2004-08-18 22:53:05 UTC
I have a solid cube and a solid cylinder. The cylinder has been
translated so that it makes contact with part of the cube. I need to
find a way to display the region of contact between these two
primitives on the surface of the cube and hide the cylinder. Hence if
the cylinder intersects the cube head-on, a circle will be shown on
the side of the cube.
I've had a look at some CSG tutorials but can't find anything that
fits this problem as they all seem to focus on adding and subtracting
volumes rather than displaying the surface area of contact. There
must be a way of doing this as OpenGL calculates the areas of
intersection when two objects touch.
Can anyone help?