94 lines
3.5 KiB
C++
94 lines
3.5 KiB
C++
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#include "openvdb_utils.hpp"
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namespace Slic3r {
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class TriangleMeshDataAdapter {
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public:
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const TriangleMesh &mesh;
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size_t polygonCount() const { return mesh.its.indices.size(); }
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size_t pointCount() const { return mesh.its.vertices.size(); }
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size_t vertexCount(size_t) const { return 3; }
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// Return position pos in local grid index space for polygon n and vertex v
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void getIndexSpacePoint(size_t n, size_t v, openvdb::Vec3d& pos) const;
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};
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class Contour3DDataAdapter {
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public:
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const sla::Contour3D &mesh;
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size_t polygonCount() const { return mesh.faces3.size() + mesh.faces4.size(); }
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size_t pointCount() const { return mesh.points.size(); }
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size_t vertexCount(size_t n) const { return n < mesh.faces3.size() ? 3 : 4; }
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// Return position pos in local grid index space for polygon n and vertex v
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void getIndexSpacePoint(size_t n, size_t v, openvdb::Vec3d& pos) const;
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};
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void TriangleMeshDataAdapter::getIndexSpacePoint(size_t n,
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size_t v,
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openvdb::Vec3d &pos) const
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{
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auto vidx = size_t(mesh.its.indices[n](Eigen::Index(v)));
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Slic3r::Vec3d p = mesh.its.vertices[vidx].cast<double>();
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pos = {p.x(), p.y(), p.z()};
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}
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void Contour3DDataAdapter::getIndexSpacePoint(size_t n,
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size_t v,
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openvdb::Vec3d &pos) const
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{
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size_t vidx = 0;
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if (n < mesh.faces3.size()) vidx = size_t(mesh.faces3[n](Eigen::Index(v)));
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else vidx = size_t(mesh.faces4[n - mesh.faces3.size()](Eigen::Index(v)));
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Slic3r::Vec3d p = mesh.points[vidx];
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pos = {p.x(), p.y(), p.z()};
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}
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openvdb::FloatGrid::Ptr meshToVolume(const TriangleMesh & mesh,
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const openvdb::math::Transform &tr)
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{
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return openvdb::tools::meshToVolume<openvdb::FloatGrid>(
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TriangleMeshDataAdapter{mesh}, tr);
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}
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openvdb::FloatGrid::Ptr meshToVolume(const sla::Contour3D & mesh,
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const openvdb::math::Transform &tr)
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{
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return openvdb::tools::meshToVolume<openvdb::FloatGrid>(
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Contour3DDataAdapter{mesh}, tr);
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}
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inline Vec3f to_vec3f(const openvdb::Vec3s &v) { return Vec3f{v.x(), v.y(), v.z()}; }
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inline Vec3d to_vec3d(const openvdb::Vec3s &v) { return to_vec3f(v).cast<double>(); }
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inline Vec3i to_vec3i(const openvdb::Vec3I &v) { return Vec3i{int(v[0]), int(v[1]), int(v[2])}; }
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inline Vec4i to_vec4i(const openvdb::Vec4I &v) { return Vec4i{int(v[0]), int(v[1]), int(v[2]), int(v[3])}; }
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sla::Contour3D volumeToMesh(const openvdb::FloatGrid &grid,
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double isovalue,
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double adaptivity,
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bool relaxDisorientedTriangles)
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{
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std::vector<openvdb::Vec3s> points;
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std::vector<openvdb::Vec3I> triangles;
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std::vector<openvdb::Vec4I> quads;
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openvdb::tools::volumeToMesh(grid, points, triangles, quads, isovalue,
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adaptivity, relaxDisorientedTriangles);
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sla::Contour3D ret;
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ret.points.reserve(points.size());
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ret.faces3.reserve(triangles.size());
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ret.faces4.reserve(quads.size());
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for (auto &v : points) ret.points.emplace_back(to_vec3d(v));
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for (auto &v : triangles) ret.faces3.emplace_back(to_vec3i(v));
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for (auto &v : quads) ret.faces4.emplace_back(to_vec4i(v));
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return ret;
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}
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} // namespace Slic3r
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