Files
test/tests/python/bl_animation_keyframing.py
Christoph Lendenfeld a09d0cfd8c Anim: Move pose bone selection state to bPoseChannel
Move the selection flag for pose bones, from the (edit)bone to the
pose bone.

Previously having multiple instances of armatures in pose mode at the
same time caused issues because selecting a pose bone on one armature
would automatically select it on all instances of it.

This is now fixed since the selection state is stored on the pose bone
(Object level) Doing so breaks API compatibility with 4.5 since the
RNA property on the Bone no longer affects the pose bone. Instead,
there is a new property on the pose bone for that.

Due to this change, some runtime flags for the transform system also
had to be moved to the pose bone. This is due to the fact that these
flags are used by the transform system to pass information between
functions. If we keep the flag at the bone level, this wouldn't work
with armature instances. See `bPoseChannelRuntimeFlag`

Fixes #117892

Pull Request: https://projects.blender.org/blender/blender/pulls/146102
2025-10-07 19:59:36 +02:00

888 lines
36 KiB
Python

# SPDX-FileCopyrightText: 2020-2023 Blender Authors
#
# SPDX-License-Identifier: GPL-2.0-or-later
import unittest
import bpy
import pathlib
import sys
from math import radians
"""
blender -b --factory-startup --python tests/python/bl_animation_keyframing.py -- --testdir /path/to/tests/files/animation
"""
def _fcurve_paths_match(fcurves: list[bpy.types.FCurve], expected_paths: list[str]) -> None:
data_paths = list(set([fcurve.data_path for fcurve in fcurves]))
data_paths.sort()
expected_paths.sort()
if data_paths != expected_paths:
raise AssertionError(
f"Expected paths do not match F-Curve paths. Expected: {expected_paths}. F-Curve: {data_paths}")
def _first_channelbag(action: bpy.types.Action) -> bpy.types.ActionChannelbag:
"""Return the first Channelbag of the Action."""
assert isinstance(action, bpy.types.Action), f"Expected Action, got {action!r}"
return action.layers[0].strips[0].channelbags[0]
def _channelbag(animated_id: bpy.types.ID) -> bpy.types.ActionChannelbag:
"""Return the first layer's Channelbag of the animated ID's Action."""
action = animated_id.animation_data.action
action_slot = animated_id.animation_data.action_slot
channelbag = action.layers[0].strips[0].channelbag(action_slot)
assert channelbag is not None
return channelbag
def _get_view3d_context():
ctx = bpy.context.copy()
for area in bpy.context.window.screen.areas:
if area.type != 'VIEW_3D':
continue
ctx['area'] = area
ctx['space'] = area.spaces.active
break
return ctx
def _get_nla_context():
ctx = bpy.context.copy()
for area in bpy.context.window.screen.areas:
if area.type != 'NLA_EDITOR':
continue
ctx['area'] = area
ctx['space'] = area.spaces.active
break
return ctx
def _create_animation_object():
anim_object = bpy.data.objects.new("anim_object", None)
# Ensure that the rotation mode is correct so we can check against rotation_euler
anim_object.rotation_mode = "XYZ"
bpy.context.scene.collection.objects.link(anim_object)
bpy.context.view_layer.objects.active = anim_object
anim_object.select_set(True)
return anim_object
_BONE_NAME = "bone"
def _create_armature():
armature = bpy.data.armatures.new("anim_armature")
armature_obj = bpy.data.objects.new("anim_object", armature)
bpy.context.scene.collection.objects.link(armature_obj)
bpy.context.view_layer.objects.active = armature_obj
armature_obj.select_set(True)
bpy.ops.object.mode_set(mode='EDIT')
edit_bone = armature.edit_bones.new(_BONE_NAME)
edit_bone.head = (1, 0, 0)
bpy.ops.object.mode_set(mode='POSE')
armature_obj.pose.bones[_BONE_NAME].rotation_mode = "XYZ"
armature_obj.pose.bones[_BONE_NAME].select = True
bpy.ops.object.mode_set(mode='OBJECT')
return armature_obj
def _insert_by_name_test(insert_key: str, expected_paths: list):
keyed_object = _create_animation_object()
with bpy.context.temp_override(**_get_view3d_context()):
bpy.ops.anim.keyframe_insert_by_name(type=insert_key)
_fcurve_paths_match(_channelbag(keyed_object).fcurves, expected_paths)
bpy.data.objects.remove(keyed_object, do_unlink=True)
def _insert_from_user_preference_test(enabled_user_pref_fields: set, expected_paths: list):
keyed_object = _create_animation_object()
bpy.context.preferences.edit.key_insert_channels = enabled_user_pref_fields
with bpy.context.temp_override(**_get_view3d_context()):
bpy.ops.anim.keyframe_insert()
_fcurve_paths_match(_channelbag(keyed_object).fcurves, expected_paths)
bpy.data.objects.remove(keyed_object, do_unlink=True)
def _get_keying_set(scene, name: str):
return scene.keying_sets_all[scene.keying_sets_all.find(name)]
def _insert_with_keying_set_test(keying_set_name: str, expected_paths: list):
scene = bpy.context.scene
keying_set = _get_keying_set(scene, keying_set_name)
scene.keying_sets.active = keying_set
keyed_object = _create_animation_object()
with bpy.context.temp_override(**_get_view3d_context()):
bpy.ops.anim.keyframe_insert()
_fcurve_paths_match(_channelbag(keyed_object).fcurves, expected_paths)
bpy.data.objects.remove(keyed_object, do_unlink=True)
class AbstractKeyframingTest:
def setUp(self):
super().setUp()
bpy.ops.wm.read_homefile(use_factory_startup=True)
class InsertKeyTest(AbstractKeyframingTest, unittest.TestCase):
""" Ensure keying things by name or with a keying set adds the right keys. """
def test_insert_by_name(self):
_insert_by_name_test("Location", ["location"])
_insert_by_name_test("Rotation", ["rotation_euler"])
_insert_by_name_test("Scaling", ["scale"])
_insert_by_name_test("LocRotScale", ["location", "rotation_euler", "scale"])
def test_insert_with_keying_set(self):
_insert_with_keying_set_test("Location", ["location"])
_insert_with_keying_set_test("Rotation", ["rotation_euler"])
_insert_with_keying_set_test("Scale", ["scale"])
_insert_with_keying_set_test("Location, Rotation & Scale", ["location", "rotation_euler", "scale"])
def test_insert_from_user_preferences(self):
_insert_from_user_preference_test({"LOCATION"}, ["location"])
_insert_from_user_preference_test({"ROTATION"}, ["rotation_euler"])
_insert_from_user_preference_test({"SCALE"}, ["scale"])
_insert_from_user_preference_test({"LOCATION", "ROTATION", "SCALE"}, ["location", "rotation_euler", "scale"])
def test_keying_creates_default_groups(self):
keyed_object = _create_animation_object()
bpy.context.preferences.edit.key_insert_channels = {'LOCATION'}
with bpy.context.temp_override(**_get_view3d_context()):
bpy.ops.anim.keyframe_insert()
channelbag = _channelbag(keyed_object)
# Check the F-Curves paths.
expect_paths = ["location", "location", "location"]
actual_paths = [fcurve.data_path for fcurve in channelbag.fcurves]
self.assertEqual(actual_paths, expect_paths)
# The actual reason for this test: check that these curves have the right group.
expect_groups = ["Object Transforms"]
actual_groups = [group.name for group in channelbag.groups]
self.assertEqual(actual_groups, expect_groups)
expect_groups = 3 * [channelbag.groups[0]]
actual_groups = [fcurve.group for fcurve in channelbag.fcurves]
self.assertEqual(actual_groups, expect_groups)
def test_insert_custom_properties(self):
# Used to create a datablock reference property.
ref_object = bpy.data.objects.new("ref_object", None)
bpy.context.scene.collection.objects.link(ref_object)
bpy.context.preferences.edit.key_insert_channels = {"CUSTOM_PROPS"}
keyed_object = _create_animation_object()
keyed_properties = {
"int": 1,
"float": 1.0,
"bool": True,
"int_array": [1, 2, 3],
"float_array": [1.0, 2.0, 3.0],
"bool_array": [True, False, True],
"'escaped'": 1,
'"escaped"': 1
}
unkeyed_properties = {
"str": "unkeyed",
"reference": ref_object,
}
for path, value in keyed_properties.items():
keyed_object[path] = value
for path, value in unkeyed_properties.items():
keyed_object[path] = value
with bpy.context.temp_override(**_get_view3d_context()):
bpy.ops.anim.keyframe_insert()
keyed_rna_paths = [f"[\"{bpy.utils.escape_identifier(path)}\"]" for path in keyed_properties.keys()]
_fcurve_paths_match(_channelbag(keyed_object).fcurves, keyed_rna_paths)
bpy.data.objects.remove(keyed_object, do_unlink=True)
def test_key_selection_state(self):
keyed_object = _create_animation_object()
bpy.context.preferences.edit.key_insert_channels = {"LOCATION"}
with bpy.context.temp_override(**_get_view3d_context()):
bpy.ops.anim.keyframe_insert()
bpy.context.scene.frame_set(5)
bpy.ops.anim.keyframe_insert()
for fcurve in _channelbag(keyed_object).fcurves:
self.assertEqual(len(fcurve.keyframe_points), 2)
self.assertFalse(fcurve.keyframe_points[0].select_control_point)
self.assertTrue(fcurve.keyframe_points[1].select_control_point)
def test_keyframe_insert_py_func(self):
curve_object = _create_animation_object()
# Test on location, which is a 3-item array, without explicitly passing an array index.
self.assertTrue(curve_object.keyframe_insert('location'))
ob_fcurves = _channelbag(curve_object).fcurves
self.assertEqual(len(ob_fcurves), 3,
"Keying 'location' without any array index should have created 3 F-Curves")
self.assertEqual(3 * ['location'], [fcurve.data_path for fcurve in ob_fcurves])
self.assertEqual([0, 1, 2], [fcurve.array_index for fcurve in ob_fcurves])
ob_fcurves.clear()
# Test on 'rotation_quaterion' (4 items), with explicit index=-1.
self.assertTrue(curve_object.keyframe_insert('rotation_quaternion', index=-1))
self.assertEqual(len(ob_fcurves), 4,
"Keying 'rotation_quaternion' with index=-1 should have created 4 F-Curves")
self.assertEqual(4 * ['rotation_quaternion'], [fcurve.data_path for fcurve in ob_fcurves])
self.assertEqual([0, 1, 2, 3], [fcurve.array_index for fcurve in ob_fcurves])
ob_fcurves.clear()
# Test on 'scale' (3 items) with explicit index=1.
self.assertTrue(curve_object.keyframe_insert('scale', index=2))
self.assertEqual(len(ob_fcurves), 1,
"Keying 'scale' with index=2 should have created 1 F-Curve")
self.assertEqual('scale', ob_fcurves[0].data_path)
self.assertEqual(2, ob_fcurves[0].array_index)
def test_keyframe_insert_py_func_with_group(self):
curve_object = _create_animation_object()
# Test with property for which Blender knows a group name too ('Object Transforms').
self.assertTrue(curve_object.keyframe_insert('location', group="Téšt"))
channelbag = _channelbag(curve_object)
fcurves = channelbag.fcurves
fgroups = channelbag.groups
self.assertEqual(3 * ['location'], [fcurve.data_path for fcurve in fcurves])
self.assertEqual([0, 1, 2], [fcurve.array_index for fcurve in fcurves])
self.assertEqual(["Téšt"], [group.name for group in fgroups])
self.assertEqual(3 * ["Téšt"], [fcurve.group and fcurve.group.name for fcurve in fcurves])
fcurves.clear()
while fgroups:
fgroups.remove(fgroups[0])
# Test with property that does not have predefined group name.
self.assertTrue(curve_object.keyframe_insert('show_wire', group="Téšt"))
self.assertEqual('show_wire', fcurves[0].data_path)
self.assertEqual(["Téšt"], [group.name for group in fgroups])
def test_keyframe_insert_nested_rna_path(self):
bpy.ops.mesh.primitive_cube_add()
obj = bpy.context.object
obj.data.attributes.new("test", "FLOAT", "POINT")
self.assertTrue(obj.data.keyframe_insert('attributes["test"].data[0].value'))
fcurves = _channelbag(obj.data).fcurves
self.assertEqual(len(fcurves), 1)
self.assertEqual(fcurves[0].data_path, 'attributes["test"].data[0].value')
class VisualKeyingTest(AbstractKeyframingTest, unittest.TestCase):
""" Check if visual keying produces the correct keyframe values. """
def tearDown(self):
super().tearDown()
bpy.context.preferences.edit.use_visual_keying = False
def test_visual_location_keying_set(self):
t_value = 1
target = _create_animation_object()
target.location = (t_value, t_value, t_value)
constrained = _create_animation_object()
constraint = constrained.constraints.new("COPY_LOCATION")
constraint.target = target
with bpy.context.temp_override(**_get_view3d_context()):
bpy.ops.anim.keyframe_insert_by_name(type="BUILTIN_KSI_VisualLoc")
for fcurve in _channelbag(constrained).fcurves:
self.assertEqual(fcurve.keyframe_points[0].co.y, t_value)
def test_visual_rotation_keying_set(self):
rot_value_deg = 45
rot_value_rads = radians(rot_value_deg)
target = _create_animation_object()
target.rotation_euler = (rot_value_rads, rot_value_rads, rot_value_rads)
constrained = _create_animation_object()
constraint = constrained.constraints.new("COPY_ROTATION")
constraint.target = target
with bpy.context.temp_override(**_get_view3d_context()):
bpy.ops.anim.keyframe_insert_by_name(type="BUILTIN_KSI_VisualRot")
for fcurve in _channelbag(constrained).fcurves:
self.assertAlmostEqual(fcurve.keyframe_points[0].co.y, rot_value_rads, places=4)
def test_visual_location_user_pref_override(self):
# When enabling the user preference setting,
# the normal keying sets behave like their visual keying set counterpart.
bpy.context.preferences.edit.use_visual_keying = True
t_value = 1
target = _create_animation_object()
target.location = (t_value, t_value, t_value)
constrained = _create_animation_object()
constraint = constrained.constraints.new("COPY_LOCATION")
constraint.target = target
with bpy.context.temp_override(**_get_view3d_context()):
bpy.ops.anim.keyframe_insert_by_name(type="Location")
for fcurve in _channelbag(constrained).fcurves:
self.assertEqual(fcurve.keyframe_points[0].co.y, t_value)
def test_visual_location_user_pref(self):
target = _create_animation_object()
t_value = 1
target.location = (t_value, t_value, t_value)
constrained = _create_animation_object()
constraint = constrained.constraints.new("COPY_LOCATION")
constraint.target = target
bpy.context.preferences.edit.use_visual_keying = True
bpy.context.preferences.edit.key_insert_channels = {"LOCATION"}
with bpy.context.temp_override(**_get_view3d_context()):
bpy.ops.anim.keyframe_insert()
for fcurve in _channelbag(constrained).fcurves:
self.assertEqual(fcurve.keyframe_points[0].co.y, t_value)
class CycleAwareKeyingTest(AbstractKeyframingTest, unittest.TestCase):
""" Check if cycle aware keying remaps the keyframes correctly and adds fcurve modifiers. """
def setUp(self):
super().setUp()
bpy.context.scene.tool_settings.use_keyframe_cycle_aware = True
# Deselect the default cube, because this test works on a specific
# object. Operators that work on all selected objects shouldn't work on
# anything else but that object.
bpy.ops.object.select_all(action='DESELECT')
def tearDown(self):
bpy.context.scene.tool_settings.use_keyframe_cycle_aware = False
super().tearDown()
def test_insert_by_name(self):
# In order to make cycle aware keying work, the action needs to be created and have the
# frame_range set plus the use_frame_range flag set to True.
keyed_object = _create_animation_object()
with bpy.context.temp_override(**_get_view3d_context()):
bpy.ops.anim.keyframe_insert_by_name(type="Location")
action = keyed_object.animation_data.action
action.use_cyclic = True
action.use_frame_range = True
action.frame_range = [1, 20]
with bpy.context.temp_override(**_get_view3d_context()):
bpy.context.scene.frame_set(5)
bpy.ops.anim.keyframe_insert_by_name(type="Location")
# Will be mapped to frame 3.
bpy.context.preferences.edit.key_insert_channels = {"LOCATION"}
bpy.context.scene.frame_set(22)
bpy.ops.anim.keyframe_insert_by_name(type="Location")
# Will be mapped to frame 9.
bpy.context.scene.frame_set(-10)
bpy.ops.anim.keyframe_insert_by_name(type="Location")
# Check that only location keys have been created.
channelbag = action.layers[0].strips[0].channelbags[0]
_fcurve_paths_match(channelbag.fcurves, ["location"])
expected_keys = [1.0, 3.0, 5.0, 9.0, 20.0]
for fcurve in channelbag.fcurves:
actual_keys = [key.co.x for key in fcurve.keyframe_points]
self.assertEqual(expected_keys, actual_keys)
# All fcurves should have a cycles modifier.
self.assertTrue(fcurve.modifiers[0].type == "CYCLES")
def test_insert_key(self):
keyed_object = _create_animation_object()
bpy.context.preferences.edit.key_insert_channels = {'LOCATION'}
with bpy.context.temp_override(**_get_view3d_context()):
bpy.ops.anim.keyframe_insert()
action = keyed_object.animation_data.action
action.use_cyclic = True
action.use_frame_range = True
action.frame_range = [1, 20]
with bpy.context.temp_override(**_get_view3d_context()):
bpy.context.scene.frame_set(5)
bpy.ops.anim.keyframe_insert()
# Will be mapped to frame 3.
bpy.context.scene.frame_set(22)
bpy.ops.anim.keyframe_insert()
expected_keys = [1.0, 3.0, 5.0, 20.0]
channelbag = action.layers[0].strips[0].channelbags[0]
for fcurve in channelbag.fcurves:
actual_keys = [key.co.x for key in fcurve.keyframe_points]
self.assertEqual(expected_keys, actual_keys)
# All fcurves should have a cycles modifier.
self.assertTrue(fcurve.modifiers[0].type == "CYCLES")
class AutoKeyframingTest(AbstractKeyframingTest, unittest.TestCase):
def setUp(self):
super().setUp()
bpy.context.scene.tool_settings.use_keyframe_insert_auto = True
bpy.context.preferences.edit.use_keyframe_insert_available = False
bpy.context.preferences.edit.use_keyframe_insert_needed = False
bpy.context.preferences.edit.use_auto_keyframe_insert_needed = False
def tearDown(self):
super().tearDown()
bpy.context.scene.tool_settings.use_keyframe_insert_auto = False
def test_autokey_basic(self):
keyed_object = _create_animation_object()
with bpy.context.temp_override(**_get_view3d_context()):
bpy.ops.transform.translate(value=(1, 0, 0))
channelbag = _channelbag(keyed_object)
_fcurve_paths_match(channelbag.fcurves, ["location", "rotation_euler", "scale"])
def test_autokey_bone(self):
armature_obj = _create_armature()
bpy.ops.object.mode_set(mode='POSE')
# Not overriding the context because it would mean context.selected_pose_bones is empty
# resulting in a failure to move/key the bone
bpy.ops.transform.translate(value=(1, 0, 0))
bpy.ops.object.mode_set(mode='OBJECT')
channelbag = _channelbag(armature_obj)
bone_path = f"pose.bones[\"{_BONE_NAME}\"]"
expected_paths = [f"{bone_path}.location", f"{bone_path}.rotation_euler", f"{bone_path}.scale"]
_fcurve_paths_match(channelbag.fcurves, expected_paths)
def test_key_selection_state(self):
armature_obj = _create_armature()
bpy.ops.object.mode_set(mode='POSE')
bpy.ops.transform.translate(value=(1, 0, 0))
bpy.context.scene.frame_set(5)
bpy.ops.transform.translate(value=(0, 1, 0))
bpy.ops.object.mode_set(mode='OBJECT')
channelbag = _channelbag(armature_obj)
for fcurve in channelbag.fcurves:
self.assertEqual(len(fcurve.keyframe_points), 2)
self.assertFalse(fcurve.keyframe_points[0].select_control_point)
self.assertTrue(fcurve.keyframe_points[1].select_control_point)
class InsertAvailableTest(AbstractKeyframingTest, unittest.TestCase):
def setUp(self):
super().setUp()
bpy.context.scene.tool_settings.use_keyframe_insert_auto = True
bpy.context.preferences.edit.use_keyframe_insert_available = True
bpy.context.preferences.edit.use_keyframe_insert_needed = False
bpy.context.preferences.edit.use_auto_keyframe_insert_needed = False
def tearDown(self):
super().tearDown()
bpy.context.scene.tool_settings.use_keyframe_insert_auto = False
bpy.context.preferences.edit.use_keyframe_insert_available = False
def test_autokey_available_object(self):
keyed_object = _create_animation_object()
with bpy.context.temp_override(**_get_view3d_context()):
bpy.context.scene.frame_set(1)
bpy.ops.anim.keyframe_insert_by_name(type="Rotation")
bpy.context.scene.frame_set(5)
bpy.ops.transform.translate(value=(1, 0, 0))
# Test that no new keyframes have been added.
channelbag = _channelbag(keyed_object)
_fcurve_paths_match(channelbag.fcurves, ["rotation_euler"])
with bpy.context.temp_override(**_get_view3d_context()):
bpy.context.scene.frame_set(1)
bpy.ops.anim.keyframe_insert_by_name(type="Location")
bpy.context.scene.frame_set(5)
bpy.ops.transform.translate(value=(1, 0, 0))
channelbag = _channelbag(keyed_object)
_fcurve_paths_match(channelbag.fcurves, ["location", "rotation_euler"])
for fcurve in channelbag.fcurves:
# Translating the bone would also add rotation keys as long as "Only Insert Needed" is off.
if "location" in fcurve.data_path or "rotation" in fcurve.data_path:
self.assertEqual(len(fcurve.keyframe_points), 2)
else:
raise AssertionError(f"Did not expect keys other than location and rotation, got {fcurve.data_path}.")
def test_autokey_available_bone(self):
armature_obj = _create_armature()
bpy.ops.object.mode_set(mode='POSE')
with bpy.context.temp_override(**_get_view3d_context()):
bpy.context.scene.frame_set(1)
bpy.ops.anim.keyframe_insert_by_name(type="Rotation")
bpy.context.scene.frame_set(5)
bpy.ops.transform.translate(value=(1, 0, 0))
# Test that no new keyframes have been added.
channelbag = _channelbag(armature_obj)
bone_path = f"pose.bones[\"{_BONE_NAME}\"]"
expected_paths = [f"{bone_path}.rotation_euler"]
_fcurve_paths_match(channelbag.fcurves, expected_paths)
with bpy.context.temp_override(**_get_view3d_context()):
bpy.context.scene.frame_set(1)
bpy.ops.anim.keyframe_insert_by_name(type="Location")
bpy.context.scene.frame_set(5)
bpy.ops.transform.translate(value=(1, 0, 0))
expected_paths = [f"{bone_path}.location", f"{bone_path}.rotation_euler"]
_fcurve_paths_match(channelbag.fcurves, expected_paths)
for fcurve in channelbag.fcurves:
# Translating the bone would also add rotation keys as long as "Only Insert Needed" is off.
if "location" in fcurve.data_path or "rotation" in fcurve.data_path:
self.assertEqual(len(fcurve.keyframe_points), 2)
else:
raise AssertionError(f"Did not expect keys other than location and rotation, got {fcurve.data_path}.")
def test_insert_available_keying_set(self):
keyed_object = _create_animation_object()
with bpy.context.temp_override(**_get_view3d_context()):
self.assertRaises(RuntimeError, bpy.ops.anim.keyframe_insert_by_name, type="Available")
self.assertIsNone(keyed_object.animation_data)
with bpy.context.temp_override(**_get_view3d_context()):
bpy.context.scene.frame_set(1)
bpy.ops.anim.keyframe_insert_by_name(type="Location")
bpy.context.scene.frame_set(5)
bpy.ops.anim.keyframe_insert_by_name(type="Available")
channelbag = _channelbag(keyed_object)
_fcurve_paths_match(channelbag.fcurves, ["location"])
for fcurve in channelbag.fcurves:
self.assertEqual(len(fcurve.keyframe_points), 2)
def test_insert_available(self):
keyed_object = _create_animation_object()
self.assertIsNone(keyed_object.animation_data, "Precondition check: test object should not have animdata yet")
keyed_ok = keyed_object.keyframe_insert("location", options={'INSERTKEY_AVAILABLE'})
self.assertFalse(keyed_ok, "Should not key with INSERTKEY_AVAILABLE when no F-Curves are available")
class InsertNeededTest(AbstractKeyframingTest, unittest.TestCase):
def setUp(self):
super().setUp()
bpy.context.scene.tool_settings.use_keyframe_insert_auto = True
bpy.context.preferences.edit.use_keyframe_insert_needed = True
bpy.context.preferences.edit.use_auto_keyframe_insert_needed = True
bpy.context.preferences.edit.use_keyframe_insert_available = False
def tearDown(self):
super().tearDown()
bpy.context.scene.tool_settings.use_keyframe_insert_auto = False
bpy.context.preferences.edit.use_keyframe_insert_needed = False
bpy.context.preferences.edit.use_auto_keyframe_insert_needed = False
def test_insert_needed_object(self):
keyed_object = _create_animation_object()
with bpy.context.temp_override(**_get_view3d_context()):
bpy.context.scene.frame_set(1)
bpy.ops.transform.translate(value=(-1, 0, 0))
bpy.context.scene.frame_set(5)
bpy.ops.transform.translate(value=(1, 0, 0))
channelbag = _channelbag(keyed_object)
_fcurve_paths_match(channelbag.fcurves, ["location"])
# With "Insert Needed" enabled it has to key all location channels first,
# before it can add keys only to the channels where values have actually
# changed.
expected_keys = {
"location": (2, 1, 1)
}
self.assertEqual(len(channelbag.fcurves), 3)
for fcurve in channelbag.fcurves:
if fcurve.data_path not in expected_keys:
raise AssertionError(f"Did not expect a key on {fcurve.data_path}")
self.assertEqual(expected_keys[fcurve.data_path][fcurve.array_index], len(fcurve.keyframe_points))
def test_insert_needed_bone(self):
armature_obj = _create_armature()
bpy.ops.object.mode_set(mode='POSE')
with bpy.context.temp_override(**_get_view3d_context()):
bpy.context.scene.frame_set(1)
bpy.ops.transform.translate(value=(-1, 0, 0), orient_type='LOCAL')
bpy.context.scene.frame_set(5)
bpy.ops.transform.translate(value=(1, 0, 0), orient_type='LOCAL')
bpy.ops.object.mode_set(mode='OBJECT')
channelbag = _channelbag(armature_obj)
bone_path = f"pose.bones[\"{_BONE_NAME}\"]"
_fcurve_paths_match(channelbag.fcurves, [f"{bone_path}.location"])
# With "Insert Needed" enabled it has to key all location channels first,
# before it can add keys only to the channels where values have actually
# changed.
expected_keys = {
f"{bone_path}.location": (2, 1, 1)
}
self.assertEqual(len(channelbag.fcurves), 3)
for fcurve in channelbag.fcurves:
if fcurve.data_path not in expected_keys:
raise AssertionError(f"Did not expect a key on {fcurve.data_path}")
self.assertEqual(expected_keys[fcurve.data_path][fcurve.array_index], len(fcurve.keyframe_points))
def _create_nla_anim_object():
"""
Creates an object with 3 NLA tracks each with a strip that has its own action.
The middle layer is additive.
Creates a key on frame 0 and frame 10 for each of them.
The values are:
top: 0, 0
add: 0, 1
base: 0, 1
"""
anim_object = bpy.data.objects.new("anim_object", None)
def _ensure_fcurve(action: bpy.types.Action, *, data_path: str, index: int) -> bpy.types.FCurve:
# Briefly directly assign the Action so that Blender knows what to do.
anim_object.animation_data_create().action = action
try:
fcurve = action.fcurve_ensure_for_datablock(anim_object, data_path=data_path, index=index)
finally:
anim_object.animation_data.action = None
return fcurve
bpy.context.scene.collection.objects.link(anim_object)
bpy.context.view_layer.objects.active = anim_object
anim_object.select_set(True)
anim_object.animation_data_create()
track = anim_object.animation_data.nla_tracks.new()
track.name = "base"
action_base = bpy.data.actions.new(name="action_base")
fcu = _ensure_fcurve(action_base, data_path="location", index=0)
fcu.keyframe_points.insert(0, value=0).interpolation = 'LINEAR'
fcu.keyframe_points.insert(10, value=1).interpolation = 'LINEAR'
track.strips.new("base_strip", 0, action_base)
assert action_base.is_action_layered
track = anim_object.animation_data.nla_tracks.new()
track.name = "add"
action_add = bpy.data.actions.new(name="action_add")
fcu = _ensure_fcurve(action_add, data_path="location", index=0)
fcu.keyframe_points.insert(0, value=0).interpolation = 'LINEAR'
fcu.keyframe_points.insert(10, value=1).interpolation = 'LINEAR'
strip = track.strips.new("add_strip", 0, action_add)
strip.blend_type = "ADD"
assert action_add.is_action_layered
track = anim_object.animation_data.nla_tracks.new()
track.name = "top"
action_top = bpy.data.actions.new(name="action_top")
fcu = _ensure_fcurve(action_top, data_path="location", index=0)
fcu.keyframe_points.insert(0, value=0).interpolation = 'LINEAR'
fcu.keyframe_points.insert(10, value=0).interpolation = 'LINEAR'
track.strips.new("top_strip", 0, action_top)
assert action_top.is_action_layered
return anim_object
class NlaInsertTest(AbstractKeyframingTest, unittest.TestCase):
"""
Testing inserting keys into an NLA stack.
The system is expected to remap the inserted values based on the strips blend_type.
"""
def setUp(self):
super().setUp()
bpy.context.preferences.edit.key_insert_channels = {'LOCATION'}
# Change one area to the NLA so we can call operators in it.
# Assumes there is at least one editor in the blender default startup file that is not the 3D viewport.
for area in bpy.context.window.screen.areas:
if area.type == 'VIEW_3D':
continue
area.type = "NLA_EDITOR"
break
# Deselect the default cube, because the NLA tests work on a specific
# object created for that test. Operators that work on all selected
# objects shouldn't work on anything else but that object.
bpy.ops.object.select_all(action='DESELECT')
def test_insert_failure(self):
# If the topmost track is set to "REPLACE" the system will fail
# when trying to insert keys into a layer beneath.
nla_anim_object = _create_nla_anim_object()
tracks = nla_anim_object.animation_data.nla_tracks
with bpy.context.temp_override(**_get_nla_context()):
bpy.ops.nla.select_all(action="DESELECT")
tracks.active = tracks["base"]
tracks["base"].strips[0].select = True
bpy.ops.nla.tweakmode_enter(use_upper_stack_evaluation=True)
with bpy.context.temp_override(**_get_view3d_context()):
bpy.context.scene.frame_set(5)
bpy.ops.anim.keyframe_insert()
base_action = bpy.data.actions["action_base"]
channelbag = _first_channelbag(base_action)
# Location X should not have been able to insert a keyframe because the top strip is overriding the result completely,
# making it impossible to calculate which value should be inserted.
self.assertEqual(len(channelbag.fcurves.find("location", index=0).keyframe_points), 2)
# Location Y and Z will go through since they have not been defined in the action of the top strip.
self.assertEqual(len(channelbag.fcurves.find("location", index=1).keyframe_points), 1)
self.assertEqual(len(channelbag.fcurves.find("location", index=2).keyframe_points), 1)
def test_insert_additive(self):
nla_anim_object = _create_nla_anim_object()
tracks = nla_anim_object.animation_data.nla_tracks
self.assertEqual(nla_anim_object, bpy.context.active_object)
self.assertEqual(None, nla_anim_object.animation_data.action)
# This leaves the additive track as the topmost track with influence
tracks["top"].mute = True
with bpy.context.temp_override(**_get_nla_context()):
bpy.ops.nla.select_all(action="DESELECT")
tracks.active = tracks["base"]
tracks["base"].strips[0].select = True
bpy.ops.nla.tweakmode_enter(use_upper_stack_evaluation=True)
base_action = bpy.data.actions["action_base"]
# Verify that tweak mode has switched to the correct Action.
self.assertEqual(base_action, nla_anim_object.animation_data.action)
# Inserting over the existing keyframe.
bpy.context.scene.frame_set(10)
with bpy.context.temp_override(**_get_view3d_context()):
bpy.ops.anim.keyframe_insert()
# Check that the expected F-Curves exist.
channelbag = _first_channelbag(base_action)
fcurves_actual = {(f.data_path, f.array_index) for f in channelbag.fcurves}
fcurves_expect = {
("location", 0),
("location", 1),
("location", 2),
}
self.assertEqual(fcurves_actual, fcurves_expect)
# This should have added keys to Y and Z but not X.
# X already had two keys from the file setup.
self.assertEqual(len(channelbag.fcurves.find("location", index=0).keyframe_points), 2)
self.assertEqual(len(channelbag.fcurves.find("location", index=1).keyframe_points), 1)
self.assertEqual(len(channelbag.fcurves.find("location", index=2).keyframe_points), 1)
# The keyframe value should not be changed even though the position of the
# object is modified by the additive layer.
self.assertAlmostEqual(nla_anim_object.location.x, 2.0, 8)
fcurve_loc_x = channelbag.fcurves.find("location", index=0)
self.assertAlmostEqual(fcurve_loc_x.keyframe_points[-1].co[1], 1.0, 8)
class KeyframeDeleteTest(AbstractKeyframingTest, unittest.TestCase):
def test_delete_in_v3d_pose_mode(self):
armature = _create_armature()
bpy.context.scene.frame_set(1)
with bpy.context.temp_override(**_get_view3d_context()):
bpy.ops.anim.keyframe_insert_by_name(type="Location")
self.assertTrue(armature.animation_data is not None)
self.assertTrue(armature.animation_data.action is not None)
channelbag = _channelbag(armature)
self.assertEqual(len(channelbag.fcurves), 3)
bpy.ops.object.mode_set(mode='POSE')
with bpy.context.temp_override(**_get_view3d_context()):
bpy.ops.anim.keyframe_insert_by_name(type="Location")
bpy.context.scene.frame_set(5)
bpy.ops.anim.keyframe_insert_by_name(type="Location")
# This should have added new FCurves for the pose bone.
self.assertEqual(len(channelbag.fcurves), 6)
bpy.ops.anim.keyframe_delete_v3d()
# No Fcurves should yet be deleted.
self.assertEqual(len(channelbag.fcurves), 6)
self.assertEqual(len(channelbag.fcurves[0].keyframe_points), 1)
bpy.context.scene.frame_set(1)
bpy.ops.anim.keyframe_delete_v3d()
# This should leave the object level keyframes of the armature
self.assertEqual(len(channelbag.fcurves), 3)
bpy.ops.object.mode_set(mode='OBJECT')
with bpy.context.temp_override(**_get_view3d_context()):
bpy.ops.anim.keyframe_delete_v3d()
# The last FCurves should be deleted from the object now.
self.assertEqual(len(channelbag.fcurves), 0)
def main():
global args
import argparse
if '--' in sys.argv:
argv = [sys.argv[0]] + sys.argv[sys.argv.index('--') + 1:]
else:
argv = sys.argv
parser = argparse.ArgumentParser()
parser.add_argument('--testdir', required=True, type=pathlib.Path)
args, remaining = parser.parse_known_args(argv)
unittest.main(argv=remaining)
if __name__ == "__main__":
main()