How to get a posebones global tail position

Question

I need to write a script, which makes sure, that the tip of my armature never gets under the ground, which will be a flat plane. how would i access the global position of the posebones tail?

Answer 1

If you have your armature object as arm, you can get its n^th bone’s tail local position (i.e. its pose location in armature’s object space) with arm.pose.bones[n].tail, so to get that in world coordinates, just multiply it with the armature’s world matrix: arm.matrix_world * arm.pose.bones[n].tail.

Note however it may be simpler (in simple cases) to use a bone constraint like Floor or Limit Position ones…