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Started refactoring CubicSurfaceExtractor to free functions rather than just wrapping a class.

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David Williams
2015-12-07 23:45:24 +00:00
parent 28a3d78354
commit 65a973f94e
2 changed files with 55 additions and 56 deletions
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42
include/PolyVox/CubicSurfaceExtractor.inl
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@ -248,7 +248,7 @@ namespace PolyVox
Quad& q1 = *outerIter;
Quad& q2 = *innerIter;
bool result = mergeQuads(q1,q2);
bool result = mergeQuads(q1, q2, m_meshCurrent);
if(result)
{
@ -264,44 +264,4 @@ namespace PolyVox
return bDidMerge;
}
template<typename VolumeType, typename MeshType, typename IsQuadNeeded>
bool CubicSurfaceExtractor<VolumeType, MeshType, IsQuadNeeded>::mergeQuads(Quad& q1, Quad& q2)
{
//All four vertices of a given quad have the same data,
//so just check that the first pair of vertices match.
if (m_meshCurrent->getVertices()[q1.vertices[0]].data == m_meshCurrent->getVertices()[q2.vertices[0]].data)
{
//Now check whether quad 2 is adjacent to quad one by comparing vertices.
//Adjacent quads must share two vertices, and the second quad could be to the
//top, bottom, left, of right of the first one. This gives four combinations to test.
if((q1.vertices[0] == q2.vertices[1]) && ((q1.vertices[3] == q2.vertices[2])))
{
q1.vertices[0] = q2.vertices[0];
q1.vertices[3] = q2.vertices[3];
return true;
}
else if((q1.vertices[3] == q2.vertices[0]) && ((q1.vertices[2] == q2.vertices[1])))
{
q1.vertices[3] = q2.vertices[3];
q1.vertices[2] = q2.vertices[2];
return true;
}
else if((q1.vertices[1] == q2.vertices[0]) && ((q1.vertices[2] == q2.vertices[3])))
{
q1.vertices[1] = q2.vertices[1];
q1.vertices[2] = q2.vertices[2];
return true;
}
else if((q1.vertices[0] == q2.vertices[3]) && ((q1.vertices[1] == q2.vertices[2])))
{
q1.vertices[0] = q2.vertices[0];
q1.vertices[1] = q2.vertices[1];
return true;
}
}
//Quads cannot be merged.
return false;
}
}