| Re: How to get a very large 2D projected surface image [message #51925 is a reply to message #51920] |
Sat, 09 December 2006 08:59   |
David Fanning
Messages: 11724
Registered: August 2001
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Senior Member |
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Hongkai writes:
> I once tried to divide the image into several sub-areas and get the
> projected image of each area, then I merge all the projected images to
> get a global projected image, which is very large.
> Unfortunately, this method is unreasonable because each projected
> image has its unique EYE_POSITION. When IDLgrView is creating the
> projected view of the surface, the eye is always positioned directly in
> front of the center of the viewplane rectangle. Thus the eye position
> of each sub-area is in front of the its own area center, and the global
> projected image does not have an universal eye position.
Well, I don't have any good ideas about this, other than
to look around Rick Towler's web page for something that
might help. But have you given any thought to what you
are going to DO with this 20K by 20K surface once you
have created it? That seems to me to be just as problematic
as creating it in the first place.
> I really want to punt.
I can believe it! :-)
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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