private void ProjectPoly(MyPolygon input, MyPolygon output, ref Matrix projection)
{
for (int i = 0; i < input.LoopCount; ++i)
{
m_tmpList.Clear();
var iterator = input.GetLoopIterator(i);
while (iterator.MoveNext())
{
Vector3 transformed = Vector3.Transform(iterator.Current, projection);
m_tmpList.Add(transformed);
}
output.AddLoop(m_tmpList);
}
}
private MyPolygon UnprojectResult()
{
MyPolygon tmp = new MyPolygon(new Plane(Vector3.Forward, 0));
MyPolygon result = new MyPolygon(m_projectionPlane);
foreach (var poly in m_results)
{
poly.Postprocess();
var loop = poly.GetLoop();
if (loop.Count == 0) continue;
tmp.AddLoop(poly.GetLoop());
}
ProjectPoly(tmp, result, ref m_invProjectionTransform);
return result;
}