64 lines
2.2 KiB
C++
64 lines
2.2 KiB
C++
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#include "MeshBoolean.hpp"
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// Include igl first. It defines "L" macro which then clashes with our localization
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#include <igl/copyleft/cgal/mesh_boolean.h>
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#undef L
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#include "libslic3r/TriangleMesh.hpp"
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namespace Slic3r {
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namespace MeshBoolean {
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typedef Eigen::Map<const Eigen::Matrix<float, Eigen::Dynamic, Eigen::Dynamic, Eigen::RowMajor | Eigen::DontAlign>> MapMatrixXfUnaligned;
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typedef Eigen::Map<const Eigen::Matrix<int, Eigen::Dynamic, Eigen::Dynamic, Eigen::RowMajor | Eigen::DontAlign>> MapMatrixXiUnaligned;
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static TriangleMesh eigen_to_triangle_mesh(const Eigen::MatrixXd& VC, const Eigen::MatrixXi& FC)
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{
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Pointf3s vertices;
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for (size_t i=0; i<VC.rows(); ++i)
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vertices.push_back(Vec3d(VC(i,0), VC(i,1), VC(i,2)));
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std::vector<Vec3crd> facets;
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for (size_t i=0; i<FC.rows(); ++i)
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facets.push_back(Vec3crd(FC(i,0), FC(i,1), FC(i,2)));
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TriangleMesh out(vertices, facets);
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out.require_shared_vertices();
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return out;
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}
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void minus(TriangleMesh& A, const TriangleMesh& B)
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{
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Eigen::MatrixXd VA = MapMatrixXfUnaligned(A.its.vertices.front().data(), A.its.vertices.size(), 3).cast<double>();
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Eigen::MatrixXi FA = MapMatrixXiUnaligned(A.its.indices.front().data(), A.its.indices.size(), 3);
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Eigen::MatrixXd VB = MapMatrixXfUnaligned(B.its.vertices.front().data(), B.its.vertices.size(), 3).cast<double>();
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Eigen::MatrixXi FB = MapMatrixXiUnaligned(B.its.indices.front().data(), B.its.indices.size(), 3);
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Eigen::MatrixXd VC;
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Eigen::MatrixXi FC;
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igl::MeshBooleanType boolean_type(igl::MESH_BOOLEAN_TYPE_MINUS);
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igl::copyleft::cgal::mesh_boolean(VA, FA, VB, FB, boolean_type, VC, FC);
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A = eigen_to_triangle_mesh(VC, FC);
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}
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void self_union(TriangleMesh& mesh)
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{
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Eigen::MatrixXd V = MapMatrixXfUnaligned(mesh.its.vertices.front().data(), mesh.its.vertices.size(), 3).cast<double>();
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Eigen::MatrixXi F = MapMatrixXiUnaligned(mesh.its.indices.front().data(), mesh.its.indices.size(), 3);
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Eigen::MatrixXd VC;
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Eigen::MatrixXi FC;
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igl::MeshBooleanType boolean_type(igl::MESH_BOOLEAN_TYPE_UNION);
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igl::copyleft::cgal::mesh_boolean(V, F, Eigen::MatrixXd(), Eigen::MatrixXi(), boolean_type, VC, FC);
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mesh = eigen_to_triangle_mesh(VC, FC);
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}
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} // namespace MeshBoolean
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} // namespace Slic3r
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