Paul

2004-08-18 22:53:05 UTC

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Hi,Raw Message

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?