Classify the triangle against a plane defined by a triangle, and return whether it's in front, behind, coplanar or intersecting the plane note that if intersecting is returned, this is only in relation to whether the triangle intersects the plane, not whether the two triangles intersect

public Classify ClassifyTriangle(
	ref Triangle PlaneTriangle,
	ref int infront,
	ref int behind,
	ref int coplanar
)