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103 lines
3.1 KiB
C++
103 lines
3.1 KiB
C++
/**
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* In this file we will implement the automatic SLA support tree generation.
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*
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*/
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#include <numeric>
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#include <libslic3r/SLA/SupportTree.hpp>
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#include <libslic3r/SLA/SpatIndex.hpp>
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#include <libslic3r/SLA/SupportTreeBuilder.hpp>
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#include <libslic3r/SLA/SupportTreeBuildsteps.hpp>
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#include <libslic3r/MTUtils.hpp>
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#include <libslic3r/ClipperUtils.hpp>
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#include <libslic3r/Model.hpp>
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#include <libnest2d/optimizers/nlopt/genetic.hpp>
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#include <libnest2d/optimizers/nlopt/subplex.hpp>
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#include <boost/log/trivial.hpp>
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#include <tbb/parallel_for.h>
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#include <tbb/mutex.h>
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#include <tbb/spin_mutex.h>
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#include <libslic3r/I18N.hpp>
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//! macro used to mark string used at localization,
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//! return same string
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#define L(s) Slic3r::I18N::translate(s)
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namespace Slic3r {
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namespace sla {
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void SupportTree::retrieve_full_mesh(TriangleMesh &outmesh) const {
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outmesh.merge(retrieve_mesh(MeshType::Support));
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outmesh.merge(retrieve_mesh(MeshType::Pad));
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}
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std::vector<ExPolygons> SupportTree::slice(
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const std::vector<float> &grid, float cr) const
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{
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const TriangleMesh &sup_mesh = retrieve_mesh(MeshType::Support);
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const TriangleMesh &pad_mesh = retrieve_mesh(MeshType::Pad);
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using Slices = std::vector<ExPolygons>;
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auto slices = reserve_vector<Slices>(2);
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if (!sup_mesh.empty()) {
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slices.emplace_back();
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TriangleMeshSlicer sup_slicer(&sup_mesh);
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sup_slicer.slice(grid, SlicingMode::Regular, cr, &slices.back(), ctl().cancelfn);
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}
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if (!pad_mesh.empty()) {
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slices.emplace_back();
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auto bb = pad_mesh.bounding_box();
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auto maxzit = std::upper_bound(grid.begin(), grid.end(), bb.max.z());
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auto cap = grid.end() - maxzit;
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auto padgrid = reserve_vector<float>(size_t(cap > 0 ? cap : 0));
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std::copy(grid.begin(), maxzit, std::back_inserter(padgrid));
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TriangleMeshSlicer pad_slicer(&pad_mesh);
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pad_slicer.slice(padgrid, SlicingMode::Regular, cr, &slices.back(), ctl().cancelfn);
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}
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size_t len = grid.size();
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for (const Slices &slv : slices) { len = std::min(len, slv.size()); }
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// Either the support or the pad or both has to be non empty
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if (slices.empty()) return {};
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Slices &mrg = slices.front();
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for (auto it = std::next(slices.begin()); it != slices.end(); ++it) {
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for (size_t i = 0; i < len; ++i) {
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Slices &slv = *it;
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std::copy(slv[i].begin(), slv[i].end(), std::back_inserter(mrg[i]));
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slv[i] = {}; // clear and delete
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}
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}
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return mrg;
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}
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SupportTree::UPtr SupportTree::create(const SupportableMesh &sm,
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const JobController & ctl)
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{
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auto builder = make_unique<SupportTreeBuilder>();
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builder->m_ctl = ctl;
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if (sm.cfg.enabled) {
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// Execute takes care about the ground_level
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SupportTreeBuildsteps::execute(*builder, sm);
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builder->merge_and_cleanup(); // clean metadata, leave only the meshes.
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} else {
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// If a pad gets added later, it will be in the right Z level
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builder->ground_level = sm.emesh.ground_level();
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}
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return std::move(builder);
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}
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}} // namespace Slic3r::sla
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