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Drawing 3D Objects properly [message #31975]

Thu, 05 September 2002 00:49

MKatz843
Messages: 98
Registered: March 2002

Member

I'm very comfortable with object graphics in 2D. Now I've started
branching out into the 3rd dimension. (No, I haven't yet seen the new
object graphics book.)

Whatever I try, I can't seem to get solid-fill polygons to
successfully "hide" or "block" another from view. With texture-mapped
polygons it works. I've tried futzing with REJECT = [0,1,2], BOTTOM
colors, you name it.

I'm just drawing 6-sided, rectangular, 3D boxes. By changing the
handedness of the vectors I can make the surface seem to disappear in
an undesirable way, but I can't get one surface to block another.

Any tips? This problem should be too simple for IDLgrVolume objects.
I'd like to stick to IDLgrPolygon objects, if possible.

Thanks,

M. Katz

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[Message index]

		Drawing 3D Objects properly By: MKatz843 on Thu, 05 September 2002 00:49
		Re: Drawing 3D Objects properly By: David Fanning on Fri, 06 September 2002 19:29
		Re: Drawing 3D Objects properly By: Rick Towler on Fri, 06 September 2002 14:56
		Re: Drawing 3D Objects properly By: David Fanning on Thu, 05 September 2002 18:29
		Re: Drawing 3D Objects properly By: Karl Schultz on Thu, 05 September 2002 14:07
		Re: Drawing 3D Objects properly By: Rick Towler on Thu, 05 September 2002 11:33
		Re: Drawing 3D Objects properly By: MKatz843 on Thu, 05 September 2002 11:08
		Re: Drawing 3D Objects properly By: Rick Towler on Thu, 05 September 2002 08:51

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