SLA automatic support points: Added cancellation points.
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3 changed files with 21 additions and 4 deletions
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@ -13,8 +13,9 @@
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namespace Slic3r {
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SLAAutoSupports::SLAAutoSupports(const TriangleMesh& mesh, const sla::EigenMesh3D& emesh, const std::vector<ExPolygons>& slices, const std::vector<float>& heights, const Config& config)
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: m_config(config), m_V(emesh.V), m_F(emesh.F)
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SLAAutoSupports::SLAAutoSupports(const TriangleMesh& mesh, const sla::EigenMesh3D& emesh, const std::vector<ExPolygons>& slices, const std::vector<float>& heights,
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const Config& config, std::function<void(void)> throw_on_cancel)
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: m_config(config), m_V(emesh.V), m_F(emesh.F), m_throw_on_cancel(throw_on_cancel)
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{
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// FIXME: It might be safer to get rid of the rand() calls altogether, because it is probably
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// not always thread-safe and can be slow if it is.
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@ -28,8 +29,10 @@ SLAAutoSupports::SLAAutoSupports(const TriangleMesh& mesh, const sla::EigenMesh3
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// Uniformly cover each of the islands with support points.
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for (const auto& island : islands) {
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std::vector<Vec3d> points = uniformly_cover(island);
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m_throw_on_cancel();
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project_upward_onto_mesh(points);
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m_output.insert(m_output.end(), points.begin(), points.end());
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m_throw_on_cancel();
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}
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// We are done with the islands. Let's sprinkle the rest of the mesh.
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@ -111,7 +114,14 @@ void SLAAutoSupports::sprinkle_mesh(const TriangleMesh& mesh)
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// Angle at which the density reaches zero:
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const float threshold_angle = std::min(M_PI_2, M_PI_4 * acos(0.f/m_config.density_at_horizontal) / acos(m_config.density_at_45/m_config.density_at_horizontal));
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size_t cancel_test_cntr = 0;
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while (refused_points < refused_limit) {
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if (++ cancel_test_cntr == 500) {
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// Don't call the cancellation routine too often as the multi-core cache synchronization
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// may be pretty expensive.
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m_throw_on_cancel();
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cancel_test_cntr = 0;
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}
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// Place a random point on the mesh and calculate corresponding facet's normal:
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Eigen::VectorXi FI;
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Eigen::MatrixXd B;
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@ -249,6 +259,7 @@ std::vector<std::pair<ExPolygon, coord_t>> SLAAutoSupports::find_islands(const s
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//if (!islands.empty())
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// output_expolygons(islands, "islands" + layer_num_str + ".svg");
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#endif /* SLA_AUTOSUPPORTS_DEBUG */
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m_throw_on_cancel();
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}
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return islands;
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@ -17,7 +17,8 @@ public:
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float minimal_z;
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};
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SLAAutoSupports(const TriangleMesh& mesh, const sla::EigenMesh3D& emesh, const std::vector<ExPolygons>& slices, const std::vector<float>& heights, const Config& config);
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SLAAutoSupports(const TriangleMesh& mesh, const sla::EigenMesh3D& emesh, const std::vector<ExPolygons>& slices,
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const std::vector<float>& heights, const Config& config, std::function<void(void)> throw_on_cancel);
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const std::vector<Vec3d>& output() { return m_output; }
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private:
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@ -38,6 +39,7 @@ private:
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#endif /* SLA_AUTOSUPPORTS_DEBUG */
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SLAAutoSupports::Config m_config;
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std::function<void(void)> m_throw_on_cancel;
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const Eigen::MatrixXd& m_V;
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const Eigen::MatrixXi& m_F;
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};
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@ -514,6 +514,7 @@ void SLAPrint::process()
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float(po.get_elevation()),
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ilh, float(lh));
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this->throw_if_canceled();
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SLAAutoSupports::Config config;
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const SLAPrintObjectConfig& cfg = po.config();
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config.minimal_z = float(cfg.support_minimal_z);
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@ -521,14 +522,17 @@ void SLAPrint::process()
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config.density_at_horizontal = cfg.support_density_at_horizontal / 10000.f;
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// Construction of this object does the calculation.
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this->throw_if_canceled();
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SLAAutoSupports auto_supports(po.transformed_mesh(),
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po.m_supportdata->emesh,
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po.get_model_slices(),
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heights,
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config);
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config,
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[this]() { throw_if_canceled(); });
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// Now let's extract the result.
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const std::vector<Vec3d>& points = auto_supports.output();
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this->throw_if_canceled();
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po.m_supportdata->support_points = sla::to_point_set(points);
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}
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else {
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