| Re: Fly through was Re: Cross-platform PWD [message #11974 is a reply to message #11958] |
Thu, 04 June 1998 00:00  |
davidf
Messages: 2866
Registered: September 1996
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Senior Member |
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I like Ding (biomedic@erols.com) more and more when
he writes in response to some criticism:
> You're right. I'm just bothered by a problem:
> how to do the fly through in a 3D image data set?
> Do you have time to help me?
Ah, you're right. In addition to yelling at Andy, I
suggest you give the dog a kick too. :-)
> RSI's IDL demo gave us a 'fly through' demo,
> in fact, that is not fly through, it's fly over.
> It use a 2D surface array to fly over it.
> What I want to do is a 3D array, user can display
> iso-surface or even volume rendering, then flying
> through by mouse-guiding or a predefined path.
> I think the basic thing is the same, to use
> 3d graphics model, apply the translate, rotate, and
> zoom ... methods... only thing I worry is that
> the process could be very slow.
Well, do you have a fast machine and a 3D OpenGL
accelerator card? Otherwise, I agree, it will probably
be slow.
> Has anyone already written similar codes? If you
> dont want to share the code, please just tell me
> whether it's tolerable in speed.
I haven't, but I'm willing to spend some time trying
to figure it out if you like. Send me a few more
details and I'll see what I can do. This will be
a good test for my hot, new 400 MHz baby with the
fast WRAM accelerator! :-)
> Thanks David, Thanks everyone!
Thank you for being so gracious.
Cheers,
David
-----------------------------------------------------------
David Fanning, Ph.D.
Fanning Software Consulting
E-Mail: davidf@dfanning.com
Phone: 970-221-0438
Coyote's Guide to IDL Programming: http://www.dfanning.com/
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