static public IEnumerable <Vector3> GetTriangleIntersection(this Plane item, Triangle3 triangle)
{
if (triangle.IsDegenerate() == false)
{
if (item.FullyContains(triangle))
{
return(triangle.GetPoints());
}
Plane plane = triangle.GetPlane();
if (plane.normal != Vector3.zero)
{
PlaneSpace plane_space = plane.GetPlaneSpace();
ConvexPolygon triangle_polygon = new ConvexPolygon(
plane_space.ProjectPoints(triangle.GetPoints())
);
Plane2 plane_polygon;
if (plane_space.IsIntersecting(item, out plane_polygon))
{
return(plane_space.InflatePoints(
triangle_polygon.GetIntersection(plane_polygon).GetVertexs()
));
}
}
}
return(Empty.IEnumerable <Vector3>());
}
