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Re: overlaying a transparent 24-bit image with different pixel scale [message #73230 is a reply to message #73229]

Fri, 29 October 2010 11:41

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

David Fanning writes:

> My only
> concern is that if I take what's in the display window
> as the background for the alpha channel, this will NOT
> make it possible to display the image in PostScript.
> (No window to read from.) Is this a limitation you
> can live with?

Maybe I would have to make you supply a "background"
image, from which I could take the information I
need to do the alpha blending. This would work, I think,
on all devices.

Cheers,

David

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

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[Message index]

		Re: overlaying a transparent 24-bit image with different pixel scale By: David Fanning on Fri, 29 October 2010 13:35
		Re: overlaying a transparent 24-bit image with different pixel scale By: Jeremy Bailin on Fri, 29 October 2010 13:13
		Re: overlaying a transparent 24-bit image with different pixel scale By: David Fanning on Fri, 29 October 2010 12:24
		Re: overlaying a transparent 24-bit image with different pixel scale By: Jeremy Bailin on Fri, 29 October 2010 11:47
		Re: overlaying a transparent 24-bit image with different pixel scale By: Jeremy Bailin on Fri, 29 October 2010 11:44
		Re: overlaying a transparent 24-bit image with different pixel scale By: David Fanning on Fri, 29 October 2010 11:41
		Re: overlaying a transparent 24-bit image with different pixel scale By: David Fanning on Fri, 29 October 2010 11:36

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