From f457dc122d1d58f5e0e35db746104b69332597b0 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Sybren=20A=2E=20St=C3=BCvel?= Date: Fri, 14 Feb 2020 15:14:46 +0100 Subject: Cleanup: Alembic, rename unit test This rename is to prepare for a future addition to the unit test file. Currently it's named "import" and I will add an export test as well. The rename is a separate commit to easily see the difference between the rename and the addition of another test. No functional changes. --- tests/python/bl_alembic_io_test.py | 278 +++++++++++++++++++++++++++++++++++++ 1 file changed, 278 insertions(+) create mode 100644 tests/python/bl_alembic_io_test.py (limited to 'tests/python/bl_alembic_io_test.py') diff --git a/tests/python/bl_alembic_io_test.py b/tests/python/bl_alembic_io_test.py new file mode 100644 index 00000000000..41b28cb7c33 --- /dev/null +++ b/tests/python/bl_alembic_io_test.py @@ -0,0 +1,278 @@ +# ##### BEGIN GPL LICENSE BLOCK ##### +# +# This program is free software; you can redistribute it and/or +# modify it under the terms of the GNU General Public License +# as published by the Free Software Foundation; either version 2 +# of the License, or (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software Foundation, +# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. +# +# ##### END GPL LICENSE BLOCK ##### + +# + +""" +./blender.bin --background -noaudio --factory-startup --python tests/python/bl_alembic_io_test.py -- --testdir /path/to/lib/tests/alembic +""" + +import pathlib +import sys +import unittest + +import bpy + +args = None + + +class AbstractAlembicTest(unittest.TestCase): + @classmethod + def setUpClass(cls): + cls.testdir = args.testdir + + def setUp(self): + self.assertTrue(self.testdir.exists(), + 'Test dir %s should exist' % self.testdir) + + # Make sure we always start with a known-empty file. + bpy.ops.wm.open_mainfile(filepath=str(self.testdir / "empty.blend")) + + def assertAlmostEqualFloatArray(self, actual, expect, places=6, delta=None): + """Asserts that the arrays of floats are almost equal.""" + + self.assertEqual(len(actual), len(expect), + 'Actual array has %d items, expected %d' % (len(actual), len(expect))) + + for idx, (act, exp) in enumerate(zip(actual, expect)): + self.assertAlmostEqual(act, exp, places=places, delta=delta, + msg='%f != %f at index %d' % (act, exp, idx)) + + +class SimpleImportTest(AbstractAlembicTest): + def test_import_cube_hierarchy(self): + res = bpy.ops.wm.alembic_import( + filepath=str(self.testdir / "cubes-hierarchy.abc"), + as_background_job=False) + self.assertEqual({'FINISHED'}, res) + + # The objects should be linked to scene.collection in Blender 2.8, + # and to scene in Blender 2.7x. + objects = bpy.context.scene.collection.objects + self.assertEqual(13, len(objects)) + + # Test the hierarchy. + self.assertIsNone(objects['Cube'].parent) + self.assertEqual(objects['Cube'], objects['Cube_001'].parent) + self.assertEqual(objects['Cube'], objects['Cube_002'].parent) + self.assertEqual(objects['Cube'], objects['Cube_003'].parent) + self.assertEqual(objects['Cube_003'], objects['Cube_004'].parent) + self.assertEqual(objects['Cube_003'], objects['Cube_005'].parent) + self.assertEqual(objects['Cube_003'], objects['Cube_006'].parent) + + def test_inherit_or_not(self): + res = bpy.ops.wm.alembic_import( + filepath=str(self.testdir / "T52022-inheritance.abc"), + as_background_job=False) + self.assertEqual({'FINISHED'}, res) + + # The objects should be linked to scene.collection in Blender 2.8, + # and to scene in Blender 2.7x. + objects = bpy.context.scene.collection.objects + + # ABC parent is top-level object, which translates to nothing in Blender + self.assertIsNone(objects['locator1'].parent) + + # ABC parent is locator1, but locator2 has "inherits Xforms" = false, which + # translates to "no parent" in Blender. + self.assertIsNone(objects['locator2'].parent) + + depsgraph = bpy.context.evaluated_depsgraph_get() + + # Shouldn't have inherited the ABC parent's transform. + loc2 = depsgraph.id_eval_get(objects['locator2']) + x, y, z = objects['locator2'].matrix_world.to_translation() + self.assertAlmostEqual(0, x) + self.assertAlmostEqual(0, y) + self.assertAlmostEqual(2, z) + + # ABC parent is inherited and translates to normal parent in Blender. + self.assertEqual(objects['locator2'], objects['locatorShape2'].parent) + + # Should have inherited its ABC parent's transform. + locshp2 = depsgraph.id_eval_get(objects['locatorShape2']) + x, y, z = locshp2.matrix_world.to_translation() + self.assertAlmostEqual(0, x) + self.assertAlmostEqual(0, y) + self.assertAlmostEqual(2, z) + + def test_select_after_import(self): + # Add a sphere, so that there is something in the scene, selected, and active, + # before we do the Alembic import. + bpy.ops.mesh.primitive_uv_sphere_add() + sphere = bpy.context.active_object + self.assertEqual('Sphere', sphere.name) + self.assertEqual([sphere], bpy.context.selected_objects) + + bpy.ops.wm.alembic_import( + filepath=str(self.testdir / "cubes-hierarchy.abc"), + as_background_job=False) + + # The active object is probably the first one that was imported, but this + # behaviour is not defined. At least it should be one of the cubes, and + # not the sphere. + self.assertNotEqual(sphere, bpy.context.active_object) + self.assertTrue('Cube' in bpy.context.active_object.name) + + # All cubes should be selected, but the sphere shouldn't be. + for ob in bpy.data.objects: + self.assertEqual('Cube' in ob.name, ob.select_get()) + + def test_change_path_constraint(self): + import math + + fname = 'cube-rotating1.abc' + abc = self.testdir / fname + relpath = bpy.path.relpath(str(abc)) + + res = bpy.ops.wm.alembic_import(filepath=str(abc), as_background_job=False) + self.assertEqual({'FINISHED'}, res) + cube = bpy.context.active_object + + depsgraph = bpy.context.evaluated_depsgraph_get() + + # Check that the file loaded ok. + bpy.context.scene.frame_set(10) + cube = depsgraph.id_eval_get(cube) + x, y, z = cube.matrix_world.to_euler('XYZ') + self.assertAlmostEqual(x, 0) + self.assertAlmostEqual(y, 0) + self.assertAlmostEqual(z, math.pi / 2, places=5) + + # Change path from absolute to relative. This should not break the animation. + bpy.context.scene.frame_set(1) + bpy.data.cache_files[fname].filepath = relpath + bpy.context.scene.frame_set(10) + + cube = depsgraph.id_eval_get(cube) + x, y, z = cube.matrix_world.to_euler('XYZ') + self.assertAlmostEqual(x, 0) + self.assertAlmostEqual(y, 0) + self.assertAlmostEqual(z, math.pi / 2, places=5) + + # Replace the Alembic file; this should apply new animation. + bpy.data.cache_files[fname].filepath = relpath.replace('1.abc', '2.abc') + depsgraph.update() + + cube = depsgraph.id_eval_get(cube) + x, y, z = cube.matrix_world.to_euler('XYZ') + self.assertAlmostEqual(x, math.pi / 2, places=5) + self.assertAlmostEqual(y, 0) + self.assertAlmostEqual(z, 0) + + def test_change_path_modifier(self): + fname = 'animated-mesh.abc' + abc = self.testdir / fname + relpath = bpy.path.relpath(str(abc)) + + res = bpy.ops.wm.alembic_import(filepath=str(abc), as_background_job=False) + self.assertEqual({'FINISHED'}, res) + plane = bpy.context.active_object + + depsgraph = bpy.context.evaluated_depsgraph_get() + + # Check that the file loaded ok. + bpy.context.scene.frame_set(6) + scene = bpy.context.scene + plane_eval = plane.evaluated_get(depsgraph) + mesh = plane_eval.to_mesh() + self.assertAlmostEqual(-1, mesh.vertices[0].co.x) + self.assertAlmostEqual(-1, mesh.vertices[0].co.y) + self.assertAlmostEqual(0.5905638933181763, mesh.vertices[0].co.z) + plane_eval.to_mesh_clear() + + # Change path from absolute to relative. This should not break the animation. + scene.frame_set(1) + bpy.data.cache_files[fname].filepath = relpath + scene.frame_set(6) + + plane_eval = plane.evaluated_get(depsgraph) + mesh = plane_eval.to_mesh() + self.assertAlmostEqual(1, mesh.vertices[3].co.x) + self.assertAlmostEqual(1, mesh.vertices[3].co.y) + self.assertAlmostEqual(0.5905638933181763, mesh.vertices[3].co.z) + plane_eval.to_mesh_clear() + + def test_import_long_names(self): + # This file contains very long names. The longest name is 4047 chars. + bpy.ops.wm.alembic_import( + filepath=str(self.testdir / "long-names.abc"), + as_background_job=False) + + self.assertIn('Cube', bpy.data.objects) + self.assertEqual('CubeShape', bpy.data.objects['Cube'].data.name) + + +class VertexColourImportTest(AbstractAlembicTest): + def test_import_from_houdini(self): + # Houdini saved "face-varying", and as RGB. + res = bpy.ops.wm.alembic_import( + filepath=str(self.testdir / "vertex-colours-houdini.abc"), + as_background_job=False) + self.assertEqual({'FINISHED'}, res) + + ob = bpy.context.active_object + layer = ob.data.vertex_colors['Cf'] # MeshLoopColorLayer + + # Test some known-good values. + self.assertAlmostEqualFloatArray(layer.data[0].color, (0, 0, 0, 1.0)) + self.assertAlmostEqualFloatArray(layer.data[98].color, (0.9019607, 0.4745098, 0.2666666, 1.0)) + self.assertAlmostEqualFloatArray(layer.data[99].color, (0.8941176, 0.4705882, 0.2627451, 1.0)) + + def test_import_from_blender(self): + # Blender saved per-vertex, and as RGBA. + res = bpy.ops.wm.alembic_import( + filepath=str(self.testdir / "vertex-colours-blender.abc"), + as_background_job=False) + self.assertEqual({'FINISHED'}, res) + + ob = bpy.context.active_object + layer = ob.data.vertex_colors['Cf'] # MeshLoopColorLayer + + # Test some known-good values. + self.assertAlmostEqualFloatArray(layer.data[0].color, (1.0, 0.0156862, 0.3607843, 1.0)) + self.assertAlmostEqualFloatArray(layer.data[98].color, (0.0941176, 0.1215686, 0.9137254, 1.0)) + self.assertAlmostEqualFloatArray(layer.data[99].color, (0.1294117, 0.3529411, 0.7529411, 1.0)) + + +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__": + import traceback + # So a python error exits Blender itself too + try: + main() + except SystemExit: + raise + except: + traceback.print_exc() + sys.exit(1) -- cgit v1.2.3