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Work on MeshDecimator.

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This commit is contained in:
David Williams
2011-01-03 21:46:40 +00:00
parent 996dfac39c
commit 773cfc4887
7 changed files with 223 additions and 335 deletions
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38
library/PolyVoxCore/include/SurfaceMesh.inl
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@ -332,44 +332,6 @@ namespace PolyVox
}
}
//This function looks at every vertex in the mesh and determines
//how many of it's neighbours have the same material.
template <typename VertexType>
void SurfaceMesh<VertexType>::countNoOfNeighboursUsingMaterial(void)
{
//Find all the neighbouring vertices for each vertex
std::vector< std::set<int> > neighbouringVertices(m_vecVertices.size());
for(int triCt = 0; triCt < m_vecTriangleIndices.size() / 3; triCt++)
{
int v0 = m_vecTriangleIndices[(triCt * 3 + 0)];
int v1 = m_vecTriangleIndices[(triCt * 3 + 1)];
int v2 = m_vecTriangleIndices[(triCt * 3 + 2)];
neighbouringVertices[v0].insert(v1);
neighbouringVertices[v0].insert(v2);
neighbouringVertices[v1].insert(v0);
neighbouringVertices[v1].insert(v2);
neighbouringVertices[v2].insert(v0);
neighbouringVertices[v2].insert(v1);
}
//For each vertex, check how many neighbours have the same material
m_vecNoOfNeighboursUsingMaterial.resize(m_vecVertices.size());
for(int vertCt = 0; vertCt < m_vecVertices.size(); vertCt++)
{
m_vecNoOfNeighboursUsingMaterial[vertCt] = 0;
for(std::set<int>::iterator iter = neighbouringVertices[vertCt].begin(); iter != neighbouringVertices[vertCt].end(); iter++)
{
if(m_vecVertices[vertCt].getMaterial() == m_vecVertices[*iter].getMaterial())
{
m_vecNoOfNeighboursUsingMaterial[vertCt]++;
}
}
}
}
template <typename VertexType>
polyvox_shared_ptr< SurfaceMesh<VertexType> > SurfaceMesh<VertexType>::extractSubset(std::set<uint8_t> setMaterials)
{