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Bob,
I'm still pretty new at Pov and it takes time for some of these things
to set in to the old brain. Old age I guess. I'm going to play with the
spline points for a while till I get it all worked out.
Thanks again for your help,
Les
bob h wrote:
> "Les Patterson" <les### [at] txcyber com> wrote in message
> news:3C5### [at] txcyber com...
>
>> Bob,
>> Thanks for your help in both replies.
>
>
> Welcome to whatever I can manage to help with.
>
>
>> I understand how to use (From, Using, & To) for the movements, but the
>> spline/path is giving me problems now. Also, if I can figure out the
>> spline coordinates, I might just close the end of the path closest to
>> camera and have a full figure8, keeping everything in front of the
>> camera. I can get straight lines and curved lines but no crisscrossing
>> lines or figure 8 yet.
>
>
> That movement you have set up is probably uneven. The spline path will yank
> the airplane around through it as though on the end of a snapping whip, well
> what I mean is that the interploation of points between won't be very
> steady. Of course you would like acceleration and deceleration I'm sure but
> you must be careful how you set the points up. The spacing between them
> should relate to speed, i.e. shorter spacings are slower and longer spacings
> are faster. There's been a lot done in the way splines are calculated
> within POV-Ray but Chris Colefax's generator macro is external and I can't
> remember how it goes about it. Would be obvious once you've rendered out
> the animation and viewed it.
> 3D graphing paper (nonexistant I guess :-)) would be perfect for planning
> such things out. A figure-8 wouldn't be a problem anyway, it shouldn't
> tangle up. ;-)
>
> bob h
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