space_view3d_copy_attributes.py 文件源码

def getmat(bone, active, context, ignoreparent):
    """Helper function for visual transform copy,
       gets the active transform in bone space
    """
    obj_act = context.active_object
    data_bone = obj_act.data.bones[bone.name]
    #all matrices are in armature space unless commented otherwise
    otherloc = active.matrix  # final 4x4 mat of target, location.
    bonemat_local = data_bone.matrix_local.copy()  # self rest matrix
    if data_bone.parent:
        parentposemat = obj_act.pose.bones[data_bone.parent.name].matrix.copy()
        parentbonemat = data_bone.parent.matrix_local.copy()
    else:
        parentposemat = parentbonemat = Matrix()
    if parentbonemat == parentposemat or ignoreparent:
        newmat = bonemat_local.inverted() * otherloc
    else:
        bonemat = parentbonemat.inverted() * bonemat_local

        newmat = bonemat.inverted() * parentposemat.inverted() * otherloc
    return newmat