[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: changing contrast and brightness on the fly

Subject: Re: changing contrast and brightness on the fly
From: david(at)dfanning.com (David Fanning)
Date: Fri, 15 Jun 2001 20:55:22 -0600
Newsgroups: comp.lang.idl-pvwave
Organization: Fanning Software Consulting
References: <efc59150.0106151732.71c9890b@posting.google.com> <Pine.LNX.4.33.0106152012570.32515-100000@snoe.colorado.edu>
Xref: news.doit.wisc.edu comp.lang.idl-pvwave:25360

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/
Toll-Free IDL Book Orders: 1-888-461-0155

References:
- changing contrast and brightness on the fly
  - From: Simon Williams
- Re: changing contrast and brightness on the fly
  - From: Ken Mankoff

Prev by Date: Re: Map point
Next by Date: Re: changing contrast and brightness on the fly
Prev by thread: Re: changing contrast and brightness on the fly
Next by thread: Re: changing contrast and brightness on the fly
Index(es):
- Date
- Thread