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deal with degenerate triangles in the btInternalEdgeUtility

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thanks to scarrow, see http://bulletphysics.org/Bullet/phpBB3/viewtopic.php?f=9&t=4603&start=15
This commit is contained in:
erwin.coumans
2010-02-05 05:31:08 +00:00
parent 04b7a7fff4
commit a5f51905e8
2 changed files with 20 additions and 0 deletions
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17
src/BulletCollision/CollisionDispatch/btInternalEdgeUtility.cpp
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@@ -72,6 +72,17 @@ struct btConnectivityProcessor : public btTriangleCallback
int sharedVertsA[3]={-1,-1,-1};
int sharedVertsB[3]={-1,-1,-1};
///skip degenerate triangles
btScalar crossBSqr = ((triangle[1]-triangle[0]).cross(triangle[2]-triangle[0])).length2();
if (crossBSqr < m_triangleInfoMap->m_equalVertexThreshold)
return;
btScalar crossASqr = ((m_triangleVerticesA[1]-m_triangleVerticesA[0]).cross(m_triangleVerticesA[2]-m_triangleVerticesA[0])).length2();
///skip degenerate triangles
if (crossASqr< m_triangleInfoMap->m_equalVertexThreshold)
return;
#if 0
printf("triangle A[0] = (%f,%f,%f)\ntriangle A[1] = (%f,%f,%f)\ntriangle A[2] = (%f,%f,%f)\n",
m_triangleVerticesA[0].getX(),m_triangleVerticesA[0].getY(),m_triangleVerticesA[0].getZ(),
@@ -94,8 +105,14 @@ struct btConnectivityProcessor : public btTriangleCallback
sharedVertsA[numshared] = i;
sharedVertsB[numshared] = j;
numshared++;
///degenerate case
if(numshared >= 3)
return;
}
}
///degenerate case
if(numshared >= 3)
return;
}
switch (numshared)
{