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Re: Transparent texture mapped polygons [message #29875]

Mon, 25 March 2002 17:16

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Rick Towler (rtowler@u.washington.edu) writes:

> Yes, objects in a view are rendered according to their order in the view
> container. When texturing with an alpha channel the order of rendering
> becomes important. Add items from back to front like you first tried. I
> see that you are sharing the same verticies between your billboards. I am
> not sure how IDL will handle rendering this since your planes occupy the
> same z space but I think this is your problem. Push your background plane
> back a little in z.

I think having coincident polygons is the problem, too.
I've modified my Image_Blend program so that the images
rotate on polygons. You can have a look if you are
interested.

ftp://ftp.dfanning.com/pub/dfanning/outgoing/misc/image_blen d_poly.pro

Cheers,

David

--
David W. Fanning, Ph.D.
Fanning Software Consulting
Phone: 970-221-0438, E-mail: david@dfanning.com
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Toll-Free IDL Book Orders: 1-888-461-0155

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[Message index]

		Re: Transparent texture mapped polygons By: David Fanning on Mon, 25 March 2002 17:16
		Re: Transparent texture mapped polygons By: Rick Towler on Mon, 25 March 2002 12:24
		Re: Transparent texture mapped polygons By: lyubo on Mon, 25 March 2002 10:15
		Re: Transparent texture mapped polygons By: Rick Towler on Sun, 24 March 2002 20:59
		Re: Transparent texture mapped polygons By: Karl Schultz on Tue, 26 March 2002 08:09

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