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BulletSim: make removing zero width triangles from meshes optional

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and, for the moment, default to 'off'.
This commit is contained in:
Robert Adams
2013-02-05 17:19:55 -08:00
parent dce9e323f4
commit 3646361279
4 changed files with 33 additions and 24 deletions
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51
OpenSim/Region/Physics/BulletSPlugin/BSShapeCollection.cs
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@@ -640,34 +640,37 @@ public sealed class BSShapeCollection : IDisposable
{
int[] indices = meshData.getIndexListAsInt();
// int realIndicesIndex = indices.Length;
int realIndicesIndex = indices.Length;
float[] verticesAsFloats = meshData.getVertexListAsFloat();
// Remove degenerate triangles. These are triangles with two of the vertices
// are the same. This is complicated by the problem that vertices are not
// made unique in sculpties so we have to compare the values in the vertex.
int realIndicesIndex = 0;
for (int tri = 0; tri < indices.Length; tri += 3)
if (BSParam.ShouldRemoveZeroWidthTriangles)
{
int v1 = indices[tri + 0] * 3;
int v2 = indices[tri + 1] * 3;
int v3 = indices[tri + 2] * 3;
if (!( ( verticesAsFloats[v1 + 0] == verticesAsFloats[v2 + 0]
&& verticesAsFloats[v1 + 1] == verticesAsFloats[v2 + 1]
&& verticesAsFloats[v1 + 2] == verticesAsFloats[v2 + 2] )
|| ( verticesAsFloats[v2 + 0] == verticesAsFloats[v3 + 0]
&& verticesAsFloats[v2 + 1] == verticesAsFloats[v3 + 1]
&& verticesAsFloats[v2 + 2] == verticesAsFloats[v3 + 2] )
|| ( verticesAsFloats[v1 + 0] == verticesAsFloats[v3 + 0]
&& verticesAsFloats[v1 + 1] == verticesAsFloats[v3 + 1]
&& verticesAsFloats[v1 + 2] == verticesAsFloats[v3 + 2] ) )
)
// Remove degenerate triangles. These are triangles with two of the vertices
// are the same. This is complicated by the problem that vertices are not
// made unique in sculpties so we have to compare the values in the vertex.
realIndicesIndex = 0;
for (int tri = 0; tri < indices.Length; tri += 3)
{
// None of the vertices of the triangles are the same. This is a good triangle;
indices[realIndicesIndex + 0] = indices[tri + 0];
indices[realIndicesIndex + 1] = indices[tri + 1];
indices[realIndicesIndex + 2] = indices[tri + 2];
realIndicesIndex += 3;
int v1 = indices[tri + 0] * 3;
int v2 = indices[tri + 1] * 3;
int v3 = indices[tri + 2] * 3;
if (!((verticesAsFloats[v1 + 0] == verticesAsFloats[v2 + 0]
&& verticesAsFloats[v1 + 1] == verticesAsFloats[v2 + 1]
&& verticesAsFloats[v1 + 2] == verticesAsFloats[v2 + 2])
|| (verticesAsFloats[v2 + 0] == verticesAsFloats[v3 + 0]
&& verticesAsFloats[v2 + 1] == verticesAsFloats[v3 + 1]
&& verticesAsFloats[v2 + 2] == verticesAsFloats[v3 + 2])
|| (verticesAsFloats[v1 + 0] == verticesAsFloats[v3 + 0]
&& verticesAsFloats[v1 + 1] == verticesAsFloats[v3 + 1]
&& verticesAsFloats[v1 + 2] == verticesAsFloats[v3 + 2]))
)
{
// None of the vertices of the triangles are the same. This is a good triangle;
indices[realIndicesIndex + 0] = indices[tri + 0];
indices[realIndicesIndex + 1] = indices[tri + 1];
indices[realIndicesIndex + 2] = indices[tri + 2];
realIndicesIndex += 3;
}
}
}
DetailLog("{0},BSShapeCollection.CreatePhysicalMesh,origTri={1},realTri={2},numVerts={3}",