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Refactored hollowing backend to use indexed_triangle_mesh

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tamasmeszaros
2021-05-26 16:41:34 +02:00
parent f12187b53d
commit e6f97358bc
14 changed files with 204 additions and 68 deletions
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59
src/libslic3r/OpenVDBUtils.cpp
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@@ -54,14 +54,16 @@ openvdb::FloatGrid::Ptr mesh_to_grid(const indexed_triangle_set & mesh,
{
openvdb::initialize();
TriangleMeshPtrs meshparts_raw = mesh.split();
auto meshparts = reserve_vector<std::unique_ptr<TriangleMesh>>(meshparts_raw.size());
for (auto *p : meshparts_raw)
meshparts.emplace_back(p);
std::vector<indexed_triangle_set> meshparts;
its_split(mesh, std::back_inserter(meshparts));
// TriangleMeshPtrs meshparts_raw = mesh.split();
// auto meshparts = reserve_vector<std::unique_ptr<TriangleMesh>>(meshparts_raw.size());
// for (auto *p : meshparts_raw)
// meshparts.emplace_back(p);
auto it = std::remove_if(meshparts.begin(), meshparts.end(), [](auto &m) {
m->require_shared_vertices();
return m->volume() < EPSILON;
return its_volume(m) < EPSILON;
});
meshparts.erase(it, meshparts.end());
@@ -69,7 +71,7 @@ openvdb::FloatGrid::Ptr mesh_to_grid(const indexed_triangle_set & mesh,
openvdb::FloatGrid::Ptr grid;
for (auto &m : meshparts) {
auto subgrid = openvdb::tools::meshToVolume<openvdb::FloatGrid>(
TriangleMeshDataAdapter{*m, voxel_scale}, tr, exteriorBandWidth,
TriangleMeshDataAdapter{m, voxel_scale}, tr, exteriorBandWidth,
interiorBandWidth, flags);
if (grid && subgrid) openvdb::tools::csgUnion(*grid, *subgrid);
@@ -91,11 +93,10 @@ openvdb::FloatGrid::Ptr mesh_to_grid(const indexed_triangle_set & mesh,
return grid;
}
template<class Grid>
sla::Contour3D _volumeToMesh(const Grid &grid,
double isovalue,
double adaptivity,
bool relaxDisorientedTriangles)
indexed_triangle_set grid_to_mesh(const openvdb::FloatGrid &grid,
double isovalue,
double adaptivity,
bool relaxDisorientedTriangles)
{
openvdb::initialize();
@@ -111,36 +112,20 @@ sla::Contour3D _volumeToMesh(const Grid &grid,
scale = grid.template metaValue<float>("voxel_scale");
} catch (...) { }
sla::Contour3D ret;
ret.points.reserve(points.size());
ret.faces3.reserve(triangles.size());
ret.faces4.reserve(quads.size());
indexed_triangle_set ret;
ret.vertices.reserve(points.size());
ret.indices.reserve(triangles.size() + quads.size() * 2);
for (auto &v : points) ret.points.emplace_back(to_vec3d(v) / scale);
for (auto &v : triangles) ret.faces3.emplace_back(to_vec3i(v));
for (auto &v : quads) ret.faces4.emplace_back(to_vec4i(v));
for (auto &v : points) ret.vertices.emplace_back(to_vec3f(v) / scale);
for (auto &v : triangles) ret.indices.emplace_back(to_vec3i(v));
for (auto &quad : quads) {
ret.indices.emplace_back(quad(0), quad(1), quad(2));
ret.indices.emplace_back(quad(2), quad(3), quad(0));
}
return ret;
}
TriangleMesh grid_to_mesh(const openvdb::FloatGrid &grid,
double isovalue,
double adaptivity,
bool relaxDisorientedTriangles)
{
return to_triangle_mesh(
_volumeToMesh(grid, isovalue, adaptivity, relaxDisorientedTriangles));
}
sla::Contour3D grid_to_contour3d(const openvdb::FloatGrid &grid,
double isovalue,
double adaptivity,
bool relaxDisorientedTriangles)
{
return _volumeToMesh(grid, isovalue, adaptivity,
relaxDisorientedTriangles);
}
openvdb::FloatGrid::Ptr redistance_grid(const openvdb::FloatGrid &grid,
double iso,
double er,