Quote - The center point is the position about which the joint will rotate.

The end point is usually, but not always, the center point of the next actor in the hierarchy.

The axial twist rotation will be along a line drawn between the center and end points.

If the actor points at another object it does so along a line projected from the center point through the end point.

Hope that helps.

 

Thanks. So then I am more interested in the center point (green axes).

Essentially we can regard the green axes as the local (or object) coordinate system. Is this correct?

I need to render a hand from all different viewpoints.

I have two options:

a) keep a camera still and just rotate the hand.

b) keep the hand still, and rotate a camera around the hand. I believe this way is easiest. I will need the camera to point at the center of the mass of the hand.

 

What do you think is the best way?

Thanks!

 

Paul