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#include "Layer.hpp"
#include "ClipperUtils.hpp"
#include "Geometry.hpp"
#include "Print.hpp"
#include "Fill/Fill.hpp"
#include "SVG.hpp"
#include <boost/log/trivial.hpp>
namespace Slic3r {
Layer::~Layer()
{
this->lower_layer = this->upper_layer = nullptr;
for (LayerRegion *region : this->regions)
delete region;
this->regions.clear();
}
LayerRegion* Layer::add_region(PrintRegion* print_region)
{
this->regions.emplace_back(new LayerRegion(this, print_region));
return this->regions.back();
}
// merge all regions' slices to get islands
void Layer::make_slices()
{
ExPolygons slices;
if (this->regions.size() == 1) {
// optimization: if we only have one region, take its slices
slices = this->regions.front()->slices;
} else {
Polygons slices_p;
FOREACH_LAYERREGION(this, layerm) {
polygons_append(slices_p, to_polygons((*layerm)->slices));
}
slices = union_ex(slices_p);
}
this->slices.expolygons.clear();
this->slices.expolygons.reserve(slices.size());
// prepare ordering points
Points ordering_points;
ordering_points.reserve(slices.size());
for (const ExPolygon &ex : slices)
ordering_points.push_back(ex.contour.first_point());
// sort slices
std::vector<Points::size_type> order;
Slic3r::Geometry::chained_path(ordering_points, order);
// populate slices vector
for (size_t i : order)
this->slices.expolygons.push_back(STDMOVE(slices[i]));
}
void Layer::merge_slices()
{
if (this->regions.size() == 1) {
// Optimization, also more robust. Don't merge classified pieces of layerm->slices,
// but use the non-split islands of a layer. For a single region print, these shall be equal.
this->regions.front()->slices.set(this->slices.expolygons, stInternal);
} else {
FOREACH_LAYERREGION(this, layerm) {
// without safety offset, artifacts are generated (GH #2494)
(*layerm)->slices.set(union_ex(to_polygons(STDMOVE((*layerm)->slices.surfaces)), true), stInternal);
}
}
}
// Here the perimeters are created cummulatively for all layer regions sharing the same parameters influencing the perimeters.
// The perimeter paths and the thin fills (ExtrusionEntityCollection) are assigned to the first compatible layer region.
// The resulting fill surface is split back among the originating regions.
void Layer::make_perimeters()
{
BOOST_LOG_TRIVIAL(trace) << "Generating perimeters for layer " << this->id();
// keep track of regions whose perimeters we have already generated
std::set<size_t> done;
FOREACH_LAYERREGION(this, layerm) {
size_t region_id = layerm - this->regions.begin();
if (done.find(region_id) != done.end()) continue;
BOOST_LOG_TRIVIAL(trace) << "Generating perimeters for layer " << this->id() << ", region " << region_id;
done.insert(region_id);
const PrintRegionConfig &config = (*layerm)->region()->config;
// find compatible regions
LayerRegionPtrs layerms;
layerms.push_back(*layerm);
for (LayerRegionPtrs::const_iterator it = layerm + 1; it != this->regions.end(); ++it) {
LayerRegion* other_layerm = *it;
const PrintRegionConfig &other_config = other_layerm->region()->config;
if (config.perimeter_extruder == other_config.perimeter_extruder
&& config.perimeters == other_config.perimeters
&& config.perimeter_speed == other_config.perimeter_speed
&& config.external_perimeter_speed == other_config.external_perimeter_speed
&& config.gap_fill_speed == other_config.gap_fill_speed
&& config.overhangs == other_config.overhangs
&& config.serialize("perimeter_extrusion_width").compare(other_config.serialize("perimeter_extrusion_width")) == 0
&& config.thin_walls == other_config.thin_walls
&& config.external_perimeters_first == other_config.external_perimeters_first) {
layerms.push_back(other_layerm);
done.insert(it - this->regions.begin());
}
}
if (layerms.size() == 1) { // optimization
(*layerm)->fill_surfaces.surfaces.clear();
(*layerm)->make_perimeters((*layerm)->slices, &(*layerm)->fill_surfaces);
(*layerm)->fill_expolygons = to_expolygons((*layerm)->fill_surfaces.surfaces);
} else {
SurfaceCollection new_slices;
{
// group slices (surfaces) according to number of extra perimeters
std::map<unsigned short,Surfaces> slices; // extra_perimeters => [ surface, surface... ]
for (LayerRegionPtrs::iterator l = layerms.begin(); l != layerms.end(); ++l) {
for (Surfaces::iterator s = (*l)->slices.surfaces.begin(); s != (*l)->slices.surfaces.end(); ++s) {
slices[s->extra_perimeters].push_back(*s);
}
}
// merge the surfaces assigned to each group
for (std::map<unsigned short,Surfaces>::const_iterator it = slices.begin(); it != slices.end(); ++it)
new_slices.append(union_ex(it->second, true), it->second.front());
}
// make perimeters
SurfaceCollection fill_surfaces;
(*layerm)->make_perimeters(new_slices, &fill_surfaces);
// assign fill_surfaces to each layer
if (!fill_surfaces.surfaces.empty()) {
for (LayerRegionPtrs::iterator l = layerms.begin(); l != layerms.end(); ++l) {
// Separate the fill surfaces.
ExPolygons expp = intersection_ex(to_polygons(fill_surfaces), (*l)->slices);
(*l)->fill_expolygons = expp;
(*l)->fill_surfaces.set(STDMOVE(expp), fill_surfaces.surfaces.front());
}
}
}
}
BOOST_LOG_TRIVIAL(trace) << "Generating perimeters for layer " << this->id() << " - Done";
}
void Layer::make_fills()
{
#ifdef SLIC3R_DEBUG
printf("Making fills for layer " PRINTF_ZU "\n", this->id());
#endif
for (LayerRegionPtrs::iterator it_layerm = regions.begin(); it_layerm != regions.end(); ++ it_layerm) {
LayerRegion &layerm = *(*it_layerm);
layerm.fills.clear();
make_fill(layerm, layerm.fills);
#ifndef NDEBUG
for (size_t i = 0; i < layerm.fills.entities.size(); ++ i)
assert(dynamic_cast<ExtrusionEntityCollection*>(layerm.fills.entities[i]) != NULL);
#endif
}
}
void Layer::export_region_slices_to_svg(const char *path) const
{
BoundingBox bbox;
for (LayerRegionPtrs::const_iterator region = this->regions.begin(); region != this->regions.end(); ++region)
for (Surfaces::const_iterator surface = (*region)->slices.surfaces.begin(); surface != (*region)->slices.surfaces.end(); ++surface)
bbox.merge(get_extents(surface->expolygon));
Point legend_size = export_surface_type_legend_to_svg_box_size();
Point legend_pos(bbox.min.x, bbox.max.y);
bbox.merge(Point(std::max(bbox.min.x + legend_size.x, bbox.max.x), bbox.max.y + legend_size.y));
SVG svg(path, bbox);
const float transparency = 0.5f;
for (LayerRegionPtrs::const_iterator region = this->regions.begin(); region != this->regions.end(); ++region)
for (Surfaces::const_iterator surface = (*region)->slices.surfaces.begin(); surface != (*region)->slices.surfaces.end(); ++surface)
svg.draw(surface->expolygon, surface_type_to_color_name(surface->surface_type), transparency);
export_surface_type_legend_to_svg(svg, legend_pos);
svg.Close();
}
// Export to "out/LayerRegion-name-%d.svg" with an increasing index with every export.
void Layer::export_region_slices_to_svg_debug(const char *name) const
{
static size_t idx = 0;
this->export_region_slices_to_svg(debug_out_path("Layer-slices-%s-%d.svg", name, idx ++).c_str());
}
void Layer::export_region_fill_surfaces_to_svg(const char *path) const
{
BoundingBox bbox;
for (LayerRegionPtrs::const_iterator region = this->regions.begin(); region != this->regions.end(); ++region)
for (Surfaces::const_iterator surface = (*region)->fill_surfaces.surfaces.begin(); surface != (*region)->fill_surfaces.surfaces.end(); ++surface)
bbox.merge(get_extents(surface->expolygon));
Point legend_size = export_surface_type_legend_to_svg_box_size();
Point legend_pos(bbox.min.x, bbox.max.y);
bbox.merge(Point(std::max(bbox.min.x + legend_size.x, bbox.max.x), bbox.max.y + legend_size.y));
SVG svg(path, bbox);
const float transparency = 0.5f;
for (LayerRegionPtrs::const_iterator region = this->regions.begin(); region != this->regions.end(); ++region)
for (Surfaces::const_iterator surface = (*region)->fill_surfaces.surfaces.begin(); surface != (*region)->fill_surfaces.surfaces.end(); ++surface)
svg.draw(surface->expolygon, surface_type_to_color_name(surface->surface_type), transparency);
export_surface_type_legend_to_svg(svg, legend_pos);
svg.Close();
}
// Export to "out/LayerRegion-name-%d.svg" with an increasing index with every export.
void Layer::export_region_fill_surfaces_to_svg_debug(const char *name) const
{
static size_t idx = 0;
this->export_region_fill_surfaces_to_svg(debug_out_path("Layer-fill_surfaces-%s-%d.svg", name, idx ++).c_str());
}
}
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