So first of all I have such image (and ofcourse I have all points coordinates in 2d so I can regenerate lines and check where they cross each other) superior0.narod.ru/2d.jpg But hey, I have another Image of same lines (I know thay are same) and new coords of my points like on this image superior0.narod.ru/3d.jpg So... now Having points (coords) on first image, How can I determin plane rotation and Z depth on second image (asuming first one's center was in point (0,0,0) with no rotation)? And can you please give an answer relative to my ABCD.. points or yours... BTW: cn any one pease edit this question so that IMAGES will be Images not links...