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230dbb7394
1) Fixed a wrong offset when extracting infill lines from the octree. 2) Added a variant for testing triangle in a bounding sphere when buildind the octree. Currently not used as the box test is more tight. 3) "Bridging infill" regions are now triangulated and used to densify the octree as well to support the bridging infill correctly.
76 lines
2.6 KiB
C++
76 lines
2.6 KiB
C++
// Adaptive cubic infill was inspired by the work of @mboerwinkle
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// as implemented for Cura.
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// https://github.com/Ultimaker/CuraEngine/issues/381
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// https://github.com/Ultimaker/CuraEngine/pull/401
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//
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// Our implementation is more accurate (discretizes a bit less cubes than Cura's)
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// by splitting only such cubes which contain a triangle.
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// Our line extraction is time optimal instead of O(n^2) when connecting extracted lines,
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// and we also implemented adaptivity for supporting internal overhangs only.
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#ifndef slic3r_FillAdaptive_hpp_
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#define slic3r_FillAdaptive_hpp_
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#include "FillBase.hpp"
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struct indexed_triangle_set;
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namespace Slic3r {
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class PrintObject;
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namespace FillAdaptive
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{
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struct Octree;
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// To keep the definition of Octree opaque, we have to define a custom deleter.
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struct OctreeDeleter { void operator()(Octree *p); };
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using OctreePtr = std::unique_ptr<Octree, OctreeDeleter>;
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// Calculate line spacing for
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// 1) adaptive cubic infill
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// 2) adaptive internal support cubic infill
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// Returns zero for a particular infill type if no such infill is to be generated.
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std::pair<double, double> adaptive_fill_line_spacing(const PrintObject &print_object);
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// Rotation of the octree to stand on one of its corners.
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Eigen::Quaterniond transform_to_world();
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// Inverse roation of the above.
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Eigen::Quaterniond transform_to_octree();
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FillAdaptive::OctreePtr build_octree(
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// Mesh is rotated to the coordinate system of the octree.
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const indexed_triangle_set &triangle_mesh,
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// Overhang triangles extracted from fill surfaces with stInternalBridge type,
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// rotated to the coordinate system of the octree.
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const std::vector<Vec3d> &overhang_triangles,
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coordf_t line_spacing,
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// If true, octree is densified below internal overhangs only.
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bool support_overhangs_only);
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//
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// Some of the algorithms used by class FillAdaptive were inspired by
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// Cura Engine's class SubDivCube
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// https://github.com/Ultimaker/CuraEngine/blob/master/src/infill/SubDivCube.h
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//
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class Filler : public Slic3r::Fill
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{
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public:
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virtual ~Filler() {}
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protected:
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virtual Fill* clone() const { return new Filler(*this); };
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virtual void _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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virtual bool no_sort() const { return true; }
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};
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}; // namespace FillAdaptive
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} // namespace Slic3r
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#endif // slic3r_FillAdaptive_hpp_
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