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Mesh compound prior to voxelization

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This commit is contained in:
Thomas Krijnen
2019-08-28 16:15:28 +02:00
parent d76c599477
commit 0d7f6af681
1 changed files with 9 additions and 1 deletions
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src/ifcgeomserver/IfcGeomServer.cpp
+9 -1
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@@ -529,7 +529,7 @@ public:
// Sometimes geometries are not a topologically valid manifold, // Sometimes geometries are not a topologically valid manifold,
// but still (approximately) enclose a volume. In this case // but still (approximately) enclose a volume. In this case
// we can voxlize the geometry and fill the interior solid volume. // we can voxlize the geometry and fill the interior solid volume.
if (has_boundingbox) { else if (has_boundingbox) {
std::array< vec_n<3, double>, 2 > bounds; std::array< vec_n<3, double>, 2 > bounds;
for (int i = 0; i < 3; ++i) { for (int i = 0; i < 3; ++i) {
bounds[0].get(i) = bbox_xyz[i + 0]; bounds[0].get(i) = bbox_xyz[i + 0];
@@ -541,6 +541,14 @@ public:
// voxels. // voxels.
auto surface = storage_for(bounds, 128U, 4U); auto surface = storage_for(bounds, 128U, 4U);
processor proc(surface, silent); processor proc(surface, silent);
// @todo is scanline entirely reliable due to rounding from float to int?
// This is also observed in voxec dump_surfaces().
// proc.use_scanline() = false;
// @todo we still cannot correctly identify hollow objects correctly.
// is it an idea to use several points we know should be inside the volume?
// Or, use a boolean intersection of surface and volume and subtract any subsequent
// interior void volumes.
BRepMesh_IncrementalMesh(compound, 0.001);
std::vector<std::pair<int, TopoDS_Compound > > geometries = { {1, compound} }; std::vector<std::pair<int, TopoDS_Compound > > geometries = { {1, compound} };
proc.process(geometries.begin(), geometries.end(), SURFACE(), output(MERGED())); proc.process(geometries.begin(), geometries.end(), SURFACE(), output(MERGED()));
surface = (regular_voxel_storage*) proc.voxels(); surface = (regular_voxel_storage*) proc.voxels();