93 lines
3.3 KiB
C++
93 lines
3.3 KiB
C++
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#ifndef MODELTOCSGMESH_HPP
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#define MODELTOCSGMESH_HPP
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#include "CSGMesh.hpp"
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#include "libslic3r/Model.hpp"
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#include "libslic3r/SLA/Hollowing.hpp"
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#include "libslic3r/MeshSplitImpl.hpp"
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namespace Slic3r { namespace csg {
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// Flags to select which parts to export from Model into a csg part collection.
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// These flags can be chained with the | operator
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enum ModelParts {
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mpartsPositive = 1, // Include positive parts
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mpartsNegative = 2, // Include negative parts
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mpartsDrillHoles = 4, // Include drill holes
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mpartsDoSplits = 8, // Split each splitable mesh and export as a union of csg parts
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};
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template<class OutIt>
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bool model_to_csgmesh(const ModelObject &mo,
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const Transform3d &trafo, // Applies to all exported parts
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OutIt out, // Output iterator
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// values of ModelParts OR-ed
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int parts_to_include = mpartsPositive
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)
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{
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bool do_positives = parts_to_include & mpartsPositive;
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bool do_negatives = parts_to_include & mpartsNegative;
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bool do_drillholes = parts_to_include & mpartsDrillHoles;
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bool do_splits = parts_to_include & mpartsDoSplits;
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bool has_splitable_volume = false;
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for (const ModelVolume *vol : mo.volumes) {
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if (vol && vol->mesh_ptr() &&
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((do_positives && vol->is_model_part()) ||
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(do_negatives && vol->is_negative_volume()))) {
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if (do_splits && its_is_splittable(vol->mesh().its)) {
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CSGPart part_begin{{}, vol->is_model_part() ? CSGType::Union : CSGType::Difference};
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part_begin.stack_operation = CSGStackOp::Push;
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*out = std::move(part_begin);
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++out;
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its_split(vol->mesh().its, SplitOutputFn{[&out, &vol, &trafo](indexed_triangle_set &&its) {
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if (its.empty())
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return;
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CSGPart part{std::make_unique<indexed_triangle_set>(std::move(its)),
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CSGType::Union,
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(trafo * vol->get_matrix()).cast<float>()};
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*out = std::move(part);
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++out;
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}});
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CSGPart part_end{{}};
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part_end.stack_operation = CSGStackOp::Pop;
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*out = std::move(part_end);
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++out;
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has_splitable_volume = true;
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} else {
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CSGPart part{&(vol->mesh().its),
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vol->is_model_part() ? CSGType::Union : CSGType::Difference,
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(trafo * vol->get_matrix()).cast<float>()};
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part.name = vol->name;
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*out = std::move(part);
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++out;
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}
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}
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}
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//if (do_drillholes) {
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// sla::DrainHoles drainholes = sla::transformed_drainhole_points(mo, trafo);
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// for (const sla::DrainHole &dhole : drainholes) {
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// CSGPart part{std::make_unique<const indexed_triangle_set>(
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// dhole.to_mesh()),
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// CSGType::Difference};
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// *out = std::move(part);
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// ++out;
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// }
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//}
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return has_splitable_volume;
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}
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}} // namespace Slic3r::csg
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#endif // MODELTOCSGMESH_HPP
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