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| Re: Flythrough [message #34398 is a reply to message #34394] |
Mon, 10 March 2003 05:15  |
robert.dimeo
Messages: 42
Registered: November 2001
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Hi,
I think you will want to check out the camera object class written by
Rick Towler at http://www.acoustics.washington.edu/~towler. You will
need the two object classes camera__define.pro and
quaternion__define.pro. I found his camera object class a snap to use
and wrote a sophisticated flythrough of a molecular model in less than
an hour.
Wrapping the flythrough in a widget and using keyboard events to
provide navigation controls was easy too! Of course you need IDL 5.6
to get the keyboard events processed correctly or use J.D. Smith's
hack to process keyboard events in draw widgets for IDL releases
earlier than 5.6 (David Fanning has a very nice discussion of this
technique).
Hope this helps,
Rob
Thomas Gutzler <tgutzler@ee.uwa.edu.au> wrote in message news:<3E6C3C35.6030409@ee.uwa.edu.au>...
> Hi all,
>
> I have to simulate a flythrough of a polygon-model (airway, comparable
> to lots of circles with different z-coordinates).
> I tried to copy'n'paste'n'modify the flythrough-demo but it didn't work.
> It seems to translate in x/y-direction, not z.
> Then I tried simple translations in z-direction which didn't work, too.
> It seems, the model stays centered in z-direction and if it translates
> far enough, it reaches the border of the viewbox and is cut off till it
> completely disappears.
> I tried moving the eye into the viewplane (zclip) but this also failed -
> nothing seemed to happen. Moving it further somewhen results in:
> 'Warning: EYE must be greater than the ZCLIP near value. EYE has been
> set to near+0.1.'.
>
> I'm clueless now.
> Has anybody done something like that and could tell me a few secrets
> about getting it to work ?
>
> thx,
> Tom
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