[Sidefx-houdini-list] DOP's angular velocity
ben.schrijvers at guerrilla-games.com
Wed Sep 1 12:30:56 EDT 2010
I've created a RBD path constraint to move objects along a path.
It's using a RBD Pin Constraint, RBD Angular Constraint and an Empty
Object Dop to create the goal.
The Empty Object is inactive and animated along the path with a Point
All works fine as the object follows and orients to the path.
If the constraints are broken the object flies off using it's inherited
But the object that flies of doesn't continue it's rotation. I noticed
that angvel is a very low value.
So I'm animation the goal now using a Motion Dop and origin() expression.
This because I believe the Motion Dop calculates angvel.
But still this is not transfered to the constrained object like velocity
seems to be.
I've now got a Motion Dop that overwrites angvel on the constrained
object until it looses the constraint.
It basicly references the channels that get calculated on the Motion Dop
that moves the goal object.
But I have to multiply the references by $TIMESTEP to get a good result.
Although it looks good now I'm not sure which values are oke.
The angvel values of my goal are $FPS higher then the ones on the
And why is angvel not just inherited by default in the same way that
Or am I doing something wrong??
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