| Re: Strange background colour in Object graphics [message #30098] |
Mon, 08 April 2002 21:05 |
Rick Towler
Messages: 821
Registered: August 1998
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Senior Member |
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I probably would have just chocked it up to differences in the graphics
subsystem but since David doesn't see this behavior that can't be it. Not
like it would have been a *good* answer ;)
Is it possible that your graphics adapter has separate gamma or color
correct settings for openGL? Try it with the OG renderer set to software
and see what happens. If the problem goes away, start looking for color
correction and/or gamma controls.
-Rick
"Reno Choi" <K.Y.Choi@soton.ac.uk> wrote in message
news:f710aa82.0204081830.7ce3360a@posting.google.com...
> Hi.
>
> Thanks for your help for my questions the other day about widget
> project. I managed to divide seperate widget draws in a single window
> and it's even resizeable!
>
> Another question is now araised. I put both direct and object draws in
> my program (in seperate widget draws, of course). I tried to match
> background colours for those draws, but only my object draws shows
> rather different background colours, though I used the same colour
> numbers, e.g. backColour=[236,233,216] which is gray used in ordinary
> window systems. The colour was set in IDLgrView as follows,
>
> backColour=[236,233,216]
> oView = OBJ_NEW('IDLgrView', PROJECTION=2, COLOR=backColour)
>
> Background in all direct plots are identical to the one in the Window,
> but object draw has a bit brighter colour (I'd say its rather white!).
>
> Anyone can explain why it happens and how to correct?
>
> Thanks.
>
> Reno
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| Re: Strange background colour in Object graphics [message #30099 is a reply to message #30098] |
Mon, 08 April 2002 20:42  |
David Fanning
Messages: 11724
Registered: August 2001
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Senior Member |
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Reno Choi (K.Y.Choi@soton.ac.uk) writes:
> Thanks for your help for my questions the other day about widget
> project. I managed to divide seperate widget draws in a single window
> and it's even resizeable!
>
> Another question is now araised. I put both direct and object draws in
> my program (in seperate widget draws, of course). I tried to match
> background colours for those draws, but only my object draws shows
> rather different background colours, though I used the same colour
> numbers, e.g. backColour=[236,233,216] which is gray used in ordinary
> window systems. The colour was set in IDLgrView as follows,
>
> backColour=[236,233,216]
> oView = OBJ_NEW('IDLgrView', PROJECTION=2, COLOR=backColour)
>
> Background in all direct plots are identical to the one in the Window,
> but object draw has a bit brighter colour (I'd say its rather white!).
>
> Anyone can explain why it happens and how to correct?
I tried this on my Windows machine (24-bit color) and
the colors in the two windows were identical. There isn't
a chance, is there, that you are running this program on
an 8-bit display?
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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