5c4b0c98d3
Animation: Adds a new "Parent Space" Orientation option for the Transformation Gizmo. --- For child targets (objects, bones, etc) being able to transform in parent space is a desired feature (especially when it comes to rigging / animation). For objects: * with a parent, the gizmo orients to it's parents orientation * without a parent, the gizmo orients to Global space For Armatures: * Child bone shows parent's space regardless if "Local Location" is set for parent bone * For root bone **without** "Local Location" set, use the armature objects space. * For root bone **with** "Local Location" set, use local bone space. --- No new transformation orientation code needs to be written, we can achieve the desired results be using the existing `transform_orientations_create_from_axis`, `ED_getTransformOrientationMatrix`, and `unit_m3` methods. To do this, we check to see if the bone has a parent, if so, we use the bones pose matrix (`pose_mat`). This is done similarly for objects using the parent's object matrix (`object_to_world`). Pull Request: https://projects.blender.org/blender/blender/pulls/104724
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