Function GetEdge

external/mikktspace/mikktspace.c:1703–1731

resolve ordering and edge number

// resolve ordering and edge number
static void GetEdge(int * i0_out, int * i1_out, int * edgenum_out, const int indices[], const int i0_in, const int i1_in)
{
	*edgenum_out = -1;
	
	// test if first index is on the edge
	if (indices[0]==i0_in || indices[0]==i1_in)
	{
		// test if second index is on the edge
		if (indices[1]==i0_in || indices[1]==i1_in)
		{
			edgenum_out[0]=0;	// first edge
			i0_out[0]=indices[0];
			i1_out[0]=indices[1];
		}
		else
		{
			edgenum_out[0]=2;	// third edge
			i0_out[0]=indices[2];
			i1_out[0]=indices[0];
		}
	}
	else
	{
		// only second and third index is on the edge
		edgenum_out[0]=1;	// second edge
		i0_out[0]=indices[1];
		i1_out[0]=indices[2];
	}
}


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