Hi Jim,
Nice stuff - thanks for throwing that together (I really shouldn't
have been so lazy and done something myself). You may want to add a
bit about reparameterizing your tread curve using centripetal as this
will evenly space the UVs meaning that your deform will have the
individual treads evenly placed.
Also if you draw your straight curve as linear then you should be able
to have a cubic curve fit to it and have the points evenly spaced.
Cheers,
Alan.
On 7/14/07, James G. Jones <jim(at)meshlab.com> wrote:
After having a great deal of fun messing around with tank treads, I put
together a brief tutorial-like page to collect what I learned. It's largely
based
on Alan Jones' method described in an earlier post, plus other info I picked
up on the XSI Base thread, where 'AndreZX' came up with a great way to do
the up vector constraints.
I'm not sure I covered everything completely, or all that well... I haven't
yet been using XSI very long, and some things are still a bit murky. :) If
anyone sees any errors or omissions, please let me know.
http://home.comcast.net/~jgj252/AnimatingTankTreadsInXSI.htm
-Jim
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