Set the world_matrix of a bone

Question

I need to copy the world matrix of a bone and assign it to another bone. Both have different parents. Pretty much what the copy transforms constraint does, but for a single frame without dependencies, because I need it to be set in a certain frame and then put a loc/rot keyframe there. I am fine with either a script or manual solution (like cursor to selected -> selection to cursor, but for rotations as well)

I found this: Global Pose/Rotation of a bone But that script gives me an error, that the expected matrix would need to be 3x3, if I put mat.to_3x3() behind it, nothing happens at all. Also since both bones in that script share a branch in the hierarchy I'm not sure if it would suit me in the first place. I don't care about scale at all. Thanks

perfect, exactly what I need, I don't know why I didn't find that myself. Thank you. — Frederik Steinmetz, Jun 15 '18 at 10:36

score 1 · Accepted Answer · answered Jun 15 '18 at 10:44

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The link batFINGER provider is the correct answer, just in case someone is wondering: The reason why my bone was expecting a matrix 3x3 is that I used

bone = C.active_bone

the correct way to get the bone is

bone = my_armature.pose.bones['my_bone']

answered Jun 15 '18 at 10:44

Frederik Steinmetz

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Perhaps C.active_pose_bone whist in pose mode, may have been Ok. – batFINGER Jun 15 '18 at 15:46

Set the world_matrix of a bone

1 Answers1