[ODE] How to plug a chain of rigid bodies to an animation bone ?

[Megan Fox]

Here's how I would do it:

First, get used to the idea of kinematically (I believe that's the
proper term) driving your character's motion.  That is, if it's just a
floating bounding pill, drive it with forces, not setpos/setvel.

Once you've got that, attach the root of the plait at whatever
position in your bounding volume is equivalent to the proper part of
the head.

Once you've done that, make sure you set up your collision volume to
-NOT- allow collisions between mutliple linked bodies.  That is, no
part of the plait "rope" should collide with any other part of the
plait, or the character's body itself.  Drive your limits by setting
rotation max's and min's in the joints that make up the plait instead.

... the third is optional, but I've had no luck at all allowing
collisions between jointed bodies.  Frictions invariably seem to
develop, never mind how easy it is to "break" the joint and have
de-penetrating forces applying large amounts of energy to the joint.

-Megan Fox

On 5/2/05, Manu Beau <barchange at yahoo.fr> wrote:
> Hello guys,
> i have got a little issue for you :).
> 
> In my project, i need to simulate a woman's plait
> which react according to caracter's moves.
> 
> The problem is not to build the chain of rigid bodies
> which forms the plait but the fact that it is plugged
> to one bone of our animated skeleton.
> 
> Indeed, i don't know how to simulate the fact that a
> chain of rigid bodies has a fixed root in the air (our
> animation bone) and that it must follow it according
> to its rotation and position (as a fixed joint).
> 
> cheers,
> 
> Manu.
> 
> 
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