Opcode OPC_MeshInterface

udword MeshInterface::CheckTopology()	const
{
	// Check topology. If the model contains degenerate faces, collision report can be wrong in some cases.
	// e.g. it happens with the standard MAX teapot. So clean your meshes first... If you don't have a mesh cleaner
	// you can try this: www.codercorner.com/Consolidation.zip

	udword NbDegenerate = 0;

	VertexPointers VP;

	// Using callbacks, we don't have access to vertex indices. Nevertheless we still can check for
	// redundant vertex pointers, which cover all possibilities (callbacks/pointers/strides).
	for(udword i=0;i<mNbTris;i++)
	{
		GetTriangle(VP, i);

		if(		(VP.Vertex[0]==VP.Vertex[1])
			||	(VP.Vertex[1]==VP.Vertex[2])
			||	(VP.Vertex[2]==VP.Vertex[0]))	NbDegenerate++;
	}

	return NbDegenerate;
}

判断三角形的退化个数。

但是有一个缺点，应为它是按照顶点的索引号来进行判断。

所以我们必须对网格数据进行预处理，转化为类off格式的内部数据结构。