public CSGPolygon(CSGVertex P0, CSGVertex P1, CSGVertex P2)
{
vertices.Add(P0);
vertices.Add(P1);
vertices.Add(P2);
shared = 0;
this.plane = CSGPlane.fromPoints(P0.pos, P1.pos, P2.pos);
}
public CSGPolygon(List <CSGVertex> vertices, int shared)
{
this.vertices = vertices;
this.shared = shared;
this.plane = CSGPlane.fromPoints(vertices[0].pos, vertices[1].pos, vertices[2].pos);
}