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PrusaSlicer-NonPlainar/xs/src/libslic3r/Format/AMF.cpp

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Initial rewrite of the file accessors from Perl to C++. This is especially important for the extremely slow AMF parser. Also there is a new file handler for the Prusa Control 'PRUS' format.
2017-02-26 20:46:33 +00:00
#include <string.h>
#include <map>
#include <string>
#include <expat/expat.h>
#include "../libslic3r.h"
#include "../Model.hpp"
#include "AMF.hpp"
#if 0
// Enable debugging and assert in this file.
#define DEBUG
#define _DEBUG
#undef NDEBUG
#endif
#include <assert.h>
namespace Slic3r
{
struct AMFParserContext
{
AMFParserContext(XML_Parser parser, Model *model) :
m_parser(parser),
m_model(*model),
m_object(nullptr),
m_volume(nullptr),
m_material(nullptr),
m_instance(nullptr)
{
m_path.reserve(12);
}
void stop()
{
XML_StopParser(m_parser, 0);
}
void startElement(const char *name, const char **atts);
void endElement(const char *name);
void endDocument();
void characters(const XML_Char *s, int len);
static void XMLCALL startElement(void *userData, const char *name, const char **atts)
{
AMFParserContext *ctx = (AMFParserContext*)userData;
ctx->startElement(name, atts);
}
static void XMLCALL endElement(void *userData, const char *name)
{
AMFParserContext *ctx = (AMFParserContext*)userData;
ctx->endElement(name);
}
/* s is not 0 terminated. */
static void XMLCALL characters(void *userData, const XML_Char *s, int len)
{
AMFParserContext *ctx = (AMFParserContext*)userData;
ctx->characters(s, len);
}
static const char* get_attribute(const char **atts, const char *id) {
if (atts == nullptr)
return nullptr;
while (*atts != nullptr) {
if (strcmp(*(atts ++), id) == 0)
return *atts;
++ atts;
}
return nullptr;
}
enum AMFNodeType {
NODE_TYPE_INVALID = 0,
NODE_TYPE_UNKNOWN,
NODE_TYPE_AMF, // amf
// amf/metadata
NODE_TYPE_MATERIAL, // amf/material
// amf/material/metadata
NODE_TYPE_OBJECT, // amf/object
// amf/object/metadata
NODE_TYPE_MESH, // amf/object/mesh
NODE_TYPE_VERTICES, // amf/object/mesh/vertices
NODE_TYPE_VERTEX, // amf/object/mesh/vertices/vertex
NODE_TYPE_COORDINATES, // amf/object/mesh/vertices/vertex/coordinates
NODE_TYPE_COORDINATE_X, // amf/object/mesh/vertices/vertex/coordinates/x
NODE_TYPE_COORDINATE_Y, // amf/object/mesh/vertices/vertex/coordinates/y
NODE_TYPE_COORDINATE_Z, // amf/object/mesh/vertices/vertex/coordinates/z
NODE_TYPE_VOLUME, // amf/object/mesh/volume
// amf/object/mesh/volume/metadata
NODE_TYPE_TRIANGLE, // amf/object/mesh/volume/triangle
NODE_TYPE_VERTEX1, // amf/object/mesh/volume/triangle/v1
NODE_TYPE_VERTEX2, // amf/object/mesh/volume/triangle/v2
NODE_TYPE_VERTEX3, // amf/object/mesh/volume/triangle/v3
NODE_TYPE_CONSTELLATION, // amf/constellation
NODE_TYPE_INSTANCE, // amf/constellation/instance
NODE_TYPE_DELTAX, // amf/constellation/instance/deltax
NODE_TYPE_DELTAY, // amf/constellation/instance/deltay
NODE_TYPE_RZ, // amf/constellation/instance/rz
NODE_TYPE_METADATA, // anywhere under amf/*/metadata
};
struct Instance {
Instance() : deltax_set(false), deltay_set(false), rz_set(false) {}
// Shift in the X axis.
float deltax;
bool deltax_set;
// Shift in the Y axis.
float deltay;
bool deltay_set;
// Rotation around the Z axis.
float rz;
bool rz_set;
};
struct Object {
Object() : idx(-1) {}
int idx;
std::vector<Instance> instances;
};
// Current Expat XML parser instance.
XML_Parser m_parser;
// Model to receive objects extracted from an AMF file.
Model &m_model;
// Current parsing path in the XML file.
std::vector<AMFNodeType> m_path;
// Current object allocated for an amf/object XML subtree.
ModelObject *m_object;
// Map from obect name to object idx & instances.
std::map<std::string, Object> m_object_instances_map;
// Vertices parsed for the current m_object.
std::vector<float> m_object_vertices;
// Current volume allocated for an amf/object/mesh/volume subtree.
ModelVolume *m_volume;
// Faces collected for the current m_volume.
std::vector<int> m_volume_facets;
// Current material allocated for an amf/metadata subtree.
ModelMaterial *m_material;
// Current instance allocated for an amf/constellation/instance subtree.
Instance *m_instance;
// Generic string buffer for vertices, face indices, metadata etc.
std::string m_value[3];
};
void AMFParserContext::startElement(const char *name, const char **atts)
{
AMFNodeType node_type_new = NODE_TYPE_UNKNOWN;
switch (m_path.size()) {
case 0:
// An AMF file must start with an <amf> tag.
node_type_new = NODE_TYPE_AMF;
if (strcmp(name, "amf") != 0)
this->stop();
break;
case 1:
if (strcmp(name, "metadata") == 0) {
const char *type = get_attribute(atts, "type");
if (type != nullptr) {
m_value[0] = type;
node_type_new = NODE_TYPE_METADATA;
}
} else if (strcmp(name, "material") == 0) {
const char *material_id = get_attribute(atts, "id");
m_material = m_model.add_material((material_id == nullptr) ? "_" : material_id);
node_type_new = NODE_TYPE_MATERIAL;
} else if (strcmp(name, "object") == 0) {
const char *object_id = get_attribute(atts, "id");
if (object_id == nullptr)
this->stop();
else {
assert(m_object_vertices.empty());
m_object = m_model.add_object();
m_object_instances_map[object_id].idx = int(m_model.objects.size())-1;
node_type_new = NODE_TYPE_OBJECT;
}
} else if (strcmp(name, "constellation") == 0) {
node_type_new = NODE_TYPE_CONSTELLATION;
}
break;
case 2:
if (strcmp(name, "metadata") == 0) {
if (m_path[1] == NODE_TYPE_MATERIAL || m_path[1] == NODE_TYPE_OBJECT) {
m_value[0] = get_attribute(atts, "type");
node_type_new = NODE_TYPE_METADATA;
}
} else if (strcmp(name, "mesh") == 0) {
if (m_path[1] == NODE_TYPE_OBJECT)
node_type_new = NODE_TYPE_MESH;
} else if (strcmp(name, "instance") == 0) {
if (m_path[1] == NODE_TYPE_CONSTELLATION) {
const char *object_id = get_attribute(atts, "objectid");
if (object_id == nullptr)
this->stop();
else {
m_object_instances_map[object_id].instances.push_back(AMFParserContext::Instance());
m_instance = &m_object_instances_map[object_id].instances.back();
node_type_new = NODE_TYPE_INSTANCE;
}
}
else
this->stop();
}
break;
case 3:
if (m_path[2] == NODE_TYPE_MESH) {
assert(m_object);
if (strcmp(name, "vertices") == 0)
node_type_new = NODE_TYPE_VERTICES;
else if (strcmp(name, "volume") == 0) {
assert(! m_volume);
m_volume = m_object->add_volume(TriangleMesh());
node_type_new = NODE_TYPE_VOLUME;
}
} else if (m_path[2] == NODE_TYPE_INSTANCE) {
assert(m_instance);
if (strcmp(name, "deltax") == 0)
node_type_new = NODE_TYPE_DELTAX;
else if (strcmp(name, "deltay") == 0)
node_type_new = NODE_TYPE_DELTAY;
else if (strcmp(name, "rz") == 0)
node_type_new = NODE_TYPE_RZ;
}
break;
case 4:
if (m_path[3] == NODE_TYPE_VERTICES) {
if (strcmp(name, "vertex") == 0)
node_type_new = NODE_TYPE_VERTEX;
} else if (m_path[3] == NODE_TYPE_VOLUME) {
if (strcmp(name, "metadata") == 0) {
const char *type = get_attribute(atts, "type");
if (type == nullptr)
this->stop();
else {
m_value[0] = type;
node_type_new = NODE_TYPE_METADATA;
}
} else if (strcmp(name, "triangle") == 0)
node_type_new = NODE_TYPE_TRIANGLE;
}
break;
case 5:
if (strcmp(name, "coordinates") == 0) {
if (m_path[4] == NODE_TYPE_VERTEX) {
node_type_new = NODE_TYPE_COORDINATES;
} else
this->stop();
} else if (name[0] == 'v' && name[1] >= '1' && name[1] <= '3' && name[2] == 0) {
if (m_path[4] == NODE_TYPE_TRIANGLE) {
node_type_new = AMFNodeType(NODE_TYPE_VERTEX1 + name[1] - '1');
} else
this->stop();
}
break;
case 6:
if ((name[0] == 'x' || name[0] == 'y' || name[0] == 'z') && name[1] == 0) {
if (m_path[5] == NODE_TYPE_COORDINATES)
node_type_new = AMFNodeType(NODE_TYPE_COORDINATE_X + name[0] - 'x');
else
this->stop();
}
break;
default:
break;
}
m_path.push_back(node_type_new);
}
void AMFParserContext::characters(const XML_Char *s, int len)
{
if (m_path.back() == NODE_TYPE_METADATA) {
m_value[1].append(s, len);
}
else
{
switch (m_path.size()) {
case 4:
if (m_path.back() == NODE_TYPE_DELTAX || m_path.back() == NODE_TYPE_DELTAY || m_path.back() == NODE_TYPE_RZ)
m_value[0].append(s, len);
break;
case 6:
switch (m_path.back()) {
case NODE_TYPE_VERTEX1: m_value[0].append(s, len); break;
case NODE_TYPE_VERTEX2: m_value[1].append(s, len); break;
case NODE_TYPE_VERTEX3: m_value[2].append(s, len); break;
default: break;
}
case 7:
switch (m_path.back()) {
case NODE_TYPE_COORDINATE_X: m_value[0].append(s, len); break;
case NODE_TYPE_COORDINATE_Y: m_value[1].append(s, len); break;
case NODE_TYPE_COORDINATE_Z: m_value[2].append(s, len); break;
default: break;
}
default:
break;
}
}
}
void AMFParserContext::endElement(const char *name)
{
switch (m_path.back()) {
// Constellation transformation:
case NODE_TYPE_DELTAX:
assert(m_instance);
m_instance->deltax = float(atof(m_value[0].c_str()));
m_instance->deltax_set = true;
m_value[0].clear();
break;
case NODE_TYPE_DELTAY:
assert(m_instance);
m_instance->deltay = float(atof(m_value[0].c_str()));
m_instance->deltay_set = true;
m_value[0].clear();
break;
case NODE_TYPE_RZ:
assert(m_instance);
m_instance->rz = float(atof(m_value[0].c_str()));
m_instance->rz_set = true;
m_value[0].clear();
break;
// Object vertices:
case NODE_TYPE_VERTEX:
assert(m_object);
// Parse the vertex data
m_object_vertices.emplace_back(atof(m_value[0].c_str()));
m_object_vertices.emplace_back(atof(m_value[1].c_str()));
m_object_vertices.emplace_back(atof(m_value[2].c_str()));
m_value[0].clear();
m_value[1].clear();
m_value[2].clear();
break;
// Faces of the current volume:
case NODE_TYPE_TRIANGLE:
assert(m_object && m_volume);
m_volume_facets.push_back(atoi(m_value[0].c_str()));
m_volume_facets.push_back(atoi(m_value[1].c_str()));
m_volume_facets.push_back(atoi(m_value[2].c_str()));
m_value[0].clear();
m_value[1].clear();
m_value[2].clear();
break;
// Closing the current volume. Create an STL from m_volume_facets pointing to m_object_vertices.
case NODE_TYPE_VOLUME:
{
assert(m_object && m_volume);
stl_file &stl = m_volume->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;
stl_allocate(&stl);
for (size_t i = 0; i < m_volume_facets.size();) {
stl_facet &facet = stl.facet_start[i/3];
for (unsigned int v = 0; v < 3; ++ v)
memcpy(&facet.vertex[v].x, &m_object_vertices[m_volume_facets[i ++] * 3], 3 * sizeof(float));
}
stl_get_size(&stl);
m_volume->mesh.repair();
m_volume_facets.clear();
m_volume = nullptr;
break;
}
case NODE_TYPE_OBJECT:
assert(m_object);
m_object_vertices.clear();
m_object = nullptr;
break;
case NODE_TYPE_MATERIAL:
assert(m_material);
m_material = nullptr;
break;
case NODE_TYPE_INSTANCE:
assert(m_instance);
m_instance = nullptr;
break;
case NODE_TYPE_METADATA:
if (strncmp(m_value[0].c_str(), "slic3r.", 7) == 0) {
const char *opt_key = m_value[0].c_str() + 7;
if (print_config_def.options.find(opt_key) != print_config_def.options.end()) {
DynamicPrintConfig *config = nullptr;
if (m_path.size() == 3) {
if (m_path[1] == NODE_TYPE_MATERIAL && m_material)
config = &m_material->config;
else if (m_path[1] == NODE_TYPE_OBJECT && m_object)
config = &m_object->config;
} else if (m_path.size() == 5 && m_path[3] == NODE_TYPE_VOLUME && m_volume)
config = &m_volume->config;
if (config)
config->set_deserialize(opt_key, m_value[1]);
} else if (m_path.size() == 3 && m_path[1] == NODE_TYPE_OBJECT && m_object && strcmp(opt_key, "layer_height_profile") == 0) {
// Parse object's layer height profile, a semicolon separated list of floats.
char *p = const_cast<char*>(m_value[1].c_str());
for (;;) {
char *end = strchr(p, ';');
if (end != nullptr)
*end = 0;
m_object->layer_height_profile.push_back(float(atof(p)));
if (end == nullptr)
break;
p = end + 1;
}
m_object->layer_height_profile_valid = true;
} else if (m_path.size() == 5 && m_path[3] == NODE_TYPE_VOLUME && m_volume && strcmp(opt_key, "modifier") == 0) {
// Is this volume a modifier volume?
m_volume->modifier = atoi(m_value[1].c_str()) == 1;
}
} else if (m_path.size() == 3) {
if (m_path[1] == NODE_TYPE_MATERIAL) {
if (m_material)
m_material->attributes[m_value[0]] = m_value[1];
} else if (m_path[1] == NODE_TYPE_OBJECT) {
if (m_object && m_value[0] == "name")
m_object->name = std::move(m_value[1]);
}
} else if (m_path.size() == 5 && m_path[3] == NODE_TYPE_VOLUME) {
if (m_volume && m_value[0] == "name")
m_volume->name = std::move(m_value[1]);
}
m_value[0].clear();
m_value[1].clear();
break;
default:
break;
}
m_path.pop_back();
}
void AMFParserContext::endDocument()
{
for (const auto &object : m_object_instances_map) {
if (object.second.idx == -1) {
printf("Undefined object %s referenced in constellation\n", object.first.c_str());
continue;
}
for (const Instance &instance : object.second.instances)
if (instance.deltax_set && instance.deltay_set) {
ModelInstance *mi = m_model.objects[object.second.idx]->add_instance();
mi->offset.x = instance.deltax;
mi->offset.y = instance.deltay;
mi->rotation = instance.rz_set ? instance.rz : 0.f;
}
}
}
// Load an AMF file into a provided model.
bool load_amf(const char *path, Model *model)
{
XML_Parser parser = XML_ParserCreate(nullptr); // encoding
if (! parser) {
printf("Couldn't allocate memory for parser\n");
return false;
}
FILE *pFile = ::fopen(path, "rt");
if (pFile == nullptr) {
printf("Cannot open file %s\n", path);
return false;
}
AMFParserContext ctx(parser, model);
XML_SetUserData(parser, (void*)&ctx);
XML_SetElementHandler(parser, AMFParserContext::startElement, AMFParserContext::endElement);
XML_SetCharacterDataHandler(parser, AMFParserContext::characters);
char buff[8192];
bool result = false;
for (;;) {
int len = (int)fread(buff, 1, 8192, pFile);
if (ferror(pFile)) {
printf("AMF parser: Read error\n");
break;
}
int done = feof(pFile);
if (XML_Parse(parser, buff, len, done) == XML_STATUS_ERROR) {
Fixing compilation issues.
2017-02-26 22:13:31 +00:00
printf("AMF parser: Parse error at line %ul:\n%s\n",
Initial rewrite of the file accessors from Perl to C++. This is especially important for the extremely slow AMF parser. Also there is a new file handler for the Prusa Control 'PRUS' format.
2017-02-26 20:46:33 +00:00
XML_GetCurrentLineNumber(parser),
XML_ErrorString(XML_GetErrorCode(parser)));
break;
}
if (done) {
result = true;
break;
}
}
XML_ParserFree(parser);
::fclose(pFile);
if (result)
ctx.endDocument();
return result;
}
bool store_amf(const char *path, Model *model)
{
FILE *file = ::fopen(path, "wb");
if (file == nullptr)
return false;
fprintf(file, "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n");
fprintf(file, "<amf unit=\"millimeter\">\n");
fprintf(file, "<metadata type=\"cad\">Slic3r %s</metadata>\n", SLIC3R_VERSION);
for (const auto &material : model->materials) {
if (material.first.empty())
continue;
// note that material-id must never be 0 since it's reserved by the AMF spec
fprintf(file, " <material id=\"%s\">\n", material.first.c_str());
for (const auto &attr : material.second->attributes)
fprintf(file, " <metadata type=\"%s\">%s</metadata>\n", attr.first.c_str(), attr.second.c_str());
for (const std::string &key : material.second->config.keys())
Fixed a bug in AMF serialization.
2017-02-26 21:59:25 +00:00
fprintf(file, " <metadata type=\"slic3r.%s\">%s</metadata>\n", key.c_str(), material.second->config.serialize(key).c_str());
Initial rewrite of the file accessors from Perl to C++. This is especially important for the extremely slow AMF parser. Also there is a new file handler for the Prusa Control 'PRUS' format.
2017-02-26 20:46:33 +00:00
fprintf(file, " </material>\n");
}
std::string instances;
for (size_t object_id = 0; object_id < model->objects.size(); ++ object_id) {
ModelObject *object = model->objects[object_id];
Fixing compilation issues.
2017-02-26 22:13:31 +00:00
fprintf(file, " <object id=\"" PRINTF_ZU "\">\n", object_id);
Initial rewrite of the file accessors from Perl to C++. This is especially important for the extremely slow AMF parser. Also there is a new file handler for the Prusa Control 'PRUS' format.
2017-02-26 20:46:33 +00:00
for (const std::string &key : object->config.keys())
Fixed a bug in AMF serialization.
2017-02-26 21:59:25 +00:00
fprintf(file, " <metadata type=\"slic3r.%s\">%s</metadata>\n", key.c_str(), object->config.serialize(key).c_str());
Initial rewrite of the file accessors from Perl to C++. This is especially important for the extremely slow AMF parser. Also there is a new file handler for the Prusa Control 'PRUS' format.
2017-02-26 20:46:33 +00:00
if (! object->name.empty())
fprintf(file, " <metadata type=\"name\">%s</metadata>\n", object->name.c_str());
std::vector<double> layer_height_profile = object->layer_height_profile_valid ? object->layer_height_profile : std::vector<double>();
if (layer_height_profile.size() >= 4 && (layer_height_profile.size() % 2) == 0) {
// Store the layer height profile as a single semicolon separated list.
fprintf(file, " <metadata type=\"slic3r.layer_height_profile\">");
fprintf(file, "%f", layer_height_profile.front());
for (size_t i = 1; i < layer_height_profile.size(); ++ i)
fprintf(file, ",%f", layer_height_profile[i]);
fprintf(file, "\n </metadata>\n");
}
//FIXME Store the layer height ranges (ModelObject::layer_height_ranges)
fprintf(file, " <mesh>\n");
fprintf(file, " <vertices>\n");
std::vector<int> vertices_offsets;
int num_vertices = 0;
for (ModelVolume *volume : object->volumes) {
vertices_offsets.push_back(num_vertices);
if (! volume->mesh.repaired)
CONFESS("store_amf() requires repair()");
auto &stl = volume->mesh.stl;
if (stl.v_shared == nullptr)
stl_generate_shared_vertices(&stl);
for (size_t i = 0; i < stl.stats.shared_vertices; ++ i) {
fprintf(file, " <vertex>\n");
fprintf(file, " <coordinates>\n");
Fixing compilation issues.
2017-02-26 22:13:31 +00:00
fprintf(file, " <x>%f</x>\n", stl.v_shared[i].x);
fprintf(file, " <y>%f</y>\n", stl.v_shared[i].y);
fprintf(file, " <z>%f</z>\n", stl.v_shared[i].z);
Initial rewrite of the file accessors from Perl to C++. This is especially important for the extremely slow AMF parser. Also there is a new file handler for the Prusa Control 'PRUS' format.
2017-02-26 20:46:33 +00:00
fprintf(file, " </coordinates>\n");
fprintf(file, " </vertex>\n");
}
num_vertices += stl.stats.shared_vertices;
}
fprintf(file, " </vertices>\n");
for (size_t i_volume = 0; i_volume < object->volumes.size(); ++ i_volume) {
ModelVolume *volume = object->volumes[i_volume];
int vertices_offset = vertices_offsets[i_volume];
if (volume->material_id().empty())
fprintf(file, " <volume>\n");
else
fprintf(file, " <volume materialid=\"%s\">\n", volume->material_id().c_str());
for (const std::string &key : volume->config.keys())
Fixed a bug in AMF serialization.
2017-02-26 21:59:25 +00:00
fprintf(file, " <metadata type=\"slic3r.%s\">%s</metadata>\n", key.c_str(), volume->config.serialize(key).c_str());
Initial rewrite of the file accessors from Perl to C++. This is especially important for the extremely slow AMF parser. Also there is a new file handler for the Prusa Control 'PRUS' format.
2017-02-26 20:46:33 +00:00
if (! volume->name.empty())
fprintf(file, " <metadata type=\"name\">%s</metadata>\n", volume->name.c_str());
if (volume->modifier)
fprintf(file, " <metadata type=\"slic3r.modifier\">1</metadata>\n");
for (int i = 0; i < volume->mesh.stl.stats.number_of_facets; ++ i) {
fprintf(file, " <triangle>\n");
for (int j = 0; j < 3; ++ j)
fprintf(file, " <v%d>%d</v%d>\n", j, volume->mesh.stl.v_indices[i].vertex[j] + vertices_offset, j);
fprintf(file, " </triangle>\n");
}
fprintf(file, " </volume>\n");
}
fprintf(file, " </mesh>\n");
fprintf(file, " </object>\n");
if (! object->instances.empty()) {
for (ModelInstance *instance : object->instances) {
char buf[512];
sprintf(buf,
Fixing compilation issues.
2017-02-26 22:13:31 +00:00
" <instance objectid=\"" PRINTF_ZU "\">\n"
" <deltax>%lf</deltax>\n"
" <deltay>%lf</deltay>\n"
" <rz>%lf</rz>\n"
Initial rewrite of the file accessors from Perl to C++. This is especially important for the extremely slow AMF parser. Also there is a new file handler for the Prusa Control 'PRUS' format.
2017-02-26 20:46:33 +00:00
" </instance>\n",
object_id,
instance->offset.x,
instance->offset.x,
instance->rotation);
//FIXME missing instance->scaling_factor
instances.append(buf);
}
}
}
if (! instances.empty()) {
fprintf(file, " <constellation id=\"1\">\n");
fwrite(instances.data(), instances.size(), 1, file);
fprintf(file, " </constellation>\n");
}
fprintf(file, "</amf>\n");
fclose(file);
return true;
}
}; // namespace Slic3r
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