blender/scripts/startup/bl_operators/constraint.py
Campbell Barton e955c94ed3 License Headers: Set copyright to "Blender Authors", add AUTHORS
Listing the "Blender Foundation" as copyright holder implied the Blender
Foundation holds copyright to files which may include work from many
developers.

While keeping copyright on headers makes sense for isolated libraries,
Blender's own code may be refactored or moved between files in a way
that makes the per file copyright holders less meaningful.

Copyright references to the "Blender Foundation" have been replaced with
"Blender Authors", with the exception of `./extern/` since these this
contains libraries which are more isolated, any changed to license
headers there can be handled on a case-by-case basis.

Some directories in `./intern/` have also been excluded:

- `./intern/cycles/` it's own `AUTHORS` file is planned.
- `./intern/opensubdiv/`.

An "AUTHORS" file has been added, using the chromium projects authors
file as a template.

Design task: #110784

Ref !110783.
2023-08-16 00:20:26 +10:00

122 lines
3.4 KiB
Python

# SPDX-FileCopyrightText: 2018-2023 Blender Authors
#
# SPDX-License-Identifier: GPL-2.0-or-later
from __future__ import annotations
from bpy.types import (
Operator,
)
from bpy.props import (
IntProperty,
)
class CONSTRAINT_OT_add_target(Operator):
"""Add a target to the constraint"""
bl_idname = "constraint.add_target"
bl_label = "Add Target"
bl_options = {'UNDO', 'INTERNAL'}
@classmethod
def poll(cls, context):
constraint = getattr(context, "constraint", None)
return constraint
def execute(self, context):
context.constraint.targets.new()
return {'FINISHED'}
class CONSTRAINT_OT_remove_target(Operator):
"""Remove the target from the constraint"""
bl_idname = "constraint.remove_target"
bl_label = "Remove Target"
bl_options = {'UNDO', 'INTERNAL'}
index: IntProperty()
@classmethod
def poll(cls, context):
constraint = getattr(context, "constraint", None)
return constraint
def execute(self, context):
tgts = context.constraint.targets
tgts.remove(tgts[self.index])
return {'FINISHED'}
class CONSTRAINT_OT_normalize_target_weights(Operator):
"""Normalize weights of all target bones"""
bl_idname = "constraint.normalize_target_weights"
bl_label = "Normalize Weights"
bl_options = {'UNDO', 'INTERNAL'}
@classmethod
def poll(cls, context):
constraint = getattr(context, "constraint", None)
return constraint
def execute(self, context):
tgts = context.constraint.targets
total = sum(t.weight for t in tgts)
if total > 0:
for t in tgts:
t.weight = t.weight / total
return {'FINISHED'}
class CONSTRAINT_OT_disable_keep_transform(Operator):
"""Set the influence of this constraint to zero while """ \
"""trying to maintain the object's transformation. Other active """ \
"""constraints can still influence the final transformation"""
bl_idname = "constraint.disable_keep_transform"
bl_label = "Disable and Keep Transform"
bl_options = {'UNDO', 'INTERNAL'}
@classmethod
def poll(cls, context):
constraint = getattr(context, "constraint", None)
return constraint and constraint.influence > 0.0
def execute(self, context):
"""Disable constraint while maintaining the visual transform"""
# This works most of the time, but when there are multiple constraints active
# there could still be one that overrides the visual transform.
#
# Note that executing this operator and then increasing the constraint
# influence may move the object; this happens when the constraint is
# additive rather than replacing the transform entirely.
# Get the matrix in world space.
is_bone_constraint = context.space_data.context == 'BONE_CONSTRAINT'
ob = context.object
if is_bone_constraint:
bone = context.pose_bone
mat = ob.matrix_world @ bone.matrix
else:
mat = ob.matrix_world
context.constraint.influence = 0.0
# Set the matrix.
if is_bone_constraint:
bone.matrix = ob.matrix_world.inverted() @ mat
else:
ob.matrix_world = mat
return {'FINISHED'}
classes = (
CONSTRAINT_OT_add_target,
CONSTRAINT_OT_remove_target,
CONSTRAINT_OT_normalize_target_weights,
CONSTRAINT_OT_disable_keep_transform,
)