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One step further to the C++ Supports.

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This commit is contained in:
bubnikv 2016-11-23 15:51:47 +01:00
parent 1a1eaa0810
commit d8be4de6cf
8 changed files with 500 additions and 395 deletions
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21
xs/src/libslic3r/ClipperUtils.cpp
View file

@ -1004,4 +1004,25 @@ void safety_offset(ClipperLib::Paths* paths)
scaleClipperPolygons(*paths, 1.0/CLIPPER_OFFSET_SCALE);
}
Polygons top_level_islands(const Slic3r::Polygons &polygons)
{
ClipperLib::Paths input;
Slic3rMultiPoints_to_ClipperPaths(polygons, &input);
// init Clipper
ClipperLib::Clipper clipper;
clipper.Clear();
// perform union
clipper.AddPaths(input, ClipperLib::ptSubject, true);
ClipperLib::PolyTree polytree;
clipper.Execute(ClipperLib::ctUnion, polytree, ClipperLib::pftEvenOdd, ClipperLib::pftEvenOdd);
// Convert only the top level islands to the output.
Polygons out;
out.reserve(polytree.ChildCount());
for (int i = 0; i < polytree.ChildCount(); ++i) {
out.push_back(Polygon());
ClipperPath_to_Slic3rMultiPoint(polytree.Childs[i]->Contour, &out.back());
}
return out;
}
} // namespace Slic3r

2
xs/src/libslic3r/ClipperUtils.hpp
View file

@ -162,6 +162,8 @@ void simplify_polygons(const Slic3r::Polygons &subject, Slic3r::ExPolygons* retv
void safety_offset(ClipperLib::Paths* paths);
Polygons top_level_islands(const Slic3r::Polygons &polygons);
}
#endif

12
xs/src/libslic3r/ExPolygon.hpp
View file

@ -253,6 +253,18 @@ inline void polygons_append(Polygons &dst, ExPolygons &&src)
}
#endif
inline void expolygons_append(ExPolygons &dst, const ExPolygons &src)
{
dst.insert(dst.end(), src.begin(), src.end());
}
#if SLIC3R_CPPVER >= 11
inline void expolygons_append(ExPolygons &dst, ExPolygons &&src)
{
std::move(std::begin(src), std::end(src), std::back_inserter(dst));
}
#endif
inline void expolygons_rotate(ExPolygons &expolys, double angle)
{
for (ExPolygons::iterator p = expolys.begin(); p != expolys.end(); ++p)

28
xs/src/libslic3r/ExtrusionEntity.hpp
View file

@ -69,11 +69,11 @@ class ExtrusionPath : public ExtrusionEntity
public:
Polyline polyline;
ExtrusionRole role;
// Volumetric velocity. mm^3 of plastic per mm of linear head motion
// Volumetric velocity. mm^3 of plastic per mm of linear head motion. Used by the G-code generator.
double mm3_per_mm;
// Width of the extrusion.
// Width of the extrusion, used for visualization purposes.
float width;
// Height of the extrusion.
// Height of the extrusion, used for visualization purposed.
float height;
ExtrusionPath(ExtrusionRole role) : role(role), mm3_per_mm(-1), width(-1), height(-1) {};
@ -194,6 +194,28 @@ class ExtrusionLoop : public ExtrusionEntity
Polyline as_polyline() const { return this->polygon().split_at_first_point(); }
};
inline void extrusion_entities_append_paths(ExtrusionEntitiesPtr &dst, Polylines &polylines, ExtrusionRole role, double mm3_per_mm, float width, float height)
{
dst.reserve(dst.size() + polylines.size());
for (Polylines::const_iterator it_polyline = polylines.begin(); it_polyline != polylines.end(); ++ it_polyline) {
ExtrusionPath *extrusion_path = new ExtrusionPath(role, mm3_per_mm, width, height);
dst.push_back(extrusion_path);
extrusion_path->polyline = *it_polyline;
}
}
#if SLIC3R_CPPVER >= 11
inline void extrusion_entities_append_paths(ExtrusionEntitiesPtr &dst, Polylines &&polylines, ExtrusionRole role, double mm3_per_mm, float width, float height)
{
dst.reserve(dst.size() + polylines.size());
for (Polylines::const_iterator it_polyline = polylines.begin(); it_polyline != polylines.end(); ++ it_polyline) {
ExtrusionPath *extrusion_path = new ExtrusionPath(role, mm3_per_mm, width, height);
dst.push_back(extrusion_path);
extrusion_path->polyline = std::move(*it_polyline);
}
}
#endif // SLIC3R_CPPVER >= 11
}
#endif

29
xs/src/libslic3r/Fill/Fill.cpp
View file

@ -246,22 +246,21 @@ void make_fill(LayerRegion &layerm, ExtrusionEntityCollection &out)
flow = Flow::new_from_spacing(f->spacing, flow.nozzle_diameter, h, is_bridge || f->use_bridge_flow());
}
// save into layer
{
ExtrusionRole role = is_bridge ? erBridgeInfill :
(surface.is_solid() ? ((surface.surface_type == stTop) ? erTopSolidInfill : erSolidInfill) : erInternalInfill);
ExtrusionEntityCollection &collection = *(new ExtrusionEntityCollection());
out.entities.push_back(&collection);
// Only concentric fills are not sorted.
collection.no_sort = f->no_sort();
for (Polylines::iterator it = polylines.begin(); it != polylines.end(); ++ it) {
ExtrusionPath *path = new ExtrusionPath(role, flow.mm3_per_mm(), flow.width, flow.height);
collection.entities.push_back(path);
path->polyline.points.swap(it->points);
}
}
// Save into layer.
auto *eec = new ExtrusionEntityCollection();
out.entities.push_back(eec);
// Only concentric fills are not sorted.
eec->no_sort = f->no_sort();
extrusion_entities_append_paths(
eec->entities, STDMOVE(polylines),
is_bridge ?
erBridgeInfill :
(surface.is_solid() ?
((surface.surface_type == stTop) ? erTopSolidInfill : erSolidInfill) :
erInternalInfill),
flow.mm3_per_mm(), flow.width, flow.height);
}
// add thin fill regions
// thin_fills are of C++ Slic3r::ExtrusionEntityCollection, perl type Slic3r::ExtrusionPath::Collection
// Unpacks the collection, creates multiple collections per path.

55
xs/src/libslic3r/Flow.cpp
View file

@ -40,14 +40,17 @@ Flow::new_from_spacing(float spacing, float nozzle_diameter, float height, bool
/* This method returns the centerline spacing between two adjacent extrusions
having the same extrusion width (and other properties). */
float
Flow::spacing() const {
if (this->bridge) {
Flow::spacing() const
{
#ifdef HAS_PERIMETER_LINE_OVERLAP
if (this->bridge)
return this->width + BRIDGE_EXTRA_SPACING;
}
// rectangle with semicircles at the ends
float min_flow_spacing = this->width - this->height * (1 - PI/4.0);
return this->width - OVERLAP_FACTOR * (this->width - min_flow_spacing);
return this->width - PERIMETER_LINE_OVERLAP_FACTOR * (this->width - min_flow_spacing);
#else
return this->bridge ? (this->width + BRIDGE_EXTRA_SPACING) : (this->width - this->height * (1 - PI/4.0));
#endif
}
/* This method returns the centerline spacing between an extrusion using this
@ -57,23 +60,17 @@ float
Flow::spacing(const Flow &other) const {
assert(this->height == other.height);
assert(this->bridge == other.bridge);
if (this->bridge) {
return this->width/2 + other.width/2 + BRIDGE_EXTRA_SPACING;
}
return this->spacing()/2 + other.spacing()/2;
return this->bridge ?
0.5f * this->width + 0.5f * other.width + BRIDGE_EXTRA_SPACING :
0.5f * this->spacing() + 0.5f * other.spacing();
}
/* This method returns extrusion volume per head move unit. */
double
Flow::mm3_per_mm() const {
if (this->bridge) {
return (this->width * this->width) * PI/4.0;
}
// rectangle with semicircles at the ends
return this->width * this->height + (this->height*this->height) / 4.0 * (PI-4.0);
double Flow::mm3_per_mm() const
{
return this->bridge ?
(this->width * this->width) * PI/4.0 :
this->width * this->height + (this->height * this->height) / 4.0 * (PI-4.0);
}
/* This static method returns bridge width for a given nozzle diameter. */
@ -85,8 +82,7 @@ float Flow::_bridge_width(float nozzle_diameter, float bridge_flow_ratio) {
}
/* This static method returns a sane extrusion width default. */
float
Flow::_auto_width(FlowRole role, float nozzle_diameter, float height) {
float Flow::_auto_width(FlowRole role, float nozzle_diameter, float height) {
// here we calculate a sane default by matching the flow speed (at the nozzle) and the feed rate
// shape: rectangle with semicircles at the ends
float width = ((nozzle_diameter*nozzle_diameter) * PI + (height*height) * (4.0 - PI)) / (4.0 * height);
@ -106,14 +102,15 @@ Flow::_auto_width(FlowRole role, float nozzle_diameter, float height) {
}
/* This static method returns the extrusion width value corresponding to the supplied centerline spacing. */
float
Flow::_width_from_spacing(float spacing, float nozzle_diameter, float height, bool bridge) {
if (bridge) {
return spacing - BRIDGE_EXTRA_SPACING;
}
// rectangle with semicircles at the ends
return spacing + OVERLAP_FACTOR * height * (1 - PI/4.0);
float Flow::_width_from_spacing(float spacing, float nozzle_diameter, float height, bool bridge)
{
return bridge ?
(spacing - BRIDGE_EXTRA_SPACING) :
#ifdef HAS_PERIMETER_LINE_OVERLAP
(spacing + PERIMETER_LINE_OVERLAP_FACTOR * height * (1 - PI/4.0));
#else
(spacing + height * (1 - PI/4.0));
#endif
}
}

22
xs/src/libslic3r/Flow.hpp
View file

@ -7,8 +7,14 @@
namespace Slic3r {
// Extra spacing of bridge threads, in mm.
#define BRIDGE_EXTRA_SPACING 0.05
#define OVERLAP_FACTOR 1.0
// Overlap factor of perimeter lines. Currently no overlap.
// #define HAS_OVERLAP
#ifdef HAS_PERIMETER_LINE_OVERLAP
#define PERIMETER_LINE_OVERLAP_FACTOR 1.0
#endif
enum FlowRole {
frExternalPerimeter,
@ -22,9 +28,17 @@ enum FlowRole {
class Flow
{
public:
float width, height, nozzle_diameter;
bool bridge;
public:
// Non bridging flow: Maximum width of an extrusion with semicircles at the ends.
// Bridging flow: Bridge thread diameter.
float width;
// Non bridging flow: Layer height.
// Bridging flow: Bridge thread diameter = layer height.
float height;
// Nozzle diameter is
float nozzle_diameter;
// Is it a bridge?
bool bridge;
Flow(float _w, float _h, float _nd, bool _bridge = false)
: width(_w), height(_h), nozzle_diameter(_nd), bridge(_bridge) {};

726
xs/src/libslic3r/SupportMaterial.cpp
View file

@ -1,17 +1,22 @@
#include "ClipperUtils.hpp"
#include "ExtrusionEntityCollection.hpp"
#include "PerimeterGenerator.hpp"
#include "Print.hpp"
#include "Layer.hpp"
#include "Print.hpp"
#include "SupportMaterial.hpp"
#include "Fill/FillBase.hpp"
#include "SVG.hpp"
#include <cmath>
#include <cassert>
#include <memory>
#define SLIC3R_DEBUG
#define SLIC3R_DEBUG
// Make assert active if SLIC3R_DEBUG
#ifdef SLIC3R_DEBUG
#undef NDEBUG
#include "SVG.hpp"
#endif
namespace Slic3r {
@ -650,11 +655,12 @@ PrintObjectSupportMaterial::MyLayersPtr PrintObjectSupportMaterial::top_contact_
// now apply the contact areas to the layer were they need to be made
if (! contact_polygons.empty()) {
// get the average nozzle diameter used on this layer
MyLayer &new_layer = layer_allocate(layer_storage, sltTopContact);
MyLayer &new_layer = layer_allocate(layer_storage, sltTopContact);
const Layer *layer_below = (layer_id > 0) ? object.get_layer(layer_id - 1) : NULL;
new_layer.idx_object_layer_above = layer_id;
if (m_soluble_interface) {
// Align the contact surface height with a layer immediately below the supported layer.
new_layer.height = (layer_id > 0) ?
new_layer.height = layer_below ?
// Interface layer will be synchronized with the object.
object.get_layer(layer_id - 1)->height :
// Don't know the thickness of the raft layer yet.
@ -678,10 +684,23 @@ PrintObjectSupportMaterial::MyLayersPtr PrintObjectSupportMaterial::top_contact_
}
nozzle_dmr /= coordf_t(n_nozzle_dmrs);
new_layer.print_z = layer.print_z - nozzle_dmr - m_object_config->support_material_contact_distance;
// Don't know the height of the top contact layer yet. The top contact layer is printed with a normal flow and
// its height will be set adaptively later on.
new_layer.height = 0.;
new_layer.bottom_z = new_layer.print_z;
if (m_synchronize_support_layers_with_object && layer_below) {
int layer_id_below = layer_id - 1;
const Layer *layer_above = layer_below;
for (;;) {
if (layer_below->print_z - layer_below->height < new_layer.print_z - m_support_layer_height_max) {
// layer_below is too low.
break;
}
}
new_layer.height = 0.;
new_layer.bottom_z = new_layer.print_z - new_layer.height;
} else if (layer_below) {
// Don't know the height of the top contact layer yet. The top contact layer is printed with a normal flow and
// its height will be set adaptively later on.
new_layer.height = 0.;
new_layer.bottom_z = new_layer.print_z;
}
}
// Ignore this contact area if it's too low.
@ -729,12 +748,16 @@ PrintObjectSupportMaterial::MyLayersPtr PrintObjectSupportMaterial::bottom_conta
if (top.empty())
continue;
// Collect projections of all contact areas above or at the same level as this top surface.
for (; contact_idx >= 0 && top_contacts[contact_idx]->print_z >= layer.print_z; -- contact_idx)
for (; contact_idx >= 0 && top_contacts[contact_idx]->print_z >= layer.print_z; -- contact_idx) {
// Contact surfaces are expanded away from the object, trimmed by the object.
polygons_append(projection, top_contacts[contact_idx]->polygons);
// These are the overhang surfaces. They are touching the object and they are not expanded away from the object.
polygons_append(projection, *top_contacts[contact_idx]->aux_polygons);
}
// Now find whether any projection of the contact surfaces above layer.print_z not yet supported by any
// top surfaces above layer.print_z falls onto this top surface.
// touching are the contact surfaces supported exclusively by this top surfaaces.
Polygons touching = intersection(projection, top);
Polygons touching = intersection(top, projection, true); // Do safety offset on the projection surfaces, so they overlap.
if (touching.empty())
continue;
// Allocate a new bottom contact layer.
@ -760,6 +783,8 @@ PrintObjectSupportMaterial::MyLayersPtr PrintObjectSupportMaterial::bottom_conta
projection = diff(projection, touching);
}
}
std::reverse(bottom_contacts.begin(), bottom_contacts.end());
return bottom_contacts;
}
@ -829,8 +854,9 @@ PrintObjectSupportMaterial::MyLayersPtr PrintObjectSupportMaterial::raft_and_int
assert(dist > 0.);
// Insert intermediate layers.
size_t n_layers_extra = size_t(ceil(dist / m_support_layer_height_max));
assert(n_layers_extra > 0);
coordf_t step = dist / coordf_t(n_layers_extra);
if (! m_soluble_interface && extr2.layer->layer_type == sltTopContact) {
if (! m_soluble_interface && ! m_synchronize_support_layers_with_object && extr2.layer->layer_type == sltTopContact) {
assert(extr2.layer->height == 0.);
// This is a top interface layer, which does not have a height assigned yet. Do it now.
if (m_synchronize_support_layers_with_object) {
@ -838,7 +864,7 @@ PrintObjectSupportMaterial::MyLayersPtr PrintObjectSupportMaterial::raft_and_int
// Find the
}
extr2.layer->height = step;
extr2.layer->bottom_z = extr2.layer->print_z - step;
extr2.layer->bottom_z = extr2z = extr2.layer->print_z - step;
-- n_layers_extra;
if (extr2.layer->bottom_z < this->first_layer_height()) {
// Split the span into two layers: the top layer up to the first layer height,
@ -855,8 +881,7 @@ PrintObjectSupportMaterial::MyLayersPtr PrintObjectSupportMaterial::raft_and_int
intermediate_layers.push_back(&layer_new);
continue;
}
}
if (n_layers_extra > 0 && extr1z + step < this->first_layer_height()) {
} else if (extr1z + step < this->first_layer_height()) {
MyLayer &layer_new = layer_allocate(layer_storage, stlIntermediate);
layer_new.bottom_z = extr1z;
layer_new.print_z = extr1z = this->first_layer_height();
@ -865,13 +890,22 @@ PrintObjectSupportMaterial::MyLayersPtr PrintObjectSupportMaterial::raft_and_int
dist = extr2z - extr1z;
assert(dist >= 0.);
n_layers_extra = size_t(ceil(dist / m_support_layer_height_max));
coordf_t step = dist / coordf_t(n_layers_extra);
step = dist / coordf_t(n_layers_extra);
}
for (size_t i = 0; i < n_layers_extra; ++ i) {
MyLayer &layer_new = layer_allocate(layer_storage, stlIntermediate);
layer_new.height = step;
layer_new.bottom_z = (i + 1 == n_layers_extra) ? extr2z : extr1z + i * step;
layer_new.print_z = layer_new.bottom_z + step;
if (i + 1 == n_layers_extra) {
// Last intermediate layer added. Align the last entered layer with extr2z exactly.
layer_new.bottom_z = (i == 0) ? extr1z : intermediate_layers.back()->print_z;
layer_new.print_z = extr2z;
layer_new.height = layer_new.print_z - layer_new.bottom_z;
}
else {
// Intermediate layer, not the last added.
layer_new.height = step;
layer_new.bottom_z = (i + 1 == n_layers_extra) ? extr2z : extr1z + i * step;
layer_new.print_z = layer_new.bottom_z + step;
}
intermediate_layers.push_back(&layer_new);
}
}
@ -909,9 +943,9 @@ void PrintObjectSupportMaterial::generate_base_layers(
// Find a top_contact layer touching the layer_intermediate from above, if any, and collect its polygons into polygons_new.
while (idx_top_contact_above >= 0 && top_contacts[idx_top_contact_above]->bottom_z > layer_intermediate.print_z + EPSILON)
-- idx_top_contact_above;
if (idx_top_contact_above >= 0 && top_contacts[idx_top_contact_above]->print_z > layer_intermediate.print_z)
polygons_append(polygons_new, top_contacts[idx_top_contact_above]->polygons);
if (idx_top_contact_above >= 0 && idx_top_contact_above + 1 < top_contacts.size() && top_contacts[idx_top_contact_above + 1]->print_z > layer_intermediate.print_z)
polygons_append(polygons_new, top_contacts[idx_top_contact_above + 1]->polygons);
// Add polygons from the intermediate layer above.
if (idx_intermediate + 1 < int(intermediate_layers.size()))
polygons_append(polygons_new, intermediate_layers[idx_intermediate+1]->polygons);
@ -1073,7 +1107,7 @@ PrintObjectSupportMaterial::MyLayersPtr PrintObjectSupportMaterial::generate_int
MyLayersPtr interface_layers;
// Contact layer is considered an interface layer, therefore run the following block only if support_material_interface_layers > 1.
if (! intermediate_layers.empty() && m_object_config->support_material_interface_layers > 1) {
if (! intermediate_layers.empty() && m_object_config->support_material_interface_layers.value > 1) {
// Index of the first top contact layer intersecting the current intermediate layer.
size_t idx_top_contact_first = 0;
// Index of the first bottom contact layer intersecting the current intermediate layer.
@ -1132,6 +1166,182 @@ PrintObjectSupportMaterial::MyLayersPtr PrintObjectSupportMaterial::generate_int
return interface_layers;
}
static inline void fill_expolygons_generate_paths(
ExtrusionEntitiesPtr &dst,
const ExPolygons &expolygons,
Fill *filler,
float density,
ExtrusionRole role,
const Flow &flow)
{
FillParams fill_params;
fill_params.density = density;
fill_params.complete = true;
for (ExPolygons::const_iterator it_expolygon = expolygons.begin(); it_expolygon != expolygons.end(); ++ it_expolygon) {
Surface surface(stInternal, *it_expolygon);
extrusion_entities_append_paths(
dst,
filler->fill_surface(&surface, fill_params),
role,
flow.mm3_per_mm(), flow.width, flow.height);
}
}
static inline void fill_expolygons_generate_paths(
ExtrusionEntitiesPtr &dst,
ExPolygons &&expolygons,
Fill *filler,
float density,
ExtrusionRole role,
const Flow &flow)
{
FillParams fill_params;
fill_params.density = density;
fill_params.complete = true;
for (ExPolygons::iterator it_expolygon = expolygons.begin(); it_expolygon != expolygons.end(); ++ it_expolygon) {
Surface surface(stInternal, std::move(*it_expolygon));
extrusion_entities_append_paths(
dst,
filler->fill_surface(&surface, fill_params),
role,
flow.mm3_per_mm(), flow.width, flow.height);
}
}
// Support layers, partially processed.
struct MyLayerExtruded
{
MyLayerExtruded() : layer(nullptr) {}
bool empty() const {
return layer == nullptr || layer->polygons.empty();
}
bool could_merge(const MyLayerExtruded &other) const {
return ! this->empty() && ! other.empty() &&
this->layer->height == other.layer->height &&
this->layer->bridging == other.layer->bridging;
}
void merge(MyLayerExtruded &&other) {
assert(could_merge(other));
Slic3r::polygons_append(layer->polygons, std::move(other.layer->polygons));
other.layer->polygons.clear();
}
void polygons_append(Polygons &dst) const {
if (layer != NULL && ! layer->polygons.empty())
Slic3r::polygons_append(dst, layer->polygons);
}
// The source layer. It carries the height and extrusion type (bridging / non bridging, extrusion height).
PrintObjectSupportMaterial::MyLayer *layer;
// Collect extrusions. They will be exported sorted by the bottom height.
ExtrusionEntitiesPtr extrusions;
};
typedef std::vector<MyLayerExtruded*> MyLayerExtrudedPtrs;
struct LoopInterfaceProcessor
{
LoopInterfaceProcessor(coordf_t circle_r) :
n_contact_loops(1),
circle_radius(circle_r),
circle_distance(circle_r * 3.)
{
// Shape of the top contact area.
circle.points.reserve(6);
for (size_t i = 0; i < 6; ++ i) {
double angle = double(i) * M_PI / 3.;
circle.points.push_back(Point(circle_radius * cos(angle), circle_radius * sin(angle)));
}
}
// Generate loop contacts at the top_contact_layer,
// trim the top_contact_layer->polygons with the areas covered by the loops.
void generate(MyLayerExtruded &top_contact_layer, const Flow &interface_flow_src);
int n_contact_loops;
coordf_t circle_radius;
coordf_t circle_distance;
Polygon circle;
};
void LoopInterfaceProcessor::generate(MyLayerExtruded &top_contact_layer, const Flow &interface_flow_src)
{
if (n_contact_loops == 0 || top_contact_layer.empty())
return;
Flow flow = interface_flow_src;
flow.height = float(top_contact_layer.layer->height);
Polygons overhang_polygons;
if (top_contact_layer.layer->aux_polygons != nullptr)
overhang_polygons = std::move(*top_contact_layer.layer->aux_polygons);
// Generate the outermost loop.
// Find centerline of the external loop (or any other kind of extrusions should the loop be skipped)
Polygons top_contact_polygons = offset(top_contact_layer.layer->polygons, - 0.5f * flow.scaled_width());
Polygons loops0;
{
// find centerline of the external loop of the contours
// only consider the loops facing the overhang
Polygons external_loops;
// Positions of the loop centers.
Polygons circles;
Polygons overhang_with_margin = offset(overhang_polygons, 0.5f * flow.scaled_width());
for (Polygons::const_iterator it_contact = top_contact_polygons.begin(); it_contact != top_contact_polygons.end(); ++ it_contact) {
Polylines tmp;
tmp.push_back(it_contact->split_at_first_point());
if (! intersection(tmp, overhang_with_margin).empty()) {
external_loops.push_back(*it_contact);
Points positions_new = it_contact->equally_spaced_points(circle_distance);
for (Points::const_iterator it_center = positions_new.begin(); it_center != positions_new.end(); ++ it_center) {
circles.push_back(circle);
Polygon &circle_new = circles.back();
for (size_t i = 0; i < circle_new.points.size(); ++ i)
circle_new.points[i].translate(*it_center);
}
}
}
// Apply a pattern to the loop.
loops0 = diff(external_loops, circles);
}
Polylines loop_lines;
{
// make more loops
Polygons loop_polygons = loops0;
for (size_t i = 1; i < n_contact_loops; ++ i)
polygons_append(loop_polygons,
offset2(
loops0,
- int(i) * flow.scaled_spacing() - 0.5f * flow.scaled_spacing(),
0.5f * flow.scaled_spacing()));
// clip such loops to the side oriented towards the object
loop_lines.reserve(loop_polygons.size());
for (Polygons::const_iterator it = loop_polygons.begin(); it != loop_polygons.end(); ++ it)
loop_lines.push_back(it->split_at_first_point());
loop_lines = intersection(loop_lines, offset(overhang_polygons, scale_(SUPPORT_MATERIAL_MARGIN)));
}
// add the contact infill area to the interface area
// note that growing loops by $circle_radius ensures no tiny
// extrusions are left inside the circles; however it creates
// a very large gap between loops and contact_infill_polygons, so maybe another
// solution should be found to achieve both goals
Polygons thick_loop_lines;
offset(loop_lines, &thick_loop_lines, float(circle_radius * 1.1));
top_contact_layer.layer->polygons = diff(top_contact_layer.layer->polygons, std::move(thick_loop_lines));
// Transform loops into ExtrusionPath objects.
extrusion_entities_append_paths(
top_contact_layer.extrusions,
STDMOVE(loop_lines),
erSupportMaterialInterface, flow.mm3_per_mm(), flow.width, flow.height);
}
void PrintObjectSupportMaterial::generate_toolpaths(
const PrintObject &object,
const Polygons &raft,
@ -1140,18 +1350,9 @@ void PrintObjectSupportMaterial::generate_toolpaths(
const MyLayersPtr &intermediate_layers,
const MyLayersPtr &interface_layers) const
{
// Shape of the top contact area.
int n_contact_loops = 1;
coordf_t circle_radius = 1.5 * m_support_material_interface_flow.scaled_width();
coordf_t circle_distance = 3. * circle_radius;
Polygon circle;
circle.points.reserve(6);
for (size_t i = 0; i < 6; ++ i) {
double angle = double(i) * M_PI / 3.;
circle.points.push_back(Point(circle_radius * cos(angle), circle_radius * sin(angle)));
}
// Slic3r::debugf "Generating patterns\n";
// loop_interface_processor with a given circle radius.
LoopInterfaceProcessor loop_interface_processor(1.5 * m_support_material_interface_flow.scaled_width());
// Prepare fillers.
SupportMaterialPattern support_pattern = m_object_config->support_material_pattern;
@ -1171,13 +1372,8 @@ void PrintObjectSupportMaterial::generate_toolpaths(
infill_pattern = ipHoneycomb;
break;
}
#if SLIC3R_CPPVER >= 11
std::unique_ptr<Fill> filler_interface = std::unique_ptr<Fill>(Fill::new_from_type(ipRectilinear));
std::unique_ptr<Fill> filler_support = std::unique_ptr<Fill>(Fill::new_from_type(infill_pattern));
#else
std::auto_ptr<Fill> filler_interface = std::auto_ptr<Fill>(Fill::new_from_type(ipRectilinear));
std::auto_ptr<Fill> filler_support = std::auto_ptr<Fill>(Fill::new_from_type(infill_pattern));
#endif
{
BoundingBox bbox_object = object.bounding_box();
filler_interface->set_bounding_box(bbox_object);
@ -1186,9 +1382,9 @@ void PrintObjectSupportMaterial::generate_toolpaths(
coordf_t interface_angle = m_object_config->support_material_angle + 90.;
coordf_t interface_spacing = m_object_config->support_material_interface_spacing.value + m_support_material_interface_flow.spacing();
coordf_t interface_density = (interface_spacing == 0.) ? 1. : (m_support_material_interface_flow.spacing() / interface_spacing);
coordf_t interface_density = std::min(1., m_support_material_interface_flow.spacing() / interface_spacing);
coordf_t support_spacing = m_object_config->support_material_spacing.value + m_support_material_flow.spacing();
coordf_t support_density = (support_spacing == 0.) ? 1. : (m_support_material_flow.spacing() / support_spacing);
coordf_t support_density = std::min(1., m_support_material_flow.spacing() / support_spacing);
//FIXME Parallelize the support generator:
/*
@ -1216,10 +1412,11 @@ void PrintObjectSupportMaterial::generate_toolpaths(
SupportLayer &support_layer = *object.support_layers[support_layer_id];
// Find polygons with the same print_z.
Polygons bottom_contact_polygons;
Polygons top_contact_polygons;
Polygons base_polygons;
Polygons interface_polygons;
MyLayerExtruded bottom_contact_layer;
MyLayerExtruded top_contact_layer;
MyLayerExtruded base_layer;
MyLayerExtruded interface_layer;
MyLayerExtrudedPtrs mylayers;
// Increment the layer indices to find a layer at support_layer.print_z.
for (; idx_layer_bottom_contact < bottom_contacts .size() && bottom_contacts [idx_layer_bottom_contact]->print_z < support_layer.print_z - EPSILON; ++ idx_layer_bottom_contact) ;
@ -1227,321 +1424,163 @@ void PrintObjectSupportMaterial::generate_toolpaths(
for (; idx_layer_intermediate < intermediate_layers.size() && intermediate_layers[idx_layer_intermediate ]->print_z < support_layer.print_z - EPSILON; ++ idx_layer_intermediate ) ;
for (; idx_layer_inteface < interface_layers .size() && interface_layers [idx_layer_inteface ]->print_z < support_layer.print_z - EPSILON; ++ idx_layer_inteface ) ;
// Copy polygons from the layers.
if (idx_layer_bottom_contact < bottom_contacts.size() && bottom_contacts[idx_layer_bottom_contact]->print_z < support_layer.print_z + EPSILON)
bottom_contact_polygons = bottom_contacts[idx_layer_bottom_contact]->polygons;
if (idx_layer_top_contact < top_contacts.size() && top_contacts[idx_layer_top_contact]->print_z < support_layer.print_z + EPSILON)
top_contact_polygons = top_contacts[idx_layer_top_contact]->polygons;
if (idx_layer_inteface < interface_layers.size() && interface_layers[idx_layer_inteface]->print_z < support_layer.print_z + EPSILON)
interface_polygons = interface_layers[idx_layer_inteface]->polygons;
if (idx_layer_intermediate < intermediate_layers.size() && intermediate_layers[idx_layer_intermediate]->print_z < support_layer.print_z + EPSILON)
base_polygons = intermediate_layers[idx_layer_intermediate]->polygons;
// We redefine flows locally by applying this layer's height.
Flow flow = m_support_material_flow;
Flow interface_flow = m_support_material_interface_flow;
flow.height = support_layer.height;
interface_flow.height = support_layer.height;
/*
if (1) {
mylayers.reserve(4);
if (idx_layer_bottom_contact < bottom_contacts.size() && bottom_contacts[idx_layer_bottom_contact]->print_z < support_layer.print_z + EPSILON) {
bottom_contact_layer.layer = bottom_contacts[idx_layer_bottom_contact];
mylayers.push_back(&bottom_contact_layer);
}
if (idx_layer_top_contact < top_contacts.size() && top_contacts[idx_layer_top_contact]->print_z < support_layer.print_z + EPSILON) {
top_contact_layer.layer = top_contacts[idx_layer_top_contact];
mylayers.push_back(&top_contact_layer);
}
if (idx_layer_inteface < interface_layers.size() && interface_layers[idx_layer_inteface]->print_z < support_layer.print_z + EPSILON) {
interface_layer.layer = interface_layers[idx_layer_inteface];
mylayers.push_back(&interface_layer);
}
if (idx_layer_intermediate < intermediate_layers.size() && intermediate_layers[idx_layer_intermediate]->print_z < support_layer.print_z + EPSILON) {
base_layer.layer = intermediate_layers[idx_layer_intermediate];
mylayers.push_back(&base_layer);
}
// Sort the layers with the same print_z coordinate by their heights, thickest first.
std::sort(mylayers.begin(), mylayers.end(), [](const MyLayerExtruded *p1, const MyLayerExtruded *p2) { return p1->layer->height > p2->layer->height; });
/* {
require "Slic3r/SVG.pm";
Slic3r::SVG::output("out\\layer_" . $z . ".svg",
blue_expolygons => union_ex($base),
red_expolygons => union_ex($contact),
green_expolygons => union_ex($interface),
);
}
*/
} */
// Store inslands, over which the retract will be disabled.
{
Polygons polys(bottom_contact_polygons);
polygons_append(polys, interface_polygons);
polygons_append(polys, base_polygons);
polygons_append(polys, top_contact_polygons);
ExPolygons islands = union_ex(polys);
support_layer.support_islands.expolygons.insert(support_layer.support_islands.expolygons.end(), islands.begin(), islands.end());
if (m_object_config->support_material_interface_layers == 0) {
// If no interface layers were requested, we treat the contact layer exactly as a generic base layer.
if (base_layer.could_merge(top_contact_layer))
base_layer.merge(std::move(top_contact_layer));
} else {
loop_interface_processor.generate(top_contact_layer, m_support_material_interface_flow);
// If no loops are allowed, we treat the contact layer exactly as a generic interface layer.
if (interface_layer.could_merge(top_contact_layer))
interface_layer.merge(std::move(top_contact_layer));
}
Polygons contact_infill_polygons;
if (! top_contact_polygons.empty())
{
// Having a top interface layer.
if (m_object_config->support_material_interface_layers == 0)
// If no interface layers were requested, we treat the contact layer exactly as a generic base layer.
polygons_append(base_polygons, top_contact_polygons);
else if (n_contact_loops == 0)
// If no loops are allowed, we treat the contact layer exactly as a generic interface layer.
polygons_append(interface_polygons, top_contact_polygons);
else if (! top_contact_polygons.empty())
{
// Create loop paths and
Polygons overhang_polygons = (top_contacts[idx_layer_top_contact]->aux_polygons == NULL) ?
Polygons() :
*top_contacts[idx_layer_top_contact]->aux_polygons;
// Generate the outermost loop.
// Find centerline of the external loop (or any other kind of extrusions should the loop be skipped)
top_contact_polygons = offset(top_contact_polygons, - 0.5 * interface_flow.scaled_width());
Polygons loops0;
{
// find centerline of the external loop of the contours
// only consider the loops facing the overhang
Polygons external_loops;
// Positions of the loop centers.
Polygons circles;
{
Polygons overhang_with_margin = offset(overhang_polygons, 0.5 * interface_flow.scaled_width());
for (Polygons::const_iterator it_contact = top_contact_polygons.begin(); it_contact != top_contact_polygons.end(); ++ it_contact) {
Polylines tmp;
tmp.push_back(it_contact->split_at_first_point());
if (! intersection(tmp, overhang_with_margin).empty()) {
external_loops.push_back(*it_contact);
Points positions_new = it_contact->equally_spaced_points(circle_distance);
for (Points::const_iterator it_center = positions_new.begin(); it_center != positions_new.end(); ++ it_center) {
circles.push_back(circle);
Polygon &circle_new = circles.back();
for (size_t i = 0; i < circle_new.points.size(); ++ i)
circle_new.points[i].translate(*it_center);
}
}
}
}
// Apply a pattern to the loop.
loops0 = diff(external_loops, circles);
}
Polylines loop_lines;
{
// make more loops
Polygons loop_polygons = loops0;
for (size_t i = 1; i < n_contact_loops; ++ i)
polygons_append(loop_polygons,
offset2(
loops0,
- int(i) * interface_flow.scaled_spacing() - 0.5 * interface_flow.scaled_spacing(),
0.5 * interface_flow.scaled_spacing()));
// clip such loops to the side oriented towards the object
loop_lines.reserve(loop_polygons.size());
for (Polygons::const_iterator it = loop_polygons.begin(); it != loop_polygons.end(); ++ it)
loop_lines.push_back(it->split_at_first_point());
loop_lines = intersection(loop_lines, offset(overhang_polygons, scale_(SUPPORT_MATERIAL_MARGIN)));
}
// add the contact infill area to the interface area
// note that growing loops by $circle_radius ensures no tiny
// extrusions are left inside the circles; however it creates
// a very large gap between loops and contact_infill_polygons, so maybe another
// solution should be found to achieve both goals
{
Polygons loop_polygons;
offset(loop_lines, &loop_polygons, circle_radius * 1.1);
contact_infill_polygons = diff(top_contact_polygons, loop_polygons);
}
// Transform loops into ExtrusionPath objects.
for (Polylines::const_iterator it_polyline = loop_lines.begin(); it_polyline != loop_lines.end(); ++ it_polyline) {
ExtrusionPath *extrusion_path = new ExtrusionPath(erSupportMaterialInterface);
support_layer.support_interface_fills.entities.push_back(extrusion_path);
extrusion_path->polyline = *it_polyline;
extrusion_path->mm3_per_mm = interface_flow.mm3_per_mm();
extrusion_path->width = interface_flow.width;
extrusion_path->height = support_layer.height;
}
}
if (! interface_layer.empty() && ! base_layer.empty()) {
// turn base support into interface when it's contained in our holes
// (this way we get wider interface anchoring)
Polygons islands = top_level_islands(interface_layer.layer->polygons);
base_layer.layer->polygons = diff(base_layer.layer->polygons, islands);
polygons_append(interface_layer.layer->polygons, intersection(base_layer.layer->polygons, islands));
}
// interface and contact infill
if (! interface_polygons.empty() || ! contact_infill_polygons.empty()) {
if (! interface_layer.empty()) {
//FIXME When paralellizing, each thread shall have its own copy of the fillers.
Flow interface_flow(
interface_layer.layer->bridging ? interface_layer.layer->height : m_support_material_interface_flow.width,
interface_layer.layer->height,
m_support_material_interface_flow.nozzle_diameter,
interface_layer.layer->bridging);
filler_interface->angle = interface_angle;
filler_interface->spacing = m_support_material_interface_flow.spacing();
fill_expolygons_generate_paths(
// Destination
support_layer.support_fills.entities,
// Regions to fill
union_ex(interface_layer.layer->polygons, true),
// Filler and its parameters
filler_interface.get(), interface_density,
// Extrusion parameters
erSupportMaterialInterface, interface_flow);
}
// support or flange
if (! base_layer.empty()) {
//FIXME When paralellizing, each thread shall have its own copy of the fillers.
Fill *filler = filler_support.get();
filler->angle = angles[support_layer_id % angles.size()];
// We don't use $base_flow->spacing because we need a constant spacing
// value that guarantees that all layers are correctly aligned.
Flow flow(m_support_material_flow.width, base_layer.layer->height, m_support_material_flow.nozzle_diameter, base_layer.layer->bridging);
filler->spacing = flow.spacing();
float density = support_density;
// find centerline of the external loop/extrusions
ExPolygons to_infill = (support_layer_id == 0 || ! with_sheath) ?
// union_ex(base_polygons, true) :
offset2_ex(base_layer.layer->polygons, SCALED_EPSILON, - SCALED_EPSILON) :
offset2_ex(base_layer.layer->polygons, SCALED_EPSILON, - SCALED_EPSILON - 0.5*flow.scaled_width());
/* {
require "Slic3r/SVG.pm";
Slic3r::SVG::output("out\\to_infill_base" . $z . ".svg",
red_expolygons => union_ex($contact),
green_expolygons => union_ex($interface),
blue_expolygons => $to_infill,
);
} */
if (support_layer_id == 0) {
// Base flange.
filler = filler_interface.get();
filler->angle = m_object_config->support_material_angle + 90.;
density = 0.5f;
flow = m_first_layer_flow;
// use the proper spacing for first layer as we don't need to align
// its pattern to the other layers
//FIXME When paralellizing, each thread shall have its own copy of the fillers.
filler->spacing = flow.spacing();
} else if (with_sheath) {
// Draw a perimeter all around the support infill. This makes the support stable, but difficult to remove.
// TODO: use brim ordering algorithm
Polygons to_infill_polygons = to_polygons(to_infill);
// TODO: use offset2_ex()
to_infill = offset_ex(to_infill_polygons, - flow.scaled_spacing());
extrusion_entities_append_paths(
support_layer.support_fills.entities,
to_polylines(STDMOVE(to_infill_polygons)),
erSupportMaterial, flow.mm3_per_mm(), flow.width, flow.height);
}
fill_expolygons_generate_paths(
// Destination
support_layer.support_fills.entities,
// Regions to fill
STDMOVE(to_infill),
// Filler and its parameters
filler, density,
// Extrusion parameters
erSupportMaterial, flow);
}
// support or flange
if (! bottom_contact_layer.empty()) {
//FIXME When paralellizing, each thread shall have its own copy of the fillers.
Flow interface_flow(
bottom_contact_layer.layer->bridging ? bottom_contact_layer.layer->height : m_support_material_interface_flow.width,
bottom_contact_layer.layer->height,
m_support_material_interface_flow.nozzle_diameter,
bottom_contact_layer.layer->bridging);
filler_interface->angle = interface_angle;
filler_interface->spacing = interface_flow.spacing();
// find centerline of the external loop
interface_polygons = offset2(interface_polygons, SCALED_EPSILON, - SCALED_EPSILON - 0.5 * interface_flow.scaled_width());
// join regions by offsetting them to ensure they're merged
polygons_append(interface_polygons, contact_infill_polygons);
interface_polygons = offset(interface_polygons, SCALED_EPSILON);
// turn base support into interface when it's contained in our holes
// (this way we get wider interface anchoring)
{
Polygons interface_polygons_new;
interface_polygons_new.reserve(interface_polygons.size());
for (Polygons::iterator it_polygon = interface_polygons.begin(); it_polygon != interface_polygons.end(); ++ it_polygon) {
if (it_polygon->is_clockwise()) {
Polygons hole;
hole.push_back(*it_polygon);
hole.back().make_counter_clockwise();
if (diff(hole, base_polygons, true).empty())
continue;
}
interface_polygons_new.push_back(Polygon());
interface_polygons_new.back().points.swap(it_polygon->points);
}
interface_polygons.swap(interface_polygons_new);
}
base_polygons = diff(base_polygons, interface_polygons);
ExPolygons to_fill = union_ex(interface_polygons);
for (ExPolygons::const_iterator it_expolygon = to_fill.begin(); it_expolygon != to_fill.end(); ++ it_expolygon) {
Surface surface(stInternal, *it_expolygon);
FillParams fill_params;
fill_params.density = interface_density;
fill_params.complete = true;
Polylines polylines = filler_interface->fill_surface(&surface, fill_params);
for (Polylines::const_iterator it_polyline = polylines.begin(); it_polyline != polylines.end(); ++ it_polyline) {
ExtrusionPath *extrusion_path = new ExtrusionPath(erSupportMaterialInterface);
support_layer.support_interface_fills.entities.push_back(extrusion_path);
extrusion_path->polyline = *it_polyline;
extrusion_path->mm3_per_mm = interface_flow.mm3_per_mm();
extrusion_path->width = interface_flow.width;
extrusion_path->height = support_layer.height;
}
}
}
// support or flange
if (! base_polygons.empty()) {
//FIXME When paralellizing, each thread shall have its own copy of the fillers.
Fill *filler = filler_support.get();
filler->angle = angles[support_layer_id % angles.size()];
// We don't use $base_flow->spacing because we need a constant spacing
// value that guarantees that all layers are correctly aligned.
filler->spacing = flow.spacing();
coordf_t density = support_density;
Flow base_flow = flow;
// find centerline of the external loop/extrusions
ExPolygons to_infill = offset2_ex(base_polygons, SCALED_EPSILON, - SCALED_EPSILON - 0.5*flow.scaled_width());
/*
if (1) {
require "Slic3r/SVG.pm";
Slic3r::SVG::output("out\\to_infill_base" . $z . ".svg",
red_expolygons => union_ex($contact),
green_expolygons => union_ex($interface),
blue_expolygons => $to_infill,
);
}
*/
if (support_layer_id == 0) {
// Base flange.
filler = filler_interface.get();
filler->angle = m_object_config->support_material_angle + 90.;
density = 0.5;
base_flow = m_first_layer_flow;
// use the proper spacing for first layer as we don't need to align
// its pattern to the other layers
//FIXME When paralellizing, each thread shall have its own copy of the fillers.
filler->spacing = base_flow.spacing();
} else if (with_sheath) {
// Draw a perimeter all around the support infill. This makes the support stable, but difficult to remove.
// TODO: use brim ordering algorithm
Polygons to_infill_polygons = to_polygons(to_infill);
for (Polygons::const_iterator it_polyline = to_infill_polygons.begin(); it_polyline != to_infill_polygons.end(); ++ it_polyline) {
ExtrusionPath *extrusion_path = new ExtrusionPath(erSupportMaterial);
support_layer.support_fills.entities.push_back(extrusion_path);
extrusion_path->polyline = *it_polyline;
extrusion_path->mm3_per_mm = flow.mm3_per_mm();
extrusion_path->width = flow.width;
extrusion_path->height = support_layer.height;
}
// TODO: use offset2_ex()
to_infill = offset_ex(to_infill_polygons, - flow.scaled_spacing());
}
for (ExPolygons::const_iterator it_expolygon = to_infill.begin(); it_expolygon != to_infill.end(); ++ it_expolygon) {
Surface surface(stInternal, *it_expolygon);
FillParams fill_params;
fill_params.density = density;
fill_params.complete = true;
Polylines polylines = filler->fill_surface(&surface, fill_params);
for (Polylines::const_iterator it_polyline = polylines.begin(); it_polyline != polylines.end(); ++ it_polyline) {
ExtrusionPath *extrusion_path = new ExtrusionPath(erSupportMaterial);
support_layer.support_fills.entities.push_back(extrusion_path);
extrusion_path->polyline = *it_polyline;
extrusion_path->mm3_per_mm = base_flow.mm3_per_mm();
extrusion_path->width = base_flow.width;
extrusion_path->height = support_layer.height;
}
}
fill_expolygons_generate_paths(
// Destination
support_layer.support_fills.entities,
// Regions to fill
union_ex(bottom_contact_layer.layer->polygons, true),
// Filler and its parameters
filler_interface.get(), interface_density,
// Extrusion parameters
erSupportMaterial, interface_flow);
}
// support or flange
if (! bottom_contact_polygons.empty()) {
//FIXME When paralellizing, each thread shall have its own copy of the fillers.
Fill *filler = filler_support.get();
filler->angle = angles[support_layer_id % angles.size()];
// We don't use $base_flow->spacing because we need a constant spacing
// value that guarantees that all layers are correctly aligned.
filler->spacing = flow.spacing();
coordf_t density = support_density;
Flow base_flow = flow;
// find centerline of the external loop/extrusions
ExPolygons to_infill = offset2_ex(base_polygons, SCALED_EPSILON, - SCALED_EPSILON - 0.5*flow.scaled_width());
/*
if (1) {
require "Slic3r/SVG.pm";
Slic3r::SVG::output("out\\to_infill_base" . $z . ".svg",
red_expolygons => union_ex($contact),
green_expolygons => union_ex($interface),
blue_expolygons => $to_infill,
);
}
*/
if (support_layer_id == 0) {
// Base flange.
filler = filler_interface.get();
filler->angle = m_object_config->support_material_angle + 90.;
density = 0.5;
base_flow = m_first_layer_flow;
// use the proper spacing for first layer as we don't need to align
// its pattern to the other layers
//FIXME When paralellizing, each thread shall have its own copy of the fillers.
filler->spacing = base_flow.spacing();
} else if (with_sheath) {
// Draw a perimeter all around the support infill. This makes the support stable, but difficult to remove.
// TODO: use brim ordering algorithm
Polygons to_infill_polygons = to_polygons(to_infill);
for (Polygons::const_iterator it_polyline = to_infill_polygons.begin(); it_polyline != to_infill_polygons.end(); ++ it_polyline) {
ExtrusionPath *extrusion_path = new ExtrusionPath(erSupportMaterial);
support_layer.support_fills.entities.push_back(extrusion_path);
extrusion_path->polyline = *it_polyline;
extrusion_path->mm3_per_mm = flow.mm3_per_mm();
extrusion_path->width = flow.width;
extrusion_path->height = support_layer.height;
}
// TODO: use offset2_ex()
to_infill = offset_ex(to_infill_polygons, - flow.scaled_spacing());
}
for (ExPolygons::const_iterator it_expolygon = to_infill.begin(); it_expolygon != to_infill.end(); ++ it_expolygon) {
Surface surface(stInternal, *it_expolygon);
FillParams fill_params;
fill_params.density = density;
fill_params.complete = true;
Polylines polylines = filler->fill_surface(&surface, fill_params);
for (Polylines::const_iterator it_polyline = polylines.begin(); it_polyline != polylines.end(); ++ it_polyline) {
ExtrusionPath *extrusion_path = new ExtrusionPath(erSupportMaterial);
support_layer.support_fills.entities.push_back(extrusion_path);
extrusion_path->polyline = *it_polyline;
extrusion_path->mm3_per_mm = base_flow.mm3_per_mm();
extrusion_path->width = base_flow.width;
extrusion_path->height = support_layer.height;
}
}
// Collect the support areas with this print_z into islands, as there is no need
// for retraction over these islands.
Polygons polys;
// Collect the extrusions, sorted by the bottom extrusion height.
for (MyLayerExtrudedPtrs::iterator it = mylayers.begin(); it != mylayers.end(); ++ it) {
(*it)->polygons_append(polys);
std::move(std::begin((*it)->extrusions), std::end((*it)->extrusions),
std::back_inserter(support_layer.support_fills.entities));
}
/*
if (0) {
if (! polys.empty())
expolygons_append(support_layer.support_islands.expolygons, union_ex(polys));
/* {
require "Slic3r/SVG.pm";
Slic3r::SVG::output("islands_" . $z . ".svg",
red_expolygons => union_ex($contact),
@ -1549,8 +1588,7 @@ void PrintObjectSupportMaterial::generate_toolpaths(
green_polylines => [ map $_->unpack->polyline, @{$layer->support_contact_fills} ],
polylines => [ map $_->unpack->polyline, @{$layer->support_fills} ],
);
}
*/
} */
} // for each support_layer_id
}