2
$\begingroup$

In the game engine there is an option to constrain rigid body translations and rotations on an axis:

enter image description here

Is it possible to do this with the 3D view rigid body physics system?

$\endgroup$
1
$\begingroup$

In blender 2.80 (and likely earlier versions), you can selectively lock translation and rotation axes, limiting physics simulations to your choosing.

Do this in the Transform sidebar (hit N to toggle).

enter image description here

As seen above, both X and Y axis has been locked, forcing simulation to only translate along Z-axis, but otherwise rotate freely.

This can be handy for quickly placing objects using physics. For example:

enter image description here

$\endgroup$
2
$\begingroup$

This is currently supported only in the Game Engine.

As a possible workaround, you could bake the simulation to keyframes and then remove the transform channels which you don't want.

$\endgroup$
  • $\begingroup$ Is this answer still valid for 2.69? I have the same question as gandalf3. The slider constraint is too complicated. $\endgroup$ – Wray Bowling Jul 20 '14 at 21:19
  • $\begingroup$ Also your alternative doesn't really work as a solution since the axis restrictions work on the solver per-frame. Disabling rotation on all three axes would prevent a ball from rolling down a hill for example. $\endgroup$ – Wray Bowling Jul 20 '14 at 21:26

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.