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Re: changing contrast and brightness on the fly [message #25433 is a reply to message #25432]

Fri, 15 June 2001 19:55

david[2]
Messages: 100
Registered: June 2001

Senior Member

Ken Mankoff writes:
>
> I think brightness adjustment is achieved with alpha channels. May require
> IDL Object Graphics. There are other ways. Search the groups.google.com
> archive for recent threads on this topic.
>
> IDL> ? cursor ; for your
> IDL> ? !mouse ; second question.

Uh, I don't think I would be recommending object
graphics on the one hand, and the Cursor command (for
God's sake!) on the other!

Stick with direct graphics in a draw widget
*without* a Cursor command, is my advice. :-)

Cheers,

David

--
David Fanning, Ph.D.
Fanning Software Consulting
Phone: 970-221-0438 E-Mail: davidf@dfanning.com
Coyote's Guide to IDL Programming: http://www.dfanning.com/
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[Message index]

		changing contrast and brightness on the fly By: Simon Williams on Fri, 15 June 2001 17:13
		Re: changing contrast and brightness on the fly By: david[2] on Fri, 15 June 2001 19:55
		Re: changing contrast and brightness on the fly By: david[2] on Fri, 15 June 2001 19:43
		Re: changing contrast and brightness on the fly By: Ken Mankoff on Fri, 15 June 2001 19:24
		Re: changing contrast and brightness on the fly By: Richard Tyc on Mon, 18 June 2001 07:42
		Re: changing contrast and brightness on the fly By: slashell on Thu, 21 June 2001 09:55
		Re: changing contrast and brightness on the fly By: John-David T. Smith on Wed, 20 June 2001 13:26
		Re: changing contrast and brightness on the fly By: Liam E. Gumley on Wed, 20 June 2001 07:11
		Re: changing contrast and brightness on the fly By: m.hadfield on Mon, 18 June 2001 18:41

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