On Apr 12, 2007, at 10:07 PM, Sivakatirswami wrote:
I wonder if someone has already scripted this... I did not find it
in Malte Brill's tutorials:
Rolling wheel or ball: round object that has distintive colors and
shapes appears
to be rolling forward or backward.
One would have to grok the math for having the rotation match the
movement.
i.e. the circumference of the object would define the "length" that
it moved as
at rolled, if this is to look realistic. If speed increase, the
rate of rotation
would have to increase in proportion.
My higher math functions are rusty to non-existent... I *might* be
able
to figure it out. I suspect it is a simple combination of 2-3
functions.
So, before I try to re-invent this "wheel" I thought i would ask here.
Katir,
Do you remember a couple of years ago a few people on the list
collaborated to create a simple pool game--Nine Ball With Spin? Maybe
some of the routines in that stack would help you. If you don't have
a copy I have one at
go stack url "http://asay.byu.edu/calico/nineball.rev";
HTH
Devin
Devin Asay
Humanities Technology and Research Support Center
Brigham Young University
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