View Full Version : need help RPSolver

06 June 2006, 10:14 AM
does anyone know what decide the initial polevector direction when RPSolver is applied? look at my feet rig, the left one just points side ways, i set the preferred angle already. sure i can adjust the preferred angle manually, but that'll twist the toe, i have the same problem with the arm setup as well. pain in the ass :banghead:

06 June 2006, 04:38 AM
I always use a nurbs curve to control the direction of the pole vector, using a pole vector constraint. Have you given that a shot?

Looking at your pictures... Any reason you need an RP solver in the feet?
I usually see RP solvers in joint chains longer than 2 joints. That way you can orient the middle joint, like a knee or an elbow, by using a pole vector constraint. It looks like your IK is ankle->ball... so I would think an SC solver is better.

RP is great for an arm setup. If you draw the joints with a slight bend at the elbow, it should bend correctly automatically without setting the preferred angle. Then you can aim the elbow using a pole vector constraint.


06 June 2006, 10:08 AM
when i was reading ur reply, i was asking myself the same question, "y the hell was i using rpsolver..." i feel so stupid, thx for the help, lol, obviously the main reason is i used the wrong solver...

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06 June 2006, 10:08 AM
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