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Re: Question about using palettes with images and shader in object graphics [message #83277 is a reply to message #83273]

Tue, 12 February 2013 10:32

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

M. Katz writes:

> When displaying an IDLgrImage with an associated IDLgrShader, is the IDLgrPalette functionality disabled?
>
> Without the shader, you can use oImage.SetProperty, PALETTE=oPalette to change the display's color scheme in an instant.
>
> But with IDLgrShader, I'm fearing that it's a much more difficult task that will require writing code in shader language, which I've never attempted before.
>
> Any thoughts?

Never done it, but just reading the documentation, I would expect you to
also have to replace the shader object after changing the palette, to
get the shader to use the palette.

Cheers,

David

--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.idlcoyote.com/
Sepore ma de ni thue. ("Perhaps thou speakest truth.")

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[Message index]

		Re: Question about using palettes with images and shader in object graphics By: David Fanning on Tue, 12 February 2013 12:13
		Re: Question about using palettes with images and shader in object graphics By: M. Katz on Tue, 12 February 2013 12:05
		Re: Question about using palettes with images and shader in object graphics By: David Fanning on Tue, 12 February 2013 10:32

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