public void CutHalfEdge(TriMesh.HalfEdge hf)
{
Vector3D p1 = hf.FromVertex.Traits.Position;
Vector3D p2 = hf.ToVertex.Traits.Position;
double d1 = TriMeshUtil.GetDistance(plane, p1);
double d2 = TriMeshUtil.GetDistance(plane, p2);
if (d1 < 0 && d2 > 0)
{
d1 = Math.Abs(d1);
d2 = Math.Abs(d2);
Vector3D pos = p1 + (p2 - p1) * d1 / (d1 + d2);
TriMesh.Vertex v1 = new TriMesh.Vertex(new VertexTraits(pos));
this.mesh.AppendToVertexList(v1);
TriMesh.Vertex v2 = new TriMesh.Vertex(new VertexTraits(pos));
this.mesh.AppendToVertexList(v2);
this.cutPoint[hf.Index] = new CutPoint {
Left = v1, Right = v2
};
}
}