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be3e4caf1d
While reimplementing the FillPlanePath code, the octagon infill was fixed to extrude the right amount of material.
60 lines
2 KiB
C++
60 lines
2 KiB
C++
#include "../ClipperUtils.hpp"
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#include "../ExPolygon.hpp"
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#include "../Surface.hpp"
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#include "FillConcentric.hpp"
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namespace Slic3r {
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Polylines FillConcentric::fill_surface(const Surface *surface, const FillParams ¶ms)
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{
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// no rotation is supported for this infill pattern
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ExPolygon expolygon = surface->expolygon;
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BoundingBox bounding_box = expolygon.contour.bounding_box();
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coord_t min_spacing = scale_(this->spacing);
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coord_t distance = coord_t(min_spacing / params.density);
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if (params.density > 0.9999f && !params.dont_adjust) {
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distance = this->adjust_solid_spacing(bounding_box.size().x, distance);
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this->spacing = unscale(distance);
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}
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Polygons loops = (Polygons)expolygon;
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Polygons last = loops;
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while (! last.empty()) {
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last = offset2(last, -(distance + min_spacing/2), +min_spacing/2);
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loops.insert(loops.end(), last.begin(), last.end());
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}
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// generate paths from the outermost to the innermost, to avoid
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// adhesion problems of the first central tiny loops
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union_pt_chained(loops, &loops, false);
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// split paths using a nearest neighbor search
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Polylines paths;
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Point last_pos(0, 0);
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for (Polygons::const_iterator it_loop = loops.begin(); it_loop != loops.end(); ++ it_loop) {
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paths.push_back(it_loop->split_at_index(last_pos.nearest_point_index(*it_loop)));
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last_pos = paths.back().last_point();
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}
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// clip the paths to prevent the extruder from getting exactly on the first point of the loop
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// Keep valid paths only.
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size_t j = 0;
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for (size_t i = 0; i < paths.size(); ++ i) {
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paths[i].clip_end(this->loop_clipping);
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if (paths[i].is_valid()) {
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if (j < i)
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std::swap(paths[j], paths[i]);
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++ j;
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}
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}
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if (j < paths.size())
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paths.erase(paths.begin() + j, paths.end());
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// TODO: return ExtrusionLoop objects to get better chained paths
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return paths;
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}
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} // namespace Slic3r
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