a6ea01a23f
Added UNUSED macro to libslic3r.h, used it to reduce some compile warnings. Split the Int128 class from Clipper library to a separate file, extended Int128 with intrinsic types wherever possible for performance, added new geometric predicates. Added a draft of new FillRectilinear3, which should reduce overfill near the perimeters in the future.
64 lines
2.4 KiB
C++
64 lines
2.4 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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void FillConcentric::_fill_surface_single(
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const FillParams ¶ms,
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unsigned int thickness_layers,
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const std::pair<float, Point> &direction,
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ExPolygon &expolygon,
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Polylines &polylines_out)
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{
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// no rotation is supported for this infill pattern
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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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loops = union_pt_chained(loops, false);
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// split paths using a nearest neighbor search
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size_t iPathFirst = polylines_out.size();
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Point last_pos(0, 0);
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for (const Polygon &loop : loops) {
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polylines_out.push_back(loop.split_at_index(last_pos.nearest_point_index(loop)));
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last_pos = polylines_out.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 = iPathFirst;
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for (size_t i = iPathFirst; i < polylines_out.size(); ++ i) {
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polylines_out[i].clip_end(this->loop_clipping);
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if (polylines_out[i].is_valid()) {
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if (j < i)
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polylines_out[j] = std::move(polylines_out[i]);
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++ j;
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}
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}
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if (j < polylines_out.size())
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polylines_out.erase(polylines_out.begin() + j, polylines_out.end());
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//TODO: return ExtrusionLoop objects to get better chained paths,
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// otherwise the outermost loop starts at the closest point to (0, 0).
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// We want the loops to be split inside the G-code generator to get optimum path planning.
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}
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} // namespace Slic3r
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