edit_armature.py 文件源码

def execute(self,context):
        armature = context.active_object
        p_bone = armature.pose.bones[context.active_pose_bone.name]
        bpy.ops.object.mode_set(mode="EDIT")

        bone_name = "Stretch_"+p_bone.name
        stretch_to_bone = armature.data.edit_bones.new(bone_name)
        stretch_to_bone.use_deform = False
        if p_bone.parent != None:
            stretch_to_bone.parent = context.active_object.data.edit_bones[p_bone.name].parent
        length = Vector(p_bone.tail - p_bone.head).length
        stretch_to_bone.head =  p_bone.tail
        stretch_to_bone.tail = Vector((p_bone.tail[0],0, p_bone.tail[2] + length * .5))
        bpy.ops.object.mode_set(mode="POSE")

        stretch_to_constraint = p_bone.constraints.new("STRETCH_TO")
        stretch_to_constraint.target = context.active_object
        stretch_to_constraint.subtarget = bone_name
        stretch_to_constraint.keep_axis = "PLANE_Z" 
        stretch_to_constraint.volume = "VOLUME_X"
        set_bone_group(self, context.active_object, context.active_object.pose.bones[bone_name],group="stretch_to",theme = "THEME07")
        return{'FINISHED'}

######################################################################################################################################### Set IK Constraint