Exporting to Collada: Physics don't get exported

Question

I added basic rigidbody characteristics to a default sphere in Blender and exported it to Collada but the physics information isn't exporting.

How can I get the physics data to be exported along the geometry?

Thanks in advance.

I'm using Blender 2.68.4

EDIT:

As for Blender 2.68.4 there is no support for physics data to COLLADA :(

Althought it seems that there is already a patch to export physics:

This patch was already accepted into upstream so maybe in a near version support for this is added :D

I will leave the question open to notify the ones that favorites this question once this functionality is added.

IN THE MEANTIME:

You can solve this issue by:

Saving the scene with physics in Blender format (.blend)
Importing the .blend file into Unity Engine (free edition)
Use the Unity Collada Exporter to get a fully physics functional COLLADA .dae file.

@gandalf3: Thanks for your comment, unfortunately, what I want is to export the whole scene with its geometry, materials, etc and the models physics as well. How can I do that? — Diosney, Commented Sep 13, 2013 at 23:33
FYI (all readers), I'm guiding diosney into adding physics support to Blender. — jesterKing, Commented Sep 21, 2013 at 23:01

gandalf3 · Accepted Answer · 2013-09-13 07:50:04Z

1

Assuming you want the motion generated by the rigid-body simulation (not the mass and other parameters), you can bake the simulation to keyframes.

There are two ways to do this:

Method one:
In the Tool shelf (N in the 3D view) > Rigid body tools, press Bake to Keyframes:

enter image description here

Method two:
Press 3D view > Header > Object > Animation > Bake action:

enter image description here

answered Sep 13, 2013 at 7:50

gandalf3

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$\begingroup$ @gandalf3: Thanks for your help, unfortunately, what I want is to export the whole scene with its geometry, materials, etc and the models physics as well. How can I do that? $\endgroup$
– Diosney
Commented Sep 13, 2013 at 23:34
$\begingroup$ @gandalf3: The final purpose is to use the scene to be imported in a game engine that supports Collada, but the .dae file exported by Blender doesn't have any physics information :( $\endgroup$
– Diosney
Commented Sep 13, 2013 at 23:35
$\begingroup$ @diosney AFAIK, the COLLADA exporter does not support exporting the physics data (mass, constraints, etc.). You can bake the simulation to a normal animation, (as in my answer) and then export, this will export the animation data as well as geometry. Material exporting is limited, see the wiki. $\endgroup$
– gandalf3
Commented Sep 13, 2013 at 23:42
$\begingroup$ I tested what you suggested but don't worked for me :( $\endgroup$
– Diosney
Commented Sep 14, 2013 at 2:36
$\begingroup$ @diosney How did it not work? (what happened?) $\endgroup$
– gandalf3
Commented Sep 14, 2013 at 2:40

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