| Object Graphics Color Weirdness [message #70440] |
Wed, 14 April 2010 08:38 |
David Fanning
Messages: 11724
Registered: August 2001
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Senior Member |
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Folks,
Has anyone noticed some weirdness with colors in object graphics
applications? I got a report this morning from someone who was
trying to do something very simple with a vertical colorbar
program of mine:
http://www.dfanning.com/programs/vcolorbar__define.pro
This is an old program that makes a color bar by including
an image with a color palette as a texture map on a polygon.
(Younger readers won't fully appreciate how low-level things
were years ago!)
Anyway, the code is simple:
thisPalette = Obj_New('IDLgrPalette')
thisPalette->LoadCT, 25
thisColorbar=OBJ_NEW('VColorBar',COLOR=[0,0,0], Palette=thisPalette)
XObjView, thisColorbar
I expect to see a rainbow color bar. And this is what
I *do* see...now. But, when I first ran this code, I saw
a gray-scale color bar, and this is what the user is also
seeing. I'm running IDL 7.0.2 in Windows 7 64-bit OS.
I have not been able to reproduce the problem with repeated
starts and stops of IDL. But, I know what I saw, and it is
WAY too early in the morning for the juice to have had any
appreciable effect. Any ideas?
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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