internal double ComputeFacePerimeter(int faceId, bool[] flags)
{
var perim = 0.0;
var face = Face(faceId);
for (var i = 0; i < 3; i++)
{
if (flags != null)
{
if (!flags[i])
{
continue;
}
}
var vi = Vertex(face[i]);
var vj = Vertex(face[(i + 1) % 3]);
var diff = new double[3];
MxVectorOps.Sub3(ref diff, vi.Pos, vj.Pos);
perim += MxVectorOps.Length3(diff);
}
return(perim);
}
internal double ComputeFaceArea(int faceId)
{
var normal = new double[3];
ComputeFaceNormal(faceId, ref normal, false);
return(0.5 * MxVectorOps.Length3(normal));
}
