bcd0d14943
This implements versioning code to go from legacy to layered action. The versioning is only triggered when the experimental flag for Multi-Slot actions is enabled. All the actions are converted in place, which should be fine because of backwards and forwards compatibility with layered actions. Pull Request: https://projects.blender.org/blender/blender/pulls/127842
543 lines
22 KiB
Python
543 lines
22 KiB
Python
# SPDX-FileCopyrightText: 2020-2023 Blender Authors
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#
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# SPDX-License-Identifier: GPL-2.0-or-later
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import unittest
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import sys
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import pathlib
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import bpy
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"""
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blender -b --factory-startup --python tests/python/bl_animation_action.py
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"""
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def enable_experimental_animation_baklava():
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bpy.context.preferences.view.show_developer_ui = True
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bpy.context.preferences.experimental.use_animation_baklava = True
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def disable_experimental_animation_baklava():
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bpy.context.preferences.view.show_developer_ui = False
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bpy.context.preferences.experimental.use_animation_baklava = False
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class ActionSlotAssignmentTest(unittest.TestCase):
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"""Test assigning actions & check reference counts."""
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def setUp(self) -> None:
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bpy.ops.wm.read_homefile(use_factory_startup=True)
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enable_experimental_animation_baklava()
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def test_action_assignment(self):
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# Create new Action.
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action = bpy.data.actions.new('TestAction')
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self.assertEqual(0, action.users)
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# Assign the animation to the cube,
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cube = bpy.data.objects['Cube']
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cube_adt = cube.animation_data_create()
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cube_adt.action = action
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self.assertEqual(1, action.users)
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# Assign the animation to the camera as well.
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camera = bpy.data.objects['Camera']
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camera_adt = camera.animation_data_create()
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camera_adt.action = action
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self.assertEqual(2, action.users)
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# Unassigning should decrement the user count.
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cube_adt.action = None
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self.assertEqual(1, action.users)
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# Deleting the camera should also decrement the user count.
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bpy.data.objects.remove(camera)
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self.assertEqual(0, action.users)
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def test_slot_assignment(self):
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# Create new Action.
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action = bpy.data.actions.new('TestAction')
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self.assertEqual(0, action.users)
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# Assign the Action to the cube,
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cube = bpy.data.objects['Cube']
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cube_adt = cube.animation_data_create()
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cube_adt.action = action
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slot_cube = action.slots.new(for_id=cube)
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cube_adt.action_slot_handle = slot_cube.handle
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self.assertEqual(cube_adt.action_slot_handle, slot_cube.handle)
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# Assign the Action to the camera as well.
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camera = bpy.data.objects['Camera']
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slot_camera = action.slots.new(for_id=camera)
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camera_adt = camera.animation_data_create()
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camera_adt.action = action
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self.assertEqual(camera_adt.action_slot_handle, slot_camera.handle)
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# Unassigning should keep the slot name.
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cube_adt.action = None
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self.assertEqual(cube_adt.action_slot_name, slot_cube.name)
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# It should not be possible to set the slot handle while the Action is unassigned.
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slot_extra = action.slots.new()
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cube_adt.action_slot_handle = slot_extra.handle
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self.assertNotEqual(cube_adt.action_slot_handle, slot_extra.handle)
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# Slots from another Action should be gracefully rejected.
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other_action = bpy.data.actions.new("That Other Action")
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slot = other_action.slots.new()
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cube_adt.action = action
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cube_adt.action_slot = slot_cube
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with self.assertRaises(RuntimeError):
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cube_adt.action_slot = slot
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self.assertEqual(cube_adt.action_slot, slot_cube, "The slot should not have changed")
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class LimitationsTest(unittest.TestCase):
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"""Test artificial limitations for the layered Action.
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Certain limitations are in place to keep development & testing focused.
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"""
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def setUp(self):
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anims = bpy.data.actions
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while anims:
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anims.remove(anims[0])
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def test_initial_layers(self):
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"""Test that upon creation an Action has no layers/strips."""
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action = bpy.data.actions.new('TestAction')
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self.assertEqual([], action.layers[:])
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def test_limited_layers_strips(self):
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"""Test that there can only be one layer with one strip."""
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action = bpy.data.actions.new('TestAction')
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layer = action.layers.new(name="Layer")
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self.assertEqual([], layer.strips[:])
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strip = layer.strips.new(type='KEYFRAME')
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# Adding a 2nd layer should be forbidden.
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with self.assertRaises(RuntimeError):
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action.layers.new(name="Forbidden Layer")
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self.assertEqual([layer], action.layers[:])
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# Adding a 2nd strip should be forbidden.
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with self.assertRaises(RuntimeError):
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layer.strips.new(type='KEYFRAME')
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self.assertEqual([strip], layer.strips[:])
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def test_limited_strip_api(self):
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"""Test that strips have no frame start/end/offset properties."""
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action = bpy.data.actions.new('TestAction')
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layer = action.layers.new(name="Layer")
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strip = layer.strips.new(type='KEYFRAME')
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self.assertFalse(hasattr(strip, 'frame_start'))
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self.assertFalse(hasattr(strip, 'frame_end'))
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self.assertFalse(hasattr(strip, 'frame_offset'))
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class LegacyAPIOnLayeredActionTest(unittest.TestCase):
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"""Test that the legacy Action API works on layered Actions.
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It should give access to the keyframes for the first slot.
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- curve_frame_range
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- fcurves
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- groups
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- id_root (should always be 0 for layered Actions)
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- flip_with_pose(object)
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"""
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def setUp(self) -> None:
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bpy.ops.wm.read_homefile(use_factory_startup=True)
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enable_experimental_animation_baklava()
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self.action = bpy.data.actions.new('LayeredAction')
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def test_fcurves_on_layered_action(self) -> None:
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slot = self.action.slots.new(for_id=bpy.data.objects['Cube'])
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layer = self.action.layers.new(name="Layer")
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strip = layer.strips.new(type='KEYFRAME')
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channelbag = strip.channelbags.new(slot=slot)
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# Create new F-Curves via legacy API, they should be stored on the ChannelBag.
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fcurve1 = self.action.fcurves.new("scale", index=1)
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fcurve2 = self.action.fcurves.new("scale", index=2)
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self.assertEqual([fcurve1, fcurve2], channelbag.fcurves[:], "Expected two F-Curves after creating them")
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self.assertEqual([fcurve1, fcurve2], self.action.fcurves[:],
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"Expected the same F-Curves on the legacy API")
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# Find an F-Curve.
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self.assertEqual(fcurve2, self.action.fcurves.find("scale", index=2))
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# Create an already-existing F-Curve.
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try:
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self.action.fcurves.new("scale", index=2)
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except RuntimeError as ex:
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self.assertIn("F-Curve 'scale[2]' already exists in action 'LayeredAction'", str(ex))
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else:
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self.fail("expected RuntimeError not thrown")
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self.assertEqual([fcurve1, fcurve2], channelbag.fcurves[:],
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"Expected two F-Curves after failing to create a third")
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self.assertEqual([fcurve1, fcurve2], self.action.fcurves[:])
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# Remove a single F-Curve.
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self.action.fcurves.remove(fcurve1)
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self.assertEqual([fcurve2], channelbag.fcurves[:], "Expected single F-Curve after removing one")
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self.assertEqual([fcurve2], self.action.fcurves[:])
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# Clear all F-Curves (with multiple F-Curves to avoid the trivial case).
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self.action.fcurves.new("scale", index=3)
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self.action.fcurves.clear()
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self.assertEqual([], channelbag.fcurves[:], "Expected empty fcurves list after clearing")
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self.assertEqual([], self.action.fcurves[:])
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def test_fcurves_clear_should_not_create_layers(self):
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self.action.fcurves.clear()
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self.assertEqual([], self.action.slots[:])
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self.assertEqual([], self.action.layers[:])
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def test_fcurves_new_on_empty_action(self) -> None:
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# Create new F-Curves via legacy API, this should create a layer+strip+ChannelBag.
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fcurve1 = self.action.fcurves.new("scale", index=1)
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fcurve2 = self.action.fcurves.new("scale", index=2)
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self.assertEqual(1, len(self.action.slots))
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self.assertEqual(1, len(self.action.layers))
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slot = self.action.slots[0]
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layer = self.action.layers[0]
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self.assertEqual(1, len(layer.strips))
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strip = layer.strips[0]
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self.assertEqual('KEYFRAME', strip.type)
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self.assertEqual(1, len(strip.channelbags))
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channelbag = strip.channelbags[0]
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self.assertEqual(channelbag.slot_handle, slot.handle)
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self.assertEqual([fcurve1, fcurve2], channelbag.fcurves[:])
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# After this, there is no need to test the rest of the functions, as the
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# Action will be in the same state as in test_fcurves_on_layered_action().
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def test_groups(self) -> None:
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# Create a group by using the legacy API to create an F-Curve with group name.
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group_name = "Object Transfoibles"
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self.action.fcurves.new("scale", index=1, action_group=group_name)
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layer = self.action.layers[0]
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strip = layer.strips[0]
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channelbag = strip.channelbags[0]
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self.assertEqual(1, len(channelbag.groups), "The new group should be available on the channelbag")
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self.assertEqual(group_name, channelbag.groups[0].name)
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self.assertEqual(1, len(self.action.groups), "The new group should be available with the legacy group API")
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self.assertEqual(group_name, self.action.groups[0].name)
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# Create a group via the legacy API.
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group = self.action.groups.new(group_name)
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self.assertEqual("{}.001".format(group_name), group.name, "The group should have a unique name")
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self.assertEqual(group, self.action.groups[1], "The group should be accessible via the legacy API")
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self.assertEqual(group, channelbag.groups[1], "The group should be accessible via the channelbag")
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# Remove a group via the legacy API.
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self.action.groups.remove(group)
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self.assertNotIn(group, self.action.groups[:], "A group should be removable via the legacy API")
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self.assertNotIn(group, channelbag.groups[:], "A group should be removable via the legacy API")
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class TestLegacyLayered(unittest.TestCase):
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"""Test boundaries between legacy & layered Actions.
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Layered functionality should not be available on legacy actions.
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"""
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def test_legacy_action(self) -> None:
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"""Test layered operations on a legacy Action"""
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# Disable Baklava's backward-compatibility with the legacy API to create an actual legacy Action.
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disable_experimental_animation_baklava()
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act = bpy.data.actions.new('LegacyAction')
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act.fcurves.new("location", index=0) # Add an FCurve to make this a non-empty legacy Action.
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self.assertTrue(act.is_action_legacy)
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self.assertFalse(act.is_action_layered)
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self.assertFalse(act.is_empty)
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# Adding a layer should be prevented.
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with self.assertRaises(RuntimeError):
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act.layers.new("laagje")
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self.assertSequenceEqual([], act.layers)
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# Adding a slot should be prevented.
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with self.assertRaises(RuntimeError):
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act.slots.new()
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self.assertSequenceEqual([], act.slots)
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class ChannelBagsTest(unittest.TestCase):
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def setUp(self):
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anims = bpy.data.actions
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while anims:
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anims.remove(anims[0])
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self.action = bpy.data.actions.new('TestAction')
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self.slot = self.action.slots.new()
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self.slot.name = 'OBTest'
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self.layer = self.action.layers.new(name="Layer")
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self.strip = self.layer.strips.new(type='KEYFRAME')
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def test_create_remove_channelbag(self):
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channelbag = self.strip.channelbags.new(self.slot)
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self.strip.key_insert(self.slot, "location", 1, 47.0, 327.0)
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self.assertEqual("location", channelbag.fcurves[0].data_path,
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"Keys for the channelbag's slot should go into the channelbag")
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self.strip.channelbags.remove(channelbag)
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self.assertEqual([], list(self.strip.channelbags))
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def test_create_remove_fcurves(self):
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channelbag = self.strip.channelbags.new(self.slot)
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# Creating an F-Curve should work.
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fcurve = channelbag.fcurves.new('location', index=1)
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self.assertIsNotNone(fcurve)
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self.assertEquals(fcurve.data_path, 'location')
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self.assertEquals(fcurve.array_index, 1)
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self.assertEquals([fcurve], channelbag.fcurves[:])
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# Empty data paths should not be accepted.
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with self.assertRaises(RuntimeError):
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channelbag.fcurves.new('', index=1)
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self.assertEquals([fcurve], channelbag.fcurves[:])
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# Creating an F-Curve twice should fail:
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with self.assertRaises(RuntimeError):
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channelbag.fcurves.new('location', index=1)
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self.assertEquals([fcurve], channelbag.fcurves[:])
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# Removing an unrelated F-Curve should fail, even when an F-Curve with
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# the same RNA path and array index exists.
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other_slot = self.action.slots.new()
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other_cbag = self.strip.channelbags.new(other_slot)
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other_fcurve = other_cbag.fcurves.new('location', index=1)
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with self.assertRaises(RuntimeError):
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channelbag.fcurves.remove(other_fcurve)
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self.assertEquals([fcurve], channelbag.fcurves[:])
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# Removing an existing F-Curve should work:
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channelbag.fcurves.remove(fcurve)
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self.assertEquals([], channelbag.fcurves[:])
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def test_fcurves_clear(self):
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channelbag = self.strip.channelbags.new(self.slot)
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for index in range(4):
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channelbag.fcurves.new('rotation_quaternion', index=index)
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self.assertEquals(4, len(channelbag.fcurves))
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channelbag.fcurves.clear()
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self.assertEquals([], channelbag.fcurves[:])
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def test_channel_groups(self):
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channelbag = self.strip.channelbags.new(self.slot)
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# Create some fcurves to play with.
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fcurve0 = channelbag.fcurves.new('location', index=0)
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fcurve1 = channelbag.fcurves.new('location', index=1)
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fcurve2 = channelbag.fcurves.new('location', index=2)
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fcurve3 = channelbag.fcurves.new('scale', index=0)
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fcurve4 = channelbag.fcurves.new('scale', index=1)
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fcurve5 = channelbag.fcurves.new('scale', index=2)
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self.assertEquals([], channelbag.groups[:])
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# Create some channel groups.
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group0 = channelbag.groups.new('group0')
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group1 = channelbag.groups.new('group1')
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self.assertEquals([group0, group1], channelbag.groups[:])
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self.assertEquals([], group0.channels[:])
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self.assertEquals([], group1.channels[:])
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# Assign some fcurves to the channel groups. Intentionally not in order
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# so we can test that the fcurves get moved around properly.
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fcurve5.group = group1
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fcurve3.group = group1
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fcurve2.group = group0
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fcurve4.group = group0
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self.assertEquals([fcurve2, fcurve4], group0.channels[:])
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self.assertEquals([fcurve5, fcurve3], group1.channels[:])
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self.assertEquals([fcurve2, fcurve4, fcurve5, fcurve3, fcurve0, fcurve1], channelbag.fcurves[:])
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# Weird case to be consistent with the legacy API: assigning None to an
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# fcurve's group does *not* unassign it from its group. This is stupid,
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# and we should change it at some point. But it's how the legacy API
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# already works (presumably an oversight), so sticking to that for now.
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fcurve3.group = None
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self.assertEquals(group1, fcurve3.group)
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self.assertEquals([fcurve2, fcurve4], group0.channels[:])
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self.assertEquals([fcurve5, fcurve3], group1.channels[:])
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self.assertEquals([fcurve2, fcurve4, fcurve5, fcurve3, fcurve0, fcurve1], channelbag.fcurves[:])
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# Removing a group.
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channelbag.groups.remove(group0)
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self.assertEquals([group1], channelbag.groups[:])
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self.assertEquals([fcurve5, fcurve3], group1.channels[:])
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self.assertEquals([fcurve5, fcurve3, fcurve2, fcurve4, fcurve0, fcurve1], channelbag.fcurves[:])
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# Attempting to remove a channel group that belongs to a different
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# channel bag should fail.
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other_slot = self.action.slots.new()
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other_cbag = self.strip.channelbags.new(other_slot)
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other_group = other_cbag.groups.new('group1')
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with self.assertRaises(RuntimeError):
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channelbag.groups.remove(other_group)
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# Another weird case that we reproduce from the legacy API: attempting
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# to assign a group to an fcurve that doesn't belong to the same channel
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# bag should silently fail (just does a printf to stdout).
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fcurve0.group = other_group
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self.assertEquals([group1], channelbag.groups[:])
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self.assertEquals([fcurve5, fcurve3], group1.channels[:])
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self.assertEquals([fcurve5, fcurve3, fcurve2, fcurve4, fcurve0, fcurve1], channelbag.fcurves[:])
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class DataPathTest(unittest.TestCase):
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def setUp(self):
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anims = bpy.data.actions
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while anims:
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anims.remove(anims[0])
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def test_repr(self):
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action = bpy.data.actions.new('TestAction')
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slot = action.slots.new()
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slot.name = 'OBTest'
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self.assertEqual("bpy.data.actions['TestAction'].slots[\"OBTest\"]", repr(slot))
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layer = action.layers.new(name="Layer")
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self.assertEqual("bpy.data.actions['TestAction'].layers[\"Layer\"]", repr(layer))
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strip = layer.strips.new(type='KEYFRAME')
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self.assertEqual("bpy.data.actions['TestAction'].layers[\"Layer\"].strips[0]", repr(strip))
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channelbag = strip.channelbags.new(slot)
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self.assertEqual("bpy.data.actions['TestAction'].layers[\"Layer\"].strips[0].channelbags[0]", repr(channelbag))
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class VersioningTest(unittest.TestCase):
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def setUp(self):
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enable_experimental_animation_baklava()
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bpy.ops.wm.open_mainfile(filepath=str(args.testdir / "layered_action_versioning_42.blend"), load_ui=False)
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def tearDown(self) -> None:
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disable_experimental_animation_baklava()
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def test_nla_conversion(self):
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nla_object = bpy.data.objects["nla_object"]
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nla_anim_data = nla_object.animation_data
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self.assertTrue(nla_anim_data.action.is_action_layered)
|
|
self.assertNotEqual(nla_anim_data.action_slot_handle, 0)
|
|
|
|
# The action that is not pushed into an NLA strip.
|
|
active_action = nla_anim_data.action
|
|
strip = active_action.layers[0].strips[0]
|
|
for fcurve_index, fcurve in enumerate(strip.channelbags[0].fcurves):
|
|
self.assertEqual(fcurve.data_path, "rotation_euler")
|
|
self.assertEqual(fcurve.group.name, "Object Transforms")
|
|
self.assertEqual(fcurve.array_index, fcurve_index)
|
|
|
|
self.assertEqual(len(nla_anim_data.nla_tracks), 2)
|
|
self.assertTrue(nla_anim_data.nla_tracks[0].strips[0].action.is_action_layered)
|
|
self.assertNotEqual(nla_anim_data.nla_tracks[0].strips[0].action_slot_handle, 0)
|
|
|
|
self.assertTrue(nla_anim_data.nla_tracks[1].strips[0].action.is_action_layered)
|
|
self.assertNotEqual(nla_anim_data.nla_tracks[1].strips[0].action_slot_handle, 0)
|
|
|
|
def test_multi_use_action(self):
|
|
object_a = bpy.data.objects["multi_user_object_a"]
|
|
object_b = bpy.data.objects["multi_user_object_b"]
|
|
self.assertTrue(object_a.animation_data.action.is_action_layered)
|
|
self.assertNotEqual(object_a.animation_data.action_slot_handle, 0)
|
|
|
|
self.assertTrue(object_b.animation_data.action.is_action_layered)
|
|
self.assertNotEqual(object_b.animation_data.action_slot_handle, 0)
|
|
|
|
self.assertEqual(object_a.animation_data.action, object_b.animation_data.action)
|
|
self.assertEqual(object_a.animation_data.action_slot_handle, object_b.animation_data.action_slot_handle)
|
|
|
|
action = object_a.animation_data.action
|
|
strip = action.layers[0].strips[0]
|
|
self.assertEqual(len(strip.channelbags[0].fcurves), 9)
|
|
self.assertEqual(len(strip.channelbags[0].groups), 1)
|
|
self.assertEqual(len(strip.channelbags[0].groups[0].channels), 9)
|
|
|
|
# Multi user slots do not get named after their users.
|
|
self.assertEqual(action.slots[0].name, "OBSlot")
|
|
|
|
def test_action_constraint(self):
|
|
constrained_object = bpy.data.objects["action_constraint_constrained"]
|
|
action_constraint = constrained_object.constraints[0]
|
|
self.assertTrue(action_constraint.action.is_action_layered)
|
|
self.assertNotEqual(action_constraint.action_slot_handle, 0)
|
|
|
|
action_owner_object = bpy.data.objects["action_constraint_action_owner"]
|
|
action = action_owner_object.animation_data.action
|
|
self.assertTrue(action.is_action_layered)
|
|
self.assertEqual(action, action_constraint.action)
|
|
self.assertEqual(action_owner_object.animation_data.action_slot_handle, action_constraint.action_slot_handle)
|
|
strip = action.layers[0].strips[0]
|
|
self.assertEqual(len(strip.channelbags[0].fcurves), 1)
|
|
fcurve = strip.channelbags[0].fcurves[0]
|
|
self.assertEqual(fcurve.data_path, "location")
|
|
self.assertEqual(fcurve.array_index, 2)
|
|
self.assertEqual(fcurve.group.name, "Object Transforms")
|
|
|
|
def test_armature_action_conversion(self):
|
|
armature_object = bpy.data.objects["armature_object"]
|
|
action = armature_object.animation_data.action
|
|
self.assertTrue(action.is_action_layered)
|
|
strip = action.layers[0].strips[0]
|
|
self.assertEqual(len(strip.channelbags[0].groups), 2)
|
|
self.assertEqual(strip.channelbags[0].groups[0].name, "Bone")
|
|
self.assertEqual(strip.channelbags[0].groups[1].name, "Bone.001")
|
|
self.assertEqual(len(strip.channelbags[0].fcurves), 20)
|
|
self.assertEqual(len(strip.channelbags[0].groups[0].channels), 10)
|
|
self.assertEqual(len(strip.channelbags[0].groups[1].channels), 10)
|
|
|
|
# Slots with a single user are named after their user.
|
|
self.assertEqual(action.slots[0].name, "OBarmature_object")
|
|
|
|
for fcurve in strip.channelbags[0].groups[0].channels:
|
|
self.assertEqual(fcurve.group.name, "Bone")
|
|
|
|
for fcurve in strip.channelbags[0].groups[1].channels:
|
|
self.assertEqual(fcurve.group.name, "Bone.001")
|
|
|
|
|
|
def main():
|
|
global args
|
|
import argparse
|
|
|
|
argv = [sys.argv[0]]
|
|
if '--' in sys.argv:
|
|
argv += sys.argv[sys.argv.index('--') + 1:]
|
|
|
|
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()
|