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Re: semi-transparent IDLgrPolygon? alpha blending no good... [message #30439 is a reply to message #30424]

Tue, 23 April 2002 20:08

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

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

> To put it simply, when IDL renders a transparent atom it calculates the
> color of the atom's surface as a function of it's own color, your alpha
> value, and the color of objects behind it.

And other great stuff...

Thanks, Rick. I always hate these "which is in front
of which" questions because about all I can do is
wave my hands a bit and "mumble, mumble, right order,
mumble" my way though it. It takes a heck of a lot of
time to work your way though the details of this. I'm
grateful for that wonderful pimento article (which I
sometimes read when I want inspiration before going
to bed) and for this great advice.

You really should work on an object book. :-)

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: semi-transparent IDLgrPolygon? alpha blending no good... By: Sean Dettrick on Wed, 24 April 2002 14:06
		Re: semi-transparent IDLgrPolygon? alpha blending no good... By: David Fanning on Tue, 23 April 2002 20:08
		Re: semi-transparent IDLgrPolygon? alpha blending no good... By: Rick Towler on Tue, 23 April 2002 10:06
		Re: semi-transparent IDLgrPolygon? alpha blending no good... By: David Fanning on Tue, 23 April 2002 06:10

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