices);
stl->v_indices = NULL;
}
if (stl->v_shared != NULL) {
free(stl->v_shared);
stl->v_shared = NULL;
}
// A degenerate mesh may contain loops: Traversing a fan will end up in an endless loop
// while never reaching the starting face. To avoid these endless loops, traversed faces at each fan traversal
// are marked with a unique fan_traversal_stamp.
unsigned int fan_traversal_stamp = 0;
std::vector<unsigned int> fan_traversal_facet_visited(stl->stats.number_of_facets, 0);
for (uint32_t facet_idx = 0; facet_idx < stl->stats.number_of_facets; ++ facet_idx) {
for (int j = 0; j < 3; ++ j) {
if (its.indices[facet_idx][j] != -1)
// Shared vertex was already assigned.
continue;
// Create a new shared vertex.
its.vertices.emplace_back(stl->facet_start[facet_idx].vertex[j]);
// Traverse the fan around the j-th vertex of the i-th face, assign the newly created shared vertex index to all the neighboring triangles in the triangle fan.
int facet_in_fan_idx = facet_idx;
bool edge_direction = false;
bool traversal_reversed = false;
int vnot = (j + 2) % 3;
// Increase the
++ fan_traversal_stamp;
for (;;) {
// Next edge on facet_in_fan_idx to be traversed. The edge is indexed by its starting vertex index.
int next_edge = 0;
// Vertex index in facet_in_fan_idx, which is being pivoted around, and which is being assigned a new shared vertex.
int pivot_vertex = 0;
if (vnot > 2) {
// The edge of facet_in_fan_idx opposite to vnot is equally oriented, therefore
// the neighboring facet is flipped.
if (! edge_direction) {
pivot_vertex = (vnot + 2) % 3;
next_edge = pivot_vertex;
} else {
pivot_vertex = (vnot + 1) % 3;
next_edge = vnot % 3;
}
edge_direction = ! edge_direction;
} else {
// The neighboring facet is correctly oriented.
if (! edge_direction) {
pivot_vertex = (vnot + 1) % 3;
next_edge = vnot;
} else {
pivot_vertex = (vnot + 2) % 3;
next_edge = pivot_vertex;
}
}
its.indices[facet_in_fan_idx][pivot_vertex] = its.vertices.size() - 1;
fan_traversal_facet_visited[facet_in_fan_idx] = fan_traversal_stamp;
// next_edge is an index of the starting vertex of the edge, not an index of the opposite vertex to the edge!
int next_facet = stl->neighbors_start[facet_in_fan_idx].neighbor[next_edge];
if (next_facet == -1) {
// No neighbor going in the current direction.
if (traversal_reversed) {
// Went to one limit, then turned back and reached the other limit. Quit the fan traversal.
break;
} else {
// Reached the first limit. Now try to reverse and traverse up to the other limit.
edge_direction = true;
vnot = (j + 1) % 3;
traversal_reversed = true;
facet_in_fan_idx = facet_idx;
}
} else if (next_facet == facet_idx) {
// Traversed a closed fan all around.
// assert(! traversal_reversed);
break;
} else if (next_facet >= (int)stl->stats.number_of_facets) {
// The mesh is not valid!
// assert(false);
break;
} else if (fan_traversal_facet_visited[next_facet] == fan_traversal_stamp) {
// Traversed a closed fan all around, but did not reach the starting face.
// This indicates an invalid geometry (non-manifold).
//assert(false);
break;
} else {
// Continue traversal.
// next_edge is an index of the starting vertex of the edge, not an index of the opposite vertex to the edge!
vnot = stl->neighbors_start[facet_in_fan_idx].which_vertex_not[next_edge];
facet_in_fan_idx = next_facet;
}
}
}
}
}
void
stl_generate_shared_vertices(stl_file *stl) {
int i;
int j;
int first_facet;
int direction;
int facet_num;
int vnot;
int next_edge;
int pivot_vertex;
int next_facet;
int reversed;
bool its_write_off(const indexed_triangle_set &its, const char *file)
{
/* Open the file */
FILE *fp = boost::nowide::fopen(file, "w");
if (fp == nullptr) {
BOOST_LOG_TRIVIAL(error) << "stl_write_ascii: Couldn't open " << file << " for writing";
return false;
}
if (stl->error) return;
fprintf(fp, "OFF\n");
fprintf(fp, "%d %d 0\n", (int)its.vertices.size(), (int)its.indices.size());
for (int i = 0; i < its.vertices.size(); ++ i)
fprintf(fp, "\t%f %f %f\n", its.vertices[i](0), its.vertices[i](1), its.vertices[i](2));
for (uint32_t i = 0; i < its.indices.size(); ++ i)
fprintf(fp, "\t3 %d %d %d\n", its.indices[i][0], its.indices[i][1], its.indices[i][2]);
fclose(fp);
return true;
}
/* make sure this function is idempotent and does not leak memory */
stl_invalidate_shared_vertices(stl);
bool its_write_vrml(const indexed_triangle_set &its, const char *file)
{
/* Open the file */
FILE *fp = boost::nowide::fopen(file, "w");
if (fp == nullptr) {
BOOST_LOG_TRIVIAL(error) << "stl_write_vrml: Couldn't open " << file << " for writing";
return false;
}
stl->v_indices = (v_indices_struct*)
calloc(stl->stats.number_of_facets, sizeof(v_indices_struct));
if(stl->v_indices == NULL) perror("stl_generate_shared_vertices");
stl->v_shared = (stl_vertex*)
calloc((stl->stats.number_of_facets / 2), sizeof(stl_vertex));
if(stl->v_shared == NULL) perror("stl_generate_shared_vertices");
stl->stats.shared_malloced = stl->stats.number_of_facets / 2;
stl->stats.shared_vertices = 0;
fprintf(fp, "#VRML V1.0 ascii\n\n");
fprintf(fp, "Separator {\n");
fprintf(fp, "\tDEF STLShape ShapeHints {\n");
fprintf(fp, "\t\tvertexOrdering COUNTERCLOCKWISE\n");
fprintf(fp, "\t\tfaceType CONVEX\n");
fprintf(fp, "\t\tshapeType SOLID\n");
fprintf(fp, "\t\tcreaseAngle 0.0\n");
fprintf(fp, "\t}\n");
fprintf(fp, "\tDEF STLModel Separator {\n");
fprintf(fp, "\t\tDEF STLColor Material {\n");
fprintf(fp, "\t\t\temissiveColor 0.700000 0.700000 0.000000\n");
fprintf(fp, "\t\t}\n");
fprintf(fp, "\t\tDEF STLVertices Coordinate3 {\n");
fprintf(fp, "\t\t\tpoint [\n");
for(i = 0; i < stl->stats.number_of_facets; i++) {
stl->v_indices[i].vertex[0] = -1;
stl->v_indices[i].vertex[1] = -1;
stl->v_indices[i].vertex[2] = -1;
}
int i = 0;
for (; i + 1 < its.vertices.size(); ++ i)
fprintf(fp, "\t\t\t\t%f %f %f,\n", its.vertices[i](0), its.vertices[i](1), its.vertices[i](2));
fprintf(fp, "\t\t\t\t%f %f %f]\n", its.vertices[i](0), its.vertices[i](1), its.vertices[i](2));
fprintf(fp, "\t\t}\n");
fprintf(fp, "\t\tDEF STLTriangles IndexedFaceSet {\n");
fprintf(fp, "\t\t\tcoordIndex [\n");
for (size_t i = 0; i + 1 < its.indices.size(); ++ i)
fprintf(fp, "\t\t\t\t%d, %d, %d, -1,\n", its.indices[i][0], its.indices[i][1], its.indices[i][2]);
fprintf(fp, "\t\t\t\t%d, %d, %d, -1]\n", its.indices[i][0], its.indices[i][1], its.indices[i][2]);
fprintf(fp, "\t\t}\n");
fprintf(fp, "\t}\n");
fprintf(fp, "}\n");
fclose(fp);
return true;
}
bool its_write_obj(const indexed_triangle_set &its, const char *file)
{
FILE *fp = boost::nowide::fopen(file, "w");
if (fp == nullptr) {
BOOST_LOG_TRIVIAL(error) << "stl_write_obj: Couldn't open " << file << " for writing";
return false;
}
for (size_t i = 0; i < its.vertices.size(); ++ i)
fprintf(fp, "v %f %f %f\n", its.vertices[i](0), its.vertices[i](1), its.vertices[i](2));
for (size_t i = 0; i < its.indices.size(); ++ i)
fprintf(fp, "f %d %d %d\n", its.indices[i][0]+1, its.indices[i][1]+1, its.indices[i][2]+1);
fclose(fp);
return true;
}
for(i = 0; i < stl->stats.number_of_facets; i++) {
first_facet = i;
for(j = 0; j < 3; j++) {
if(stl->v_indices[i].vertex[j] != -1) {
continue;
}
if(stl->stats.shared_vertices == stl->stats.shared_malloced) {
stl->stats.shared_malloced += 1024;
stl->v_shared = (stl_vertex*)realloc(stl->v_shared,
stl->stats.shared_malloced * sizeof(stl_vertex));
if(stl->v_shared == NULL) perror("stl_generate_shared_vertices");
}
// Check validity of the mesh, assert on error.
bool stl_validate(const stl_file *stl, const indexed_triangle_set &its)
{
assert(! stl->facet_start.empty());
assert(stl->facet_start.size() == stl->stats.number_of_facets);
assert(stl->neighbors_start.size() == stl->stats.number_of_facets);
assert(stl->facet_start.size() == stl->neighbors_start.size());
assert(! stl->neighbors_start.empty());
assert((its.indices.empty()) == (its.vertices.empty()));
assert(stl->stats.number_of_facets > 0);
assert(its.vertices.empty() || its.indices.size() == stl->stats.number_of_facets);
stl->v_shared[stl->stats.shared_vertices] =
stl->facet_start[i].vertex[j];
direction = 0;
reversed = 0;
facet_num = i;
vnot = (j + 2) % 3;
for(;;) {
if(vnot > 2) {
if(direction == 0) {
pivot_vertex = (vnot + 2) % 3;
next_edge = pivot_vertex;
direction = 1;
} else {
pivot_vertex = (vnot + 1) % 3;
next_edge = vnot % 3;
direction = 0;
}
} else {
if(direction == 0) {
pivot_vertex = (vnot + 1) % 3;
next_edge = vnot;
} else {
pivot_vertex = (vnot + 2) % 3;
next_edge = pivot_vertex;
}
#ifdef _DEBUG
// Verify validity of neighborship data.
for (int facet_idx = 0; facet_idx < (int)stl->stats.number_of_facets; ++ facet_idx) {
const stl_neighbors &nbr = stl->neighbors_start[facet_idx];
const int *vertices = its.indices.empty() ? nullptr : its.indices[facet_idx].data();
for (int nbr_idx = 0; nbr_idx < 3; ++ nbr_idx) {
int nbr_face = stl->neighbors_start[facet_idx].neighbor[nbr_idx];
assert(nbr_face < (int)stl->stats.number_of_facets);
if (nbr_face != -1) {
int nbr_vnot = nbr.which_vertex_not[nbr_idx];
assert(nbr_vnot >= 0 && nbr_vnot < 6);
// Neighbor of the neighbor is the original face.
assert(stl->neighbors_start[nbr_face].neighbor[(nbr_vnot + 1) % 3] == facet_idx);
int vnot_back = stl->neighbors_start[nbr_face].which_vertex_not[(nbr_vnot + 1) % 3];
assert(vnot_back >= 0 && vnot_back < 6);
assert((nbr_vnot < 3) == (vnot_back < 3));
assert(vnot_back % 3 == (nbr_idx + 2) % 3);
if (vertices != nullptr) {
// Has shared vertices.
if (nbr_vnot < 3) {
// Faces facet_idx and nbr_face share two vertices accross the common edge. Faces are correctly oriented.
assert((its.indices[nbr_face][(nbr_vnot + 1) % 3] == vertices[(nbr_idx + 1) % 3] && its.indices[nbr_face][(nbr_vnot + 2) % 3] == vertices[nbr_idx]));
} else {
// Faces facet_idx and nbr_face share two vertices accross the common edge. Faces are incorrectly oriented, one of them is flipped.
assert((its.indices[nbr_face][(nbr_vnot + 2) % 3] == vertices[(nbr_idx + 1) % 3] && its.indices[nbr_face][(nbr_vnot + 1) % 3] == vertices[nbr_idx]));
}
}
}
}
stl->v_indices[facet_num].vertex[pivot_vertex] =
stl->stats.shared_vertices;
next_facet = stl->neighbors_start[facet_num].neighbor[next_edge];
if(next_facet == -1) {
if(reversed) {
break;
} else {
direction = 1;
vnot = (j + 1) % 3;
reversed = 1;
facet_num = first_facet;
}
} else if(next_facet != first_facet) {
vnot = stl->neighbors_start[facet_num].
which_vertex_not[next_edge];
facet_num = next_facet;
} else {
break;
}
}
stl->stats.shared_vertices += 1;
}
}
#endif /* _DEBUG */
return true;
}
void
stl_write_off(stl_file *stl, const char *file) {
int i;
FILE *fp;
char *error_msg;
if (stl->error) return;
/* Open the file */
fp = boost::nowide::fopen(file, "w");
if(fp == NULL) {
error_msg = (char*)
malloc(81 + strlen(file)); /* Allow 80 chars+file size for message */
sprintf(error_msg, "stl_write_ascii: Couldn't open %s for writing",
file);
perror(error_msg);
free(error_msg);
stl->error = 1;
return;
}
fprintf(fp, "OFF\n");
fprintf(fp, "%d %d 0\n",
stl->stats.shared_vertices, stl->stats.number_of_facets);
for(i = 0; i < stl->stats.shared_vertices; i++) {
fprintf(fp, "\t%f %f %f\n",
stl->v_shared[i](0), stl->v_shared[i](1), stl->v_shared[i](2));
}
for(i = 0; i < stl->stats.number_of_facets; i++) {
fprintf(fp, "\t3 %d %d %d\n", stl->v_indices[i].vertex[0],
stl->v_indices[i].vertex[1], stl->v_indices[i].vertex[2]);
}
fclose(fp);
}
void
stl_write_vrml(stl_file *stl, const char *file) {
int i;
FILE *fp;
char *error_msg;
if (stl->error) return;
/* Open the file */
fp = boost::nowide::fopen(file, "w");
if(fp == NULL) {
error_msg = (char*)
malloc(81 + strlen(file)); /* Allow 80 chars+file size for message */
sprintf(error_msg, "stl_write_ascii: Couldn't open %s for writing",
file);
perror(error_msg);
free(error_msg);
stl->error = 1;
return;
}
fprintf(fp, "#VRML V1.0 ascii\n\n");
fprintf(fp, "Separator {\n");
fprintf(fp, "\tDEF STLShape ShapeHints {\n");
fprintf(fp, "\t\tvertexOrdering COUNTERCLOCKWISE\n");
fprintf(fp, "\t\tfaceType CONVEX\n");
fprintf(fp, "\t\tshapeType SOLID\n");
fprintf(fp, "\t\tcreaseAngle 0.0\n");
fprintf(fp, "\t}\n");
fprintf(fp, "\tDEF STLModel Separator {\n");
fprintf(fp, "\t\tDEF STLColor Material {\n");
fprintf(fp, "\t\t\temissiveColor 0.700000 0.700000 0.000000\n");
fprintf(fp, "\t\t}\n");
fprintf(fp, "\t\tDEF STLVertices Coordinate3 {\n");
fprintf(fp, "\t\t\tpoint [\n");
for(i = 0; i < (stl->stats.shared_vertices - 1); i++) {
fprintf(fp, "\t\t\t\t%f %f %f,\n",
stl->v_shared[i](0), stl->v_shared[i](1), stl->v_shared[i](2));
}
fprintf(fp, "\t\t\t\t%f %f %f]\n",
stl->v_shared[i](0), stl->v_shared[i](1), stl->v_shared[i](2));
fprintf(fp, "\t\t}\n");
fprintf(fp, "\t\tDEF STLTriangles IndexedFaceSet {\n");
fprintf(fp, "\t\t\tcoordIndex [\n");
for(i = 0; i < (stl->stats.number_of_facets - 1); i++) {
fprintf(fp, "\t\t\t\t%d, %d, %d, -1,\n", stl->v_indices[i].vertex[0],
stl->v_indices[i].vertex[1], stl->v_indices[i].vertex[2]);
}
fprintf(fp, "\t\t\t\t%d, %d, %d, -1]\n", stl->v_indices[i].vertex[0],
stl->v_indices[i].vertex[1], stl->v_indices[i].vertex[2]);
fprintf(fp, "\t\t}\n");
fprintf(fp, "\t}\n");
fprintf(fp, "}\n");
fclose(fp);
}
void stl_write_obj (stl_file *stl, const char *file) {
int i;
FILE* fp;
if (stl->error) return;
/* Open the file */
fp = boost::nowide::fopen(file, "w");
if (fp == NULL) {
char* error_msg = (char*)malloc(81 + strlen(file)); /* Allow 80 chars+file size for message */
sprintf(error_msg, "stl_write_ascii: Couldn't open %s for writing", file);
perror(error_msg);
free(error_msg);
stl->error = 1;
return;
}
for (i = 0; i < stl->stats.shared_vertices; i++) {
fprintf(fp, "v %f %f %f\n", stl->v_shared[i](0), stl->v_shared[i](1), stl->v_shared[i](2));
}
for (i = 0; i < stl->stats.number_of_facets; i++) {
fprintf(fp, "f %d %d %d\n", stl->v_indices[i].vertex[0]+1, stl->v_indices[i].vertex[1]+1, stl->v_indices[i].vertex[2]+1);
}
fclose(fp);
// Check validity of the mesh, assert on error.
bool stl_validate(const stl_file *stl)
{
indexed_triangle_set its;
return stl_validate(stl, its);
}

287
src/admesh/stl.h
View file

@ -27,6 +27,7 @@
#include <stdint.h>
#include <stddef.h>
#include <vector>
#include <Eigen/Geometry>
// Size of the binary STL header, free form.
@ -40,22 +41,23 @@
typedef Eigen::Matrix<float, 3, 1, Eigen::DontAlign> stl_vertex;
typedef Eigen::Matrix<float, 3, 1, Eigen::DontAlign> stl_normal;
typedef Eigen::Matrix<int, 3, 1, Eigen::DontAlign> stl_triangle_vertex_indices;
static_assert(sizeof(stl_vertex) == 12, "size of stl_vertex incorrect");
static_assert(sizeof(stl_normal) == 12, "size of stl_normal incorrect");
struct stl_facet {
stl_normal normal;
stl_vertex vertex[3];
char extra[2];
stl_normal normal;
stl_vertex vertex[3];
char extra[2];
stl_facet rotated(const Eigen::Quaternion<float, Eigen::DontAlign> &rot) {
stl_facet out;
out.normal = rot * this->normal;
out.vertex[0] = rot * this->vertex[0];
out.vertex[1] = rot * this->vertex[1];
out.vertex[2] = rot * this->vertex[2];
return out;
}
stl_facet rotated(const Eigen::Quaternion<float, Eigen::DontAlign> &rot) const {
stl_facet out;
out.normal = rot * this->normal;
out.vertex[0] = rot * this->vertex[0];
out.vertex[1] = rot * this->vertex[1];
out.vertex[2] = rot * this->vertex[2];
return out;
}
};
#define SIZEOF_STL_FACET 50
@ -67,104 +69,94 @@ static_assert(sizeof(stl_facet) >= SIZEOF_STL_FACET, "size of stl_facet incorrec
typedef enum {binary, ascii, inmemory} stl_type;
typedef struct {
stl_vertex p1;
stl_vertex p2;
int facet_number;
} stl_edge;
struct stl_neighbors {
stl_neighbors() { reset(); }
void reset() {
neighbor[0] = -1;
neighbor[1] = -1;
neighbor[2] = -1;
which_vertex_not[0] = -1;
which_vertex_not[1] = -1;
which_vertex_not[2] = -1;
}
int num_neighbors_missing() const { return (this->neighbor[0] == -1) + (this->neighbor[1] == -1) + (this->neighbor[2] == -1); }
int num_neighbors() const { return 3 - this->num_neighbors_missing(); }
typedef struct stl_hash_edge {
// Key of a hash edge: sorted vertices of the edge.
uint32_t key[6];
// Compare two keys.
bool operator==(const stl_hash_edge &rhs) { return memcmp(key, rhs.key, sizeof(key)) == 0; }
bool operator!=(const stl_hash_edge &rhs) { return ! (*this == rhs); }
int hash(int M) const { return ((key[0] / 11 + key[1] / 7 + key[2] / 3) ^ (key[3] / 11 + key[4] / 7 + key[5] / 3)) % M; }
// Index of a facet owning this edge.
int facet_number;
// Index of this edge inside the facet with an index of facet_number.
// If this edge is stored backwards, which_edge is increased by 3.
int which_edge;
struct stl_hash_edge *next;
} stl_hash_edge;
// Index of a neighbor facet.
int neighbor[3];
// Index of an opposite vertex at the neighbor face.
char which_vertex_not[3];
};
typedef struct {
// Index of a neighbor facet.
int neighbor[3];
// Index of an opposite vertex at the neighbor face.
char which_vertex_not[3];
} stl_neighbors;
struct stl_stats {
stl_stats() { this->reset(); }
void reset() { memset(this, 0, sizeof(stl_stats)); this->volume = -1.0; }
char header[81];
stl_type type;
uint32_t number_of_facets;
stl_vertex max;
stl_vertex min;
stl_vertex size;
float bounding_diameter;
float shortest_edge;
float volume;
int connected_edges;
int connected_facets_1_edge;
int connected_facets_2_edge;
int connected_facets_3_edge;
int facets_w_1_bad_edge;
int facets_w_2_bad_edge;
int facets_w_3_bad_edge;
int original_num_facets;
int edges_fixed;
int degenerate_facets;
int facets_removed;
int facets_added;
int facets_reversed;
int backwards_edges;
int normals_fixed;
int number_of_parts;
};
typedef struct {
int vertex[3];
} v_indices_struct;
struct stl_file {
stl_file() {}
typedef struct {
char header[81];
stl_type type;
uint32_t number_of_facets;
stl_vertex max;
stl_vertex min;
stl_vertex size;
float bounding_diameter;
float shortest_edge;
float volume;
unsigned number_of_blocks;
int connected_edges;
int connected_facets_1_edge;
int connected_facets_2_edge;
int connected_facets_3_edge;
int facets_w_1_bad_edge;
int facets_w_2_bad_edge;
int facets_w_3_bad_edge;
int original_num_facets;
int edges_fixed;
int degenerate_facets;
int facets_removed;
int facets_added;
int facets_reversed;
int backwards_edges;
int normals_fixed;
int number_of_parts;
int malloced;
int freed;
int facets_malloced;
int collisions;
int shared_vertices;
int shared_malloced;
} stl_stats;
void clear() {
this->facet_start.clear();
this->neighbors_start.clear();
this->stats.reset();
}
typedef struct {
FILE *fp;
stl_facet *facet_start;
stl_hash_edge **heads;
stl_hash_edge *tail;
int M;
stl_neighbors *neighbors_start;
v_indices_struct *v_indices;
stl_vertex *v_shared;
stl_stats stats;
char error;
} stl_file;
std::vector<stl_facet> facet_start;
std::vector<stl_neighbors> neighbors_start;
// Statistics
stl_stats stats;
};
struct indexed_triangle_set
{
indexed_triangle_set() {}
extern void stl_open(stl_file *stl, const char *file);
extern void stl_close(stl_file *stl);
void clear() { indices.clear(); vertices.clear(); }
std::vector<stl_triangle_vertex_indices> indices;
std::vector<stl_vertex> vertices;
//FIXME add normals once we get rid of the stl_file from TriangleMesh completely.
//std::vector<stl_normal> normals
};
extern bool stl_open(stl_file *stl, const char *file);
extern void stl_stats_out(stl_file *stl, FILE *file, char *input_file);
extern void stl_print_neighbors(stl_file *stl, char *file);
extern void stl_put_little_int(FILE *fp, int value_in);
extern void stl_put_little_float(FILE *fp, float value_in);
extern void stl_write_ascii(stl_file *stl, const char *file, const char *label);
extern void stl_write_binary(stl_file *stl, const char *file, const char *label);
extern void stl_write_binary_block(stl_file *stl, FILE *fp);
extern bool stl_print_neighbors(stl_file *stl, char *file);
extern bool stl_write_ascii(stl_file *stl, const char *file, const char *label);
extern bool stl_write_binary(stl_file *stl, const char *file, const char *label);
extern void stl_check_facets_exact(stl_file *stl);
extern void stl_check_facets_nearby(stl_file *stl, float tolerance);
extern void stl_remove_unconnected_facets(stl_file *stl);
extern void stl_write_vertex(stl_file *stl, int facet, int vertex);
extern void stl_write_facet(stl_file *stl, char *label, int facet);
extern void stl_write_edge(stl_file *stl, char *label, stl_hash_edge edge);
extern void stl_write_neighbor(stl_file *stl, int facet);
extern void stl_write_quad_object(stl_file *stl, char *file);
extern bool stl_write_quad_object(stl_file *stl, char *file);
extern void stl_verify_neighbors(stl_file *stl);
extern void stl_fill_holes(stl_file *stl);
extern void stl_fix_normal_directions(stl_file *stl);
@ -186,36 +178,30 @@ extern void stl_get_size(stl_file *stl);
template<typename T>
extern void stl_transform(stl_file *stl, T *trafo3x4)
{
if (stl->error)
return;
for (uint32_t i_face = 0; i_face < stl->stats.number_of_facets; ++ i_face) {
stl_facet &face = stl->facet_start[i_face];
for (int i_vertex = 0; i_vertex < 3; ++ i_vertex) {
stl_vertex &v_dst = face.vertex[i_vertex];
stl_vertex v_src = v_dst;
v_dst(0) = T(trafo3x4[0] * v_src(0) + trafo3x4[1] * v_src(1) + trafo3x4[2] * v_src(2) + trafo3x4[3]);
v_dst(1) = T(trafo3x4[4] * v_src(0) + trafo3x4[5] * v_src(1) + trafo3x4[6] * v_src(2) + trafo3x4[7]);
v_dst(2) = T(trafo3x4[8] * v_src(0) + trafo3x4[9] * v_src(1) + trafo3x4[10] * v_src(2) + trafo3x4[11]);
}
stl_vertex &v_dst = face.normal;
stl_vertex v_src = v_dst;
v_dst(0) = T(trafo3x4[0] * v_src(0) + trafo3x4[1] * v_src(1) + trafo3x4[2] * v_src(2));
v_dst(1) = T(trafo3x4[4] * v_src(0) + trafo3x4[5] * v_src(1) + trafo3x4[6] * v_src(2));
v_dst(2) = T(trafo3x4[8] * v_src(0) + trafo3x4[9] * v_src(1) + trafo3x4[10] * v_src(2));
}
for (uint32_t i_face = 0; i_face < stl->stats.number_of_facets; ++ i_face) {
stl_facet &face = stl->facet_start[i_face];
for (int i_vertex = 0; i_vertex < 3; ++ i_vertex) {
stl_vertex &v_dst = face.vertex[i_vertex];
stl_vertex v_src = v_dst;
v_dst(0) = T(trafo3x4[0] * v_src(0) + trafo3x4[1] * v_src(1) + trafo3x4[2] * v_src(2) + trafo3x4[3]);
v_dst(1) = T(trafo3x4[4] * v_src(0) + trafo3x4[5] * v_src(1) + trafo3x4[6] * v_src(2) + trafo3x4[7]);
v_dst(2) = T(trafo3x4[8] * v_src(0) + trafo3x4[9] * v_src(1) + trafo3x4[10] * v_src(2) + trafo3x4[11]);
}
stl_vertex &v_dst = face.normal;
stl_vertex v_src = v_dst;
v_dst(0) = T(trafo3x4[0] * v_src(0) + trafo3x4[1] * v_src(1) + trafo3x4[2] * v_src(2));
v_dst(1) = T(trafo3x4[4] * v_src(0) + trafo3x4[5] * v_src(1) + trafo3x4[6] * v_src(2));
v_dst(2) = T(trafo3x4[8] * v_src(0) + trafo3x4[9] * v_src(1) + trafo3x4[10] * v_src(2));
}
stl_get_size(stl);
stl_get_size(stl);
}
template<typename T>
inline void stl_transform(stl_file *stl, const Eigen::Transform<T, 3, Eigen::Affine, Eigen::DontAlign>& t)
{
if (stl->error)
return;
const Eigen::Matrix<double, 3, 3, Eigen::DontAlign> r = t.matrix().template block<3, 3>(0, 0);
for (size_t i = 0; i < stl->stats.number_of_facets; ++i) {
for (size_t i = 0; i < stl->stats.number_of_facets; ++ i) {
stl_facet &f = stl->facet_start[i];
for (size_t j = 0; j < 3; ++j)
f.vertex[j] = (t * f.vertex[j].template cast<T>()).template cast<float>().eval();
@ -228,10 +214,7 @@ inline void stl_transform(stl_file *stl, const Eigen::Transform<T, 3, Eigen::Aff
template<typename T>
inline void stl_transform(stl_file *stl, const Eigen::Matrix<T, 3, 3, Eigen::DontAlign>& m)
{
if (stl->error)
return;
for (size_t i = 0; i < stl->stats.number_of_facets; ++i) {
for (size_t i = 0; i < stl->stats.number_of_facets; ++ i) {
stl_facet &f = stl->facet_start[i];
for (size_t j = 0; j < 3; ++j)
f.vertex[j] = (m * f.vertex[j].template cast<T>()).template cast<float>().eval();
@ -241,13 +224,43 @@ inline void stl_transform(stl_file *stl, const Eigen::Matrix<T, 3, 3, Eigen::Don
stl_get_size(stl);
}
extern void stl_open_merge(stl_file *stl, char *file);
extern void stl_invalidate_shared_vertices(stl_file *stl);
extern void stl_generate_shared_vertices(stl_file *stl);
extern void stl_write_obj(stl_file *stl, const char *file);
extern void stl_write_off(stl_file *stl, const char *file);
extern void stl_write_dxf(stl_file *stl, const char *file, char *label);
extern void stl_write_vrml(stl_file *stl, const char *file);
template<typename T>
extern void its_transform(indexed_triangle_set &its, T *trafo3x4)
{
for (stl_vertex &v_dst : its.vertices) {
stl_vertex v_src = v_dst;
v_dst(0) = T(trafo3x4[0] * v_src(0) + trafo3x4[1] * v_src(1) + trafo3x4[2] * v_src(2) + trafo3x4[3]);
v_dst(1) = T(trafo3x4[4] * v_src(0) + trafo3x4[5] * v_src(1) + trafo3x4[6] * v_src(2) + trafo3x4[7]);
v_dst(2) = T(trafo3x4[8] * v_src(0) + trafo3x4[9] * v_src(1) + trafo3x4[10] * v_src(2) + trafo3x4[11]);
}
}
template<typename T>
inline void its_transform(indexed_triangle_set &its, const Eigen::Transform<T, 3, Eigen::Affine, Eigen::DontAlign>& t)
{
const Eigen::Matrix<double, 3, 3, Eigen::DontAlign> r = t.matrix().template block<3, 3>(0, 0);
for (stl_vertex &v : its.vertices)
v = (t * v.template cast<T>()).template cast<float>().eval();
}
template<typename T>
inline void its_transform(indexed_triangle_set &its, const Eigen::Matrix<T, 3, 3, Eigen::DontAlign>& m)
{
for (stl_vertex &v : its.vertices)
v = (m * v.template cast<T>()).template cast<float>().eval();
}
extern void its_rotate_x(indexed_triangle_set &its, float angle);
extern void its_rotate_y(indexed_triangle_set &its, float angle);
extern void its_rotate_z(indexed_triangle_set &its, float angle);
extern void stl_generate_shared_vertices(stl_file *stl, indexed_triangle_set &its);
extern bool its_write_obj(const indexed_triangle_set &its, const char *file);
extern bool its_write_off(const indexed_triangle_set &its, const char *file);
extern bool its_write_vrml(const indexed_triangle_set &its, const char *file);
extern bool stl_write_dxf(stl_file *stl, const char *file, char *label);
inline void stl_calculate_normal(stl_normal &normal, stl_facet *facet) {
normal = (facet->vertex[1] - facet->vertex[0]).cross(facet->vertex[2] - facet->vertex[0]);
}
@ -258,24 +271,18 @@ inline void stl_normalize_vector(stl_normal &normal) {
else
normal *= float(1.0 / length);
}
inline bool stl_vertex_lower(const stl_vertex &a, const stl_vertex &b) {
return (a(0) != b(0)) ? (a(0) < b(0)) :
((a(1) != b(1)) ? (a(1) < b(1)) : (a(2) < b(2)));
}
extern void stl_calculate_volume(stl_file *stl);
extern void stl_repair(stl_file *stl, int fixall_flag, int exact_flag, int tolerance_flag, float tolerance, int increment_flag, float increment, int nearby_flag, int iterations, int remove_unconnected_flag, int fill_holes_flag, int normal_directions_flag, int normal_values_flag, int reverse_all_flag, int verbose_flag);
extern void stl_repair(stl_file *stl, bool fixall_flag, bool exact_flag, bool tolerance_flag, float tolerance, bool increment_flag, float increment, bool nearby_flag, int iterations, bool remove_unconnected_flag, bool fill_holes_flag, bool normal_directions_flag, bool normal_values_flag, bool reverse_all_flag, bool verbose_flag);
extern void stl_initialize(stl_file *stl);
extern void stl_count_facets(stl_file *stl, const char *file);
extern void stl_allocate(stl_file *stl);
extern void stl_read(stl_file *stl, int first_facet, bool first);
extern void stl_facet_stats(stl_file *stl, stl_facet facet, bool &first);
extern void stl_reallocate(stl_file *stl);
extern void stl_add_facet(stl_file *stl, stl_facet *new_facet);
extern void stl_add_facet(stl_file *stl, const stl_facet *new_facet);
extern void stl_clear_error(stl_file *stl);
extern int stl_get_error(stl_file *stl);
extern void stl_exit_on_error(stl_file *stl);
// Validate the mesh, assert on error.
extern bool stl_validate(const stl_file *stl);
extern bool stl_validate(const stl_file *stl, const indexed_triangle_set &its);
#endif

513
src/admesh/stl_io.cpp
View file

@ -22,159 +22,86 @@
#include <stdlib.h>
#include <string.h>
#include <boost/log/trivial.hpp>
#include <boost/nowide/cstdio.hpp>
#include <boost/predef/other/endian.h>
#include "stl.h"
#include <boost/nowide/cstdio.hpp>
#include <boost/detail/endian.hpp>
#if !defined(SEEK_SET)
#define SEEK_SET 0
#define SEEK_CUR 1
#define SEEK_END 2
#endif
void
stl_stats_out(stl_file *stl, FILE *file, char *input_file) {
if (stl->error) return;
/* this is here for Slic3r, without our config.h
it won't use this part of the code anyway */
void stl_stats_out(stl_file *stl, FILE *file, char *input_file)
{
// This is here for Slic3r, without our config.h it won't use this part of the code anyway.
#ifndef VERSION
#define VERSION "unknown"
#endif
fprintf(file, "\n\
================= Results produced by ADMesh version " VERSION " ================\n");
fprintf(file, "\
Input file : %s\n", input_file);
if(stl->stats.type == binary) {
fprintf(file, "\
File type : Binary STL file\n");
} else {
fprintf(file, "\
File type : ASCII STL file\n");
}
fprintf(file, "\
Header : %s\n", stl->stats.header);
fprintf(file, "============== Size ==============\n");
fprintf(file, "Min X = % f, Max X = % f\n",
stl->stats.min(0), stl->stats.max(0));
fprintf(file, "Min Y = % f, Max Y = % f\n",
stl->stats.min(1), stl->stats.max(1));
fprintf(file, "Min Z = % f, Max Z = % f\n",
stl->stats.min(2), stl->stats.max(2));
fprintf(file, "\
========= Facet Status ========== Original ============ Final ====\n");
fprintf(file, "\
Number of facets : %5d %5d\n",
stl->stats.original_num_facets, stl->stats.number_of_facets);
fprintf(file, "\
Facets with 1 disconnected edge : %5d %5d\n",
stl->stats.facets_w_1_bad_edge, stl->stats.connected_facets_2_edge -
stl->stats.connected_facets_3_edge);
fprintf(file, "\
Facets with 2 disconnected edges : %5d %5d\n",
stl->stats.facets_w_2_bad_edge, stl->stats.connected_facets_1_edge -
stl->stats.connected_facets_2_edge);
fprintf(file, "\
Facets with 3 disconnected edges : %5d %5d\n",
stl->stats.facets_w_3_bad_edge, stl->stats.number_of_facets -
stl->stats.connected_facets_1_edge);
fprintf(file, "\
Total disconnected facets : %5d %5d\n",
stl->stats.facets_w_1_bad_edge + stl->stats.facets_w_2_bad_edge +
stl->stats.facets_w_3_bad_edge, stl->stats.number_of_facets -
stl->stats.connected_facets_3_edge);
fprintf(file,
"=== Processing Statistics === ===== Other Statistics =====\n");
fprintf(file, "\
Number of parts : %5d Volume : % f\n",
stl->stats.number_of_parts, stl->stats.volume);
fprintf(file, "\
Degenerate facets : %5d\n", stl->stats.degenerate_facets);
fprintf(file, "\
Edges fixed : %5d\n", stl->stats.edges_fixed);
fprintf(file, "\
Facets removed : %5d\n", stl->stats.facets_removed);
fprintf(file, "\
Facets added : %5d\n", stl->stats.facets_added);
fprintf(file, "\
Facets reversed : %5d\n", stl->stats.facets_reversed);
fprintf(file, "\
Backwards edges : %5d\n", stl->stats.backwards_edges);
fprintf(file, "\
Normals fixed : %5d\n", stl->stats.normals_fixed);
fprintf(file, "\n================= Results produced by ADMesh version " VERSION " ================\n");
fprintf(file, "Input file : %s\n", input_file);
if (stl->stats.type == binary)
fprintf(file, "File type : Binary STL file\n");
else
fprintf(file, "File type : ASCII STL file\n");
fprintf(file, "Header : %s\n", stl->stats.header);
fprintf(file, "============== Size ==============\n");
fprintf(file, "Min X = % f, Max X = % f\n", stl->stats.min(0), stl->stats.max(0));
fprintf(file, "Min Y = % f, Max Y = % f\n", stl->stats.min(1), stl->stats.max(1));
fprintf(file, "Min Z = % f, Max Z = % f\n", stl->stats.min(2), stl->stats.max(2));
fprintf(file, "========= Facet Status ========== Original ============ Final ====\n");
fprintf(file, "Number of facets : %5d %5d\n", stl->stats.original_num_facets, stl->stats.number_of_facets);
fprintf(file, "Facets with 1 disconnected edge : %5d %5d\n",
stl->stats.facets_w_1_bad_edge, stl->stats.connected_facets_2_edge - stl->stats.connected_facets_3_edge);
fprintf(file, "Facets with 2 disconnected edges : %5d %5d\n",
stl->stats.facets_w_2_bad_edge, stl->stats.connected_facets_1_edge - stl->stats.connected_facets_2_edge);
fprintf(file, "Facets with 3 disconnected edges : %5d %5d\n",
stl->stats.facets_w_3_bad_edge, stl->stats.number_of_facets - stl->stats.connected_facets_1_edge);
fprintf(file, "Total disconnected facets : %5d %5d\n",
stl->stats.facets_w_1_bad_edge + stl->stats.facets_w_2_bad_edge + stl->stats.facets_w_3_bad_edge, stl->stats.number_of_facets - stl->stats.connected_facets_3_edge);
fprintf(file, "=== Processing Statistics === ===== Other Statistics =====\n");
fprintf(file, "Number of parts : %5d Volume : %f\n", stl->stats.number_of_parts, stl->stats.volume);
fprintf(file, "Degenerate facets : %5d\n", stl->stats.degenerate_facets);
fprintf(file, "Edges fixed : %5d\n", stl->stats.edges_fixed);
fprintf(file, "Facets removed : %5d\n", stl->stats.facets_removed);
fprintf(file, "Facets added : %5d\n", stl->stats.facets_added);
fprintf(file, "Facets reversed : %5d\n", stl->stats.facets_reversed);
fprintf(file, "Backwards edges : %5d\n", stl->stats.backwards_edges);
fprintf(file, "Normals fixed : %5d\n", stl->stats.normals_fixed);
}
void
stl_write_ascii(stl_file *stl, const char *file, const char *label) {
int i;
char *error_msg;
bool stl_write_ascii(stl_file *stl, const char *file, const char *label)
{
FILE *fp = boost::nowide::fopen(file, "w");
if (fp == nullptr) {
BOOST_LOG_TRIVIAL(error) << "stl_write_ascii: Couldn't open " << file << " for writing";
return false;
}
if (stl->error) return;
fprintf(fp, "solid %s\n", label);
/* Open the file */
FILE *fp = boost::nowide::fopen(file, "w");
if(fp == NULL) {
error_msg = (char*)
malloc(81 + strlen(file)); /* Allow 80 chars+file size for message */
sprintf(error_msg, "stl_write_ascii: Couldn't open %s for writing",
file);
perror(error_msg);
free(error_msg);
stl->error = 1;
return;
}
for (uint32_t i = 0; i < stl->stats.number_of_facets; ++ i) {
fprintf(fp, " facet normal % .8E % .8E % .8E\n", stl->facet_start[i].normal(0), stl->facet_start[i].normal(1), stl->facet_start[i].normal(2));
fprintf(fp, " outer loop\n");
fprintf(fp, " vertex % .8E % .8E % .8E\n", stl->facet_start[i].vertex[0](0), stl->facet_start[i].vertex[0](1), stl->facet_start[i].vertex[0](2));
fprintf(fp, " vertex % .8E % .8E % .8E\n", stl->facet_start[i].vertex[1](0), stl->facet_start[i].vertex[1](1), stl->facet_start[i].vertex[1](2));
fprintf(fp, " vertex % .8E % .8E % .8E\n", stl->facet_start[i].vertex[2](0), stl->facet_start[i].vertex[2](1), stl->facet_start[i].vertex[2](2));
fprintf(fp, " endloop\n");
fprintf(fp, " endfacet\n");
}
fprintf(fp, "solid %s\n", label);
for(i = 0; i < stl->stats.number_of_facets; i++) {
fprintf(fp, " facet normal % .8E % .8E % .8E\n",
stl->facet_start[i].normal(0), stl->facet_start[i].normal(1),
stl->facet_start[i].normal(2));
fprintf(fp, " outer loop\n");
fprintf(fp, " vertex % .8E % .8E % .8E\n",
stl->facet_start[i].vertex[0](0), stl->facet_start[i].vertex[0](1),
stl->facet_start[i].vertex[0](2));
fprintf(fp, " vertex % .8E % .8E % .8E\n",
stl->facet_start[i].vertex[1](0), stl->facet_start[i].vertex[1](1),
stl->facet_start[i].vertex[1](2));
fprintf(fp, " vertex % .8E % .8E % .8E\n",
stl->facet_start[i].vertex[2](0), stl->facet_start[i].vertex[2](1),
stl->facet_start[i].vertex[2](2));
fprintf(fp, " endloop\n");
fprintf(fp, " endfacet\n");
}
fprintf(fp, "endsolid %s\n", label);
fclose(fp);
fprintf(fp, "endsolid %s\n", label);
fclose(fp);
return true;
}
void
stl_print_neighbors(stl_file *stl, char *file) {
int i;
FILE *fp;
char *error_msg;
bool stl_print_neighbors(stl_file *stl, char *file)
{
FILE *fp = boost::nowide::fopen(file, "w");
if (fp == nullptr) {
BOOST_LOG_TRIVIAL(error) << "stl_print_neighbors: Couldn't open " << file << " for writing";
return false;
}
if (stl->error) return;
/* Open the file */
fp = boost::nowide::fopen(file, "w");
if(fp == NULL) {
error_msg = (char*)
malloc(81 + strlen(file)); /* Allow 80 chars+file size for message */
sprintf(error_msg, "stl_print_neighbors: Couldn't open %s for writing",
file);
perror(error_msg);
free(error_msg);
stl->error = 1;
return;
}
for(i = 0; i < stl->stats.number_of_facets; i++) {
fprintf(fp, "%d, %d,%d, %d,%d, %d,%d\n",
for (uint32_t i = 0; i < stl->stats.number_of_facets; ++ i) {
fprintf(fp, "%d, %d,%d, %d,%d, %d,%d\n",
i,
stl->neighbors_start[i].neighbor[0],
(int)stl->neighbors_start[i].which_vertex_not[0],
@ -182,234 +109,142 @@ stl_print_neighbors(stl_file *stl, char *file) {
(int)stl->neighbors_start[i].which_vertex_not[1],
stl->neighbors_start[i].neighbor[2],
(int)stl->neighbors_start[i].which_vertex_not[2]);
}
fclose(fp);
}
fclose(fp);
return true;
}
#ifndef BOOST_LITTLE_ENDIAN
#if BOOST_ENDIAN_BIG_BYTE
// Swap a buffer of 32bit data from little endian to big endian and vice versa.
void stl_internal_reverse_quads(char *buf, size_t cnt)
{
for (size_t i = 0; i < cnt; i += 4) {
std::swap(buf[i], buf[i+3]);
std::swap(buf[i+1], buf[i+2]);
}
for (size_t i = 0; i < cnt; i += 4) {
std::swap(buf[i], buf[i+3]);
std::swap(buf[i+1], buf[i+2]);
}
}
#endif
void
stl_write_binary(stl_file *stl, const char *file, const char *label) {
FILE *fp;
int i;
char *error_msg;
bool stl_write_binary(stl_file *stl, const char *file, const char *label)
{
FILE *fp = boost::nowide::fopen(file, "wb");
if (fp == nullptr) {
BOOST_LOG_TRIVIAL(error) << "stl_write_binary: Couldn't open " << file << " for writing";
return false;
}
if (stl->error) return;
fprintf(fp, "%s", label);
for (size_t i = strlen(label); i < LABEL_SIZE; ++ i)
putc(0, fp);
/* Open the file */
fp = boost::nowide::fopen(file, "wb");
if(fp == NULL) {
error_msg = (char*)
malloc(81 + strlen(file)); /* Allow 80 chars+file size for message */
sprintf(error_msg, "stl_write_binary: Couldn't open %s for writing",
file);
perror(error_msg);
free(error_msg);
stl->error = 1;
return;
}
fprintf(fp, "%s", label);
for(i = strlen(label); i < LABEL_SIZE; i++) putc(0, fp);
fseek(fp, LABEL_SIZE, SEEK_SET);
#ifdef BOOST_LITTLE_ENDIAN
fwrite(&stl->stats.number_of_facets, 4, 1, fp);
for (i = 0; i < stl->stats.number_of_facets; ++ i)
fwrite(stl->facet_start + i, SIZEOF_STL_FACET, 1, fp);
#else /* BOOST_LITTLE_ENDIAN */
char buffer[50];
// Convert the number of facets to little endian.
memcpy(buffer, &stl->stats.number_of_facets, 4);
stl_internal_reverse_quads(buffer, 4);
fwrite(buffer, 4, 1, fp);
for (i = 0; i < stl->stats.number_of_facets; ++ i) {
memcpy(buffer, stl->facet_start + i, 50);
// Convert to little endian.
stl_internal_reverse_quads(buffer, 48);
fwrite(buffer, SIZEOF_STL_FACET, 1, fp);
}
#endif /* BOOST_LITTLE_ENDIAN */
fclose(fp);
#if !defined(SEEK_SET)
#define SEEK_SET 0
#endif
fseek(fp, LABEL_SIZE, SEEK_SET);
#if BOOST_ENDIAN_LITTLE_BYTE
fwrite(&stl->stats.number_of_facets, 4, 1, fp);
for (const stl_facet &facet : stl->facet_start)
fwrite(&facet, SIZEOF_STL_FACET, 1, fp);
#else /* BOOST_ENDIAN_LITTLE_BYTE */
char buffer[50];
// Convert the number of facets to little endian.
memcpy(buffer, &stl->stats.number_of_facets, 4);
stl_internal_reverse_quads(buffer, 4);
fwrite(buffer, 4, 1, fp);
for (i = 0; i < stl->stats.number_of_facets; ++ i) {
memcpy(buffer, stl->facet_start + i, 50);
// Convert to little endian.
stl_internal_reverse_quads(buffer, 48);
fwrite(buffer, SIZEOF_STL_FACET, 1, fp);
}
#endif /* BOOST_ENDIAN_LITTLE_BYTE */
fclose(fp);
return true;
}
void
stl_write_vertex(stl_file *stl, int facet, int vertex) {
if (stl->error) return;
printf(" vertex %d/%d % .8E % .8E % .8E\n", vertex, facet,
void stl_write_vertex(stl_file *stl, int facet, int vertex)
{
printf(" vertex %d/%d % .8E % .8E % .8E\n", vertex, facet,
stl->facet_start[facet].vertex[vertex](0),
stl->facet_start[facet].vertex[vertex](1),
stl->facet_start[facet].vertex[vertex](2));
}
void
stl_write_facet(stl_file *stl, char *label, int facet) {
if (stl->error) return;
printf("facet (%d)/ %s\n", facet, label);
stl_write_vertex(stl, facet, 0);
stl_write_vertex(stl, facet, 1);
stl_write_vertex(stl, facet, 2);
void stl_write_facet(stl_file *stl, char *label, int facet)
{
printf("facet (%d)/ %s\n", facet, label);
stl_write_vertex(stl, facet, 0);
stl_write_vertex(stl, facet, 1);
stl_write_vertex(stl, facet, 2);
}
void
stl_write_edge(stl_file *stl, char *label, stl_hash_edge edge) {
if (stl->error) return;
printf("edge (%d)/(%d) %s\n", edge.facet_number, edge.which_edge, label);
if(edge.which_edge < 3) {
stl_write_vertex(stl, edge.facet_number, edge.which_edge % 3);
stl_write_vertex(stl, edge.facet_number, (edge.which_edge + 1) % 3);
} else {
stl_write_vertex(stl, edge.facet_number, (edge.which_edge + 1) % 3);
stl_write_vertex(stl, edge.facet_number, edge.which_edge % 3);
}
void stl_write_neighbor(stl_file *stl, int facet)
{
printf("Neighbors %d: %d, %d, %d ; %d, %d, %d\n", facet,
stl->neighbors_start[facet].neighbor[0],
stl->neighbors_start[facet].neighbor[1],
stl->neighbors_start[facet].neighbor[2],
stl->neighbors_start[facet].which_vertex_not[0],
stl->neighbors_start[facet].which_vertex_not[1],
stl->neighbors_start[facet].which_vertex_not[2]);
}
void
stl_write_neighbor(stl_file *stl, int facet) {
if (stl->error) return;
printf("Neighbors %d: %d, %d, %d ; %d, %d, %d\n", facet,
stl->neighbors_start[facet].neighbor[0],
stl->neighbors_start[facet].neighbor[1],
stl->neighbors_start[facet].neighbor[2],
stl->neighbors_start[facet].which_vertex_not[0],
stl->neighbors_start[facet].which_vertex_not[1],
stl->neighbors_start[facet].which_vertex_not[2]);
}
bool stl_write_quad_object(stl_file *stl, char *file)
{
stl_vertex connect_color = stl_vertex::Zero();
stl_vertex uncon_1_color = stl_vertex::Zero();
stl_vertex uncon_2_color = stl_vertex::Zero();
stl_vertex uncon_3_color = stl_vertex::Zero();
stl_vertex color;
void
stl_write_quad_object(stl_file *stl, char *file) {
FILE *fp;
int i;
int j;
char *error_msg;
stl_vertex connect_color = stl_vertex::Zero();
stl_vertex uncon_1_color = stl_vertex::Zero();
stl_vertex uncon_2_color = stl_vertex::Zero();
stl_vertex uncon_3_color = stl_vertex::Zero();
stl_vertex color;
FILE *fp = boost::nowide::fopen(file, "w");
if (fp == nullptr) {
BOOST_LOG_TRIVIAL(error) << "stl_write_quad_object: Couldn't open " << file << " for writing";
return false;
}
if (stl->error) return;
/* Open the file */
fp = boost::nowide::fopen(file, "w");
if(fp == NULL) {
error_msg = (char*)
malloc(81 + strlen(file)); /* Allow 80 chars+file size for message */
sprintf(error_msg, "stl_write_quad_object: Couldn't open %s for writing",
file);
perror(error_msg);
free(error_msg);
stl->error = 1;
return;
}
fprintf(fp, "CQUAD\n");
for(i = 0; i < stl->stats.number_of_facets; i++) {
j = ((stl->neighbors_start[i].neighbor[0] == -1) +
(stl->neighbors_start[i].neighbor[1] == -1) +
(stl->neighbors_start[i].neighbor[2] == -1));
if(j == 0) {
color = connect_color;
} else if(j == 1) {
color = uncon_1_color;
} else if(j == 2) {
color = uncon_2_color;
} else {
color = uncon_3_color;
}
fprintf(fp, "%f %f %f %1.1f %1.1f %1.1f 1\n",
stl->facet_start[i].vertex[0](0),
stl->facet_start[i].vertex[0](1),
stl->facet_start[i].vertex[0](2), color(0), color(1), color(2));
fprintf(fp, "%f %f %f %1.1f %1.1f %1.1f 1\n",
stl->facet_start[i].vertex[1](0),
stl->facet_start[i].vertex[1](1),
stl->facet_start[i].vertex[1](2), color(0), color(1), color(2));
fprintf(fp, "%f %f %f %1.1f %1.1f %1.1f 1\n",
stl->facet_start[i].vertex[2](0),
stl->facet_start[i].vertex[2](1),
stl->facet_start[i].vertex[2](2), color(0), color(1), color(2));
fprintf(fp, "%f %f %f %1.1f %1.1f %1.1f 1\n",
stl->facet_start[i].vertex[2](0),
stl->facet_start[i].vertex[2](1),
stl->facet_start[i].vertex[2](2), color(0), color(1), color(2));
fprintf(fp, "CQUAD\n");
for (uint32_t i = 0; i < stl->stats.number_of_facets; ++ i) {
switch (stl->neighbors_start[i].num_neighbors_missing()) {
case 0: color = connect_color; break;
case 1: color = uncon_1_color; break;
case 2: color = uncon_2_color; break;
default: color = uncon_3_color;
}
fprintf(fp, "%f %f %f %1.1f %1.1f %1.1f 1\n", stl->facet_start[i].vertex[0](0), stl->facet_start[i].vertex[0](1), stl->facet_start[i].vertex[0](2), color(0), color(1), color(2));
fprintf(fp, "%f %f %f %1.1f %1.1f %1.1f 1\n", stl->facet_start[i].vertex[1](0), stl->facet_start[i].vertex[1](1), stl->facet_start[i].vertex[1](2), color(0), color(1), color(2));
fprintf(fp, "%f %f %f %1.1f %1.1f %1.1f 1\n", stl->facet_start[i].vertex[2](0), stl->facet_start[i].vertex[2](1), stl->facet_start[i].vertex[2](2), color(0), color(1), color(2));
fprintf(fp, "%f %f %f %1.1f %1.1f %1.1f 1\n", stl->facet_start[i].vertex[2](0), stl->facet_start[i].vertex[2](1), stl->facet_start[i].vertex[2](2), color(0), color(1), color(2));
}
fclose(fp);
return true;
}
void
stl_write_dxf(stl_file *stl, const char *file, char *label) {
int i;
FILE *fp;
char *error_msg;
bool stl_write_dxf(stl_file *stl, const char *file, char *label)
{
FILE *fp = boost::nowide::fopen(file, "w");
if (fp == nullptr) {
BOOST_LOG_TRIVIAL(error) << "stl_write_quad_object: Couldn't open " << file << " for writing";
return false;
}
if (stl->error) return;
fprintf(fp, "999\n%s\n", label);
fprintf(fp, "0\nSECTION\n2\nHEADER\n0\nENDSEC\n");
fprintf(fp, "0\nSECTION\n2\nTABLES\n0\nTABLE\n2\nLAYER\n70\n1\n\
0\nLAYER\n2\n0\n70\n0\n62\n7\n6\nCONTINUOUS\n0\nENDTAB\n0\nENDSEC\n");
fprintf(fp, "0\nSECTION\n2\nBLOCKS\n0\nENDSEC\n");
/* Open the file */
fp = boost::nowide::fopen(file, "w");
if(fp == NULL) {
error_msg = (char*)
malloc(81 + strlen(file)); /* Allow 80 chars+file size for message */
sprintf(error_msg, "stl_write_ascii: Couldn't open %s for writing",
file);
perror(error_msg);
free(error_msg);
stl->error = 1;
return;
}
fprintf(fp, "0\nSECTION\n2\nENTITIES\n");
fprintf(fp, "999\n%s\n", label);
fprintf(fp, "0\nSECTION\n2\nHEADER\n0\nENDSEC\n");
fprintf(fp, "0\nSECTION\n2\nTABLES\n0\nTABLE\n2\nLAYER\n70\n1\n\
0\nLAYER\n2\n0\n70\n0\n62\n7\n6\nCONTINUOUS\n0\nENDTAB\n0\nENDSEC\n");
fprintf(fp, "0\nSECTION\n2\nBLOCKS\n0\nENDSEC\n");
for (uint32_t i = 0; i < stl->stats.number_of_facets; ++ i) {
fprintf(fp, "0\n3DFACE\n8\n0\n");
fprintf(fp, "10\n%f\n20\n%f\n30\n%f\n", stl->facet_start[i].vertex[0](0), stl->facet_start[i].vertex[0](1), stl->facet_start[i].vertex[0](2));
fprintf(fp, "11\n%f\n21\n%f\n31\n%f\n", stl->facet_start[i].vertex[1](0), stl->facet_start[i].vertex[1](1), stl->facet_start[i].vertex[1](2));
fprintf(fp, "12\n%f\n22\n%f\n32\n%f\n", stl->facet_start[i].vertex[2](0), stl->facet_start[i].vertex[2](1), stl->facet_start[i].vertex[2](2));
fprintf(fp, "13\n%f\n23\n%f\n33\n%f\n", stl->facet_start[i].vertex[2](0), stl->facet_start[i].vertex[2](1), stl->facet_start[i].vertex[2](2));
}
fprintf(fp, "0\nSECTION\n2\nENTITIES\n");
for(i = 0; i < stl->stats.number_of_facets; i++) {
fprintf(fp, "0\n3DFACE\n8\n0\n");
fprintf(fp, "10\n%f\n20\n%f\n30\n%f\n",
stl->facet_start[i].vertex[0](0), stl->facet_start[i].vertex[0](1),
stl->facet_start[i].vertex[0](2));
fprintf(fp, "11\n%f\n21\n%f\n31\n%f\n",
stl->facet_start[i].vertex[1](0), stl->facet_start[i].vertex[1](1),
stl->facet_start[i].vertex[1](2));
fprintf(fp, "12\n%f\n22\n%f\n32\n%f\n",
stl->facet_start[i].vertex[2](0), stl->facet_start[i].vertex[2](1),
stl->facet_start[i].vertex[2](2));
fprintf(fp, "13\n%f\n23\n%f\n33\n%f\n",
stl->facet_start[i].vertex[2](0), stl->facet_start[i].vertex[2](1),
stl->facet_start[i].vertex[2](2));
}
fprintf(fp, "0\nENDSEC\n0\nEOF\n");
fclose(fp);
}
void
stl_clear_error(stl_file *stl) {
stl->error = 0;
}
void
stl_exit_on_error(stl_file *stl) {
if (!stl->error) return;
stl->error = 0;
stl_close(stl);
exit(1);
}
int
stl_get_error(stl_file *stl) {
return stl->error;
fprintf(fp, "0\nENDSEC\n0\nEOF\n");
fclose(fp);
return true;
}

548
src/admesh/stlinit.cpp
View file

@ -26,6 +26,7 @@
#include <math.h>
#include <assert.h>
#include <boost/log/trivial.hpp>
#include <boost/nowide/cstdio.hpp>
#include <boost/detail/endian.hpp>
@ -35,351 +36,236 @@
#error "SEEK_SET not defined"
#endif
void
stl_open(stl_file *stl, const char *file) {
stl_initialize(stl);
stl_count_facets(stl, file);
stl_allocate(stl);
stl_read(stl, 0, true);
if (stl->fp != nullptr) {
fclose(stl->fp);
stl->fp = nullptr;
}
static FILE* stl_open_count_facets(stl_file *stl, const char *file)
{
// Open the file in binary mode first.
FILE *fp = boost::nowide::fopen(file, "rb");
if (fp == nullptr) {
BOOST_LOG_TRIVIAL(error) << "stl_open_count_facets: Couldn't open " << file << " for reading";
return nullptr;
}
// Find size of file.
fseek(fp, 0, SEEK_END);
long file_size = ftell(fp);
// Check for binary or ASCII file.
fseek(fp, HEADER_SIZE, SEEK_SET);
unsigned char chtest[128];
if (! fread(chtest, sizeof(chtest), 1, fp)) {
BOOST_LOG_TRIVIAL(error) << "stl_open_count_facets: The input is an empty file: " << file;
fclose(fp);
return nullptr;
}
stl->stats.type = ascii;
for (size_t s = 0; s < sizeof(chtest); s++) {
if (chtest[s] > 127) {
stl->stats.type = binary;
break;
}
}
rewind(fp);
uint32_t num_facets = 0;
// Get the header and the number of facets in the .STL file.
// If the .STL file is binary, then do the following:
if (stl->stats.type == binary) {
// Test if the STL file has the right size.
if (((file_size - HEADER_SIZE) % SIZEOF_STL_FACET != 0) || (file_size < STL_MIN_FILE_SIZE)) {
BOOST_LOG_TRIVIAL(error) << "stl_open_count_facets: The file " << file << " has the wrong size.";
fclose(fp);
return nullptr;
}
num_facets = (file_size - HEADER_SIZE) / SIZEOF_STL_FACET;
// Read the header.
if (fread(stl->stats.header, LABEL_SIZE, 1, fp) > 79)
stl->stats.header[80] = '\0';
// Read the int following the header. This should contain # of facets.
uint32_t header_num_facets;
bool header_num_faces_read = fread(&header_num_facets, sizeof(uint32_t), 1, fp) != 0;
#ifndef BOOST_LITTLE_ENDIAN
// Convert from little endian to big endian.
stl_internal_reverse_quads((char*)&header_num_facets, 4);
#endif /* BOOST_LITTLE_ENDIAN */
if (! header_num_faces_read || num_facets != header_num_facets)
BOOST_LOG_TRIVIAL(info) << "stl_open_count_facets: Warning: File size doesn't match number of facets in the header: " << file;
}
// Otherwise, if the .STL file is ASCII, then do the following:
else
{
// Reopen the file in text mode (for getting correct newlines on Windows)
// fix to silence a warning about unused return value.
// obviously if it fails we have problems....
fp = boost::nowide::freopen(file, "r", fp);
// do another null check to be safe
if (fp == nullptr) {
BOOST_LOG_TRIVIAL(error) << "stl_open_count_facets: Couldn't open " << file << " for reading";
fclose(fp);
return nullptr;
}
// Find the number of facets.
char linebuf[100];
int num_lines = 1;
while (fgets(linebuf, 100, fp) != nullptr) {
// Don't count short lines.
if (strlen(linebuf) <= 4)
continue;
// Skip solid/endsolid lines as broken STL file generators may put several of them.
if (strncmp(linebuf, "solid", 5) == 0 || strncmp(linebuf, "endsolid", 8) == 0)
continue;
++ num_lines;
}
rewind(fp);
// Get the header.
int i = 0;
for (; i < 80 && (stl->stats.header[i] = getc(fp)) != '\n'; ++ i) ;
stl->stats.header[i] = '\0'; // Lose the '\n'
stl->stats.header[80] = '\0';
num_facets = num_lines / ASCII_LINES_PER_FACET;
}
stl->stats.number_of_facets += num_facets;
stl->stats.original_num_facets = stl->stats.number_of_facets;
return fp;
}
void
stl_initialize(stl_file *stl) {
memset(stl, 0, sizeof(stl_file));
stl->stats.volume = -1.0;
/* Reads the contents of the file pointed to by fp into the stl structure,
starting at facet first_facet. The second argument says if it's our first
time running this for the stl and therefore we should reset our max and min stats. */
static bool stl_read(stl_file *stl, FILE *fp, int first_facet, bool first)
{
if (stl->stats.type == binary)
fseek(fp, HEADER_SIZE, SEEK_SET);
else
rewind(fp);
char normal_buf[3][32];
for (uint32_t i = first_facet; i < stl->stats.number_of_facets; ++ i) {
stl_facet facet;
if (stl->stats.type == binary) {
// Read a single facet from a binary .STL file. We assume little-endian architecture!
if (fread(&facet, 1, SIZEOF_STL_FACET, fp) != SIZEOF_STL_FACET)
return false;
#ifndef BOOST_LITTLE_ENDIAN
// Convert the loaded little endian data to big endian.
stl_internal_reverse_quads((char*)&facet, 48);
#endif /* BOOST_LITTLE_ENDIAN */
} else {
// Read a single facet from an ASCII .STL file
// skip solid/endsolid
// (in this order, otherwise it won't work when they are paired in the middle of a file)
fscanf(fp, "endsolid%*[^\n]\n");
fscanf(fp, "solid%*[^\n]\n"); // name might contain spaces so %*s doesn't work and it also can be empty (just "solid")
// Leading space in the fscanf format skips all leading white spaces including numerous new lines and tabs.
int res_normal = fscanf(fp, " facet normal %31s %31s %31s", normal_buf[0], normal_buf[1], normal_buf[2]);
assert(res_normal == 3);
int res_outer_loop = fscanf(fp, " outer loop");
assert(res_outer_loop == 0);
int res_vertex1 = fscanf(fp, " vertex %f %f %f", &facet.vertex[0](0), &facet.vertex[0](1), &facet.vertex[0](2));
assert(res_vertex1 == 3);
int res_vertex2 = fscanf(fp, " vertex %f %f %f", &facet.vertex[1](0), &facet.vertex[1](1), &facet.vertex[1](2));
assert(res_vertex2 == 3);
int res_vertex3 = fscanf(fp, " vertex %f %f %f", &facet.vertex[2](0), &facet.vertex[2](1), &facet.vertex[2](2));
assert(res_vertex3 == 3);
int res_endloop = fscanf(fp, " endloop");
assert(res_endloop == 0);
// There is a leading and trailing white space around endfacet to eat up all leading and trailing white spaces including numerous tabs and new lines.
int res_endfacet = fscanf(fp, " endfacet ");
if (res_normal != 3 || res_outer_loop != 0 || res_vertex1 != 3 || res_vertex2 != 3 || res_vertex3 != 3 || res_endloop != 0 || res_endfacet != 0) {
BOOST_LOG_TRIVIAL(error) << "Something is syntactically very wrong with this ASCII STL! ";
return false;
}
// The facet normal has been parsed as a single string as to workaround for not a numbers in the normal definition.
if (sscanf(normal_buf[0], "%f", &facet.normal(0)) != 1 ||
sscanf(normal_buf[1], "%f", &facet.normal(1)) != 1 ||
sscanf(normal_buf[2], "%f", &facet.normal(2)) != 1) {
// Normal was mangled. Maybe denormals or "not a number" were stored?
// Just reset the normal and silently ignore it.
memset(&facet.normal, 0, sizeof(facet.normal));
}
}
#if 0
// Report close to zero vertex coordinates. Due to the nature of the floating point numbers,
// close to zero values may be represented with singificantly higher precision than the rest of the vertices.
// It may be worth to round these numbers to zero during loading to reduce the number of errors reported
// during the STL import.
for (size_t j = 0; j < 3; ++ j) {
if (facet.vertex[j](0) > -1e-12f && facet.vertex[j](0) < 1e-12f)
printf("stl_read: facet %d(0) = %e\r\n", j, facet.vertex[j](0));
if (facet.vertex[j](1) > -1e-12f && facet.vertex[j](1) < 1e-12f)
printf("stl_read: facet %d(1) = %e\r\n", j, facet.vertex[j](1));
if (facet.vertex[j](2) > -1e-12f && facet.vertex[j](2) < 1e-12f)
printf("stl_read: facet %d(2) = %e\r\n", j, facet.vertex[j](2));
}
#endif
// Write the facet into memory.
stl->facet_start[i] = facet;
stl_facet_stats(stl, facet, first);
}
stl->stats.size = stl->stats.max - stl->stats.min;
stl->stats.bounding_diameter = stl->stats.size.norm();
return true;
}
bool stl_open(stl_file *stl, const char *file)
{
stl->clear();
FILE *fp = stl_open_count_facets(stl, file);
if (fp == nullptr)
return false;
stl_allocate(stl);
bool result = stl_read(stl, fp, 0, true);
fclose(fp);
return result;
}
#ifndef BOOST_LITTLE_ENDIAN
extern void stl_internal_reverse_quads(char *buf, size_t cnt);
#endif /* BOOST_LITTLE_ENDIAN */
void
stl_count_facets(stl_file *stl, const char *file) {
long file_size;
uint32_t header_num_facets;
uint32_t num_facets;
int i;
size_t s;
unsigned char chtest[128];
int num_lines = 1;
char *error_msg;
if (stl->error) return;
/* Open the file in binary mode first */
stl->fp = boost::nowide::fopen(file, "rb");
if(stl->fp == NULL) {
error_msg = (char*)
malloc(81 + strlen(file)); /* Allow 80 chars+file size for message */
sprintf(error_msg, "stl_initialize: Couldn't open %s for reading",
file);
perror(error_msg);
free(error_msg);
stl->error = 1;
return;
}
/* Find size of file */
fseek(stl->fp, 0, SEEK_END);
file_size = ftell(stl->fp);
/* Check for binary or ASCII file */
fseek(stl->fp, HEADER_SIZE, SEEK_SET);
if (!fread(chtest, sizeof(chtest), 1, stl->fp)) {
perror("The input is an empty file");
stl->error = 1;
return;
}
stl->stats.type = ascii;
for(s = 0; s < sizeof(chtest); s++) {
if(chtest[s] > 127) {
stl->stats.type = binary;
break;
}
}
rewind(stl->fp);
/* Get the header and the number of facets in the .STL file */
/* If the .STL file is binary, then do the following */
if(stl->stats.type == binary) {
/* Test if the STL file has the right size */
if(((file_size - HEADER_SIZE) % SIZEOF_STL_FACET != 0)
|| (file_size < STL_MIN_FILE_SIZE)) {
fprintf(stderr, "The file %s has the wrong size.\n", file);
stl->error = 1;
return;
}
num_facets = (file_size - HEADER_SIZE) / SIZEOF_STL_FACET;
/* Read the header */
if (fread(stl->stats.header, LABEL_SIZE, 1, stl->fp) > 79) {
stl->stats.header[80] = '\0';
}
/* Read the int following the header. This should contain # of facets */
bool header_num_faces_read = fread(&header_num_facets, sizeof(uint32_t), 1, stl->fp) != 0;
#ifndef BOOST_LITTLE_ENDIAN
// Convert from little endian to big endian.
stl_internal_reverse_quads((char*)&header_num_facets, 4);
#endif /* BOOST_LITTLE_ENDIAN */
if (! header_num_faces_read || num_facets != header_num_facets) {
fprintf(stderr,
"Warning: File size doesn't match number of facets in the header\n");
}
}
/* Otherwise, if the .STL file is ASCII, then do the following */
else {
/* Reopen the file in text mode (for getting correct newlines on Windows) */
// fix to silence a warning about unused return value.
// obviously if it fails we have problems....
stl->fp = boost::nowide::freopen(file, "r", stl->fp);
// do another null check to be safe
if(stl->fp == NULL) {
error_msg = (char*)
malloc(81 + strlen(file)); /* Allow 80 chars+file size for message */
sprintf(error_msg, "stl_initialize: Couldn't open %s for reading",
file);
perror(error_msg);
free(error_msg);
stl->error = 1;
return;
}
/* Find the number of facets */
char linebuf[100];
while (fgets(linebuf, 100, stl->fp) != NULL) {
/* don't count short lines */
if (strlen(linebuf) <= 4) continue;
/* skip solid/endsolid lines as broken STL file generators may put several of them */
if (strncmp(linebuf, "solid", 5) == 0 || strncmp(linebuf, "endsolid", 8) == 0) continue;
++num_lines;
}
rewind(stl->fp);
/* Get the header */
for(i = 0;
(i < 80) && (stl->stats.header[i] = getc(stl->fp)) != '\n'; i++);
stl->stats.header[i] = '\0'; /* Lose the '\n' */
stl->stats.header[80] = '\0';
num_facets = num_lines / ASCII_LINES_PER_FACET;
}
stl->stats.number_of_facets += num_facets;
stl->stats.original_num_facets = stl->stats.number_of_facets;
void stl_allocate(stl_file *stl)
{
// Allocate memory for the entire .STL file.
stl->facet_start.assign(stl->stats.number_of_facets, stl_facet());
// Allocate memory for the neighbors list.
stl->neighbors_start.assign(stl->stats.number_of_facets, stl_neighbors());
}
void
stl_allocate(stl_file *stl) {
if (stl->error) return;
/* Allocate memory for the entire .STL file */
stl->facet_start = (stl_facet*)calloc(stl->stats.number_of_facets,
sizeof(stl_facet));
if(stl->facet_start == NULL) perror("stl_initialize");
stl->stats.facets_malloced = stl->stats.number_of_facets;
/* Allocate memory for the neighbors list */
stl->neighbors_start = (stl_neighbors*)
calloc(stl->stats.number_of_facets, sizeof(stl_neighbors));
if(stl->facet_start == NULL) perror("stl_initialize");
}
void
stl_open_merge(stl_file *stl, char *file_to_merge) {
int num_facets_so_far;
stl_type origStlType;
FILE *origFp;
stl_file stl_to_merge;
if (stl->error) return;
/* Record how many facets we have so far from the first file. We will start putting
facets in the next position. Since we're 0-indexed, it'l be the same position. */
num_facets_so_far = stl->stats.number_of_facets;
/* Record the file type we started with: */
origStlType=stl->stats.type;
/* Record the file pointer too: */
origFp=stl->fp;
/* Initialize the sturucture with zero stats, header info and sizes: */
stl_initialize(&stl_to_merge);
stl_count_facets(&stl_to_merge, file_to_merge);
/* Copy what we need to into stl so that we can read the file_to_merge directly into it
using stl_read: Save the rest of the valuable info: */
stl->stats.type=stl_to_merge.stats.type;
stl->fp=stl_to_merge.fp;
/* Add the number of facets we already have in stl with what we we found in stl_to_merge but
haven't read yet. */
stl->stats.number_of_facets=num_facets_so_far+stl_to_merge.stats.number_of_facets;
/* Allocate enough room for stl->stats.number_of_facets facets and neighbors: */
stl_reallocate(stl);
/* Read the file to merge directly into stl, adding it to what we have already.
Start at num_facets_so_far, the index to the first unused facet. Also say
that this isn't our first time so we should augment stats like min and max
instead of erasing them. */
stl_read(stl, num_facets_so_far, false);
/* Restore the stl information we overwrote (for stl_read) so that it still accurately
reflects the subject part: */
stl->stats.type=origStlType;
stl->fp=origFp;
}
extern void
stl_reallocate(stl_file *stl) {
if (stl->error) return;
/* Reallocate more memory for the .STL file(s) */
stl->facet_start = (stl_facet*)realloc(stl->facet_start, stl->stats.number_of_facets *
sizeof(stl_facet));
if(stl->facet_start == NULL) perror("stl_initialize");
stl->stats.facets_malloced = stl->stats.number_of_facets;
/* Reallocate more memory for the neighbors list */
stl->neighbors_start = (stl_neighbors*)
realloc(stl->neighbors_start, stl->stats.number_of_facets *
sizeof(stl_neighbors));
if(stl->facet_start == NULL) perror("stl_initialize");
}
/* Reads the contents of the file pointed to by stl->fp into the stl structure,
starting at facet first_facet. The second argument says if it's our first
time running this for the stl and therefore we should reset our max and min stats. */
void stl_read(stl_file *stl, int first_facet, bool first) {
stl_facet facet;
if (stl->error) return;
if(stl->stats.type == binary) {
fseek(stl->fp, HEADER_SIZE, SEEK_SET);
} else {
rewind(stl->fp);
}
char normal_buf[3][32];
for(uint32_t i = first_facet; i < stl->stats.number_of_facets; i++) {
if(stl->stats.type == binary)
/* Read a single facet from a binary .STL file */
{
/* we assume little-endian architecture! */
if (fread(&facet, 1, SIZEOF_STL_FACET, stl->fp) != SIZEOF_STL_FACET) {
stl->error = 1;
return;
}
#ifndef BOOST_LITTLE_ENDIAN
// Convert the loaded little endian data to big endian.
stl_internal_reverse_quads((char*)&facet, 48);
#endif /* BOOST_LITTLE_ENDIAN */
} else
/* Read a single facet from an ASCII .STL file */
{
// skip solid/endsolid
// (in this order, otherwise it won't work when they are paired in the middle of a file)
fscanf(stl->fp, "endsolid%*[^\n]\n");
fscanf(stl->fp, "solid%*[^\n]\n"); // name might contain spaces so %*s doesn't work and it also can be empty (just "solid")
// Leading space in the fscanf format skips all leading white spaces including numerous new lines and tabs.
int res_normal = fscanf(stl->fp, " facet normal %31s %31s %31s", normal_buf[0], normal_buf[1], normal_buf[2]);
assert(res_normal == 3);
int res_outer_loop = fscanf(stl->fp, " outer loop");
assert(res_outer_loop == 0);
int res_vertex1 = fscanf(stl->fp, " vertex %f %f %f", &facet.vertex[0](0), &facet.vertex[0](1), &facet.vertex[0](2));
assert(res_vertex1 == 3);
int res_vertex2 = fscanf(stl->fp, " vertex %f %f %f", &facet.vertex[1](0), &facet.vertex[1](1), &facet.vertex[1](2));
assert(res_vertex2 == 3);
int res_vertex3 = fscanf(stl->fp, " vertex %f %f %f", &facet.vertex[2](0), &facet.vertex[2](1), &facet.vertex[2](2));
assert(res_vertex3 == 3);
int res_endloop = fscanf(stl->fp, " endloop");
assert(res_endloop == 0);
// There is a leading and trailing white space around endfacet to eat up all leading and trailing white spaces including numerous tabs and new lines.
int res_endfacet = fscanf(stl->fp, " endfacet ");
if (res_normal != 3 || res_outer_loop != 0 || res_vertex1 != 3 || res_vertex2 != 3 || res_vertex3 != 3 || res_endloop != 0 || res_endfacet != 0) {
perror("Something is syntactically very wrong with this ASCII STL!");
stl->error = 1;
return;
}
// The facet normal has been parsed as a single string as to workaround for not a numbers in the normal definition.
if (sscanf(normal_buf[0], "%f", &facet.normal(0)) != 1 ||
sscanf(normal_buf[1], "%f", &facet.normal(1)) != 1 ||
sscanf(normal_buf[2], "%f", &facet.normal(2)) != 1) {
// Normal was mangled. Maybe denormals or "not a number" were stored?
// Just reset the normal and silently ignore it.
memset(&facet.normal, 0, sizeof(facet.normal));
}
}
#if 0
// Report close to zero vertex coordinates. Due to the nature of the floating point numbers,
// close to zero values may be represented with singificantly higher precision than the rest of the vertices.
// It may be worth to round these numbers to zero during loading to reduce the number of errors reported
// during the STL import.
for (size_t j = 0; j < 3; ++ j) {
if (facet.vertex[j](0) > -1e-12f && facet.vertex[j](0) < 1e-12f)
printf("stl_read: facet %d(0) = %e\r\n", j, facet.vertex[j](0));
if (facet.vertex[j](1) > -1e-12f && facet.vertex[j](1) < 1e-12f)
printf("stl_read: facet %d(1) = %e\r\n", j, facet.vertex[j](1));
if (facet.vertex[j](2) > -1e-12f && facet.vertex[j](2) < 1e-12f)
printf("stl_read: facet %d(2) = %e\r\n", j, facet.vertex[j](2));
}
#endif
/* Write the facet into memory. */
stl->facet_start[i] = facet;
stl_facet_stats(stl, facet, first);
}
stl->stats.size = stl->stats.max - stl->stats.min;
stl->stats.bounding_diameter = stl->stats.size.norm();
void stl_reallocate(stl_file *stl)
{
stl->facet_start.resize(stl->stats.number_of_facets);
stl->neighbors_start.resize(stl->stats.number_of_facets);
}
void stl_facet_stats(stl_file *stl, stl_facet facet, bool &first)
{
if (stl->error)
return;
// While we are going through all of the facets, let's find the
// maximum and minimum values for x, y, and z
// While we are going through all of the facets, let's find the
// maximum and minimum values for x, y, and z
if (first) {
// Initialize the max and min values the first time through
stl->stats.min = facet.vertex[0];
stl->stats.max = facet.vertex[0];
stl_vertex diff = (facet.vertex[1] - facet.vertex[0]).cwiseAbs();
stl->stats.shortest_edge = std::max(diff(0), std::max(diff(1), diff(2)));
first = false;
}
if (first) {
// Initialize the max and min values the first time through
stl->stats.min = facet.vertex[0];
stl->stats.max = facet.vertex[0];
stl_vertex diff = (facet.vertex[1] - facet.vertex[0]).cwiseAbs();
stl->stats.shortest_edge = std::max(diff(0), std::max(diff(1), diff(2)));
first = false;
}
// Now find the max and min values.
for (size_t i = 0; i < 3; ++ i) {
stl->stats.min = stl->stats.min.cwiseMin(facet.vertex[i]);
stl->stats.max = stl->stats.max.cwiseMax(facet.vertex[i]);
}
}
void stl_close(stl_file *stl)
{
assert(stl->fp == nullptr);
assert(stl->heads == nullptr);
assert(stl->tail == nullptr);
if (stl->facet_start != NULL)
free(stl->facet_start);
if (stl->neighbors_start != NULL)
free(stl->neighbors_start);
if (stl->v_indices != NULL)
free(stl->v_indices);
if (stl->v_shared != NULL)
free(stl->v_shared);
memset(stl, 0, sizeof(stl_file));
// Now find the max and min values.
for (size_t i = 0; i < 3; ++ i) {
stl->stats.min = stl->stats.min.cwiseMin(facet.vertex[i]);
stl->stats.max = stl->stats.max.cwiseMax(facet.vertex[i]);
}
}

694
src/admesh/util.cpp
View file

@ -25,435 +25,375 @@
#include <string.h>
#include <math.h>
#include <boost/log/trivial.hpp>
#include "stl.h"
static void stl_rotate(float *x, float *y, const double c, const double s);
static float get_area(stl_facet *facet);
static float get_volume(stl_file *stl);
void stl_verify_neighbors(stl_file *stl)
{
stl->stats.backwards_edges = 0;
void
stl_verify_neighbors(stl_file *stl) {
int i;
int j;
stl_edge edge_a;
stl_edge edge_b;
int neighbor;
int vnot;
if (stl->error) return;
stl->stats.backwards_edges = 0;
for(i = 0; i < stl->stats.number_of_facets; i++) {
for(j = 0; j < 3; j++) {
edge_a.p1 = stl->facet_start[i].vertex[j];
edge_a.p2 = stl->facet_start[i].vertex[(j + 1) % 3];
neighbor = stl->neighbors_start[i].neighbor[j];
vnot = stl->neighbors_start[i].which_vertex_not[j];
if(neighbor == -1)
continue; /* this edge has no neighbor... Continue. */
if(vnot < 3) {
edge_b.p1 = stl->facet_start[neighbor].vertex[(vnot + 2) % 3];
edge_b.p2 = stl->facet_start[neighbor].vertex[(vnot + 1) % 3];
} else {
stl->stats.backwards_edges += 1;
edge_b.p1 = stl->facet_start[neighbor].vertex[(vnot + 1) % 3];
edge_b.p2 = stl->facet_start[neighbor].vertex[(vnot + 2) % 3];
}
if (edge_a.p1 != edge_b.p1 || edge_a.p2 != edge_b.p2) {
/* These edges should match but they don't. Print results. */
printf("edge %d of facet %d doesn't match edge %d of facet %d\n",
j, i, vnot + 1, neighbor);
stl_write_facet(stl, (char*)"first facet", i);
stl_write_facet(stl, (char*)"second facet", neighbor);
}
}
}
for (uint32_t i = 0; i < stl->stats.number_of_facets; ++ i) {
for (int j = 0; j < 3; ++ j) {
struct stl_edge {
stl_vertex p1;
stl_vertex p2;
int facet_number;
};
stl_edge edge_a;
edge_a.p1 = stl->facet_start[i].vertex[j];
edge_a.p2 = stl->facet_start[i].vertex[(j + 1) % 3];
int neighbor = stl->neighbors_start[i].neighbor[j];
if (neighbor == -1)
continue; // this edge has no neighbor... Continue.
int vnot = stl->neighbors_start[i].which_vertex_not[j];
stl_edge edge_b;
if (vnot < 3) {
edge_b.p1 = stl->facet_start[neighbor].vertex[(vnot + 2) % 3];
edge_b.p2 = stl->facet_start[neighbor].vertex[(vnot + 1) % 3];
} else {
stl->stats.backwards_edges += 1;
edge_b.p1 = stl->facet_start[neighbor].vertex[(vnot + 1) % 3];
edge_b.p2 = stl->facet_start[neighbor].vertex[(vnot + 2) % 3];
}
if (edge_a.p1 != edge_b.p1 || edge_a.p2 != edge_b.p2) {
// These edges should match but they don't. Print results.
BOOST_LOG_TRIVIAL(info) << "edge " << j << " of facet " << i << " doesn't match edge " << (vnot + 1) << " of facet " << neighbor;
stl_write_facet(stl, (char*)"first facet", i);
stl_write_facet(stl, (char*)"second facet", neighbor);
}
}
}
}
void stl_translate(stl_file *stl, float x, float y, float z)
{
if (stl->error)
return;
stl_vertex new_min(x, y, z);
stl_vertex shift = new_min - stl->stats.min;
for (int i = 0; i < stl->stats.number_of_facets; ++ i)
for (int j = 0; j < 3; ++ j)
stl->facet_start[i].vertex[j] += shift;
stl->stats.min = new_min;
stl->stats.max += shift;
stl_invalidate_shared_vertices(stl);
stl_vertex new_min(x, y, z);
stl_vertex shift = new_min - stl->stats.min;
for (int i = 0; i < stl->stats.number_of_facets; ++ i)
for (int j = 0; j < 3; ++ j)
stl->facet_start[i].vertex[j] += shift;
stl->stats.min = new_min;
stl->stats.max += shift;
}
/* Translates the stl by x,y,z, relatively from wherever it is currently */
void stl_translate_relative(stl_file *stl, float x, float y, float z)
{
if (stl->error)
return;
stl_vertex shift(x, y, z);
for (int i = 0; i < stl->stats.number_of_facets; ++ i)
for (int j = 0; j < 3; ++ j)
stl->facet_start[i].vertex[j] += shift;
stl->stats.min += shift;
stl->stats.max += shift;
stl_invalidate_shared_vertices(stl);
stl_vertex shift(x, y, z);
for (int i = 0; i < stl->stats.number_of_facets; ++ i)
for (int j = 0; j < 3; ++ j)
stl->facet_start[i].vertex[j] += shift;
stl->stats.min += shift;
stl->stats.max += shift;
}
void stl_scale_versor(stl_file *stl, const stl_vertex &versor)
{
if (stl->error)
return;
// Scale extents.
auto s = versor.array();
stl->stats.min.array() *= s;
stl->stats.max.array() *= s;
// Scale size.
stl->stats.size.array() *= s;
// Scale volume.
if (stl->stats.volume > 0.0)
stl->stats.volume *= versor(0) * versor(1) * versor(2);
// Scale the mesh.
for (int i = 0; i < stl->stats.number_of_facets; ++ i)
for (int j = 0; j < 3; ++ j)
stl->facet_start[i].vertex[j].array() *= s;
stl_invalidate_shared_vertices(stl);
// Scale extents.
auto s = versor.array();
stl->stats.min.array() *= s;
stl->stats.max.array() *= s;
// Scale size.
stl->stats.size.array() *= s;
// Scale volume.
if (stl->stats.volume > 0.0)
stl->stats.volume *= versor(0) * versor(1) * versor(2);
// Scale the mesh.
for (int i = 0; i < stl->stats.number_of_facets; ++ i)
for (int j = 0; j < 3; ++ j)
stl->facet_start[i].vertex[j].array() *= s;
}
static void calculate_normals(stl_file *stl)
{
if (stl->error)
return;
stl_normal normal;
for(uint32_t i = 0; i < stl->stats.number_of_facets; i++) {
stl_calculate_normal(normal, &stl->facet_start[i]);
stl_normalize_vector(normal);
stl->facet_start[i].normal = normal;
}
stl_normal normal;
for (uint32_t i = 0; i < stl->stats.number_of_facets; ++ i) {
stl_calculate_normal(normal, &stl->facet_start[i]);
stl_normalize_vector(normal);
stl->facet_start[i].normal = normal;
}
}
void
stl_rotate_x(stl_file *stl, float angle) {
int i;
int j;
double radian_angle = (angle / 180.0) * M_PI;
double c = cos(radian_angle);
double s = sin(radian_angle);
if (stl->error) return;
for(i = 0; i < stl->stats.number_of_facets; i++) {
for(j = 0; j < 3; j++) {
stl_rotate(&stl->facet_start[i].vertex[j](1),
&stl->facet_start[i].vertex[j](2), c, s);
}
}
stl_get_size(stl);
calculate_normals(stl);
static inline void rotate_point_2d(float &x, float &y, const double c, const double s)
{
double xold = x;
double yold = y;
x = float(c * xold - s * yold);
y = float(s * xold + c * yold);
}
void
stl_rotate_y(stl_file *stl, float angle) {
int i;
int j;
double radian_angle = (angle / 180.0) * M_PI;
double c = cos(radian_angle);
double s = sin(radian_angle);
if (stl->error) return;
for(i = 0; i < stl->stats.number_of_facets; i++) {
for(j = 0; j < 3; j++) {
stl_rotate(&stl->facet_start[i].vertex[j](2),
&stl->facet_start[i].vertex[j](0), c, s);
}
}
stl_get_size(stl);
calculate_normals(stl);
void stl_rotate_x(stl_file *stl, float angle)
{
double radian_angle = (angle / 180.0) * M_PI;
double c = cos(radian_angle);
double s = sin(radian_angle);
for (uint32_t i = 0; i < stl->stats.number_of_facets; ++ i)
for (int j = 0; j < 3; ++ j)
rotate_point_2d(stl->facet_start[i].vertex[j](1), stl->facet_start[i].vertex[j](2), c, s);
stl_get_size(stl);
calculate_normals(stl);
}
void
stl_rotate_z(stl_file *stl, float angle) {
int i;
int j;
double radian_angle = (angle / 180.0) * M_PI;
double c = cos(radian_angle);
double s = sin(radian_angle);
if (stl->error) return;
for(i = 0; i < stl->stats.number_of_facets; i++) {
for(j = 0; j < 3; j++) {
stl_rotate(&stl->facet_start[i].vertex[j](0),
&stl->facet_start[i].vertex[j](1), c, s);
}
}
stl_get_size(stl);
calculate_normals(stl);
void stl_rotate_y(stl_file *stl, float angle)
{
double radian_angle = (angle / 180.0) * M_PI;
double c = cos(radian_angle);
double s = sin(radian_angle);
for (uint32_t i = 0; i < stl->stats.number_of_facets; ++ i)
for (int j = 0; j < 3; ++ j)
rotate_point_2d(stl->facet_start[i].vertex[j](2), stl->facet_start[i].vertex[j](0), c, s);
stl_get_size(stl);
calculate_normals(stl);
}
void stl_rotate_z(stl_file *stl, float angle)
{
double radian_angle = (angle / 180.0) * M_PI;
double c = cos(radian_angle);
double s = sin(radian_angle);
for (uint32_t i = 0; i < stl->stats.number_of_facets; ++ i)
for (int j = 0; j < 3; ++ j)
rotate_point_2d(stl->facet_start[i].vertex[j](0), stl->facet_start[i].vertex[j](1), c, s);
stl_get_size(stl);
calculate_normals(stl);
}
void its_rotate_x(indexed_triangle_set &its, float angle)
{
double radian_angle = (angle / 180.0) * M_PI;
double c = cos(radian_angle);
double s = sin(radian_angle);
for (stl_vertex &v : its.vertices)
rotate_point_2d(v(1), v(2), c, s);
}
static void
stl_rotate(float *x, float *y, const double c, const double s) {
double xold = *x;
double yold = *y;
*x = float(c * xold - s * yold);
*y = float(s * xold + c * yold);
void its_rotate_y(indexed_triangle_set& its, float angle)
{
double radian_angle = (angle / 180.0) * M_PI;
double c = cos(radian_angle);
double s = sin(radian_angle);
for (stl_vertex& v : its.vertices)
rotate_point_2d(v(2), v(0), c, s);
}
void its_rotate_z(indexed_triangle_set& its, float angle)
{
double radian_angle = (angle / 180.0) * M_PI;
double c = cos(radian_angle);
double s = sin(radian_angle);
for (stl_vertex& v : its.vertices)
rotate_point_2d(v(0), v(1), c, s);
}
void stl_get_size(stl_file *stl)
{
if (stl->error || stl->stats.number_of_facets == 0)
return;
stl->stats.min = stl->facet_start[0].vertex[0];
stl->stats.max = stl->stats.min;
for (int i = 0; i < stl->stats.number_of_facets; ++ i) {
const stl_facet &face = stl->facet_start[i];
for (int j = 0; j < 3; ++ j) {
stl->stats.min = stl->stats.min.cwiseMin(face.vertex[j]);
stl->stats.max = stl->stats.max.cwiseMax(face.vertex[j]);
}
}
stl->stats.size = stl->stats.max - stl->stats.min;
stl->stats.bounding_diameter = stl->stats.size.norm();
if (stl->stats.number_of_facets == 0)
return;
stl->stats.min = stl->facet_start[0].vertex[0];
stl->stats.max = stl->stats.min;
for (uint32_t i = 0; i < stl->stats.number_of_facets; ++ i) {
const stl_facet &face = stl->facet_start[i];
for (int j = 0; j < 3; ++ j) {
stl->stats.min = stl->stats.min.cwiseMin(face.vertex[j]);
stl->stats.max = stl->stats.max.cwiseMax(face.vertex[j]);
}
}
stl->stats.size = stl->stats.max - stl->stats.min;
stl->stats.bounding_diameter = stl->stats.size.norm();
}
void stl_mirror_xy(stl_file *stl)
{
if (stl->error)
return;
for(int i = 0; i < stl->stats.number_of_facets; i++) {
for(int j = 0; j < 3; j++) {
stl->facet_start[i].vertex[j](2) *= -1.0;
}
}
float temp_size = stl->stats.min(2);
stl->stats.min(2) = stl->stats.max(2);
stl->stats.max(2) = temp_size;
stl->stats.min(2) *= -1.0;
stl->stats.max(2) *= -1.0;
stl_reverse_all_facets(stl);
stl->stats.facets_reversed -= stl->stats.number_of_facets; /* for not altering stats */
for (uint32_t i = 0; i < stl->stats.number_of_facets; ++ i)
for (int j = 0; j < 3; ++ j)
stl->facet_start[i].vertex[j](2) *= -1.0;
float temp_size = stl->stats.min(2);
stl->stats.min(2) = stl->stats.max(2);
stl->stats.max(2) = temp_size;
stl->stats.min(2) *= -1.0;
stl->stats.max(2) *= -1.0;
stl_reverse_all_facets(stl);
stl->stats.facets_reversed -= stl->stats.number_of_facets; /* for not altering stats */
}
void stl_mirror_yz(stl_file *stl)
{
if (stl->error) return;
for (int i = 0; i < stl->stats.number_of_facets; i++) {
for (int j = 0; j < 3; j++) {
stl->facet_start[i].vertex[j](0) *= -1.0;
}
}
float temp_size = stl->stats.min(0);
stl->stats.min(0) = stl->stats.max(0);
stl->stats.max(0) = temp_size;
stl->stats.min(0) *= -1.0;
stl->stats.max(0) *= -1.0;
stl_reverse_all_facets(stl);
stl->stats.facets_reversed -= stl->stats.number_of_facets; /* for not altering stats */
for (uint32_t i = 0; i < stl->stats.number_of_facets; ++ i)
for (int j = 0; j < 3; j++)
stl->facet_start[i].vertex[j](0) *= -1.0;
float temp_size = stl->stats.min(0);
stl->stats.min(0) = stl->stats.max(0);
stl->stats.max(0) = temp_size;
stl->stats.min(0) *= -1.0;
stl->stats.max(0) *= -1.0;
stl_reverse_all_facets(stl);
stl->stats.facets_reversed -= stl->stats.number_of_facets; /* for not altering stats */
}
void stl_mirror_xz(stl_file *stl)
{
if (stl->error)
return;
for (int i = 0; i < stl->stats.number_of_facets; i++) {
for (int j = 0; j < 3; j++) {
stl->facet_start[i].vertex[j](1) *= -1.0;
}
}
float temp_size = stl->stats.min(1);
stl->stats.min(1) = stl->stats.max(1);
stl->stats.max(1) = temp_size;
stl->stats.min(1) *= -1.0;
stl->stats.max(1) *= -1.0;
stl_reverse_all_facets(stl);
stl->stats.facets_reversed -= stl->stats.number_of_facets; /* for not altering stats */
}
static float get_volume(stl_file *stl)
{
if (stl->error)
return 0;
// Choose a point, any point as the reference.
stl_vertex p0 = stl->facet_start[0].vertex[0];
float volume = 0.f;
for(uint32_t i = 0; i < stl->stats.number_of_facets; ++ i) {
// Do dot product to get distance from point to plane.
float height = stl->facet_start[i].normal.dot(stl->facet_start[i].vertex[0] - p0);
float area = get_area(&stl->facet_start[i]);
volume += (area * height) / 3.0f;
}
return volume;
}
void stl_calculate_volume(stl_file *stl)
{
if (stl->error) return;
stl->stats.volume = get_volume(stl);
if(stl->stats.volume < 0.0) {
stl_reverse_all_facets(stl);
stl->stats.volume = -stl->stats.volume;
}
for (uint32_t i = 0; i < stl->stats.number_of_facets; ++ i)
for (int j = 0; j < 3; ++ j)
stl->facet_start[i].vertex[j](1) *= -1.0;
float temp_size = stl->stats.min(1);
stl->stats.min(1) = stl->stats.max(1);
stl->stats.max(1) = temp_size;
stl->stats.min(1) *= -1.0;
stl->stats.max(1) *= -1.0;
stl_reverse_all_facets(stl);
stl->stats.facets_reversed -= stl->stats.number_of_facets; // for not altering stats
}
static float get_area(stl_facet *facet)
{
/* cast to double before calculating cross product because large coordinates
can result in overflowing product
(bad area is responsible for bad volume and bad facets reversal) */
double cross[3][3];
for (int i = 0; i < 3; i++) {
cross[i][0]=(((double)facet->vertex[i](1) * (double)facet->vertex[(i + 1) % 3](2)) -
((double)facet->vertex[i](2) * (double)facet->vertex[(i + 1) % 3](1)));
cross[i][1]=(((double)facet->vertex[i](2) * (double)facet->vertex[(i + 1) % 3](0)) -
((double)facet->vertex[i](0) * (double)facet->vertex[(i + 1) % 3](2)));
cross[i][2]=(((double)facet->vertex[i](0) * (double)facet->vertex[(i + 1) % 3](1)) -
((double)facet->vertex[i](1) * (double)facet->vertex[(i + 1) % 3](0)));
}
/* cast to double before calculating cross product because large coordinates
can result in overflowing product
(bad area is responsible for bad volume and bad facets reversal) */
double cross[3][3];
for (int i = 0; i < 3; i++) {
cross[i][0]=(((double)facet->vertex[i](1) * (double)facet->vertex[(i + 1) % 3](2)) -
((double)facet->vertex[i](2) * (double)facet->vertex[(i + 1) % 3](1)));
cross[i][1]=(((double)facet->vertex[i](2) * (double)facet->vertex[(i + 1) % 3](0)) -
((double)facet->vertex[i](0) * (double)facet->vertex[(i + 1) % 3](2)));
cross[i][2]=(((double)facet->vertex[i](0) * (double)facet->vertex[(i + 1) % 3](1)) -
((double)facet->vertex[i](1) * (double)facet->vertex[(i + 1) % 3](0)));
}
stl_normal sum;
sum(0) = cross[0][0] + cross[1][0] + cross[2][0];
sum(1) = cross[0][1] + cross[1][1] + cross[2][1];
sum(2) = cross[0][2] + cross[1][2] + cross[2][2];
stl_normal sum;
sum(0) = cross[0][0] + cross[1][0] + cross[2][0];
sum(1) = cross[0][1] + cross[1][1] + cross[2][1];
sum(2) = cross[0][2] + cross[1][2] + cross[2][2];
// This should already be done. But just in case, let's do it again.
//FIXME this is questionable. the "sum" normal should be accurate, while the normal "n" may be calculated with a low accuracy.
stl_normal n;
stl_calculate_normal(n, facet);
stl_normalize_vector(n);
return 0.5f * n.dot(sum);
// This should already be done. But just in case, let's do it again.
//FIXME this is questionable. the "sum" normal should be accurate, while the normal "n" may be calculated with a low accuracy.
stl_normal n;
stl_calculate_normal(n, facet);
stl_normalize_vector(n);
return 0.5f * n.dot(sum);
}
void stl_repair(stl_file *stl,
int fixall_flag,
int exact_flag,
int tolerance_flag,
float tolerance,
int increment_flag,
float increment,
int nearby_flag,
int iterations,
int remove_unconnected_flag,
int fill_holes_flag,
int normal_directions_flag,
int normal_values_flag,
int reverse_all_flag,
int verbose_flag) {
int i;
int last_edges_fixed = 0;
if (stl->error) return;
if(exact_flag || fixall_flag || nearby_flag || remove_unconnected_flag
|| fill_holes_flag || normal_directions_flag) {
if (verbose_flag)
printf("Checking exact...\n");
exact_flag = 1;
stl_check_facets_exact(stl);
stl->stats.facets_w_1_bad_edge =
(stl->stats.connected_facets_2_edge -
stl->stats.connected_facets_3_edge);
stl->stats.facets_w_2_bad_edge =
(stl->stats.connected_facets_1_edge -
stl->stats.connected_facets_2_edge);
stl->stats.facets_w_3_bad_edge =
(stl->stats.number_of_facets -
stl->stats.connected_facets_1_edge);
}
if(nearby_flag || fixall_flag) {
if(!tolerance_flag) {
tolerance = stl->stats.shortest_edge;
}
if(!increment_flag) {
increment = stl->stats.bounding_diameter / 10000.0;
}
if(stl->stats.connected_facets_3_edge < stl->stats.number_of_facets) {
for(i = 0; i < iterations; i++) {
if(stl->stats.connected_facets_3_edge <
stl->stats.number_of_facets) {
if (verbose_flag)
printf("\
Checking nearby. Tolerance= %f Iteration=%d of %d...",
tolerance, i + 1, iterations);
stl_check_facets_nearby(stl, tolerance);
if (verbose_flag)
printf(" Fixed %d edges.\n",
stl->stats.edges_fixed - last_edges_fixed);
last_edges_fixed = stl->stats.edges_fixed;
tolerance += increment;
} else {
if (verbose_flag)
printf("\
All facets connected. No further nearby check necessary.\n");
break;
}
}
} else {
if (verbose_flag)
printf("All facets connected. No nearby check necessary.\n");
}
}
if(remove_unconnected_flag || fixall_flag || fill_holes_flag) {
if(stl->stats.connected_facets_3_edge < stl->stats.number_of_facets) {
if (verbose_flag)
printf("Removing unconnected facets...\n");
stl_remove_unconnected_facets(stl);
} else
if (verbose_flag)
printf("No unconnected need to be removed.\n");
}
if(fill_holes_flag || fixall_flag) {
if(stl->stats.connected_facets_3_edge < stl->stats.number_of_facets) {
if (verbose_flag)
printf("Filling holes...\n");
stl_fill_holes(stl);
} else
if (verbose_flag)
printf("No holes need to be filled.\n");
}
if(reverse_all_flag) {
if (verbose_flag)
printf("Reversing all facets...\n");
stl_reverse_all_facets(stl);
}
if(normal_directions_flag || fixall_flag) {
if (verbose_flag)
printf("Checking normal directions...\n");
stl_fix_normal_directions(stl);
}
if(normal_values_flag || fixall_flag) {
if (verbose_flag)
printf("Checking normal values...\n");
stl_fix_normal_values(stl);
}
/* Always calculate the volume. It shouldn't take too long */
if (verbose_flag)
printf("Calculating volume...\n");
stl_calculate_volume(stl);
if(exact_flag) {
if (verbose_flag)
printf("Verifying neighbors...\n");
stl_verify_neighbors(stl);
}
static float get_volume(stl_file *stl)
{
// Choose a point, any point as the reference.
stl_vertex p0 = stl->facet_start[0].vertex[0];
float volume = 0.f;
for (uint32_t i = 0; i < stl->stats.number_of_facets; ++ i) {
// Do dot product to get distance from point to plane.
float height = stl->facet_start[i].normal.dot(stl->facet_start[i].vertex[0] - p0);
float area = get_area(&stl->facet_start[i]);
volume += (area * height) / 3.0f;
}
return volume;
}
void stl_calculate_volume(stl_file *stl)
{
stl->stats.volume = get_volume(stl);
if (stl->stats.volume < 0.0) {
stl_reverse_all_facets(stl);
stl->stats.volume = -stl->stats.volume;
}
}
void stl_repair(
stl_file *stl,
bool fixall_flag,
bool exact_flag,
bool tolerance_flag,
float tolerance,
bool increment_flag,
float increment,
bool nearby_flag,
int iterations,
bool remove_unconnected_flag,
bool fill_holes_flag,
bool normal_directions_flag,
bool normal_values_flag,
bool reverse_all_flag,
bool verbose_flag)
{
if (exact_flag || fixall_flag || nearby_flag || remove_unconnected_flag || fill_holes_flag || normal_directions_flag) {
if (verbose_flag)
printf("Checking exact...\n");
exact_flag = true;
stl_check_facets_exact(stl);
stl->stats.facets_w_1_bad_edge = (stl->stats.connected_facets_2_edge - stl->stats.connected_facets_3_edge);
stl->stats.facets_w_2_bad_edge = (stl->stats.connected_facets_1_edge - stl->stats.connected_facets_2_edge);
stl->stats.facets_w_3_bad_edge = (stl->stats.number_of_facets - stl->stats.connected_facets_1_edge);
}
if (nearby_flag || fixall_flag) {
if (! tolerance_flag)
tolerance = stl->stats.shortest_edge;
if (! increment_flag)
increment = stl->stats.bounding_diameter / 10000.0;
}
if (stl->stats.connected_facets_3_edge < stl->stats.number_of_facets) {
int last_edges_fixed = 0;
for (int i = 0; i < iterations; ++ i) {
if (stl->stats.connected_facets_3_edge < stl->stats.number_of_facets) {
if (verbose_flag)
printf("Checking nearby. Tolerance= %f Iteration=%d of %d...", tolerance, i + 1, iterations);
stl_check_facets_nearby(stl, tolerance);
if (verbose_flag)
printf(" Fixed %d edges.\n", stl->stats.edges_fixed - last_edges_fixed);
last_edges_fixed = stl->stats.edges_fixed;
tolerance += increment;
} else {
if (verbose_flag)
printf("All facets connected. No further nearby check necessary.\n");
break;
}
}
} else if (verbose_flag)
printf("All facets connected. No nearby check necessary.\n");
if (remove_unconnected_flag || fixall_flag || fill_holes_flag) {
if (stl->stats.connected_facets_3_edge < stl->stats.number_of_facets) {
if (verbose_flag)
printf("Removing unconnected facets...\n");
stl_remove_unconnected_facets(stl);
} else if (verbose_flag)
printf("No unconnected need to be removed.\n");
}
if (fill_holes_flag || fixall_flag) {
if (stl->stats.connected_facets_3_edge < stl->stats.number_of_facets) {
if (verbose_flag)
printf("Filling holes...\n");
stl_fill_holes(stl);
} else if (verbose_flag)
printf("No holes need to be filled.\n");
}
if (reverse_all_flag) {
if (verbose_flag)
printf("Reversing all facets...\n");
stl_reverse_all_facets(stl);
}
if (normal_directions_flag || fixall_flag) {
if (verbose_flag)
printf("Checking normal directions...\n");
stl_fix_normal_directions(stl);
}
if (normal_values_flag || fixall_flag) {
if (verbose_flag)
printf("Checking normal values...\n");
stl_fix_normal_values(stl);
}
// Always calculate the volume. It shouldn't take too long.
if (verbose_flag)
printf("Calculating volume...\n");
stl_calculate_volume(stl);
if (exact_flag) {
if (verbose_flag)
printf("Verifying neighbors...\n");
stl_verify_neighbors(stl);
}
}

2
src/libslic3r/Fill/FillRectilinear3.cpp
View file

@ -15,7 +15,7 @@
#include "FillRectilinear3.hpp"
#define SLIC3R_DEBUG
// #define SLIC3R_DEBUG
// Make assert active if SLIC3R_DEBUG
#ifdef SLIC3R_DEBUG

45
src/libslic3r/Format/3mf.cpp
View file

@ -1489,10 +1489,10 @@ namespace Slic3r {
}
// splits volume out of imported geometry
unsigned int triangles_count = volume_data.last_triangle_id - volume_data.first_triangle_id + 1;
ModelVolume* volume = object.add_volume(TriangleMesh());
stl_file& stl = volume->mesh.stl;
stl.stats.type = inmemory;
TriangleMesh triangle_mesh;
stl_file &stl = triangle_mesh.stl;
unsigned int triangles_count = volume_data.last_triangle_id - volume_data.first_triangle_id + 1;
stl.stats.type = inmemory;
stl.stats.number_of_facets = (uint32_t)triangles_count;
stl.stats.original_num_facets = (int)stl.stats.number_of_facets;
stl_allocate(&stl);
@ -1509,9 +1509,11 @@ namespace Slic3r {
}
}
stl_get_size(&stl);
volume->mesh.repair();
volume->center_geometry();
stl_get_size(&stl);
triangle_mesh.repair();
ModelVolume* volume = object.add_volume(std::move(triangle_mesh));
volume->center_geometry_after_creation();
volume->calculate_convex_hull();
// apply volume's name and config data
@ -1879,29 +1881,28 @@ namespace Slic3r {
if (volume == nullptr)
continue;
if (!volume->mesh().repaired)
throw std::runtime_error("store_3mf() requires repair()");
if (!volume->mesh().has_shared_vertices())
throw std::runtime_error("store_3mf() requires shared vertices");
volumes_offsets.insert(VolumeToOffsetsMap::value_type(volume, Offsets(vertices_count))).first;
if (!volume->mesh.repaired)
volume->mesh.repair();
stl_file& stl = volume->mesh.stl;
if (stl.v_shared == nullptr)
stl_generate_shared_vertices(&stl);
if (stl.stats.shared_vertices == 0)
const indexed_triangle_set &its = volume->mesh().its;
if (its.vertices.empty())
{
add_error("Found invalid mesh");
return false;
}
vertices_count += stl.stats.shared_vertices;
vertices_count += its.vertices.size();
const Transform3d& matrix = volume->get_matrix();
for (int i = 0; i < stl.stats.shared_vertices; ++i)
for (size_t i = 0; i < its.vertices.size(); ++i)
{
stream << " <" << VERTEX_TAG << " ";
Vec3f v = (matrix * stl.v_shared[i].cast<double>()).cast<float>();
Vec3f v = (matrix * its.vertices[i].cast<double>()).cast<float>();
stream << "x=\"" << v(0) << "\" ";
stream << "y=\"" << v(1) << "\" ";
stream << "z=\"" << v(2) << "\" />\n";
@ -1920,19 +1921,19 @@ namespace Slic3r {
VolumeToOffsetsMap::iterator volume_it = volumes_offsets.find(volume);
assert(volume_it != volumes_offsets.end());
stl_file& stl = volume->mesh.stl;
const indexed_triangle_set &its = volume->mesh().its;
// updates triangle offsets
volume_it->second.first_triangle_id = triangles_count;
triangles_count += stl.stats.number_of_facets;
triangles_count += its.indices.size();
volume_it->second.last_triangle_id = triangles_count - 1;
for (uint32_t i = 0; i < stl.stats.number_of_facets; ++i)
for (size_t i = 0; i < its.indices.size(); ++ i)
{
stream << " <" << TRIANGLE_TAG << " ";
for (int j = 0; j < 3; ++j)
{
stream << "v" << j + 1 << "=\"" << stl.v_indices[i].vertex[j] + volume_it->second.first_vertex_id << "\" ";
stream << "v" << j + 1 << "=\"" << its.indices[i][j] + volume_it->second.first_vertex_id << "\" ";
}
stream << "/>\n";
}

27
src/libslic3r/Format/AMF.cpp
View file

@ -522,7 +522,8 @@ void AMFParserContext::endElement(const char * /* name */)
case NODE_TYPE_VOLUME:
{
assert(m_object && m_volume);
stl_file &stl = m_volume->mesh.stl;
TriangleMesh mesh;
stl_file &stl = mesh.stl;
stl.stats.type = inmemory;
stl.stats.number_of_facets = int(m_volume_facets.size() / 3);
stl.stats.original_num_facets = stl.stats.number_of_facets;
@ -533,8 +534,9 @@ void AMFParserContext::endElement(const char * /* name */)
memcpy(facet.vertex[v].data(), &m_object_vertices[m_volume_facets[i ++] * 3], 3 * sizeof(float));
}
stl_get_size(&stl);
m_volume->mesh.repair();
m_volume->center_geometry();
mesh.repair();
m_volume->set_mesh(std::move(mesh));
m_volume->center_geometry_after_creation();
m_volume->calculate_convex_hull();
m_volume_facets.clear();
m_volume = nullptr;
@ -923,23 +925,23 @@ bool store_amf(const char *path, Model *model, const DynamicPrintConfig *config)
int num_vertices = 0;
for (ModelVolume *volume : object->volumes) {
vertices_offsets.push_back(num_vertices);
if (! volume->mesh.repaired)
if (! volume->mesh().repaired)
throw std::runtime_error("store_amf() requires repair()");
auto &stl = volume->mesh.stl;
if (stl.v_shared == nullptr)
stl_generate_shared_vertices(&stl);
if (! volume->mesh().has_shared_vertices())
throw std::runtime_error("store_amf() requires shared vertices");
const indexed_triangle_set &its = volume->mesh().its;
const Transform3d& matrix = volume->get_matrix();
for (size_t i = 0; i < stl.stats.shared_vertices; ++i) {
for (size_t i = 0; i < its.vertices.size(); ++i) {
stream << " <vertex>\n";
stream << " <coordinates>\n";
Vec3f v = (matrix * stl.v_shared[i].cast<double>()).cast<float>();
Vec3f v = (matrix * its.vertices[i].cast<double>()).cast<float>();
stream << " <x>" << v(0) << "</x>\n";
stream << " <y>" << v(1) << "</y>\n";
stream << " <z>" << v(2) << "</z>\n";
stream << " </coordinates>\n";
stream << " </vertex>\n";
}
num_vertices += stl.stats.shared_vertices;
num_vertices += its.vertices.size();
}
stream << " </vertices>\n";
for (size_t i_volume = 0; i_volume < object->volumes.size(); ++i_volume) {
@ -956,10 +958,11 @@ bool store_amf(const char *path, Model *model, const DynamicPrintConfig *config)
if (volume->is_modifier())
stream << " <metadata type=\"slic3r.modifier\">1</metadata>\n";
stream << " <metadata type=\"slic3r.volume_type\">" << ModelVolume::type_to_string(volume->type()) << "</metadata>\n";
for (int i = 0; i < (int)volume->mesh.stl.stats.number_of_facets; ++i) {
const indexed_triangle_set &its = volume->mesh().its;
for (size_t i = 0; i < (int)its.indices.size(); ++i) {
stream << " <triangle>\n";
for (int j = 0; j < 3; ++j)
stream << " <v" << j + 1 << ">" << volume->mesh.stl.v_indices[i].vertex[j] + vertices_offset << "</v" << j + 1 << ">\n";
stream << " <v" << j + 1 << ">" << its.indices[i][j] + vertices_offset << "</v" << j + 1 << ">\n";
stream << " </triangle>\n";
}
stream << " </volume>\n";

7
src/libslic3r/Format/PRUS.cpp
View file

@ -161,16 +161,15 @@ static void extract_model_from_archive(
else {
// Header has been extracted. Now read the faces.
stl_file &stl = mesh.stl;
stl.error = 0;
stl.stats.type = inmemory;
stl.stats.number_of_facets = header.nTriangles;
stl.stats.original_num_facets = header.nTriangles;
stl_allocate(&stl);
if (header.nTriangles > 0 && data.size() == 50 * header.nTriangles + sizeof(StlHeader)) {
memcpy((char*)stl.facet_start, data.data() + sizeof(StlHeader), 50 * header.nTriangles);
memcpy((char*)stl.facet_start.data(), data.data() + sizeof(StlHeader), 50 * header.nTriangles);
if (sizeof(stl_facet) > SIZEOF_STL_FACET) {
// The stl.facet_start is not packed tightly. Unpack the array of stl_facets.
unsigned char *data = (unsigned char*)stl.facet_start;
unsigned char *data = (unsigned char*)stl.facet_start.data();
for (size_t i = header.nTriangles - 1; i > 0; -- i)
memmove(data + i * sizeof(stl_facet), data + i * SIZEOF_STL_FACET, SIZEOF_STL_FACET);
}
@ -257,7 +256,7 @@ static void extract_model_from_archive(
stl.stats.number_of_facets = (uint32_t)facets.size();
stl.stats.original_num_facets = (int)facets.size();
stl_allocate(&stl);
memcpy((void*)stl.facet_start, facets.data(), facets.size() * 50);
memcpy((void*)stl.facet_start.data(), facets.data(), facets.size() * 50);
stl_get_size(&stl);
mesh.repair();
// Add a mesh to a model.

3
src/libslic3r/Format/STL.cpp
View file

@ -17,8 +17,7 @@ namespace Slic3r {
bool load_stl(const char *path, Model *model, const char *object_name_in)
{
TriangleMesh mesh;
mesh.ReadSTLFile(path);
if (mesh.stl.error) {
if (! mesh.ReadSTLFile(path)) {
// die "Failed to open $file\n" if !-e $path;
return false;
}

140
src/libslic3r/Model.cpp
View file

@ -160,12 +160,6 @@ Model Model::read_from_archive(const std::string &input_file, DynamicPrintConfig
return model;
}
void Model::repair()
{
for (ModelObject *o : this->objects)
o->repair();
}
ModelObject* Model::add_object()
{
this->objects.emplace_back(new ModelObject(this));
@ -472,7 +466,7 @@ bool Model::looks_like_multipart_object() const
if (obj->volumes.size() > 1 || obj->config.keys().size() > 1)
return false;
for (const ModelVolume *vol : obj->volumes) {
double zmin_this = vol->mesh.bounding_box().min(2);
double zmin_this = vol->mesh().bounding_box().min(2);
if (zmin == std::numeric_limits<double>::max())
zmin = zmin_this;
else if (std::abs(zmin - zmin_this) > EPSILON)
@ -679,7 +673,7 @@ ModelVolume* ModelObject::add_volume(const TriangleMesh &mesh)
{
ModelVolume* v = new ModelVolume(this, mesh);
this->volumes.push_back(v);
v->center_geometry();
v->center_geometry_after_creation();
this->invalidate_bounding_box();
return v;
}
@ -688,7 +682,7 @@ ModelVolume* ModelObject::add_volume(TriangleMesh &&mesh)
{
ModelVolume* v = new ModelVolume(this, std::move(mesh));
this->volumes.push_back(v);
v->center_geometry();
v->center_geometry_after_creation();
this->invalidate_bounding_box();
return v;
}
@ -697,8 +691,9 @@ ModelVolume* ModelObject::add_volume(const ModelVolume &other)
{
ModelVolume* v = new ModelVolume(this, other);
this->volumes.push_back(v);
v->center_geometry();
this->invalidate_bounding_box();
// The volume should already be centered at this point of time when copying shared pointers of the triangle mesh and convex hull.
// v->center_geometry_after_creation();
// this->invalidate_bounding_box();
return v;
}
@ -706,7 +701,7 @@ ModelVolume* ModelObject::add_volume(const ModelVolume &other, TriangleMesh &&me
{
ModelVolume* v = new ModelVolume(this, other, std::move(mesh));
this->volumes.push_back(v);
v->center_geometry();
v->center_geometry_after_creation();
this->invalidate_bounding_box();
return v;
}
@ -827,7 +822,7 @@ TriangleMesh ModelObject::raw_mesh() const
for (const ModelVolume *v : this->volumes)
if (v->is_model_part())
{
TriangleMesh vol_mesh(v->mesh);
TriangleMesh vol_mesh(v->mesh());
vol_mesh.transform(v->get_matrix());
mesh.merge(vol_mesh);
}
@ -840,7 +835,7 @@ TriangleMesh ModelObject::full_raw_mesh() const
TriangleMesh mesh;
for (const ModelVolume *v : this->volumes)
{
TriangleMesh vol_mesh(v->mesh);
TriangleMesh vol_mesh(v->mesh());
vol_mesh.transform(v->get_matrix());
mesh.merge(vol_mesh);
}
@ -854,7 +849,7 @@ const BoundingBoxf3& ModelObject::raw_mesh_bounding_box() const
m_raw_mesh_bounding_box.reset();
for (const ModelVolume *v : this->volumes)
if (v->is_model_part())
m_raw_mesh_bounding_box.merge(v->mesh.transformed_bounding_box(v->get_matrix()));
m_raw_mesh_bounding_box.merge(v->mesh().transformed_bounding_box(v->get_matrix()));
}
return m_raw_mesh_bounding_box;
}
@ -863,7 +858,7 @@ BoundingBoxf3 ModelObject::full_raw_mesh_bounding_box() const
{
BoundingBoxf3 bb;
for (const ModelVolume *v : this->volumes)
bb.merge(v->mesh.transformed_bounding_box(v->get_matrix()));
bb.merge(v->mesh().transformed_bounding_box(v->get_matrix()));
return bb;
}
@ -881,7 +876,7 @@ const BoundingBoxf3& ModelObject::raw_bounding_box() const
for (const ModelVolume *v : this->volumes)
{
if (v->is_model_part())
m_raw_bounding_box.merge(v->mesh.transformed_bounding_box(inst_matrix * v->get_matrix()));
m_raw_bounding_box.merge(v->mesh().transformed_bounding_box(inst_matrix * v->get_matrix()));
}
}
return m_raw_bounding_box;
@ -895,7 +890,7 @@ BoundingBoxf3 ModelObject::instance_bounding_box(size_t instance_idx, bool dont_
for (ModelVolume *v : this->volumes)
{
if (v->is_model_part())
bb.merge(v->mesh.transformed_bounding_box(inst_matrix * v->get_matrix()));
bb.merge(v->mesh().transformed_bounding_box(inst_matrix * v->get_matrix()));
}
return bb;
}
@ -908,21 +903,20 @@ Polygon ModelObject::convex_hull_2d(const Transform3d &trafo_instance) const
Points pts;
for (const ModelVolume *v : this->volumes)
if (v->is_model_part()) {
const stl_file &stl = v->mesh.stl;
Transform3d trafo = trafo_instance * v->get_matrix();
if (stl.v_shared == nullptr) {
const indexed_triangle_set &its = v->mesh().its;
if (its.vertices.empty()) {
// Using the STL faces.
for (unsigned int i = 0; i < stl.stats.number_of_facets; ++ i) {
const stl_facet &facet = stl.facet_start[i];
const stl_file& stl = v->mesh().stl;
for (const stl_facet &facet : stl.facet_start)
for (size_t j = 0; j < 3; ++ j) {
Vec3d p = trafo * facet.vertex[j].cast<double>();
pts.emplace_back(coord_t(scale_(p.x())), coord_t(scale_(p.y())));
}
}
} else {
// Using the shared vertices should be a bit quicker than using the STL faces.
for (int i = 0; i < stl.stats.shared_vertices; ++ i) {
Vec3d p = trafo * stl.v_shared[i].cast<double>();
for (size_t i = 0; i < its.vertices.size(); ++ i) {
Vec3d p = trafo * its.vertices[i].cast<double>();
pts.emplace_back(coord_t(scale_(p.x())), coord_t(scale_(p.y())));
}
}
@ -1039,6 +1033,7 @@ void ModelObject::mirror(Axis axis)
this->invalidate_bounding_box();
}
// This method could only be called before the meshes of this ModelVolumes are not shared!
void ModelObject::scale_mesh(const Vec3d &versor)
{
for (ModelVolume *v : this->volumes)
@ -1062,14 +1057,14 @@ size_t ModelObject::facets_count() const
size_t num = 0;
for (const ModelVolume *v : this->volumes)
if (v->is_model_part())
num += v->mesh.stl.stats.number_of_facets;
num += v->mesh().stl.stats.number_of_facets;
return num;
}
bool ModelObject::needed_repair() const
{
for (const ModelVolume *v : this->volumes)
if (v->is_model_part() && v->mesh.needed_repair())
if (v->is_model_part() && v->mesh().needed_repair())
return true;
return false;
}
@ -1135,11 +1130,12 @@ ModelObjectPtrs ModelObject::cut(size_t instance, coordf_t z, bool keep_upper, b
// Transform the mesh by the combined transformation matrix.
// Flip the triangles in case the composite transformation is left handed.
volume->mesh.transform(instance_matrix * volume_matrix, true);
TriangleMesh mesh(volume->mesh());
mesh.transform(instance_matrix * volume_matrix, true);
volume->reset_mesh();
// Perform cut
volume->mesh.require_shared_vertices(); // TriangleMeshSlicer needs this
TriangleMeshSlicer tms(&volume->mesh);
TriangleMeshSlicer tms(&mesh);
tms.cut(float(z), &upper_mesh, &lower_mesh);
// Reset volume transformation except for offset
@ -1158,14 +1154,14 @@ ModelObjectPtrs ModelObject::cut(size_t instance, coordf_t z, bool keep_upper, b
if (keep_upper && upper_mesh.facets_count() > 0) {
ModelVolume* vol = upper->add_volume(upper_mesh);
vol->name = volume->name;
vol->config = volume->config;
vol->name = volume->name;
vol->config = volume->config;
vol->set_material(volume->material_id(), *volume->material());
}
if (keep_lower && lower_mesh.facets_count() > 0) {
ModelVolume* vol = lower->add_volume(lower_mesh);
vol->name = volume->name;
vol->config = volume->config;
vol->name = volume->name;
vol->config = volume->config;
vol->set_material(volume->material_id(), *volume->material());
// Compute the lower part instances' bounding boxes to figure out where to place
@ -1233,7 +1229,7 @@ void ModelObject::split(ModelObjectPtrs* new_objects)
}
ModelVolume* volume = this->volumes.front();
TriangleMeshPtrs meshptrs = volume->mesh.split();
TriangleMeshPtrs meshptrs = volume->mesh().split();
for (TriangleMesh *mesh : meshptrs) {
mesh->repair();
@ -1260,12 +1256,6 @@ void ModelObject::split(ModelObjectPtrs* new_objects)
return;
}
void ModelObject::repair()
{
for (ModelVolume *v : this->volumes)
v->mesh.repair();
}
// Support for non-uniform scaling of instances. If an instance is rotated by angles, which are not multiples of ninety degrees,
// then the scaling in world coordinate system is not representable by the Geometry::Transformation structure.
// This situation is solved by baking in the instance transformation into the mesh vertices.
@ -1295,8 +1285,8 @@ void ModelObject::bake_xy_rotation_into_meshes(size_t instance_idx)
// Adjust the meshes.
// Transformation to be applied to the meshes.
Eigen::Matrix3d mesh_trafo_3x3 = reference_trafo.get_matrix(true, false, uniform_scaling, ! has_mirrorring).matrix().block<3, 3>(0, 0);
Transform3d volume_offset_correction = this->instances[instance_idx]->get_transformation().get_matrix().inverse() * reference_trafo.get_matrix();
Eigen::Matrix3d mesh_trafo_3x3 = reference_trafo.get_matrix(true, false, uniform_scaling, ! has_mirrorring).matrix().block<3, 3>(0, 0);
Transform3d volume_offset_correction = this->instances[instance_idx]->get_transformation().get_matrix().inverse() * reference_trafo.get_matrix();
for (ModelVolume *model_volume : this->volumes) {
const Geometry::Transformation volume_trafo = model_volume->get_transformation();
bool volume_left_handed = volume_trafo.is_left_handed();
@ -1306,7 +1296,8 @@ void ModelObject::bake_xy_rotation_into_meshes(size_t instance_idx)
double volume_new_scaling_factor = volume_uniform_scaling ? volume_trafo.get_scaling_factor().x() : 1.;
// Transform the mesh.
Matrix3d volume_trafo_3x3 = volume_trafo.get_matrix(true, false, volume_uniform_scaling, !volume_has_mirrorring).matrix().block<3, 3>(0, 0);
model_volume->transform_mesh(mesh_trafo_3x3 * volume_trafo_3x3, left_handed != volume_left_handed);
// Following method creates a new shared_ptr<TriangleMesh>
model_volume->transform_this_mesh(mesh_trafo_3x3 * volume_trafo_3x3, left_handed != volume_left_handed);
// Reset the rotation, scaling and mirroring.
model_volume->set_rotation(Vec3d(0., 0., 0.));
model_volume->set_scaling_factor(Vec3d(volume_new_scaling_factor, volume_new_scaling_factor, volume_new_scaling_factor));
@ -1347,13 +1338,9 @@ double ModelObject::get_instance_min_z(size_t instance_idx) const
Transform3d mv = mi * v->get_matrix();
const TriangleMesh& hull = v->get_convex_hull();
for (uint32_t f = 0; f < hull.stl.stats.number_of_facets; ++f)
{
const stl_facet* facet = hull.stl.facet_start + f;
min_z = std::min(min_z, Vec3d::UnitZ().dot(mv * facet->vertex[0].cast<double>()));
min_z = std::min(min_z, Vec3d::UnitZ().dot(mv * facet->vertex[1].cast<double>()));
min_z = std::min(min_z, Vec3d::UnitZ().dot(mv * facet->vertex[2].cast<double>()));
}
for (const stl_facet &facet : hull.stl.facet_start)
for (int i = 0; i < 3; ++ i)
min_z = std::min(min_z, (mv * facet.vertex[i].cast<double>()).z());
}
return min_z + inst->get_offset(Z);
@ -1452,7 +1439,7 @@ std::string ModelObject::get_export_filename() const
stl_stats ModelObject::get_object_stl_stats() const
{
if (this->volumes.size() == 1)
return this->volumes[0]->mesh.stl.stats;
return this->volumes[0]->mesh().stl.stats;
stl_stats full_stats;
memset(&full_stats, 0, sizeof(stl_stats));
@ -1463,7 +1450,7 @@ stl_stats ModelObject::get_object_stl_stats() const
if (volume->id() == this->volumes[0]->id())
continue;
const stl_stats& stats = volume->mesh.stl.stats;
const stl_stats& stats = volume->mesh().stl.stats;
// initialize full_stats (for repaired errors)
full_stats.degenerate_facets += stats.degenerate_facets;
@ -1531,30 +1518,30 @@ bool ModelVolume::is_splittable() const
{
// the call mesh.is_splittable() is expensive, so cache the value to calculate it only once
if (m_is_splittable == -1)
m_is_splittable = (int)mesh.is_splittable();
m_is_splittable = (int)this->mesh().is_splittable();
return m_is_splittable == 1;
}
void ModelVolume::center_geometry()
void ModelVolume::center_geometry_after_creation()
{
Vec3d shift = mesh.bounding_box().center();
Vec3d shift = this->mesh().bounding_box().center();
if (!shift.isApprox(Vec3d::Zero()))
{
mesh.translate(-(float)shift(0), -(float)shift(1), -(float)shift(2));
m_convex_hull.translate(-(float)shift(0), -(float)shift(1), -(float)shift(2));
m_mesh->translate(-(float)shift(0), -(float)shift(1), -(float)shift(2));
m_convex_hull->translate(-(float)shift(0), -(float)shift(1), -(float)shift(2));
translate(shift);
}
}
void ModelVolume::calculate_convex_hull()
{
m_convex_hull = mesh.convex_hull_3d();
m_convex_hull = std::make_shared<TriangleMesh>(this->mesh().convex_hull_3d());
}
int ModelVolume::get_mesh_errors_count() const
{
const stl_stats& stats = this->mesh.stl.stats;
const stl_stats& stats = this->mesh().stl.stats;
return stats.degenerate_facets + stats.edges_fixed + stats.facets_removed +
stats.facets_added + stats.facets_reversed + stats.backwards_edges;
@ -1562,7 +1549,7 @@ int ModelVolume::get_mesh_errors_count() const
const TriangleMesh& ModelVolume::get_convex_hull() const
{
return m_convex_hull;
return *m_convex_hull.get();
}
ModelVolumeType ModelVolume::type_from_string(const std::string &s)
@ -1602,7 +1589,7 @@ std::string ModelVolume::type_to_string(const ModelVolumeType t)
// This is useful to assign different materials to different volumes of an object.
size_t ModelVolume::split(unsigned int max_extruders)
{
TriangleMeshPtrs meshptrs = this->mesh.split();
TriangleMeshPtrs meshptrs = this->mesh().split();
if (meshptrs.size() <= 1) {
delete meshptrs.front();
return 1;
@ -1619,7 +1606,7 @@ size_t ModelVolume::split(unsigned int max_extruders)
mesh->repair();
if (idx == 0)
{
this->mesh = std::move(*mesh);
this->set_mesh(std::move(*mesh));
this->calculate_convex_hull();
// Assign a new unique ID, so that a new GLVolume will be generated.
this->set_new_unique_id();
@ -1628,7 +1615,7 @@ size_t ModelVolume::split(unsigned int max_extruders)
this->object->volumes.insert(this->object->volumes.begin() + (++ivolume), new ModelVolume(object, *this, std::move(*mesh)));
this->object->volumes[ivolume]->set_offset(Vec3d::Zero());
this->object->volumes[ivolume]->center_geometry();
this->object->volumes[ivolume]->center_geometry_after_creation();
this->object->volumes[ivolume]->translate(offset);
this->object->volumes[ivolume]->name = name + "_" + std::to_string(idx + 1);
this->object->volumes[ivolume]->config.set_deserialize("extruder", Model::get_auto_extruder_id_as_string(max_extruders));
@ -1694,24 +1681,33 @@ void ModelVolume::mirror(Axis axis)
set_mirror(mirror);
}
// This method could only be called before the meshes of this ModelVolumes are not shared!
void ModelVolume::scale_geometry(const Vec3d& versor)
{
mesh.scale(versor);
m_convex_hull.scale(versor);
m_mesh->scale(versor);
m_convex_hull->scale(versor);
}
void ModelVolume::transform_mesh(const Transform3d &mesh_trafo, bool fix_left_handed)
void ModelVolume::transform_this_mesh(const Transform3d &mesh_trafo, bool fix_left_handed)
{
this->mesh.transform(mesh_trafo, fix_left_handed);
this->m_convex_hull.transform(mesh_trafo, fix_left_handed);
TriangleMesh mesh = this->mesh();
mesh.transform(mesh_trafo, fix_left_handed);
this->set_mesh(std::move(mesh));
TriangleMesh convex_hull = this->get_convex_hull();
convex_hull.transform(mesh_trafo, fix_left_handed);
this->m_convex_hull = std::make_shared<TriangleMesh>(std::move(convex_hull));
// Let the rest of the application know that the geometry changed, so the meshes have to be reloaded.
this->set_new_unique_id();
}
void ModelVolume::transform_mesh(const Matrix3d &matrix, bool fix_left_handed)
void ModelVolume::transform_this_mesh(const Matrix3d &matrix, bool fix_left_handed)
{
this->mesh.transform(matrix, fix_left_handed);
this->m_convex_hull.transform(matrix, fix_left_handed);
TriangleMesh mesh = this->mesh();
mesh.transform(matrix, fix_left_handed);
this->set_mesh(std::move(mesh));
TriangleMesh convex_hull = this->get_convex_hull();
convex_hull.transform(matrix, fix_left_handed);
this->m_convex_hull = std::make_shared<TriangleMesh>(std::move(convex_hull));
// Let the rest of the application know that the geometry changed, so the meshes have to be reloaded.
this->set_new_unique_id();
}

46
src/libslic3r/Model.hpp
View file

@ -7,7 +7,9 @@
#include "Point.hpp"
#include "TriangleMesh.hpp"
#include "Slicing.hpp"
#include <map>
#include <memory>
#include <string>
#include <utility>
#include <vector>
@ -261,6 +263,7 @@ public:
void rotate(double angle, const Vec3d& axis);
void mirror(Axis axis);
// This method could only be called before the meshes of this ModelVolumes are not shared!
void scale_mesh(const Vec3d& versor);
size_t materials_count() const;
@ -268,7 +271,6 @@ public:
bool needed_repair() const;
ModelObjectPtrs cut(size_t instance, coordf_t z, bool keep_upper = true, bool keep_lower = true, bool rotate_lower = false); // Note: z is in world coordinates
void split(ModelObjectPtrs* new_objects);
void repair();
// Support for non-uniform scaling of instances. If an instance is rotated by angles, which are not multiples of ninety degrees,
// then the scaling in world coordinate system is not representable by the Geometry::Transformation structure.
// This situation is solved by baking in the instance transformation into the mesh vertices.
@ -340,7 +342,12 @@ class ModelVolume : public ModelBase
public:
std::string name;
// The triangular model.
TriangleMesh mesh;
const TriangleMesh& mesh() const { return *m_mesh.get(); }
void set_mesh(const TriangleMesh &mesh) { m_mesh = std::make_shared<TriangleMesh>(mesh); }
void set_mesh(TriangleMesh &&mesh) { m_mesh = std::make_shared<TriangleMesh>(std::move(mesh)); }
void set_mesh(std::shared_ptr<TriangleMesh> &mesh) { m_mesh = mesh; }
void set_mesh(std::unique_ptr<TriangleMesh> &&mesh) { m_mesh = std::move(mesh); }
void reset_mesh() { m_mesh = std::make_shared<TriangleMesh>(); }
// Configuration parameters specific to an object model geometry or a modifier volume,
// overriding the global Slic3r settings and the ModelObject settings.
DynamicPrintConfig config;
@ -377,13 +384,16 @@ public:
void rotate(double angle, const Vec3d& axis);
void mirror(Axis axis);
// This method could only be called before the meshes of this ModelVolumes are not shared!
void scale_geometry(const Vec3d& versor);
// translates the mesh and the convex hull so that the origin of their vertices is in the center of this volume's bounding box
void center_geometry();
// Translates the mesh and the convex hull so that the origin of their vertices is in the center of this volume's bounding box.
// Attention! This method may only be called just after ModelVolume creation! It must not be called once the TriangleMesh of this ModelVolume is shared!
void center_geometry_after_creation();
void calculate_convex_hull();
const TriangleMesh& get_convex_hull() const;
std::shared_ptr<const TriangleMesh> get_convex_hull_shared_ptr() const { return m_convex_hull; }
// Get count of errors in the mesh
int get_mesh_errors_count() const;
@ -430,18 +440,20 @@ protected:
explicit ModelVolume(const ModelVolume &rhs) = default;
void set_model_object(ModelObject *model_object) { object = model_object; }
void transform_mesh(const Transform3d& t, bool fix_left_handed);
void transform_mesh(const Matrix3d& m, bool fix_left_handed);
void transform_this_mesh(const Transform3d& t, bool fix_left_handed);
void transform_this_mesh(const Matrix3d& m, bool fix_left_handed);
private:
// Parent object owning this ModelVolume.
ModelObject* object;
ModelObject* object;
// The triangular model.
std::shared_ptr<TriangleMesh> m_mesh;
// Is it an object to be printed, or a modifier volume?
ModelVolumeType m_type;
t_model_material_id m_material_id;
ModelVolumeType m_type;
t_model_material_id m_material_id;
// The convex hull of this model's mesh.
TriangleMesh m_convex_hull;
Geometry::Transformation m_transformation;
std::shared_ptr<TriangleMesh> m_convex_hull;
Geometry::Transformation m_transformation;
// flag to optimize the checking if the volume is splittable
// -1 -> is unknown value (before first cheking)
@ -449,24 +461,24 @@ private:
// 1 -> is splittable
mutable int m_is_splittable{ -1 };
ModelVolume(ModelObject *object, const TriangleMesh &mesh) : mesh(mesh), m_type(ModelVolumeType::MODEL_PART), object(object)
ModelVolume(ModelObject *object, const TriangleMesh &mesh) : m_mesh(new TriangleMesh(mesh)), m_type(ModelVolumeType::MODEL_PART), object(object)
{
if (mesh.stl.stats.number_of_facets > 1)
calculate_convex_hull();
}
ModelVolume(ModelObject *object, TriangleMesh &&mesh, TriangleMesh &&convex_hull) :
mesh(std::move(mesh)), m_convex_hull(std::move(convex_hull)), m_type(ModelVolumeType::MODEL_PART), object(object) {}
m_mesh(new TriangleMesh(std::move(mesh))), m_convex_hull(new TriangleMesh(std::move(convex_hull))), m_type(ModelVolumeType::MODEL_PART), object(object) {}
// Copying an existing volume, therefore this volume will get a copy of the ID assigned.
ModelVolume(ModelObject *object, const ModelVolume &other) :
ModelBase(other), // copy the ID
name(other.name), mesh(other.mesh), m_convex_hull(other.m_convex_hull), config(other.config), m_type(other.m_type), object(object), m_transformation(other.m_transformation)
name(other.name), m_mesh(other.m_mesh), m_convex_hull(other.m_convex_hull), config(other.config), m_type(other.m_type), object(object), m_transformation(other.m_transformation)
{
this->set_material_id(other.material_id());
}
// Providing a new mesh, therefore this volume will get a new unique ID assigned.
ModelVolume(ModelObject *object, const ModelVolume &other, const TriangleMesh &&mesh) :
name(other.name), mesh(std::move(mesh)), config(other.config), m_type(other.m_type), object(object), m_transformation(other.m_transformation)
name(other.name), m_mesh(new TriangleMesh(std::move(mesh))), config(other.config), m_type(other.m_type), object(object), m_transformation(other.m_transformation)
{
this->set_material_id(other.material_id());
if (mesh.stl.stats.number_of_facets > 1)
@ -597,10 +609,6 @@ public:
static Model read_from_file(const std::string &input_file, DynamicPrintConfig *config = nullptr, bool add_default_instances = true);
static Model read_from_archive(const std::string &input_file, DynamicPrintConfig *config, bool add_default_instances = true);
/// Repair the ModelObjects of the current Model.
/// This function calls repair function on each TriangleMesh of each model object volume
void repair();
// Add a new ModelObject to this Model, generate a new ID for this ModelObject.
ModelObject* add_object();
ModelObject* add_object(const char *name, const char *path, const TriangleMesh &mesh);

14
src/libslic3r/PrintObject.cpp
View file

@ -1797,7 +1797,7 @@ std::vector<ExPolygons> PrintObject::_slice_volumes(const std::vector<float> &z,
if (! volumes.empty()) {
// Compose mesh.
//FIXME better to perform slicing over each volume separately and then to use a Boolean operation to merge them.
TriangleMesh mesh(volumes.front()->mesh);
TriangleMesh mesh(volumes.front()->mesh());
mesh.transform(volumes.front()->get_matrix(), true);
assert(mesh.repaired);
if (volumes.size() == 1 && mesh.repaired) {
@ -1806,7 +1806,7 @@ std::vector<ExPolygons> PrintObject::_slice_volumes(const std::vector<float> &z,
}
for (size_t idx_volume = 1; idx_volume < volumes.size(); ++ idx_volume) {
const ModelVolume &model_volume = *volumes[idx_volume];
TriangleMesh vol_mesh(model_volume.mesh);
TriangleMesh vol_mesh(model_volume.mesh());
vol_mesh.transform(model_volume.get_matrix(), true);
mesh.merge(vol_mesh);
}
@ -1815,10 +1815,11 @@ std::vector<ExPolygons> PrintObject::_slice_volumes(const std::vector<float> &z,
// apply XY shift
mesh.translate(- unscale<float>(m_copies_shift(0)), - unscale<float>(m_copies_shift(1)), 0);
// perform actual slicing
TriangleMeshSlicer mslicer;
const Print *print = this->print();
auto callback = TriangleMeshSlicer::throw_on_cancel_callback_type([print](){print->throw_if_canceled();});
mesh.require_shared_vertices(); // TriangleMeshSlicer needs this
// TriangleMeshSlicer needs shared vertices, also this calls the repair() function.
mesh.require_shared_vertices();
TriangleMeshSlicer mslicer;
mslicer.init(&mesh, callback);
mslicer.slice(z, float(m_config.slice_closing_radius.value), &layers, callback);
m_print->throw_if_canceled();
@ -1832,7 +1833,7 @@ std::vector<ExPolygons> PrintObject::_slice_volume(const std::vector<float> &z,
std::vector<ExPolygons> layers;
// Compose mesh.
//FIXME better to perform slicing over each volume separately and then to use a Boolean operation to merge them.
TriangleMesh mesh(volume.mesh);
TriangleMesh mesh(volume.mesh());
mesh.transform(volume.get_matrix(), true);
if (mesh.repaired) {
//FIXME The admesh repair function may break the face connectivity, rather refresh it here as the slicing code relies on it.
@ -1846,7 +1847,8 @@ std::vector<ExPolygons> PrintObject::_slice_volume(const std::vector<float> &z,
TriangleMeshSlicer mslicer;
const Print *print = this->print();
auto callback = TriangleMeshSlicer::throw_on_cancel_callback_type([print](){print->throw_if_canceled();});
mesh.require_shared_vertices(); // TriangleMeshSlicer needs this
// TriangleMeshSlicer needs the shared vertices.
mesh.require_shared_vertices();
mslicer.init(&mesh, callback);
mslicer.slice(z, float(m_config.slice_closing_radius.value), &layers, callback);
m_print->throw_if_canceled();

17
src/libslic3r/SLA/SLASupportTreeIGL.cpp
View file

@ -121,19 +121,10 @@ EigenMesh3D::EigenMesh3D(const TriangleMesh& tmesh): m_aabb(new AABBImpl()) {
V.resize(3*stl.stats.number_of_facets, 3);
F.resize(stl.stats.number_of_facets, 3);
for (unsigned int i = 0; i < stl.stats.number_of_facets; ++i) {
const stl_facet* facet = stl.facet_start+i;
V(3*i+0, 0) = double(facet->vertex[0](0));
V(3*i+0, 1) = double(facet->vertex[0](1));
V(3*i+0, 2) = double(facet->vertex[0](2));
V(3*i+1, 0) = double(facet->vertex[1](0));
V(3*i+1, 1) = double(facet->vertex[1](1));
V(3*i+1, 2) = double(facet->vertex[1](2));
V(3*i+2, 0) = double(facet->vertex[2](0));
V(3*i+2, 1) = double(facet->vertex[2](1));
V(3*i+2, 2) = double(facet->vertex[2](2));
const stl_facet &facet = stl.facet_start[i];
V.block<1, 3>(3 * i + 0, 0) = facet.vertex[0].cast<double>();
V.block<1, 3>(3 * i + 1, 0) = facet.vertex[1].cast<double>();
V.block<1, 3>(3 * i + 2, 0) = facet.vertex[2].cast<double>();
F(i, 0) = int(3*i+0);
F(i, 1) = int(3*i+1);
F(i, 2) = int(3*i+2);

2
src/libslic3r/Slicing.cpp
View file

@ -227,7 +227,7 @@ std::vector<coordf_t> layer_height_profile_adaptive(
as.set_slicing_parameters(slicing_params);
for (const ModelVolume *volume : volumes)
if (volume->is_model_part())
as.add_mesh(&volume->mesh);
as.add_mesh(&volume->mesh());
as.prepare();
// 2) Generate layers using the algorithm of @platsch

4
src/libslic3r/SlicingAdaptive.cpp
View file

@ -27,8 +27,8 @@ void SlicingAdaptive::prepare()
nfaces_total += (*it_mesh)->stl.stats.number_of_facets;
m_faces.reserve(nfaces_total);
for (std::vector<const TriangleMesh*>::const_iterator it_mesh = m_meshes.begin(); it_mesh != m_meshes.end(); ++ it_mesh)
for (int i = 0; i < (*it_mesh)->stl.stats.number_of_facets; ++ i)
m_faces.push_back((*it_mesh)->stl.facet_start + i);
for (const stl_facet &face : (*it_mesh)->stl.facet_start)
m_faces.emplace_back(&face);
// 2) Sort faces lexicographically by their Z span.
std::sort(m_faces.begin(), m_faces.end(), [](const stl_facet *f1, const stl_facet *f2) {

262
src/libslic3r/TriangleMesh.cpp
View file

@ -42,20 +42,17 @@
namespace Slic3r {
TriangleMesh::TriangleMesh(const Pointf3s &points, const std::vector<Vec3crd>& facets)
: repaired(false)
TriangleMesh::TriangleMesh(const Pointf3s &points, const std::vector<Vec3crd>& facets) : repaired(false)
{
stl_initialize(&this->stl);
stl_file &stl = this->stl;
stl.error = 0;
stl.stats.type = inmemory;
// count facets and allocate memory
stl.stats.number_of_facets = facets.size();
stl.stats.number_of_facets = (uint32_t)facets.size();
stl.stats.original_num_facets = stl.stats.number_of_facets;
stl_allocate(&stl);
for (uint32_t i = 0; i < stl.stats.number_of_facets; i++) {
for (uint32_t i = 0; i < stl.stats.number_of_facets; ++ i) {
stl_facet facet;
facet.vertex[0] = points[facets[i](0)].cast<float>();
facet.vertex[1] = points[facets[i](1)].cast<float>();
@ -73,57 +70,37 @@ TriangleMesh::TriangleMesh(const Pointf3s &points, const std::vector<Vec3crd>& f
stl_get_size(&stl);
}
TriangleMesh& TriangleMesh::operator=(const TriangleMesh &other)
{
stl_close(&this->stl);
this->stl = other.stl;
this->repaired = other.repaired;
this->stl.heads = nullptr;
this->stl.tail = nullptr;
this->stl.error = other.stl.error;
if (other.stl.facet_start != nullptr) {
this->stl.facet_start = (stl_facet*)calloc(other.stl.stats.number_of_facets, sizeof(stl_facet));
std::copy(other.stl.facet_start, other.stl.facet_start + other.stl.stats.number_of_facets, this->stl.facet_start);
}
if (other.stl.neighbors_start != nullptr) {
this->stl.neighbors_start = (stl_neighbors*)calloc(other.stl.stats.number_of_facets, sizeof(stl_neighbors));
std::copy(other.stl.neighbors_start, other.stl.neighbors_start + other.stl.stats.number_of_facets, this->stl.neighbors_start);
}
if (other.stl.v_indices != nullptr) {
this->stl.v_indices = (v_indices_struct*)calloc(other.stl.stats.number_of_facets, sizeof(v_indices_struct));
std::copy(other.stl.v_indices, other.stl.v_indices + other.stl.stats.number_of_facets, this->stl.v_indices);
}
if (other.stl.v_shared != nullptr) {
this->stl.v_shared = (stl_vertex*)calloc(other.stl.stats.shared_vertices, sizeof(stl_vertex));
std::copy(other.stl.v_shared, other.stl.v_shared + other.stl.stats.shared_vertices, this->stl.v_shared);
}
return *this;
}
// #define SLIC3R_TRACE_REPAIR
void TriangleMesh::repair()
void TriangleMesh::repair(bool update_shared_vertices)
{
if (this->repaired) return;
if (this->repaired) {
if (update_shared_vertices)
this->require_shared_vertices();
return;
}
// admesh fails when repairing empty meshes
if (this->stl.stats.number_of_facets == 0) return;
if (this->stl.stats.number_of_facets == 0)
return;
BOOST_LOG_TRIVIAL(debug) << "TriangleMesh::repair() started";
// checking exact
#ifdef SLIC3R_TRACE_REPAIR
BOOST_LOG_TRIVIAL(trace) << "\tstl_check_faces_exact";
#endif /* SLIC3R_TRACE_REPAIR */
assert(stl_validate(&this->stl));
stl_check_facets_exact(&stl);
assert(stl_validate(&this->stl));
stl.stats.facets_w_1_bad_edge = (stl.stats.connected_facets_2_edge - stl.stats.connected_facets_3_edge);
stl.stats.facets_w_2_bad_edge = (stl.stats.connected_facets_1_edge - stl.stats.connected_facets_2_edge);
stl.stats.facets_w_3_bad_edge = (stl.stats.number_of_facets - stl.stats.connected_facets_1_edge);
// checking nearby
//int last_edges_fixed = 0;
float tolerance = stl.stats.shortest_edge;
float increment = stl.stats.bounding_diameter / 10000.0;
float tolerance = (float)stl.stats.shortest_edge;
float increment = (float)stl.stats.bounding_diameter / 10000.0f;
int iterations = 2;
if (stl.stats.connected_facets_3_edge < (int)stl.stats.number_of_facets) {
for (int i = 0; i < iterations; i++) {
@ -141,6 +118,7 @@ void TriangleMesh::repair()
}
}
}
assert(stl_validate(&this->stl));
// remove_unconnected
if (stl.stats.connected_facets_3_edge < (int)stl.stats.number_of_facets) {
@ -148,6 +126,7 @@ void TriangleMesh::repair()
BOOST_LOG_TRIVIAL(trace) << "\tstl_remove_unconnected_facets";
#endif /* SLIC3R_TRACE_REPAIR */
stl_remove_unconnected_facets(&stl);
assert(stl_validate(&this->stl));
}
// fill_holes
@ -168,28 +147,38 @@ void TriangleMesh::repair()
BOOST_LOG_TRIVIAL(trace) << "\tstl_fix_normal_directions";
#endif /* SLIC3R_TRACE_REPAIR */
stl_fix_normal_directions(&stl);
assert(stl_validate(&this->stl));
// normal_values
#ifdef SLIC3R_TRACE_REPAIR
BOOST_LOG_TRIVIAL(trace) << "\tstl_fix_normal_values";
#endif /* SLIC3R_TRACE_REPAIR */
stl_fix_normal_values(&stl);
assert(stl_validate(&this->stl));
// always calculate the volume and reverse all normals if volume is negative
#ifdef SLIC3R_TRACE_REPAIR
BOOST_LOG_TRIVIAL(trace) << "\tstl_calculate_volume";
#endif /* SLIC3R_TRACE_REPAIR */
stl_calculate_volume(&stl);
assert(stl_validate(&this->stl));
// neighbors
#ifdef SLIC3R_TRACE_REPAIR
BOOST_LOG_TRIVIAL(trace) << "\tstl_verify_neighbors";
#endif /* SLIC3R_TRACE_REPAIR */
stl_verify_neighbors(&stl);
assert(stl_validate(&this->stl));
this->repaired = true;
BOOST_LOG_TRIVIAL(debug) << "TriangleMesh::repair() finished";
// This call should be quite cheap, a lot of code requires the indexed_triangle_set data structure,
// and it is risky to generate such a structure once the meshes are shared. Do it now.
this->its.clear();
if (update_shared_vertices)
this->require_shared_vertices();
}
float TriangleMesh::volume()
@ -249,20 +238,24 @@ bool TriangleMesh::needed_repair() const
void TriangleMesh::WriteOBJFile(const char* output_file)
{
stl_generate_shared_vertices(&stl);
stl_write_obj(&stl, output_file);
its_write_obj(this->its, output_file);
}
void TriangleMesh::scale(float factor)
{
stl_scale(&(this->stl), factor);
stl_invalidate_shared_vertices(&this->stl);
for (stl_vertex& v : this->its.vertices)
v *= factor;
}
void TriangleMesh::scale(const Vec3d &versor)
{
stl_scale_versor(&this->stl, versor.cast<float>());
stl_invalidate_shared_vertices(&this->stl);
for (stl_vertex& v : this->its.vertices) {
v.x() *= versor.x();
v.y() *= versor.y();
v.z() *= versor.z();
}
}
void TriangleMesh::translate(float x, float y, float z)
@ -270,7 +263,9 @@ void TriangleMesh::translate(float x, float y, float z)
if (x == 0.f && y == 0.f && z == 0.f)
return;
stl_translate_relative(&(this->stl), x, y, z);
stl_invalidate_shared_vertices(&this->stl);
stl_vertex shift(x, y, z);
for (stl_vertex& v : this->its.vertices)
v += shift;
}
void TriangleMesh::translate(const Vec3f &displacement)
@ -287,13 +282,15 @@ void TriangleMesh::rotate(float angle, const Axis &axis)
angle = Slic3r::Geometry::rad2deg(angle);
if (axis == X) {
stl_rotate_x(&(this->stl), angle);
stl_rotate_x(&this->stl, angle);
its_rotate_x(this->its, angle);
} else if (axis == Y) {
stl_rotate_y(&(this->stl), angle);
stl_rotate_y(&this->stl, angle);
its_rotate_y(this->its, angle);
} else if (axis == Z) {
stl_rotate_z(&(this->stl), angle);
stl_rotate_z(&this->stl, angle);
its_rotate_z(this->its, angle);
}
stl_invalidate_shared_vertices(&this->stl);
}
void TriangleMesh::rotate(float angle, const Vec3d& axis)
@ -305,39 +302,49 @@ void TriangleMesh::rotate(float angle, const Vec3d& axis)
Transform3d m = Transform3d::Identity();
m.rotate(Eigen::AngleAxisd(angle, axis_norm));
stl_transform(&stl, m);
its_transform(its, m);
}
void TriangleMesh::mirror(const Axis &axis)
{
if (axis == X) {
stl_mirror_yz(&this->stl);
for (stl_vertex &v : this->its.vertices)
v(0) *= -1.0;
} else if (axis == Y) {
stl_mirror_xz(&this->stl);
for (stl_vertex &v : this->its.vertices)
v(1) *= -1.0;
} else if (axis == Z) {
stl_mirror_xy(&this->stl);
for (stl_vertex &v : this->its.vertices)
v(2) *= -1.0;
}
stl_invalidate_shared_vertices(&this->stl);
}
void TriangleMesh::transform(const Transform3d& t, bool fix_left_handed)
{
stl_transform(&stl, t);
stl_invalidate_shared_vertices(&stl);
its_transform(its, t);
if (fix_left_handed && t.matrix().block(0, 0, 3, 3).determinant() < 0.) {
// Left handed transformation is being applied. It is a good idea to flip the faces and their normals.
this->repair();
this->repair(false);
stl_reverse_all_facets(&stl);
this->its.clear();
this->require_shared_vertices();
}
}
void TriangleMesh::transform(const Matrix3d& m, bool fix_left_handed)
{
stl_transform(&stl, m);
stl_invalidate_shared_vertices(&stl);
its_transform(its, m);
if (fix_left_handed && m.determinant() < 0.) {
// Left handed transformation is being applied. It is a good idea to flip the faces and their normals.
this->repair();
this->repair(false);
stl_reverse_all_facets(&stl);
this->its.clear();
this->require_shared_vertices();
}
}
@ -355,7 +362,8 @@ void TriangleMesh::rotate(double angle, Point* center)
return;
Vec2f c = center->cast<float>();
this->translate(-c(0), -c(1), 0);
stl_rotate_z(&(this->stl), (float)angle);
stl_rotate_z(&this->stl, (float)angle);
its_rotate_z(this->its, (float)angle);
this->translate(c(0), c(1), 0);
}
@ -435,9 +443,8 @@ TriangleMeshPtrs TriangleMesh::split() const
TriangleMesh* mesh = new TriangleMesh;
meshes.emplace_back(mesh);
mesh->stl.stats.type = inmemory;
mesh->stl.stats.number_of_facets = facets.size();
mesh->stl.stats.number_of_facets = (uint32_t)facets.size();
mesh->stl.stats.original_num_facets = mesh->stl.stats.number_of_facets;
stl_clear_error(&mesh->stl);
stl_allocate(&mesh->stl);
// Assign the facets to the new mesh.
@ -455,7 +462,7 @@ void TriangleMesh::merge(const TriangleMesh &mesh)
{
// reset stats and metadata
int number_of_facets = this->stl.stats.number_of_facets;
stl_invalidate_shared_vertices(&this->stl);
this->its.clear();
this->repaired = false;
// update facet count and allocate more memory
@ -477,13 +484,12 @@ ExPolygons TriangleMesh::horizontal_projection() const
{
Polygons pp;
pp.reserve(this->stl.stats.number_of_facets);
for (uint32_t i = 0; i < this->stl.stats.number_of_facets; ++ i) {
stl_facet* facet = &this->stl.facet_start[i];
for (const stl_facet &facet : this->stl.facet_start) {
Polygon p;
p.points.resize(3);
p.points[0] = Point::new_scale(facet->vertex[0](0), facet->vertex[0](1));
p.points[1] = Point::new_scale(facet->vertex[1](0), facet->vertex[1](1));
p.points[2] = Point::new_scale(facet->vertex[2](0), facet->vertex[2](1));
p.points[0] = Point::new_scale(facet.vertex[0](0), facet.vertex[0](1));
p.points[1] = Point::new_scale(facet.vertex[1](0), facet.vertex[1](1));
p.points[2] = Point::new_scale(facet.vertex[2](0), facet.vertex[2](1));
p.make_counter_clockwise(); // do this after scaling, as winding order might change while doing that
pp.emplace_back(p);
}
@ -495,11 +501,10 @@ ExPolygons TriangleMesh::horizontal_projection() const
// 2D convex hull of a 3D mesh projected into the Z=0 plane.
Polygon TriangleMesh::convex_hull()
{
this->require_shared_vertices();
Points pp;
pp.reserve(this->stl.stats.shared_vertices);
for (int i = 0; i < this->stl.stats.shared_vertices; ++ i) {
const stl_vertex &v = this->stl.v_shared[i];
pp.reserve(this->its.vertices.size());
for (size_t i = 0; i < this->its.vertices.size(); ++ i) {
const stl_vertex &v = this->its.vertices[i];
pp.emplace_back(Point::new_scale(v(0), v(1)));
}
return Slic3r::Geometry::convex_hull(pp);
@ -517,49 +522,47 @@ BoundingBoxf3 TriangleMesh::bounding_box() const
BoundingBoxf3 TriangleMesh::transformed_bounding_box(const Transform3d &trafo) const
{
BoundingBoxf3 bbox;
if (stl.v_shared == nullptr) {
if (this->its.vertices.empty()) {
// Using the STL faces.
for (size_t i = 0; i < this->facets_count(); ++ i) {
const stl_facet &facet = this->stl.facet_start[i];
for (const stl_facet &facet : this->stl.facet_start)
for (size_t j = 0; j < 3; ++ j)
bbox.merge(trafo * facet.vertex[j].cast<double>());
}
} else {
// Using the shared vertices should be a bit quicker than using the STL faces.
for (int i = 0; i < stl.stats.shared_vertices; ++ i)
bbox.merge(trafo * this->stl.v_shared[i].cast<double>());
for (const stl_vertex &v : this->its.vertices)
bbox.merge(trafo * v.cast<double>());
}
return bbox;
}
TriangleMesh TriangleMesh::convex_hull_3d() const
{
// Helper struct for qhull:
struct PointForQHull{
PointForQHull(float x_p, float y_p, float z_p) : x((realT)x_p), y((realT)y_p), z((realT)z_p) {}
realT x, y, z;
};
std::vector<PointForQHull> src_vertices;
// We will now fill the vector with input points for computation:
stl_facet* facet_ptr = stl.facet_start;
while (facet_ptr < stl.facet_start + stl.stats.number_of_facets)
{
for (int i = 0; i < 3; ++i)
{
const stl_vertex& v = facet_ptr->vertex[i];
src_vertices.emplace_back(v(0), v(1), v(2));
}
facet_ptr += 1;
}
// The qhull call:
orgQhull::Qhull qhull;
qhull.disableOutputStream(); // we want qhull to be quiet
try
std::vector<realT> src_vertices;
try
{
qhull.runQhull("", 3, (int)src_vertices.size(), (const realT*)(src_vertices.data()), "Qt");
if (this->has_shared_vertices()) {
#if REALfloat
qhull.runQhull("", 3, (int)this->its.vertices.size(), (const realT*)(this->its.vertices.front().data()), "Qt");
#else
src_vertices.reserve(this->its.vertices() * 3);
// We will now fill the vector with input points for computation:
for (const stl_vertex &v : ths->its.vertices.size())
for (int i = 0; i < 3; ++ i)
src_vertices.emplace_back(v(i));
qhull.runQhull("", 3, (int)src_vertices.size() / 3, src_vertices.data(), "Qt");
#endif
} else {
src_vertices.reserve(this->stl.facet_start.size() * 9);
// We will now fill the vector with input points for computation:
for (const stl_facet &f : this->stl.facet_start)
for (int i = 0; i < 3; ++ i)
for (int j = 0; j < 3; ++ j)
src_vertices.emplace_back(f.vertex[i](j));
qhull.runQhull("", 3, (int)src_vertices.size() / 3, src_vertices.data(), "Qt");
}
}
catch (...)
{
@ -587,34 +590,20 @@ TriangleMesh TriangleMesh::convex_hull_3d() const
TriangleMesh output_mesh(dst_vertices, facets);
output_mesh.repair();
output_mesh.require_shared_vertices();
return output_mesh;
}
void TriangleMesh::require_shared_vertices()
{
BOOST_LOG_TRIVIAL(trace) << "TriangleMeshSlicer::require_shared_vertices - start";
if (!this->repaired)
assert(stl_validate(&this->stl));
if (! this->repaired)
this->repair();
if (this->stl.v_shared == NULL) {
if (this->its.vertices.empty()) {
BOOST_LOG_TRIVIAL(trace) << "TriangleMeshSlicer::require_shared_vertices - stl_generate_shared_vertices";
stl_generate_shared_vertices(&(this->stl));
stl_generate_shared_vertices(&this->stl, this->its);
}
#ifdef _DEBUG
// Verify validity of neighborship data.
for (int facet_idx = 0; facet_idx < stl.stats.number_of_facets; ++facet_idx) {
const stl_neighbors &nbr = stl.neighbors_start[facet_idx];
const int *vertices = stl.v_indices[facet_idx].vertex;
for (int nbr_idx = 0; nbr_idx < 3; ++nbr_idx) {
int nbr_face = this->stl.neighbors_start[facet_idx].neighbor[nbr_idx];
if (nbr_face != -1) {
assert(
(stl.v_indices[nbr_face].vertex[(nbr.which_vertex_not[nbr_idx] + 1) % 3] == vertices[(nbr_idx + 1) % 3] && stl.v_indices[nbr_face].vertex[(nbr.which_vertex_not[nbr_idx] + 2) % 3] == vertices[nbr_idx]) ||
(stl.v_indices[nbr_face].vertex[(nbr.which_vertex_not[nbr_idx] + 2) % 3] == vertices[(nbr_idx + 1) % 3] && stl.v_indices[nbr_face].vertex[(nbr.which_vertex_not[nbr_idx] + 1) % 3] == vertices[nbr_idx]));
}
}
}
#endif /* _DEBUG */
assert(stl_validate(&this->stl, this->its));
BOOST_LOG_TRIVIAL(trace) << "TriangleMeshSlicer::require_shared_vertices - end";
}
@ -626,10 +615,9 @@ void TriangleMeshSlicer::init(const TriangleMesh *_mesh, throw_on_cancel_callbac
throw_on_cancel();
facets_edges.assign(_mesh->stl.stats.number_of_facets * 3, -1);
v_scaled_shared.assign(_mesh->stl.v_shared, _mesh->stl.v_shared + _mesh->stl.stats.shared_vertices);
// Scale the copied vertices.
for (int i = 0; i < this->mesh->stl.stats.shared_vertices; ++ i)
this->v_scaled_shared[i] *= float(1. / SCALING_FACTOR);
v_scaled_shared.assign(_mesh->its.vertices.size(), stl_vertex());
for (size_t i = 0; i < v_scaled_shared.size(); ++ i)
this->v_scaled_shared[i] = _mesh->its.vertices[i] / float(SCALING_FACTOR);
// Create a mapping from triangle edge into face.
struct EdgeToFace {
@ -649,8 +637,8 @@ void TriangleMeshSlicer::init(const TriangleMesh *_mesh, throw_on_cancel_callbac
for (uint32_t facet_idx = 0; facet_idx < this->mesh->stl.stats.number_of_facets; ++ facet_idx)
for (int i = 0; i < 3; ++ i) {
EdgeToFace &e2f = edges_map[facet_idx*3+i];
e2f.vertex_low = this->mesh->stl.v_indices[facet_idx].vertex[i];
e2f.vertex_high = this->mesh->stl.v_indices[facet_idx].vertex[(i + 1) % 3];
e2f.vertex_low = this->mesh->its.indices[facet_idx][i];
e2f.vertex_high = this->mesh->its.indices[facet_idx][(i + 1) % 3];
e2f.face = facet_idx;
// 1 based indexing, to be always strictly positive.
e2f.face_edge = i + 1;
@ -818,7 +806,7 @@ void TriangleMeshSlicer::slice(const std::vector<float> &z, std::vector<Polygons
void TriangleMeshSlicer::_slice_do(size_t facet_idx, std::vector<IntersectionLines>* lines, boost::mutex* lines_mutex,
const std::vector<float> &z) const
{
const stl_facet &facet = m_use_quaternion ? this->mesh->stl.facet_start[facet_idx].rotated(m_quaternion) : this->mesh->stl.facet_start[facet_idx];
const stl_facet &facet = m_use_quaternion ? (this->mesh->stl.facet_start.data() + facet_idx)->rotated(m_quaternion) : *(this->mesh->stl.facet_start.data() + facet_idx);
// find facet extents
const float min_z = fminf(facet.vertex[0](2), fminf(facet.vertex[1](2), facet.vertex[2](2)));
@ -887,7 +875,7 @@ TriangleMeshSlicer::FacetSliceType TriangleMeshSlicer::slice_facet(
// Reorder vertices so that the first one is the one with lowest Z.
// This is needed to get all intersection lines in a consistent order
// (external on the right of the line)
const int *vertices = this->mesh->stl.v_indices[facet_idx].vertex;
const stl_triangle_vertex_indices &vertices = this->mesh->its.indices[facet_idx];
int i = (facet.vertex[1].z() == min_z) ? 1 : ((facet.vertex[2].z() == min_z) ? 2 : 0);
// These are used only if the cut plane is tilted:
@ -1714,7 +1702,7 @@ void TriangleMeshSlicer::cut(float z, TriangleMesh* upper, TriangleMesh* lower)
BOOST_LOG_TRIVIAL(trace) << "TriangleMeshSlicer::cut - slicing object";
float scaled_z = scale_(z);
for (uint32_t facet_idx = 0; facet_idx < this->mesh->stl.stats.number_of_facets; ++ facet_idx) {
stl_facet* facet = &this->mesh->stl.facet_start[facet_idx];
const stl_facet* facet = &this->mesh->stl.facet_start[facet_idx];
// find facet extents
float min_z = std::min(facet->vertex[0](2), std::min(facet->vertex[1](2), facet->vertex[2](2)));
@ -1736,10 +1724,12 @@ void TriangleMeshSlicer::cut(float z, TriangleMesh* upper, TriangleMesh* lower)
if (min_z > z || (min_z == z && max_z > z)) {
// facet is above the cut plane and does not belong to it
if (upper != NULL) stl_add_facet(&upper->stl, facet);
if (upper != nullptr)
stl_add_facet(&upper->stl, facet);
} else if (max_z < z || (max_z == z && min_z < z)) {
// facet is below the cut plane and does not belong to it
if (lower != NULL) stl_add_facet(&lower->stl, facet);
if (lower != nullptr)
stl_add_facet(&lower->stl, facet);
} else if (min_z < z && max_z > z) {
// Facet is cut by the slicing plane.
@ -1786,22 +1776,24 @@ void TriangleMeshSlicer::cut(float z, TriangleMesh* upper, TriangleMesh* lower)
quadrilateral[1].vertex[2] = v0v1;
if (v0(2) > z) {
if (upper != NULL) stl_add_facet(&upper->stl, &triangle);
if (lower != NULL) {
if (upper != nullptr)
stl_add_facet(&upper->stl, &triangle);
if (lower != nullptr) {
stl_add_facet(&lower->stl, &quadrilateral[0]);
stl_add_facet(&lower->stl, &quadrilateral[1]);
}
} else {
if (upper != NULL) {
if (upper != nullptr) {
stl_add_facet(&upper->stl, &quadrilateral[0]);
stl_add_facet(&upper->stl, &quadrilateral[1]);
}
if (lower != NULL) stl_add_facet(&lower->stl, &triangle);
if (lower != nullptr)
stl_add_facet(&lower->stl, &triangle);
}
}
}
if (upper != NULL) {
if (upper != nullptr) {
BOOST_LOG_TRIVIAL(trace) << "TriangleMeshSlicer::cut - triangulating upper part";
ExPolygons section;
this->make_expolygons_simple(upper_lines, &section);
@ -1815,7 +1807,7 @@ void TriangleMeshSlicer::cut(float z, TriangleMesh* upper, TriangleMesh* lower)
}
}
if (lower != NULL) {
if (lower != nullptr) {
BOOST_LOG_TRIVIAL(trace) << "TriangleMeshSlicer::cut - triangulating lower part";
ExPolygons section;
this->make_expolygons_simple(lower_lines, &section);
@ -1905,10 +1897,10 @@ TriangleMesh make_cylinder(double r, double h, double fa)
//FIXME better to discretize an Icosahedron recursively http://www.songho.ca/opengl/gl_sphere.html
TriangleMesh make_sphere(double radius, double fa)
{
int sectorCount = ceil(2. * M_PI / fa);
int stackCount = ceil(M_PI / fa);
float sectorStep = 2. * M_PI / sectorCount;
float stackStep = M_PI / stackCount;
int sectorCount = int(ceil(2. * M_PI / fa));
int stackCount = int(ceil(M_PI / fa));
float sectorStep = float(2. * M_PI / sectorCount);
float stackStep = float(M_PI / stackCount);
Pointf3s vertices;
vertices.reserve((stackCount - 1) * sectorCount + 2);

23
src/libslic3r/TriangleMesh.hpp
View file

@ -21,19 +21,13 @@ typedef std::vector<TriangleMesh*> TriangleMeshPtrs;
class TriangleMesh
{
public:
TriangleMesh() : repaired(false) { stl_initialize(&this->stl); }
TriangleMesh() : repaired(false) {}
TriangleMesh(const Pointf3s &points, const std::vector<Vec3crd> &facets);
TriangleMesh(const TriangleMesh &other) : repaired(false) { stl_initialize(&this->stl); *this = other; }
TriangleMesh(TriangleMesh &&other) : repaired(false) { stl_initialize(&this->stl); this->swap(other); }
~TriangleMesh() { clear(); }
TriangleMesh& operator=(const TriangleMesh &other);
TriangleMesh& operator=(TriangleMesh &&other) { this->swap(other); return *this; }
void clear() { stl_close(&this->stl); this->repaired = false; }
void swap(TriangleMesh &other) { std::swap(this->stl, other.stl); std::swap(this->repaired, other.repaired); }
void ReadSTLFile(const char* input_file) { stl_open(&stl, input_file); }
void write_ascii(const char* output_file) { stl_write_ascii(&this->stl, output_file, ""); }
void write_binary(const char* output_file) { stl_write_binary(&this->stl, output_file, ""); }
void repair();
void clear() { this->stl.clear(); this->its.clear(); this->repaired = false; }
bool ReadSTLFile(const char* input_file) { return stl_open(&stl, input_file); }
bool write_ascii(const char* output_file) { return stl_write_ascii(&this->stl, output_file, ""); }
bool write_binary(const char* output_file) { return stl_write_binary(&this->stl, output_file, ""); }
void repair(bool update_shared_vertices = true);
float volume();
void check_topology();
bool is_manifold() const { return this->stl.stats.connected_facets_3_edge == (int)this->stl.stats.number_of_facets; }
@ -58,7 +52,7 @@ public:
TriangleMeshPtrs split() const;
void merge(const TriangleMesh &mesh);
ExPolygons horizontal_projection() const;
const float* first_vertex() const { return this->stl.facet_start ? &this->stl.facet_start->vertex[0](0) : nullptr; }
const float* first_vertex() const { return this->stl.facet_start.empty() ? nullptr : &this->stl.facet_start.front().vertex[0](0); }
// 2D convex hull of a 3D mesh projected into the Z=0 plane.
Polygon convex_hull();
BoundingBoxf3 bounding_box() const;
@ -69,12 +63,13 @@ public:
void reset_repair_stats();
bool needed_repair() const;
void require_shared_vertices();
bool has_shared_vertices() const { return stl.v_shared != NULL; }
bool has_shared_vertices() const { return ! this->its.vertices.empty(); }
size_t facets_count() const { return this->stl.stats.number_of_facets; }
bool empty() const { return this->facets_count() == 0; }
bool is_splittable() const;
stl_file stl;
indexed_triangle_set its;
bool repaired;
private:

5
src/slic3r/Config/Version.cpp
View file

@ -198,6 +198,11 @@ size_t Index::load(const boost::filesystem::path &path)
size_t idx_line = 0;
Version ver;
while (std::getline(ifs, line)) {
#ifndef _MSVCVER
// On a Unix system, getline does not remove the trailing carriage returns, if the index is shared over a Windows filesystem. Remove them manually.
while (! line.empty() && line.back() == '\r')
line.pop_back();
#endif
++ idx_line;
// Skip the initial white spaces.
char *key = left_trim(const_cast<char*>(line.data()));

25
src/slic3r/GUI/3DScene.cpp
View file

@ -241,8 +241,6 @@ GLVolume::GLVolume(float r, float g, float b, float a)
: m_transformed_bounding_box_dirty(true)
, m_sla_shift_z(0.0)
, m_transformed_convex_hull_bounding_box_dirty(true)
, m_convex_hull(nullptr)
, m_convex_hull_owned(false)
// geometry_id == 0 -> invalid
, geometry_id(std::pair<size_t, size_t>(0, 0))
, extruder_id(0)
@ -268,12 +266,6 @@ GLVolume::GLVolume(float r, float g, float b, float a)
set_render_color(r, g, b, a);
}
GLVolume::~GLVolume()
{
if (m_convex_hull_owned)
delete m_convex_hull;
}
void GLVolume::set_render_color(float r, float g, float b, float a)
{
render_color[0] = r;
@ -335,12 +327,6 @@ void GLVolume::set_color_from_model_volume(const ModelVolume *model_volume)
color[3] = model_volume->is_model_part() ? 1.f : 0.5f;
}
void GLVolume::set_convex_hull(const TriangleMesh *convex_hull, bool owned)
{
m_convex_hull = convex_hull;
m_convex_hull_owned = owned;
}
Transform3d GLVolume::world_matrix() const
{
Transform3d m = m_instance_transformation.get_matrix() * m_volume_transformation.get_matrix();
@ -377,7 +363,7 @@ const BoundingBoxf3& GLVolume::transformed_convex_hull_bounding_box() const
BoundingBoxf3 GLVolume::transformed_convex_hull_bounding_box(const Transform3d &trafo) const
{
return (m_convex_hull != nullptr && m_convex_hull->stl.stats.number_of_facets > 0) ?
return (m_convex_hull && m_convex_hull->stl.stats.number_of_facets > 0) ?
m_convex_hull->transformed_bounding_box(trafo) :
bounding_box.transformed(trafo);
}
@ -587,7 +573,7 @@ int GLVolumeCollection::load_object_volume(
const ModelVolume *model_volume = model_object->volumes[volume_idx];
const int extruder_id = model_volume->extruder_id();
const ModelInstance *instance = model_object->instances[instance_idx];
const TriangleMesh& mesh = model_volume->mesh;
const TriangleMesh& mesh = model_volume->mesh();
float color[4];
memcpy(color, GLVolume::MODEL_COLOR[((color_by == "volume") ? volume_idx : obj_idx) % 4], sizeof(float) * 3);
/* if (model_volume->is_support_blocker()) {
@ -613,7 +599,7 @@ int GLVolumeCollection::load_object_volume(
if (model_volume->is_model_part())
{
// GLVolume will reference a convex hull from model_volume!
v.set_convex_hull(&model_volume->get_convex_hull(), false);
v.set_convex_hull(model_volume->get_convex_hull_shared_ptr());
if (extruder_id != -1)
v.extruder_id = extruder_id;
}
@ -656,7 +642,10 @@ void GLVolumeCollection::load_object_auxiliary(
v.composite_id = GLVolume::CompositeID(obj_idx, - int(milestone), (int)instance_idx.first);
v.geometry_id = std::pair<size_t, size_t>(timestamp, model_instance.id().id);
// Create a copy of the convex hull mesh for each instance. Use a move operator on the last instance.
v.set_convex_hull((&instance_idx == &instances.back()) ? new TriangleMesh(std::move(convex_hull)) : new TriangleMesh(convex_hull), true);
if (&instance_idx == &instances.back())
v.set_convex_hull(std::move(convex_hull));
else
v.set_convex_hull(convex_hull);
v.is_modifier = false;
v.shader_outside_printer_detection_enabled = (milestone == slaposSupportTree);
v.set_instance_transformation(model_instance.get_transformation());

12
src/slic3r/GUI/3DScene.hpp
View file

@ -10,6 +10,7 @@
#include "slic3r/GUI/GLCanvas3DManager.hpp"
#include <functional>
#include <memory>
#ifndef NDEBUG
#define HAS_GLSAFE
@ -243,7 +244,6 @@ public:
GLVolume(float r = 1.f, float g = 1.f, float b = 1.f, float a = 1.f);
GLVolume(const float *rgba) : GLVolume(rgba[0], rgba[1], rgba[2], rgba[3]) {}
~GLVolume();
private:
Geometry::Transformation m_instance_transformation;
@ -255,10 +255,8 @@ private:
mutable BoundingBoxf3 m_transformed_bounding_box;
// Whether or not is needed to recalculate the transformed bounding box.
mutable bool m_transformed_bounding_box_dirty;
// Pointer to convex hull of the original mesh, if any.
// This object may or may not own the convex hull instance based on m_convex_hull_owned
const TriangleMesh* m_convex_hull;
bool m_convex_hull_owned;
// Convex hull of the volume, if any.
std::shared_ptr<const TriangleMesh> m_convex_hull;
// Bounding box of this volume, in unscaled coordinates.
mutable BoundingBoxf3 m_transformed_convex_hull_bounding_box;
// Whether or not is needed to recalculate the transformed convex hull bounding box.
@ -395,7 +393,9 @@ public:
double get_sla_shift_z() const { return m_sla_shift_z; }
void set_sla_shift_z(double z) { m_sla_shift_z = z; }
void set_convex_hull(const TriangleMesh *convex_hull, bool owned);
void set_convex_hull(std::shared_ptr<const TriangleMesh> convex_hull) { m_convex_hull = std::move(convex_hull); }
void set_convex_hull(const TriangleMesh &convex_hull) { m_convex_hull = std::make_shared<const TriangleMesh>(convex_hull); }
void set_convex_hull(TriangleMesh &&convex_hull) { m_convex_hull = std::make_shared<const TriangleMesh>(std::move(convex_hull)); }
int object_idx() const { return this->composite_id.object_id; }
int volume_idx() const { return this->composite_id.volume_id; }

2
src/slic3r/GUI/BackgroundSlicingProcess.cpp
View file

@ -89,7 +89,7 @@ void BackgroundSlicingProcess::process_fff()
// Perform the final post-processing of the export path by applying the print statistics over the file name.
std::string export_path = m_fff_print->print_statistics().finalize_output_path(m_export_path);
if (copy_file(m_temp_output_path, export_path) != 0)
throw std::runtime_error(_utf8(L("Copying of the temporary G-code to the output G-code failed")));
throw std::runtime_error(_utf8(L("Copying of the temporary G-code to the output G-code failed. Maybe the SD card is write locked?")));
m_print->set_status(95, _utf8(L("Running post-processing scripts")));
run_post_process_scripts(export_path, m_fff_print->config());
m_print->set_status(100, (boost::format(_utf8(L("G-code file exported to %1%"))) % export_path).str());

2
src/slic3r/GUI/GLCanvas3D.cpp
View file

@ -5502,7 +5502,7 @@ void GLCanvas3D::_load_sla_shells()
v.set_instance_offset(unscale(instance.shift(0), instance.shift(1), 0));
v.set_instance_rotation(Vec3d(0.0, 0.0, (double)instance.rotation));
v.set_instance_mirror(X, object.is_left_handed() ? -1. : 1.);
v.set_convex_hull(new TriangleMesh(std::move(mesh.convex_hull_3d())), true);
v.set_convex_hull(mesh.convex_hull_3d());
};
// adds objects' volumes

4
src/slic3r/GUI/GUI_ObjectList.cpp
View file

@ -261,7 +261,7 @@ wxString ObjectList::get_mesh_errors_list(const int obj_idx, const int vol_idx /
const stl_stats& stats = vol_idx == -1 ?
(*m_objects)[obj_idx]->get_object_stl_stats() :
(*m_objects)[obj_idx]->volumes[vol_idx]->mesh.stl.stats;
(*m_objects)[obj_idx]->volumes[vol_idx]->mesh().stl.stats;
std::map<std::string, int> error_msg = {
{ L("degenerate facets"), stats.degenerate_facets },
@ -1592,7 +1592,7 @@ void ObjectList::load_generic_subobject(const std::string& type_name, const Mode
// First (any) GLVolume of the selected instance. They all share the same instance matrix.
const GLVolume* v = selection.get_volume(*selection.get_volume_idxs().begin());
// Transform the new modifier to be aligned with the print bed.
const BoundingBoxf3 mesh_bb = new_volume->mesh.bounding_box();
const BoundingBoxf3 mesh_bb = new_volume->mesh().bounding_box();
new_volume->set_transformation(volume_to_bed_transformation(v->get_instance_transformation(), mesh_bb));
// Set the modifier position.
auto offset = (type_name == "Slab") ?

64
src/slic3r/GUI/Gizmos/GLGizmoSlaSupports.cpp
View file

@ -27,6 +27,7 @@ GLGizmoSlaSupports::GLGizmoSlaSupports(GLCanvas3D& parent, unsigned int sprite_i
: GLGizmoBase(parent, sprite_id)
#endif // ENABLE_SVG_ICONS
, m_quadric(nullptr)
, m_its(nullptr)
{
m_quadric = ::gluNewQuadric();
if (m_quadric != nullptr)
@ -379,36 +380,23 @@ bool GLGizmoSlaSupports::is_point_clipped(const Vec3d& point) const
bool GLGizmoSlaSupports::is_mesh_update_necessary() const
{
return ((m_state == On) && (m_model_object != nullptr) && !m_model_object->instances.empty())
&& ((m_model_object->id() != m_current_mesh_model_id) || m_V.size()==0);
&& ((m_model_object->id() != m_current_mesh_model_id) || m_its == nullptr);
}
void GLGizmoSlaSupports::update_mesh()
{
wxBusyCursor wait;
Eigen::MatrixXf& V = m_V;
Eigen::MatrixXi& F = m_F;
// We rely on SLA model object having a single volume,
// this way we can use that mesh directly.
// This mesh does not account for the possible Z up SLA offset.
m_mesh = &m_model_object->volumes.front()->mesh;
const_cast<TriangleMesh*>(m_mesh)->require_shared_vertices(); // TriangleMeshSlicer needs this
const stl_file& stl = m_mesh->stl;
V.resize(3 * stl.stats.number_of_facets, 3);
F.resize(stl.stats.number_of_facets, 3);
for (unsigned int i=0; i<stl.stats.number_of_facets; ++i) {
const stl_facet* facet = stl.facet_start+i;
V(3*i+0, 0) = facet->vertex[0](0); V(3*i+0, 1) = facet->vertex[0](1); V(3*i+0, 2) = facet->vertex[0](2);
V(3*i+1, 0) = facet->vertex[1](0); V(3*i+1, 1) = facet->vertex[1](1); V(3*i+1, 2) = facet->vertex[1](2);
V(3*i+2, 0) = facet->vertex[2](0); V(3*i+2, 1) = facet->vertex[2](1); V(3*i+2, 2) = facet->vertex[2](2);
F(i, 0) = 3*i+0;
F(i, 1) = 3*i+1;
F(i, 2) = 3*i+2;
}
m_mesh = &m_model_object->volumes.front()->mesh();
m_its = &m_mesh->its;
m_current_mesh_model_id = m_model_object->id();
m_editing_mode = false;
m_AABB = igl::AABB<Eigen::MatrixXf,3>();
m_AABB.init(m_V, m_F);
m_AABB.deinit();
m_AABB.init(
MapMatrixXfUnaligned(m_its->vertices.front().data(), m_its->vertices.size(), 3),
MapMatrixXiUnaligned(m_its->indices.front().data(), m_its->indices.size(), 3));
}
// Unprojects the mouse position on the mesh and return the hit point and normal of the facet.
@ -416,7 +404,7 @@ void GLGizmoSlaSupports::update_mesh()
std::pair<Vec3f, Vec3f> GLGizmoSlaSupports::unproject_on_mesh(const Vec2d& mouse_pos)
{
// if the gizmo doesn't have the V, F structures for igl, calculate them first:
if (m_V.size() == 0)
if (m_its == nullptr)
update_mesh();
const Camera& camera = m_parent.get_camera();
@ -442,7 +430,10 @@ std::pair<Vec3f, Vec3f> GLGizmoSlaSupports::unproject_on_mesh(const Vec2d& mouse
point1 = inv * point1;
point2 = inv * point2;
if (!m_AABB.intersect_ray(m_V, m_F, point1.cast<float>(), (point2-point1).cast<float>(), hits))
if (!m_AABB.intersect_ray(
MapMatrixXfUnaligned(m_its->vertices.front().data(), m_its->vertices.size(), 3),
MapMatrixXiUnaligned(m_its->indices.front().data(), m_its->indices.size(), 3),
point1.cast<float>(), (point2-point1).cast<float>(), hits))
throw std::invalid_argument("unproject_on_mesh(): No intersection found.");
std::sort(hits.begin(), hits.end(), [](const igl::Hit& a, const igl::Hit& b) { return a.t < b.t; });
@ -457,9 +448,9 @@ std::pair<Vec3f, Vec3f> GLGizmoSlaSupports::unproject_on_mesh(const Vec2d& mouse
igl::Hit& hit = hits[i];
int fid = hit.id; // facet id
bc = Vec3f(1-hit.u-hit.v, hit.u, hit.v); // barycentric coordinates of the hit
a = (m_V.row(m_F(fid, 1)) - m_V.row(m_F(fid, 0)));
b = (m_V.row(m_F(fid, 2)) - m_V.row(m_F(fid, 0)));
result = bc(0) * m_V.row(m_F(fid, 0)) + bc(1) * m_V.row(m_F(fid, 1)) + bc(2)*m_V.row(m_F(fid, 2));
a = (m_its->vertices[m_its->indices[fid](1)] - m_its->vertices[m_its->indices[fid](0)]);
b = (m_its->vertices[m_its->indices[fid](2)] - m_its->vertices[m_its->indices[fid](0)]);
result = bc(0) * m_its->vertices[m_its->indices[fid](0)] + bc(1) * m_its->vertices[m_its->indices[fid](1)] + bc(2)*m_its->vertices[m_its->indices[fid](2)];
if (m_clipping_plane_distance == 0.f || !is_point_clipped(result.cast<double>()))
break;
}
@ -564,15 +555,18 @@ bool GLGizmoSlaSupports::gizmo_event(SLAGizmoEventType action, const Vec2d& mous
// Cast a ray in the direction of the camera and look for intersection with the mesh:
std::vector<igl::Hit> hits;
// Offset the start of the ray to the front of the ball + EPSILON to account for numerical inaccuracies.
if (m_AABB.intersect_ray(m_V, m_F, support_point.pos + direction_to_camera_mesh * (support_point.head_front_radius + EPSILON), direction_to_camera_mesh, hits)) {
if (m_AABB.intersect_ray(
MapMatrixXfUnaligned(m_its->vertices.front().data(), m_its->vertices.size(), 3),
MapMatrixXiUnaligned(m_its->indices.front().data(), m_its->indices.size(), 3),
support_point.pos + direction_to_camera_mesh * (support_point.head_front_radius + EPSILON), direction_to_camera_mesh, hits)) {
std::sort(hits.begin(), hits.end(), [](const igl::Hit& h1, const igl::Hit& h2) { return h1.t < h2.t; });
if (m_clipping_plane_distance != 0.f) {
// If the closest hit facet normal points in the same direction as the ray,
// we are looking through the mesh and should therefore discard the point:
int fid = hits.front().id; // facet id
Vec3f a = (m_V.row(m_F(fid, 1)) - m_V.row(m_F(fid, 0)));
Vec3f b = (m_V.row(m_F(fid, 2)) - m_V.row(m_F(fid, 0)));
Vec3f a = (m_its->vertices[m_its->indices[fid](1)] - m_its->vertices[m_its->indices[fid](0)]);
Vec3f b = (m_its->vertices[m_its->indices[fid](2)] - m_its->vertices[m_its->indices[fid](0)]);
if ((a.cross(b)).dot(direction_to_camera_mesh) > 0.f)
is_obscured = true;
@ -582,7 +576,7 @@ bool GLGizmoSlaSupports::gizmo_event(SLAGizmoEventType action, const Vec2d& mous
int fid = hit.id; // facet id
Vec3f bc = Vec3f(1-hit.u-hit.v, hit.u, hit.v); // barycentric coordinates of the hit
Vec3f hit_pos = bc(0) * m_V.row(m_F(fid, 0)) + bc(1) * m_V.row(m_F(fid, 1)) + bc(2)*m_V.row(m_F(fid, 2));
Vec3f hit_pos = bc(0) * m_its->vertices[m_its->indices[fid](0)] + bc(1) * m_its->vertices[m_its->indices[fid](1)] + bc(2)*m_its->vertices[m_its->indices[fid](2)];
if (is_point_clipped(hit_pos.cast<double>())) {
hits.erase(hits.begin()+j);
--j;
@ -759,9 +753,12 @@ void GLGizmoSlaSupports::update_cache_entry_normal(unsigned int i) const
int idx = 0;
Eigen::Matrix<float, 1, 3> pp = m_editing_mode_cache[i].support_point.pos;
Eigen::Matrix<float, 1, 3> cc;
m_AABB.squared_distance(m_V, m_F, pp, idx, cc);
Vec3f a = (m_V.row(m_F(idx, 1)) - m_V.row(m_F(idx, 0)));
Vec3f b = (m_V.row(m_F(idx, 2)) - m_V.row(m_F(idx, 0)));
m_AABB.squared_distance(
MapMatrixXfUnaligned(m_its->vertices.front().data(), m_its->vertices.size(), 3),
MapMatrixXiUnaligned(m_its->indices.front().data(), m_its->indices.size(), 3),
pp, idx, cc);
Vec3f a = (m_its->vertices[m_its->indices[idx](1)] - m_its->vertices[m_its->indices[idx](0)]);
Vec3f b = (m_its->vertices[m_its->indices[idx](2)] - m_its->vertices[m_its->indices[idx](0)]);
m_editing_mode_cache[i].normal = a.cross(b);
}
@ -1067,8 +1064,7 @@ void GLGizmoSlaSupports::on_set_state()
m_clipping_plane_distance = 0.f;
// Release triangle mesh slicer and the AABB spatial search structure.
m_AABB.deinit();
m_V = Eigen::MatrixXf();
m_F = Eigen::MatrixXi();
m_its = nullptr;
m_tms.reset();
m_supports_tms.reset();
});

7
src/slic3r/GUI/Gizmos/GLGizmoSlaSupports.hpp
View file

@ -35,10 +35,11 @@ private:
const float RenderPointScale = 1.f;
GLUquadricObj* m_quadric;
Eigen::MatrixXf m_V; // vertices
Eigen::MatrixXi m_F; // facets indices
igl::AABB<Eigen::MatrixXf,3> m_AABB;
typedef Eigen::Map<const Eigen::Matrix<float, Eigen::Dynamic, Eigen::Dynamic, Eigen::RowMajor | Eigen::DontAlign>> MapMatrixXfUnaligned;
typedef Eigen::Map<const Eigen::Matrix<int, Eigen::Dynamic, Eigen::Dynamic, Eigen::RowMajor | Eigen::DontAlign>> MapMatrixXiUnaligned;
igl::AABB<MapMatrixXfUnaligned, 3> m_AABB;
const TriangleMesh* m_mesh;
const indexed_triangle_set* m_its;
mutable const TriangleMesh* m_supports_mesh;
mutable std::vector<Vec2f> m_triangles;
mutable std::vector<Vec2f> m_supports_triangles;

2
src/slic3r/GUI/Plater.cpp
View file

@ -3565,7 +3565,7 @@ void Plater::export_stl(bool extended, bool selection_only)
else
{
const GLVolume* volume = selection.get_volume(*selection.get_volume_idxs().begin());
mesh = model_object->volumes[volume->volume_idx()]->mesh;
mesh = model_object->volumes[volume->volume_idx()]->mesh();
mesh.transform(volume->get_volume_transformation().get_matrix());
mesh.translate(-model_object->origin_translation.cast<float>());
}

6
src/slic3r/GUI/PresetBundle.cpp
View file

@ -781,7 +781,7 @@ void PresetBundle::load_config_file_config(const std::string &name_or_path, bool
if (i == 0)
suffix[0] = 0;
else
sprintf(suffix, "%d", i);
sprintf(suffix, "%d", (int)i);
std::string new_name = name + suffix;
loaded = &this->filaments.load_preset(this->filaments.path_from_name(new_name),
new_name, std::move(cfg), i == 0);
@ -837,7 +837,7 @@ void PresetBundle::load_config_file_config_bundle(const std::string &path, const
return preset_name_dst;
// Try to generate another name.
char buf[64];
sprintf(buf, " (%d)", i);
sprintf(buf, " (%d)", (int)i);
preset_name_dst = preset_name_src + buf + bundle_name;
}
}
@ -1379,7 +1379,7 @@ void PresetBundle::export_configbundle(const std::string &path, bool export_syst
for (size_t i = 0; i < this->filament_presets.size(); ++ i) {
char suffix[64];
if (i > 0)
sprintf(suffix, "_%d", i);
sprintf(suffix, "_%d", (int)i);
else
suffix[0] = 0;
c << "filament" << suffix << " = " << this->filament_presets[i] << std::endl;

4
src/slic3r/Utils/FixModelByWin10.cpp
View file

@ -389,10 +389,10 @@ void fix_model_by_win10_sdk_gui(ModelObject &model_object, int volume_idx)
throw std::runtime_error(L("Repaired 3MF file does not contain any volume"));
if (model.objects.front()->volumes.size() > 1)
throw std::runtime_error(L("Repaired 3MF file contains more than one volume"));
meshes_repaired.emplace_back(std::move(model.objects.front()->volumes.front()->mesh));
meshes_repaired.emplace_back(std::move(model.objects.front()->volumes.front()->mesh()));
}
for (size_t i = 0; i < volumes.size(); ++ i) {
volumes[i]->mesh = std::move(meshes_repaired[i]);
volumes[i]->set_mesh(std::move(meshes_repaired[i]));
volumes[i]->set_new_unique_id();
}
model_object.invalidate_bounding_box();

2
xs/xsp/Model.xsp
View file

@ -253,7 +253,7 @@ ModelMaterial::attributes()
Ref<DynamicPrintConfig> config()
%code%{ RETVAL = &THIS->config; %};
Ref<TriangleMesh> mesh()
%code%{ RETVAL = &THIS->mesh; %};
%code%{ RETVAL = &THIS->mesh(); %};
bool modifier()
%code%{ RETVAL = THIS->is_modifier(); %};

25
xs/xsp/TriangleMesh.xsp
View file

@ -46,7 +46,6 @@ TriangleMesh::ReadFromPerl(vertices, facets)
SV* facets
CODE:
stl_file &stl = THIS->stl;
stl.error = 0;
stl.stats.type = inmemory;
// count facets and allocate memory
@ -99,20 +98,18 @@ SV*
TriangleMesh::vertices()
CODE:
if (!THIS->repaired) CONFESS("vertices() requires repair()");
if (THIS->stl.v_shared == NULL)
stl_generate_shared_vertices(&(THIS->stl));
THIS->require_shared_vertices();
// vertices
AV* vertices = newAV();
av_extend(vertices, THIS->stl.stats.shared_vertices);
for (int i = 0; i < THIS->stl.stats.shared_vertices; i++) {
av_extend(vertices, THIS->its.vertices.size());
for (size_t i = 0; i < THIS->its.vertices.size(); i++) {
AV* vertex = newAV();
av_store(vertices, i, newRV_noinc((SV*)vertex));
av_extend(vertex, 2);
av_store(vertex, 0, newSVnv(THIS->stl.v_shared[i](0)));
av_store(vertex, 1, newSVnv(THIS->stl.v_shared[i](1)));
av_store(vertex, 2, newSVnv(THIS->stl.v_shared[i](2)));
av_store(vertex, 0, newSVnv(THIS->its.vertices[i](0)));
av_store(vertex, 1, newSVnv(THIS->its.vertices[i](1)));
av_store(vertex, 2, newSVnv(THIS->its.vertices[i](2)));
}
RETVAL = newRV_noinc((SV*)vertices);
@ -123,9 +120,7 @@ SV*
TriangleMesh::facets()
CODE:
if (!THIS->repaired) CONFESS("facets() requires repair()");
if (THIS->stl.v_shared == NULL)
stl_generate_shared_vertices(&(THIS->stl));
THIS->require_shared_vertices();
// facets
AV* facets = newAV();
@ -134,9 +129,9 @@ TriangleMesh::facets()
AV* facet = newAV();
av_store(facets, i, newRV_noinc((SV*)facet));
av_extend(facet, 2);
av_store(facet, 0, newSVnv(THIS->stl.v_indices[i].vertex[0]));
av_store(facet, 1, newSVnv(THIS->stl.v_indices[i].vertex[1]));
av_store(facet, 2, newSVnv(THIS->stl.v_indices[i].vertex[2]));
av_store(facet, 0, newSVnv(THIS->its.indices[i][0]));
av_store(facet, 1, newSVnv(THIS->its.indices[i][1]));
av_store(facet, 2, newSVnv(THIS->its.indices[i][2]));
}
RETVAL = newRV_noinc((SV*)facets);