It looks like you can use Linear Interpolate with rotation (axis+angle) values directly. It seems to be treating that as a special case and implementing some clever maths.
gray -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of olivier jeannel Sent: Wednesday, July 24, 2013 4:34 PM To: [email protected] Subject: Re: Set Angular velocity No more in front of SI right now. Are you telling me to lineary blend the scalar angles ? Le 24/07/2013 22:16, Grahame Fuller a écrit : > Actually, the Linear Interpolate node can take axis-angle values directly. It > seems to be doing something clever under the hood to keep the axis constant. > > gray > > From: [email protected] > [mailto:[email protected]] On Behalf Of Grahame Fuller > Sent: Wednesday, July 24, 2013 3:50 PM > To: [email protected] > Subject: RE: Set Angular velocity > > It's the quaternion maths that limits it to one revolution. Use a rotation > data type (axis and angle), break it apart to interpolate the axis and the > angle separately, and then put them back together to set the orientation. > > gray > > From: > [email protected]<mailto:[email protected]> > [mailto:[email protected]] On Behalf Of olivier jeannel > Sent: Wednesday, July 24, 2013 2:12 PM > To: [email protected]<mailto:[email protected]> > Subject: Re: Set Angular velocity > > Thank you Graham ! > Avoiding for the moment the RigidBody, how would I do "cumulative" > Orientation ? > I seems to get something "working" but, it seems to ignore the number of > turns (* 360°) and go directly to the closest angular value ... > Here's my tree : > > [cid:[email protected]] > Le 24/07/2013 17:31, Grahame Fuller a écrit : > > AngularVelocity is understood only by the rigid body nodes, not by Simulate > Particles (and also understood by mr and other renderers for motion blur). > > > > So you could either compute and set Orientation yourself, or change your sim > to a rigid bodies one. > > > > gray > > > > From: > [email protected]<mailto:[email protected]> > [mailto:[email protected]] On Behalf Of olivier jeannel > > Sent: Wednesday, July 24, 2013 10:31 AM > > To: [email protected]<mailto:[email protected]> > > Subject: Set Angular velocity > > > > Hi List ! > > > > I was looking at Angular Velocity, is it possibleto set it ? (nothing wants > to happen if I set it...) > > What I was thinking is something similar to goal (with velocity) with some > damp effect. > > > > So the idea is : > > a particle has to reach a rotation angle, > > spins to get the correct angle > > Goes beyond and ty to stabilize around the goaled rotation angle. > > > > Exactly what Helge was doing with velocity in his early tutorials (Tutorials > that should be append to the holly bible, if you ask me) > > > > [cid:[email protected]] >
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