Re: [Algorithms] Skeletal Animation...

[Pierre T. <p.t...@wa...>]

Agreed.
Brandon, you may have a look there: www.codercorner.com\Cloth.htm

I use springs as described by Tom, and I believe it would be just perfect
for a ponytail. Actually the default piece of cloth in the demo could look
like a ponytail once reduced (it's a bit lengthy).

Pierre

----- Original Message -----
From: Tom Forsyth <to...@mu...>
To: <gda...@li...>
Sent: Tuesday, August 29, 2000 11:25 AM
Subject: RE: [Algorithms] Skeletal Animation...


> Use stiff springs between the vertices of the ponytail, and no instant
> propogation down the chain. So each frame, each spring just affects the
ones
> it is attached to. It works just fine for apps like this, where a little
bit
> of deformation is not going to be noticed. Propogating forces/impluses
down
> chains instantly is a real pain, but allowing the springs to do it
> themselves over a few frames makes life much easier. It goes wrong for
some
> apps, but not in this case.
>
> Tom Forsyth - Muckyfoot bloke.
> Whizzing and pasting and pooting through the day.
>
> > -----Original Message-----
> > From: Brandon Moro [mailto:the...@us...]
> > Sent: 29 August 2000 06:59
> > To: gda...@li...
> > Subject: [Algorithms] Skeletal Animation...
> >
> >
> > Hello.
> >
> > I was wondering if anyone had links to some good skeletal animation
> > techniques and perhaps some information about the kinematics involved.
> >
> > For example, if I was a model to have a ponytail which moves
> > realistically.
> > Given gravity and the mass of my character, I should be able
> > to generate the
> > normal force produced by walking (feet hitting the ground).
> >
> > Assuming the ponytail is just a couple bones end-to-end
> > sharing intermediate
> > vertices, the problem I arrive at is the way to correctly
> > propogate a force
> > applied at the origin vertex (ie the one connecting the
> > ponytail to the
> > head) down into the other vertices.
> >
> > Any possible links would be great.  I heard that someone
> > wrote quite a few
> > papers on the physics involved in this, but I can't remember his name
> > exactly.  I know his last name is something like Mirich, but
> > thats not quite
> > it.
> >
> > Thanx!
> > Brandon Moro
> >
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