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Corrected ComputePoissonDiskRadius to Manage approximately the PointCloud Case, using area of the bbox as an approx of the surface area.

This commit is contained in:
Paolo Cignoni 2009-03-27 15:09:14 +00:00
parent 9a0b315fb0
commit 066c2bdb8b
1 changed files with 9 additions and 1 deletions
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10
vcg/complex/trimesh/point_sampling.h
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@ -765,7 +765,15 @@ struct PoissonDiskParam
static ScalarType ComputePoissonDiskRadius(MetroMesh &origMesh, int sampleNum) static ScalarType ComputePoissonDiskRadius(MetroMesh &origMesh, int sampleNum)
{ {
ScalarType meshArea = Stat<MetroMesh>::ComputeMeshArea(origMesh); ScalarType meshArea = Stat<MetroMesh>::ComputeMeshArea(origMesh);
ScalarType diskRadius = sqrt(meshArea / (0.7 * M_PI * sampleNum)); // 0.7 is a density factor // Manage approximately the PointCloud Case, use the half a area of the bbox.
// TODO: If you had the radius a much better approximation could be done.
if(meshArea ==0)
{
meshArea = (origMesh.bbox.DimX()*origMesh.bbox.DimY() +
origMesh.bbox.DimX()*origMesh.bbox.DimZ() +
origMesh.bbox.DimY()*origMesh.bbox.DimZ());
}
ScalarType diskRadius = sqrt(meshArea / (0.7 * M_PI * sampleNum)); // 0.7 is a density factor
return diskRadius; return diskRadius;
} }