2cdbe7b5f3
Color primvars/attributes were historically treated as a special case for both import and export. This was mostly done to align with how painting and viewport display works in Blender. Export would generally ignore color attributes except when they were found on a Mesh's Point or FaceCorner domains. And import went out of its way to map incoming color primvars to the FaceCorner domain in more situations than necessary. To facilitate better roundtripping in Blender<=>USD workflows, and to reduce code duplication, this PR teaches the common attribute utilities how to handle color types. The color attributes will now work on all relevant Mesh and Curve domains. There were tests in place for this already but they were set to verify the inverse state, i.e. the technically broken state, until this could be fixed. There remains one special case: "displayColor" primvars and attributes. The "displayColor" is a special primvar in USD and is the de-facto way to set a simple viewport color in that ecosystem. It must also be a color3f type. In order to not regress import, if a "displayColor" primvar is found on the Face domain we will map it to FaceCorner instead so it can be displayed in the viewport; which has been the case for the past several releases. We can drop this special-case if/when Blender can display Face colors through the Viewport Shading "Attribute" color type. Additionally, Blender will export this, and only this, color attribute as a color3f. Note: As was the case prior to this PR, the following 2 discrepancies still prevent "perfect" round-trips: - USD does not have an equivalent to Blender's byte colors; they are treated as float during IO - Blender does not have an equivalent to USD's color3 types; they are treated as color4 during IO Pull Request: https://projects.blender.org/blender/blender/pulls/127784
1234 lines
62 KiB
Python
1234 lines
62 KiB
Python
# SPDX-FileCopyrightText: 2021-2023 Blender Authors
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#
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# SPDX-License-Identifier: GPL-2.0-or-later
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import math
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import pathlib
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import sys
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import tempfile
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import unittest
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from pxr import Gf, Sdf, Usd, UsdGeom, UsdShade
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import bpy
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args = None
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class AbstractUSDTest(unittest.TestCase):
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@classmethod
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def setUpClass(cls):
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cls.testdir = args.testdir
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cls._tempdir = tempfile.TemporaryDirectory()
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cls.tempdir = pathlib.Path(cls._tempdir.name)
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def setUp(self):
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self.assertTrue(self.testdir.exists(),
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'Test dir {0} should exist'.format(self.testdir))
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# Make sure we always start with a known-empty file.
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bpy.ops.wm.open_mainfile(filepath=str(self.testdir / "empty.blend"))
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def tearDown(self):
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self._tempdir.cleanup()
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class USDImportTest(AbstractUSDTest):
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def test_import_operator(self):
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"""Test running the import operator on valid and invalid files."""
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infile = str(self.testdir / "usd_mesh_polygon_types.usda")
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res = bpy.ops.wm.usd_import(filepath=infile)
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self.assertEqual({'FINISHED'}, res, f"Unable to import USD file {infile}")
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infile = str(self.testdir / "this_file_doesn't_exist.usda")
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# RPT_ERROR Reports from operators generate `RuntimeError` python exceptions.
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try:
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res = bpy.ops.wm.usd_import(filepath=infile)
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self.assertEqual({'CANCELLED'}, res, "Was somehow able to import a non-existent USD file!")
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except RuntimeError as e:
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self.assertTrue(e.args[0].startswith("Error: USD Import: unable to open stage to read"))
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def test_import_prim_hierarchy(self):
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"""Test importing a simple object hierarchy from a USDA file."""
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infile = str(self.testdir / "prim-hierarchy.usda")
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res = bpy.ops.wm.usd_import(filepath=infile)
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self.assertEqual({'FINISHED'}, res, f"Unable to import USD file {infile}")
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objects = bpy.context.scene.collection.objects
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self.assertEqual(5, len(objects), f"Test scene {infile} should have five objects; found {len(objects)}")
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# Test the hierarchy.
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self.assertIsNone(objects['World'].parent, "/World should not be parented.")
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self.assertEqual(objects['World'], objects['Plane'].parent, "Plane should be child of /World")
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self.assertEqual(objects['World'], objects['Plane_001'].parent, "Plane_001 should be a child of /World")
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self.assertEqual(objects['World'], objects['Empty'].parent, "Empty should be a child of /World")
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self.assertEqual(objects['Empty'], objects['Plane_002'].parent, "Plane_002 should be a child of /World")
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def test_import_mesh_topology(self):
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"""Test importing meshes with different polygon types."""
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infile = str(self.testdir / "usd_mesh_polygon_types.usda")
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res = bpy.ops.wm.usd_import(filepath=infile)
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self.assertEqual({'FINISHED'}, res, f"Unable to import USD file {infile}")
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objects = bpy.context.scene.collection.objects
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self.assertEqual(5, len(objects), f"Test scene {infile} should have five objects; found {len(objects)}")
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# Test topology counts.
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self.assertIn("m_degenerate", objects, "Scene does not contain object m_degenerate")
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mesh = objects["m_degenerate"].data
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self.assertEqual(len(mesh.polygons), 2)
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self.assertEqual(len(mesh.edges), 7)
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self.assertEqual(len(mesh.vertices), 6)
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self.assertIn("m_triangles", objects, "Scene does not contain object m_triangles")
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mesh = objects["m_triangles"].data
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self.assertEqual(len(mesh.polygons), 2)
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self.assertEqual(len(mesh.edges), 5)
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self.assertEqual(len(mesh.vertices), 4)
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self.assertEqual(len(mesh.polygons[0].vertices), 3)
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self.assertIn("m_quad", objects, "Scene does not contain object m_quad")
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mesh = objects["m_quad"].data
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self.assertEqual(len(mesh.polygons), 1)
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self.assertEqual(len(mesh.edges), 4)
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self.assertEqual(len(mesh.vertices), 4)
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self.assertEqual(len(mesh.polygons[0].vertices), 4)
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self.assertIn("m_ngon_concave", objects, "Scene does not contain object m_ngon_concave")
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mesh = objects["m_ngon_concave"].data
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self.assertEqual(len(mesh.polygons), 1)
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self.assertEqual(len(mesh.edges), 5)
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self.assertEqual(len(mesh.vertices), 5)
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self.assertEqual(len(mesh.polygons[0].vertices), 5)
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self.assertIn("m_ngon_convex", objects, "Scene does not contain object m_ngon_convex")
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mesh = objects["m_ngon_convex"].data
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self.assertEqual(len(mesh.polygons), 1)
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self.assertEqual(len(mesh.edges), 5)
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self.assertEqual(len(mesh.vertices), 5)
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self.assertEqual(len(mesh.polygons[0].vertices), 5)
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def test_import_mesh_uv_maps(self):
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"""Test importing meshes with udim UVs and multiple UV sets."""
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infile = str(self.testdir / "usd_mesh_udim.usda")
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res = bpy.ops.wm.usd_import(filepath=infile)
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self.assertEqual({'FINISHED'}, res, f"Unable to import USD file {infile}")
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objects = bpy.context.scene.collection.objects
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if "preview" in bpy.data.objects:
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bpy.data.objects.remove(bpy.data.objects["preview"])
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self.assertEqual(1, len(objects), f"File {infile} should contain one object, found {len(objects)}")
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mesh = bpy.data.objects["uvmap_plane"].data
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self.assertEqual(len(mesh.uv_layers), 2,
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f"Object uvmap_plane should have two uv layers, found {len(mesh.uv_layers)}")
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expected_layer_names = {"udim_map", "uvmap"}
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imported_layer_names = set(mesh.uv_layers.keys())
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self.assertEqual(
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expected_layer_names,
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imported_layer_names,
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f"Expected layer names ({expected_layer_names}) not found on uvmap_plane.")
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def get_coords(data):
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coords = [x.uv for x in uvmap]
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return coords
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def uv_min_max(data):
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coords = get_coords(data)
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uv_min_x = min([uv[0] for uv in coords])
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uv_max_x = max([uv[0] for uv in coords])
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uv_min_y = min([uv[1] for uv in coords])
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uv_max_y = max([uv[1] for uv in coords])
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return uv_min_x, uv_max_x, uv_min_y, uv_max_y
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# Quick tests for point range.
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uvmap = mesh.uv_layers["uvmap"].data
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self.assertEqual(len(uvmap), 128)
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min_x, max_x, min_y, max_y = uv_min_max(uvmap)
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self.assertGreaterEqual(min_x, 0.0)
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self.assertGreaterEqual(min_y, 0.0)
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self.assertLessEqual(max_x, 1.0)
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self.assertLessEqual(max_y, 1.0)
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uvmap = mesh.uv_layers["udim_map"].data
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self.assertEqual(len(uvmap), 128)
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min_x, max_x, min_y, max_y = uv_min_max(uvmap)
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self.assertGreaterEqual(min_x, 0.0)
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self.assertGreaterEqual(min_y, 0.0)
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self.assertLessEqual(max_x, 2.0)
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self.assertLessEqual(max_y, 1.0)
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# Make sure at least some points are in a udim tile.
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coords = get_coords(uvmap)
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coords = list(filter(lambda x: x[0] > 1.0, coords))
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self.assertGreater(len(coords), 16)
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def test_import_camera_properties(self):
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"""Test importing camera to ensure properties set correctly."""
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# This file has metersPerUnit = 1
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infile = str(self.testdir / "usd_camera_test_1.usda")
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res = bpy.ops.wm.usd_import(filepath=infile)
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self.assertEqual({'FINISHED'}, res)
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camera_object = bpy.data.objects["Test_Camera"]
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test_cam = camera_object.data
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self.assertAlmostEqual(43.12, test_cam.lens, 2)
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self.assertAlmostEqual(24.89, test_cam.sensor_width, 2)
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self.assertAlmostEqual(14.00, test_cam.sensor_height, 2)
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self.assertAlmostEqual(2.281, test_cam.shift_x, 2)
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self.assertAlmostEqual(0.496, test_cam.shift_y, 2)
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bpy.ops.object.select_all(action='SELECT')
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bpy.ops.object.delete()
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# This file has metersPerUnit = 0.1
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infile = str(self.testdir / "usd_camera_test_2.usda")
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res = bpy.ops.wm.usd_import(filepath=infile)
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self.assertEqual({'FINISHED'}, res)
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camera_object = bpy.data.objects["Test_Camera"]
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test_cam = camera_object.data
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self.assertAlmostEqual(4.312, test_cam.lens, 3)
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self.assertAlmostEqual(2.489, test_cam.sensor_width, 3)
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self.assertAlmostEqual(1.400, test_cam.sensor_height, 3)
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self.assertAlmostEqual(2.281, test_cam.shift_x, 3)
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self.assertAlmostEqual(0.496, test_cam.shift_y, 3)
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def test_import_materials(self):
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"""Validate UsdPreviewSurface shader graphs."""
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# Use the existing materials test file to create the USD file
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# for import. It is validated as part of the bl_usd_export test.
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bpy.ops.wm.open_mainfile(filepath=str(self.testdir / "usd_materials_export.blend"))
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testfile = str(self.tempdir / "temp_materials.usda")
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res = bpy.ops.wm.usd_export(filepath=str(testfile), export_materials=True)
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self.assertEqual({'FINISHED'}, res, f"Unable to export to {testfile}")
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# Reload the empty file and import back in
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bpy.ops.wm.open_mainfile(filepath=str(self.testdir / "empty.blend"))
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res = bpy.ops.wm.usd_import(filepath=testfile)
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self.assertEqual({'FINISHED'}, res, f"Unable to import USD file {testfile}")
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# Most shader graph validation should occur through the Hydra render test suite. Here we
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# will only check some high-level criteria for each expected node graph.
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def assert_all_nodes_present(mat, node_list):
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nodes = mat.node_tree.nodes
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self.assertEqual(len(nodes), len(node_list))
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for node in node_list:
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self.assertTrue(nodes.find(node) >= 0, f"Could not find node '{node}' in material '{mat.name}'")
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def round_vector(vector):
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return [round(c, 5) + 0 for c in vector]
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mat = bpy.data.materials["Material"]
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assert_all_nodes_present(mat, ["Principled BSDF", "Image Texture", "UV Map", "Material Output"])
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mat = bpy.data.materials["Clip_With_LessThanInvert"]
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assert_all_nodes_present(
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mat, ["Principled BSDF", "Image Texture", "UV Map", "Math", "Math.001", "Material Output"])
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node = [n for n in mat.node_tree.nodes if n.type == 'MATH' and n.operation == "LESS_THAN"][0]
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self.assertAlmostEqual(node.inputs[1].default_value, 0.2, 3)
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mat = bpy.data.materials["Clip_With_Round"]
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assert_all_nodes_present(
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mat, ["Principled BSDF", "Image Texture", "UV Map", "Math", "Math.001", "Material Output"])
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node = [n for n in mat.node_tree.nodes if n.type == 'MATH' and n.operation == "LESS_THAN"][0]
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self.assertAlmostEqual(node.inputs[1].default_value, 0.5, 3)
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mat = bpy.data.materials["Transforms"]
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assert_all_nodes_present(mat, ["Principled BSDF", "Image Texture", "UV Map", "Mapping", "Material Output"])
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node = mat.node_tree.nodes["Mapping"]
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self.assertEqual(round_vector(node.inputs[1].default_value), [0.75, 0.75, 0])
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self.assertEqual(round_vector(node.inputs[2].default_value), [0, 0, 3.14159])
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self.assertEqual(round_vector(node.inputs[3].default_value), [0.5, 0.5, 1])
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mat = bpy.data.materials["NormalMap"]
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assert_all_nodes_present(mat, ["Principled BSDF", "Image Texture", "UV Map", "Normal Map", "Material Output"])
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mat = bpy.data.materials["NormalMap_Scale_Bias"]
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assert_all_nodes_present(mat, ["Principled BSDF", "Image Texture", "UV Map",
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"Normal Map", "Vector Math", "Vector Math.001", "Material Output"])
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node = mat.node_tree.nodes["Vector Math"]
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self.assertEqual(round_vector(node.inputs[1].default_value), [2, -2, 2])
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self.assertEqual(round_vector(node.inputs[2].default_value), [-1, 1, -1])
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def test_import_shader_varname_with_connection(self):
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"""Test importing USD shader where uv primvar is a connection"""
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varname = "testmap"
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texfile = str(self.testdir / "textures/test_grid_1001.png")
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# Create the test USD file.
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temp_usd_file = str(self.tempdir / "usd_varname_test.usda")
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stage = Usd.Stage.CreateNew(temp_usd_file)
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mesh1 = stage.DefinePrim("/mesh1", "Mesh")
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mesh2 = stage.DefinePrim("/mesh2", "Mesh")
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# Create two USD preview surface shaders in two materials.
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m1 = UsdShade.Material.Define(stage, "/mat1")
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s1 = UsdShade.Shader.Define(stage, "/mat1/previewshader")
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s1.CreateIdAttr("UsdPreviewSurface")
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m1.CreateSurfaceOutput().ConnectToSource(s1.ConnectableAPI(), "surface")
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t1 = UsdShade.Shader.Define(stage, "/mat1/diffuseTexture")
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t1.CreateIdAttr("UsdUVTexture")
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t1.CreateInput('file', Sdf.ValueTypeNames.Asset).Set(texfile)
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t1.CreateOutput("rgb", Sdf.ValueTypeNames.Float3)
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s1.CreateInput("diffuseColor", Sdf.ValueTypeNames.Color3f).ConnectToSource(t1.ConnectableAPI(), "rgb")
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t2 = UsdShade.Shader.Define(stage, "/mat1/roughnessTexture")
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t2.CreateIdAttr("UsdUVTexture")
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t2.CreateInput('file', Sdf.ValueTypeNames.Asset).Set(texfile)
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t2.CreateOutput("rgb", Sdf.ValueTypeNames.Float3)
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s1.CreateInput("roughness", Sdf.ValueTypeNames.Color3f).ConnectToSource(t2.ConnectableAPI(), "rgb")
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m2 = UsdShade.Material.Define(stage, "/mat2")
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s2 = UsdShade.Shader.Define(stage, "/mat2/previewshader")
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s2.CreateIdAttr("UsdPreviewSurface")
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m2.CreateSurfaceOutput().ConnectToSource(s2.ConnectableAPI(), "surface")
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t3 = UsdShade.Shader.Define(stage, "/mat2/diffuseTexture")
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t3.CreateIdAttr("UsdUVTexture")
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t3.CreateInput('file', Sdf.ValueTypeNames.Asset).Set(texfile)
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t3.CreateOutput("rgb", Sdf.ValueTypeNames.Float3)
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s2.CreateInput("diffuseColor", Sdf.ValueTypeNames.Color3f).ConnectToSource(t3.ConnectableAPI(), "rgb")
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t4 = UsdShade.Shader.Define(stage, "/mat2/roughnessTexture")
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t4.CreateIdAttr("UsdUVTexture")
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t4.CreateInput('file', Sdf.ValueTypeNames.Asset).Set(texfile)
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t4.CreateOutput("rgb", Sdf.ValueTypeNames.Float3)
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s2.CreateInput("roughness", Sdf.ValueTypeNames.Color3f).ConnectToSource(t4.ConnectableAPI(), "rgb")
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# Bind mat1 to mesh1, mat2 to mesh2.
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bindingAPI = UsdShade.MaterialBindingAPI.Apply(mesh1)
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bindingAPI.Bind(m1)
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bindingAPI = UsdShade.MaterialBindingAPI.Apply(mesh2)
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bindingAPI.Bind(m2)
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# Create varname defined as a token.
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s3 = UsdShade.Shader.Define(stage, "/mat1/primvar_reader1")
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s3.CreateIdAttr('UsdPrimvarReader_float2')
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s3input = s3.CreateInput("varname", Sdf.ValueTypeNames.Token)
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s3input.Set(varname)
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t1.CreateInput("st", Sdf.ValueTypeNames.TexCoord2f).ConnectToSource(s3.ConnectableAPI(), "result")
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# Create varname defined as a connection to a token.
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varname1 = m1.CreateInput("varname", Sdf.ValueTypeNames.Token)
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varname1.Set(varname)
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s4 = UsdShade.Shader.Define(stage, "/mat1/primvar_reader2")
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s4.CreateIdAttr('UsdPrimvarReader_float2')
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s4input = s4.CreateInput("varname", Sdf.ValueTypeNames.Token)
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UsdShade.ConnectableAPI.ConnectToSource(s4input, varname1)
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t2.CreateInput("st", Sdf.ValueTypeNames.TexCoord2f).ConnectToSource(s4.ConnectableAPI(), "result")
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# Create varname defined as a string.
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s5 = UsdShade.Shader.Define(stage, "/mat2/primvar_reader1")
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s5.CreateIdAttr('UsdPrimvarReader_float2')
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s5input = s5.CreateInput("varname", Sdf.ValueTypeNames.String)
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s5input.Set(varname)
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t3.CreateInput("st", Sdf.ValueTypeNames.TexCoord2f).ConnectToSource(s5.ConnectableAPI(), "result")
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# Create varname defined as a connection to a string.
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varname2 = m2.CreateInput("varname", Sdf.ValueTypeNames.String)
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varname2.Set(varname)
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s6 = UsdShade.Shader.Define(stage, "/mat2/primvar_reader2")
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s6.CreateIdAttr('UsdPrimvarReader_float2')
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s6input = s6.CreateInput("varname", Sdf.ValueTypeNames.String)
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UsdShade.ConnectableAPI.ConnectToSource(s6input, varname2)
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t4.CreateInput("st", Sdf.ValueTypeNames.TexCoord2f).ConnectToSource(s6.ConnectableAPI(), "result")
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stage.Save()
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# Now import the USD file.
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res = bpy.ops.wm.usd_import(filepath=temp_usd_file, import_all_materials=True)
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self.assertEqual({'FINISHED'}, res)
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# Ensure that we find the correct varname for all four primvar readers.
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num_uvmaps_found = 0
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mats_to_test = []
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mats_to_test.append(bpy.data.materials["mat1"])
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mats_to_test.append(bpy.data.materials["mat2"])
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for mat in mats_to_test:
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self.assertIsNotNone(mat.node_tree, "Material node tree is empty")
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for node in mat.node_tree.nodes:
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if node.type == "UVMAP":
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self.assertEqual(varname, node.uv_map, "Unexpected value for varname")
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num_uvmaps_found += 1
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self.assertEqual(4, num_uvmaps_found, "One or more test materials failed to import")
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def test_import_usd_blend_shapes(self):
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"""Test importing USD blend shapes with animated weights."""
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infile = str(self.testdir / "usd_blend_shape_test.usda")
|
|
res = bpy.ops.wm.usd_import(filepath=infile)
|
|
self.assertEqual({'FINISHED'}, res)
|
|
|
|
obj = bpy.data.objects["Plane"]
|
|
|
|
obj.active_shape_key_index = 1
|
|
|
|
key = obj.active_shape_key
|
|
self.assertEqual(key.name, "Key_1", "Unexpected shape key name")
|
|
|
|
# Verify the number of shape key points.
|
|
self.assertEqual(len(key.data), 4, "Unexpected number of shape key point")
|
|
|
|
# Verify shape key point coordinates
|
|
|
|
# Reference point values.
|
|
refs = ((-2.51, -1.92, 0.20), (0.86, -1.46, -0.1),
|
|
(-1.33, 1.29, .84), (1.32, 2.20, -0.42))
|
|
|
|
for i in range(4):
|
|
co = key.data[i].co
|
|
ref = refs[i]
|
|
# Compare coordinates.
|
|
for j in range(3):
|
|
self.assertAlmostEqual(co[j], ref[j], 2)
|
|
|
|
# Verify the shape key values.
|
|
bpy.context.scene.frame_set(1)
|
|
self.assertAlmostEqual(key.value, .002, 1)
|
|
bpy.context.scene.frame_set(30)
|
|
self.assertAlmostEqual(key.value, .900, 3)
|
|
bpy.context.scene.frame_set(60)
|
|
self.assertAlmostEqual(key.value, .100, 3)
|
|
|
|
def test_import_usd_skel_joints(self):
|
|
"""Test importing USD animated skeleton joints."""
|
|
|
|
infile = str(self.testdir / "arm.usda")
|
|
res = bpy.ops.wm.usd_import(filepath=infile)
|
|
self.assertEqual({'FINISHED'}, res)
|
|
|
|
# Verify armature was imported.
|
|
arm_obj = bpy.data.objects["Skel"]
|
|
self.assertEqual(arm_obj.type, "ARMATURE", "'Skel' object is not an armature")
|
|
|
|
arm = arm_obj.data
|
|
bones = arm.bones
|
|
|
|
# Verify bone parenting.
|
|
self.assertIsNone(bones['Shoulder'].parent, "Shoulder bone should not be parented")
|
|
self.assertEqual(bones['Shoulder'], bones['Elbow'].parent, "Elbow bone should be child of Shoulder bone")
|
|
self.assertEqual(bones['Elbow'], bones['Hand'].parent, "Hand bone should be child of Elbow bone")
|
|
|
|
# Verify armature modifier was created on the mesh.
|
|
mesh_obj = bpy.data.objects['Arm']
|
|
# Get all the armature modifiers on the mesh.
|
|
arm_mods = [m for m in mesh_obj.modifiers if m.type == "ARMATURE"]
|
|
self.assertEqual(len(arm_mods), 1, "Didn't get expected armatrue modifier")
|
|
self.assertEqual(arm_mods[0].object, arm_obj, "Armature modifier does not reference the imported armature")
|
|
|
|
# Verify expected deform groups.
|
|
# There are 4 points in each group.
|
|
for i in range(4):
|
|
self.assertAlmostEqual(mesh_obj.vertex_groups['Hand'].weight(
|
|
i), 1.0, 2, "Unexpected weight for Hand deform vert")
|
|
self.assertAlmostEqual(mesh_obj.vertex_groups['Shoulder'].weight(
|
|
4 + i), 1.0, 2, "Unexpected weight for Shoulder deform vert")
|
|
self.assertAlmostEqual(mesh_obj.vertex_groups['Elbow'].weight(
|
|
8 + i), 1.0, 2, "Unexpected weight for Elbow deform vert")
|
|
|
|
action = bpy.data.actions['SkelAction']
|
|
|
|
# Verify the Elbow joint rotation animation.
|
|
curve_path = 'pose.bones["Elbow"].rotation_quaternion'
|
|
|
|
# Quat W
|
|
f = action.fcurves.find(curve_path, index=0)
|
|
self.assertIsNotNone(f, "Couldn't find Elbow rotation quaternion W curve")
|
|
self.assertAlmostEqual(f.evaluate(0), 1.0, 2, "Unexpected value for rotation quaternion W curve at frame 0")
|
|
self.assertAlmostEqual(f.evaluate(10), 0.707, 2, "Unexpected value for rotation quaternion W curve at frame 10")
|
|
|
|
# Quat X
|
|
f = action.fcurves.find(curve_path, index=1)
|
|
self.assertIsNotNone(f, "Couldn't find Elbow rotation quaternion X curve")
|
|
self.assertAlmostEqual(f.evaluate(0), 0.0, 2, "Unexpected value for rotation quaternion X curve at frame 0")
|
|
self.assertAlmostEqual(f.evaluate(10), 0.707, 2, "Unexpected value for rotation quaternion X curve at frame 10")
|
|
|
|
# Quat Y
|
|
f = action.fcurves.find(curve_path, index=2)
|
|
self.assertIsNotNone(f, "Couldn't find Elbow rotation quaternion Y curve")
|
|
self.assertAlmostEqual(f.evaluate(0), 0.0, 2, "Unexpected value for rotation quaternion Y curve at frame 0")
|
|
self.assertAlmostEqual(f.evaluate(10), 0.0, 2, "Unexpected value for rotation quaternion Y curve at frame 10")
|
|
|
|
# Quat Z
|
|
f = action.fcurves.find(curve_path, index=3)
|
|
self.assertIsNotNone(f, "Couldn't find Elbow rotation quaternion Z curve")
|
|
self.assertAlmostEqual(f.evaluate(0), 0.0, 2, "Unexpected value for rotation quaternion Z curve at frame 0")
|
|
self.assertAlmostEqual(f.evaluate(10), 0.0, 2, "Unexpected value for rotation quaternion Z curve at frame 10")
|
|
|
|
def check_curve(self, blender_curve, usd_curve):
|
|
curve_type_map = {"linear": 1, "cubic": 2}
|
|
cyclic_map = {"nonperiodic": False, "periodic": True}
|
|
|
|
# Check correct spline count.
|
|
blender_spline_count = len(blender_curve.attributes["curve_type"].data)
|
|
usd_spline_count = len(usd_curve.GetCurveVertexCountsAttr().Get())
|
|
self.assertEqual(blender_spline_count, usd_spline_count)
|
|
|
|
# Check correct type of curve. All splines should have the same type and periodicity.
|
|
usd_curve_type = usd_curve.GetTypeAttr().Get()
|
|
usd_cyclic = usd_curve.GetWrapAttr().Get()
|
|
expected_curve_type = curve_type_map[usd_curve_type]
|
|
expected_cyclic = cyclic_map[usd_cyclic]
|
|
|
|
for i in range(0, blender_spline_count):
|
|
blender_curve_type = blender_curve.attributes["curve_type"].data[i].value
|
|
blender_cyclic = False
|
|
if "cyclic" in blender_curve.attributes:
|
|
blender_cyclic = blender_curve.attributes["cyclic"].data[i].value
|
|
|
|
self.assertEqual(blender_curve_type, expected_curve_type)
|
|
self.assertEqual(blender_cyclic, expected_cyclic)
|
|
|
|
# Check position data.
|
|
usd_positions = usd_curve.GetPointsAttr().Get()
|
|
blender_positions = blender_curve.attributes["position"].data
|
|
|
|
point_count = 0
|
|
if usd_curve_type == "linear":
|
|
point_count = len(usd_positions)
|
|
self.assertEqual(len(blender_positions), point_count)
|
|
elif usd_curve_type == "cubic":
|
|
control_point_count = 0
|
|
usd_vert_counts = usd_curve.GetCurveVertexCountsAttr().Get()
|
|
for i in range(0, usd_spline_count):
|
|
if usd_cyclic == "nonperiodic":
|
|
control_point_count += (int(usd_vert_counts[i] / 3) + 1)
|
|
else:
|
|
control_point_count += (int(usd_vert_counts[i] / 3))
|
|
|
|
point_count = control_point_count
|
|
self.assertEqual(len(blender_positions), point_count)
|
|
|
|
# Check radius data.
|
|
usd_width_interpolation = usd_curve.GetWidthsInterpolation()
|
|
usd_radius = [w / 2 for w in usd_curve.GetWidthsAttr().Get()]
|
|
blender_radius = [r.value for r in blender_curve.attributes["radius"].data]
|
|
if usd_curve_type == "linear":
|
|
if usd_width_interpolation == "constant":
|
|
usd_radius = usd_radius * point_count
|
|
|
|
for i in range(0, len(blender_radius)):
|
|
self.assertAlmostEqual(blender_radius[i], usd_radius[i], 2)
|
|
|
|
elif usd_curve_type == "cubic":
|
|
if usd_width_interpolation == "constant":
|
|
usd_radius = usd_radius * point_count
|
|
|
|
for i in range(0, len(blender_radius)):
|
|
self.assertAlmostEqual(blender_radius[i], usd_radius[i], 2)
|
|
elif usd_width_interpolation == "varying":
|
|
# Do a quick min/max sanity check instead of reimplementing width interpolation
|
|
usd_min = min(usd_radius)
|
|
usd_max = max(usd_radius)
|
|
blender_min = min(blender_radius)
|
|
blender_max = max(blender_radius)
|
|
|
|
self.assertAlmostEqual(blender_min, usd_min, 2)
|
|
self.assertAlmostEqual(blender_max, usd_max, 2)
|
|
elif usd_width_interpolation == "vertex":
|
|
# Do a quick check to ensure radius has been set at all
|
|
self.assertEqual(True, all([r > 0 and r < 1 for r in blender_radius]))
|
|
|
|
def test_import_curves_linear(self):
|
|
"""Test importing linear curve variations."""
|
|
|
|
infile = str(self.testdir / "usd_curve_linear_all.usda")
|
|
res = bpy.ops.wm.usd_import(filepath=infile)
|
|
self.assertEqual({'FINISHED'}, res, f"Unable to import USD file {infile}")
|
|
|
|
curves = [o for o in bpy.data.objects if o.type == 'CURVES']
|
|
self.assertEqual(8, len(curves), f"Test scene {infile} should have 8 curves; found {len(curves)}")
|
|
|
|
stage = Usd.Stage.Open(infile)
|
|
|
|
blender_curve = bpy.data.objects["linear_nonperiodic_single_constant"].data
|
|
usd_prim = stage.GetPrimAtPath("/root/linear_nonperiodic/single/linear_nonperiodic_single_constant")
|
|
self.check_curve(blender_curve, UsdGeom.BasisCurves(usd_prim))
|
|
|
|
blender_curve = bpy.data.objects["linear_nonperiodic_single_varying"].data
|
|
usd_prim = stage.GetPrimAtPath("/root/linear_nonperiodic/single/linear_nonperiodic_single_varying")
|
|
self.check_curve(blender_curve, UsdGeom.BasisCurves(usd_prim))
|
|
|
|
blender_curve = bpy.data.objects["linear_nonperiodic_multiple_constant"].data
|
|
usd_prim = stage.GetPrimAtPath("/root/linear_nonperiodic/multiple/linear_nonperiodic_multiple_constant")
|
|
self.check_curve(blender_curve, UsdGeom.BasisCurves(usd_prim))
|
|
|
|
blender_curve = bpy.data.objects["linear_nonperiodic_multiple_varying"].data
|
|
usd_prim = stage.GetPrimAtPath("/root/linear_nonperiodic/multiple/linear_nonperiodic_multiple_varying")
|
|
self.check_curve(blender_curve, UsdGeom.BasisCurves(usd_prim))
|
|
|
|
blender_curve = bpy.data.objects["linear_periodic_single_constant"].data
|
|
usd_prim = stage.GetPrimAtPath("/root/linear_periodic/single/linear_periodic_single_constant")
|
|
self.check_curve(blender_curve, UsdGeom.BasisCurves(usd_prim))
|
|
|
|
blender_curve = bpy.data.objects["linear_periodic_single_varying"].data
|
|
usd_prim = stage.GetPrimAtPath("/root/linear_periodic/single/linear_periodic_single_varying")
|
|
self.check_curve(blender_curve, UsdGeom.BasisCurves(usd_prim))
|
|
|
|
blender_curve = bpy.data.objects["linear_periodic_multiple_constant"].data
|
|
usd_prim = stage.GetPrimAtPath("/root/linear_periodic/multiple/linear_periodic_multiple_constant")
|
|
self.check_curve(blender_curve, UsdGeom.BasisCurves(usd_prim))
|
|
|
|
blender_curve = bpy.data.objects["linear_periodic_multiple_varying"].data
|
|
usd_prim = stage.GetPrimAtPath("/root/linear_periodic/multiple/linear_periodic_multiple_varying")
|
|
self.check_curve(blender_curve, UsdGeom.BasisCurves(usd_prim))
|
|
|
|
def test_import_curves_bezier(self):
|
|
"""Test importing bezier curve variations."""
|
|
|
|
infile = str(self.testdir / "usd_curve_bezier_all.usda")
|
|
res = bpy.ops.wm.usd_import(filepath=infile)
|
|
self.assertEqual({'FINISHED'}, res, f"Unable to import USD file {infile}")
|
|
|
|
curves = [o for o in bpy.data.objects if o.type == 'CURVES']
|
|
self.assertEqual(12, len(curves), f"Test scene {infile} should have 12 curves; found {len(curves)}")
|
|
|
|
stage = Usd.Stage.Open(infile)
|
|
|
|
blender_curve = bpy.data.objects["bezier_nonperiodic_single_constant"].data
|
|
usd_prim = stage.GetPrimAtPath("/root/bezier_nonperiodic/single/bezier_nonperiodic_single_constant")
|
|
self.check_curve(blender_curve, UsdGeom.BasisCurves(usd_prim))
|
|
|
|
blender_curve = bpy.data.objects["bezier_nonperiodic_single_varying"].data
|
|
usd_prim = stage.GetPrimAtPath("/root/bezier_nonperiodic/single/bezier_nonperiodic_single_varying")
|
|
self.check_curve(blender_curve, UsdGeom.BasisCurves(usd_prim))
|
|
|
|
blender_curve = bpy.data.objects["bezier_nonperiodic_single_vertex"].data
|
|
usd_prim = stage.GetPrimAtPath("/root/bezier_nonperiodic/single/bezier_nonperiodic_single_vertex")
|
|
self.check_curve(blender_curve, UsdGeom.BasisCurves(usd_prim))
|
|
|
|
blender_curve = bpy.data.objects["bezier_nonperiodic_multiple_constant"].data
|
|
usd_prim = stage.GetPrimAtPath("/root/bezier_nonperiodic/multiple/bezier_nonperiodic_multiple_constant")
|
|
self.check_curve(blender_curve, UsdGeom.BasisCurves(usd_prim))
|
|
|
|
blender_curve = bpy.data.objects["bezier_nonperiodic_multiple_varying"].data
|
|
usd_prim = stage.GetPrimAtPath("/root/bezier_nonperiodic/multiple/bezier_nonperiodic_multiple_varying")
|
|
self.check_curve(blender_curve, UsdGeom.BasisCurves(usd_prim))
|
|
|
|
blender_curve = bpy.data.objects["bezier_nonperiodic_multiple_vertex"].data
|
|
usd_prim = stage.GetPrimAtPath("/root/bezier_nonperiodic/multiple/bezier_nonperiodic_multiple_vertex")
|
|
self.check_curve(blender_curve, UsdGeom.BasisCurves(usd_prim))
|
|
|
|
blender_curve = bpy.data.objects["bezier_periodic_single_constant"].data
|
|
usd_prim = stage.GetPrimAtPath("/root/bezier_periodic/single/bezier_periodic_single_constant")
|
|
self.check_curve(blender_curve, UsdGeom.BasisCurves(usd_prim))
|
|
|
|
blender_curve = bpy.data.objects["bezier_periodic_single_varying"].data
|
|
usd_prim = stage.GetPrimAtPath("/root/bezier_periodic/single/bezier_periodic_single_varying")
|
|
self.check_curve(blender_curve, UsdGeom.BasisCurves(usd_prim))
|
|
|
|
blender_curve = bpy.data.objects["bezier_periodic_single_vertex"].data
|
|
usd_prim = stage.GetPrimAtPath("/root/bezier_periodic/single/bezier_periodic_single_vertex")
|
|
self.check_curve(blender_curve, UsdGeom.BasisCurves(usd_prim))
|
|
|
|
blender_curve = bpy.data.objects["bezier_periodic_multiple_constant"].data
|
|
usd_prim = stage.GetPrimAtPath("/root/bezier_periodic/multiple/bezier_periodic_multiple_constant")
|
|
self.check_curve(blender_curve, UsdGeom.BasisCurves(usd_prim))
|
|
|
|
blender_curve = bpy.data.objects["bezier_periodic_multiple_varying"].data
|
|
usd_prim = stage.GetPrimAtPath("/root/bezier_periodic/multiple/bezier_periodic_multiple_varying")
|
|
self.check_curve(blender_curve, UsdGeom.BasisCurves(usd_prim))
|
|
|
|
blender_curve = bpy.data.objects["bezier_periodic_multiple_vertex"].data
|
|
usd_prim = stage.GetPrimAtPath("/root/bezier_periodic/multiple/bezier_periodic_multiple_vertex")
|
|
self.check_curve(blender_curve, UsdGeom.BasisCurves(usd_prim))
|
|
|
|
def test_import_point_instancer(self):
|
|
"""Test importing a typical point instancer setup."""
|
|
|
|
infile = str(self.testdir / "usd_nested_point_instancer.usda")
|
|
res = bpy.ops.wm.usd_import(filepath=infile)
|
|
self.assertEqual({'FINISHED'}, res, f"Unable to import USD file {infile}")
|
|
|
|
pointclouds = [o for o in bpy.data.objects if o.type == 'POINTCLOUD']
|
|
self.assertEqual(
|
|
2,
|
|
len(pointclouds),
|
|
f"Test scene {infile} should have 2 pointclouds; found {len(pointclouds)}")
|
|
|
|
vertical_points = len(bpy.data.pointclouds['verticalpoints'].attributes["position"].data)
|
|
horizontal_points = len(bpy.data.pointclouds['horizontalpoints'].attributes["position"].data)
|
|
self.assertEqual(3, vertical_points)
|
|
self.assertEqual(2, horizontal_points)
|
|
|
|
def test_import_light_types(self):
|
|
"""Test importing light types and attributes."""
|
|
|
|
def rename_active(new_name):
|
|
active_ob = bpy.context.view_layer.objects.active
|
|
active_ob.name = new_name
|
|
active_ob.data.name = new_name
|
|
|
|
# Use the current scene to first create and export the lights
|
|
bpy.ops.object.light_add(type='POINT', align='WORLD', location=(0, 0, 0), scale=(1, 1, 1))
|
|
bpy.context.active_object.data.energy = 2
|
|
bpy.context.active_object.data.shadow_soft_size = 2.2
|
|
|
|
bpy.ops.object.light_add(type='SPOT', align='WORLD', location=(0, 0, 0), scale=(1, 1, 1))
|
|
rename_active("Spot")
|
|
bpy.context.active_object.data.energy = 3
|
|
bpy.context.active_object.data.shadow_soft_size = 3.3
|
|
bpy.context.active_object.data.spot_blend = 0.25
|
|
bpy.context.active_object.data.spot_size = math.radians(60)
|
|
|
|
bpy.ops.object.light_add(type='SPOT', align='WORLD', location=(0, 0, 0), scale=(1, 1, 1))
|
|
rename_active("Spot_point")
|
|
bpy.context.active_object.data.energy = 3.5
|
|
bpy.context.active_object.data.shadow_soft_size = 0
|
|
bpy.context.active_object.data.spot_blend = 0.25
|
|
bpy.context.active_object.data.spot_size = math.radians(60)
|
|
|
|
bpy.ops.object.light_add(type='SUN', align='WORLD', location=(0, 0, 0), scale=(1, 1, 1))
|
|
bpy.context.active_object.data.energy = 4
|
|
bpy.context.active_object.data.angle = math.radians(1)
|
|
|
|
bpy.ops.object.light_add(type='AREA', align='WORLD', location=(0, 0, 0), scale=(1, 1, 1))
|
|
rename_active("Area_rect")
|
|
bpy.context.active_object.data.energy = 5
|
|
bpy.context.active_object.data.shape = 'RECTANGLE'
|
|
bpy.context.active_object.data.size = 0.5
|
|
bpy.context.active_object.data.size_y = 1.5
|
|
|
|
bpy.ops.object.light_add(type='AREA', align='WORLD', location=(0, 0, 0), scale=(1, 1, 1))
|
|
rename_active("Area_square")
|
|
bpy.context.active_object.data.energy = 5.5
|
|
bpy.context.active_object.data.shape = 'SQUARE'
|
|
bpy.context.active_object.data.size = 0.7
|
|
|
|
bpy.ops.object.light_add(type='AREA', align='WORLD', location=(0, 0, 0), scale=(1, 1, 1))
|
|
rename_active("Area_disk")
|
|
bpy.context.active_object.data.energy = 6
|
|
bpy.context.active_object.data.shape = 'DISK'
|
|
bpy.context.active_object.data.size = 2
|
|
|
|
bpy.ops.object.light_add(type='AREA', align='WORLD', location=(0, 0, 0), scale=(1, 1, 1))
|
|
rename_active("Area_ellipse")
|
|
bpy.context.active_object.data.energy = 6.5
|
|
bpy.context.active_object.data.shape = 'ELLIPSE'
|
|
bpy.context.active_object.data.size = 3
|
|
bpy.context.active_object.data.size_y = 5
|
|
|
|
test_path = self.tempdir / "temp_lights.usda"
|
|
res = bpy.ops.wm.usd_export(filepath=str(test_path), evaluation_mode="RENDER")
|
|
self.assertEqual({'FINISHED'}, res, f"Unable to export to {test_path}")
|
|
|
|
# Reload the empty file and import back in
|
|
bpy.ops.wm.open_mainfile(filepath=str(self.testdir / "empty.blend"))
|
|
infile = str(test_path)
|
|
res = bpy.ops.wm.usd_import(filepath=infile)
|
|
self.assertEqual({'FINISHED'}, res, f"Unable to import USD file {infile}")
|
|
|
|
lights = [o for o in bpy.data.objects if o.type == 'LIGHT']
|
|
self.assertEqual(8, len(lights), f"Test scene {infile} should have 8 lights; found {len(lights)}")
|
|
|
|
blender_light = bpy.data.lights["Point"]
|
|
self.assertAlmostEqual(blender_light.energy, 2, 3)
|
|
self.assertAlmostEqual(blender_light.shadow_soft_size, 2.2, 3)
|
|
|
|
blender_light = bpy.data.lights["Spot"]
|
|
self.assertAlmostEqual(blender_light.energy, 3, 3)
|
|
self.assertAlmostEqual(blender_light.shadow_soft_size, 3.3, 3)
|
|
self.assertAlmostEqual(blender_light.spot_blend, 0.25, 3)
|
|
self.assertAlmostEqual(blender_light.spot_size, math.radians(60), 3)
|
|
|
|
blender_light = bpy.data.lights["Spot_point"]
|
|
self.assertAlmostEqual(blender_light.energy, 3.5, 3)
|
|
self.assertAlmostEqual(blender_light.shadow_soft_size, 0, 3)
|
|
self.assertAlmostEqual(blender_light.spot_blend, 0.25, 3)
|
|
self.assertAlmostEqual(blender_light.spot_size, math.radians(60), 3)
|
|
|
|
blender_light = bpy.data.lights["Sun"]
|
|
self.assertAlmostEqual(blender_light.energy, 4, 3)
|
|
self.assertAlmostEqual(blender_light.angle, math.radians(1), 3)
|
|
|
|
blender_light = bpy.data.lights["Area_rect"]
|
|
self.assertAlmostEqual(blender_light.energy, 5, 3)
|
|
self.assertEqual(blender_light.shape, 'RECTANGLE')
|
|
self.assertAlmostEqual(blender_light.size, 0.5, 3)
|
|
self.assertAlmostEqual(blender_light.size_y, 1.5, 3)
|
|
|
|
blender_light = bpy.data.lights["Area_square"]
|
|
self.assertAlmostEqual(blender_light.energy, 5.5, 3)
|
|
self.assertEqual(blender_light.shape, 'RECTANGLE') # We read as rectangle to mirror what USD supports
|
|
self.assertAlmostEqual(blender_light.size, 0.7, 3)
|
|
|
|
blender_light = bpy.data.lights["Area_disk"]
|
|
self.assertAlmostEqual(blender_light.energy, 6, 3)
|
|
self.assertEqual(blender_light.shape, 'DISK')
|
|
self.assertAlmostEqual(blender_light.size, 2, 3)
|
|
|
|
blender_light = bpy.data.lights["Area_ellipse"]
|
|
self.assertAlmostEqual(blender_light.energy, 6.5, 3)
|
|
self.assertEqual(blender_light.shape, 'DISK') # We read as disk to mirror what USD supports
|
|
self.assertAlmostEqual(blender_light.size, 4, 3)
|
|
|
|
def check_attribute(self, blender_data, attribute_name, domain, data_type, elements_len):
|
|
attr = blender_data.attributes[attribute_name]
|
|
self.assertEqual(attr.domain, domain)
|
|
self.assertEqual(attr.data_type, data_type)
|
|
self.assertEqual(len(attr.data), elements_len)
|
|
|
|
def check_attribute_missing(self, blender_data, attribute_name):
|
|
self.assertFalse(attribute_name in blender_data.attributes)
|
|
|
|
def test_import_attributes(self):
|
|
"""Test importing objects with all attribute data types."""
|
|
|
|
# Use the existing attributes test file to create the USD file
|
|
# for import. It is validated as part of the bl_usd_export test.
|
|
bpy.ops.wm.open_mainfile(filepath=str(self.testdir / "usd_attribute_test.blend"))
|
|
|
|
testfile = str(self.tempdir / "usd_attribute_test.usda")
|
|
res = bpy.ops.wm.usd_export(filepath=testfile, evaluation_mode="RENDER")
|
|
self.assertEqual({'FINISHED'}, res, f"Unable to export to {testfile}")
|
|
|
|
# Reload the empty file and import back in
|
|
bpy.ops.wm.open_mainfile(filepath=str(self.testdir / "empty.blend"))
|
|
res = bpy.ops.wm.usd_import(filepath=testfile)
|
|
self.assertEqual({'FINISHED'}, res, f"Unable to import USD file {testfile}")
|
|
|
|
# Verify all attributes on the Mesh
|
|
# Note: USD does not support signed 8-bit types so there is
|
|
# currently no equivalent to Blender's INT8 data type
|
|
# TODO: Blender is missing support for reading USD quat/matrix data types
|
|
mesh = bpy.data.objects["Mesh"].data
|
|
|
|
self.check_attribute(mesh, "p_bool", 'POINT', 'BOOLEAN', 4)
|
|
self.check_attribute(mesh, "p_int8", 'POINT', 'INT8', 4)
|
|
self.check_attribute(mesh, "p_int32", 'POINT', 'INT', 4)
|
|
self.check_attribute(mesh, "p_float", 'POINT', 'FLOAT', 4)
|
|
self.check_attribute(mesh, "p_byte_color", 'POINT', 'FLOAT_COLOR', 4)
|
|
self.check_attribute(mesh, "p_color", 'POINT', 'FLOAT_COLOR', 4)
|
|
self.check_attribute(mesh, "p_vec2", 'CORNER', 'FLOAT2', 4) # TODO: Bug - wrong domain
|
|
self.check_attribute(mesh, "p_vec3", 'POINT', 'FLOAT_VECTOR', 4)
|
|
self.check_attribute_missing(mesh, "p_quat")
|
|
self.check_attribute_missing(mesh, "p_mat4x4")
|
|
|
|
self.check_attribute(mesh, "f_bool", 'FACE', 'BOOLEAN', 1)
|
|
self.check_attribute(mesh, "f_int8", 'FACE', 'INT8', 1)
|
|
self.check_attribute(mesh, "f_int32", 'FACE', 'INT', 1)
|
|
self.check_attribute(mesh, "f_float", 'FACE', 'FLOAT', 1)
|
|
self.check_attribute(mesh, "f_byte_color", 'FACE', 'FLOAT_COLOR', 1)
|
|
self.check_attribute(mesh, "f_color", 'FACE', 'FLOAT_COLOR', 1)
|
|
self.check_attribute(mesh, "f_vec2", 'FACE', 'FLOAT2', 1)
|
|
self.check_attribute(mesh, "f_vec3", 'FACE', 'FLOAT_VECTOR', 1)
|
|
self.check_attribute_missing(mesh, "f_quat")
|
|
self.check_attribute_missing(mesh, "f_mat4x4")
|
|
|
|
self.check_attribute(mesh, "fc_bool", 'CORNER', 'BOOLEAN', 4)
|
|
self.check_attribute(mesh, "fc_int8", 'CORNER', 'INT8', 4)
|
|
self.check_attribute(mesh, "fc_int32", 'CORNER', 'INT', 4)
|
|
self.check_attribute(mesh, "fc_float", 'CORNER', 'FLOAT', 4)
|
|
self.check_attribute(mesh, "fc_byte_color", 'CORNER', 'FLOAT_COLOR', 4)
|
|
self.check_attribute(mesh, "fc_color", 'CORNER', 'FLOAT_COLOR', 4)
|
|
self.check_attribute(mesh, "fc_vec2", 'CORNER', 'FLOAT2', 4)
|
|
self.check_attribute(mesh, "fc_vec3", 'CORNER', 'FLOAT_VECTOR', 4)
|
|
self.check_attribute_missing(mesh, "fc_quat")
|
|
self.check_attribute_missing(mesh, "fc_mat4x4")
|
|
|
|
# Find the non "bezier" Curves object -- Has 2 curves (12 vertices each)
|
|
all_curves = [o for o in bpy.data.objects if o.type == 'CURVES']
|
|
curves = [o for o in all_curves if not o.parent.name.startswith("Curve_bezier")]
|
|
curves = curves[0].data
|
|
|
|
self.check_attribute(curves, "p_bool", 'POINT', 'BOOLEAN', 24)
|
|
self.check_attribute(curves, "p_int8", 'POINT', 'INT8', 24)
|
|
self.check_attribute(curves, "p_int32", 'POINT', 'INT', 24)
|
|
self.check_attribute(curves, "p_float", 'POINT', 'FLOAT', 24)
|
|
self.check_attribute(curves, "p_byte_color", 'POINT', 'FLOAT_COLOR', 24)
|
|
self.check_attribute(curves, "p_color", 'POINT', 'FLOAT_COLOR', 24)
|
|
self.check_attribute(curves, "p_vec2", 'POINT', 'FLOAT2', 24)
|
|
self.check_attribute(curves, "p_vec3", 'POINT', 'FLOAT_VECTOR', 24)
|
|
self.check_attribute(curves, "p_quat", 'POINT', 'QUATERNION', 24)
|
|
self.check_attribute_missing(curves, "p_mat4x4")
|
|
|
|
self.check_attribute(curves, "sp_bool", 'CURVE', 'BOOLEAN', 2)
|
|
self.check_attribute(curves, "sp_int8", 'CURVE', 'INT8', 2)
|
|
self.check_attribute(curves, "sp_int32", 'CURVE', 'INT', 2)
|
|
self.check_attribute(curves, "sp_float", 'CURVE', 'FLOAT', 2)
|
|
self.check_attribute(curves, "sp_byte_color", 'CURVE', 'FLOAT_COLOR', 2)
|
|
self.check_attribute(curves, "sp_color", 'CURVE', 'FLOAT_COLOR', 2)
|
|
self.check_attribute(curves, "sp_vec2", 'CURVE', 'FLOAT2', 2)
|
|
self.check_attribute(curves, "sp_vec3", 'CURVE', 'FLOAT_VECTOR', 2)
|
|
self.check_attribute(curves, "sp_quat", 'CURVE', 'QUATERNION', 2)
|
|
self.check_attribute_missing(curves, "sp_mat4x4")
|
|
|
|
# Find the "bezier" Curves object -- Has 3 curves (2, 3, and 5 control points)
|
|
curves = [o for o in all_curves if o.parent.name.startswith("Curve_bezier")]
|
|
curves = curves[0].data
|
|
|
|
self.check_attribute(curves, "p_bool", 'POINT', 'BOOLEAN', 10)
|
|
self.check_attribute(curves, "p_int8", 'POINT', 'INT8', 10)
|
|
self.check_attribute(curves, "p_int32", 'POINT', 'INT', 10)
|
|
self.check_attribute(curves, "p_float", 'POINT', 'FLOAT', 10)
|
|
self.check_attribute(curves, "p_byte_color", 'POINT', 'FLOAT_COLOR', 10)
|
|
self.check_attribute(curves, "p_color", 'POINT', 'FLOAT_COLOR', 10)
|
|
self.check_attribute(curves, "p_vec2", 'POINT', 'FLOAT2', 10)
|
|
self.check_attribute(curves, "p_vec3", 'POINT', 'FLOAT_VECTOR', 10)
|
|
self.check_attribute(curves, "p_quat", 'POINT', 'QUATERNION', 10)
|
|
self.check_attribute_missing(curves, "p_mat4x4")
|
|
|
|
self.check_attribute(curves, "sp_bool", 'CURVE', 'BOOLEAN', 3)
|
|
self.check_attribute(curves, "sp_int8", 'CURVE', 'INT8', 3)
|
|
self.check_attribute(curves, "sp_int32", 'CURVE', 'INT', 3)
|
|
self.check_attribute(curves, "sp_float", 'CURVE', 'FLOAT', 3)
|
|
self.check_attribute(curves, "sp_byte_color", 'CURVE', 'FLOAT_COLOR', 3)
|
|
self.check_attribute(curves, "sp_color", 'CURVE', 'FLOAT_COLOR', 3)
|
|
self.check_attribute(curves, "sp_vec2", 'CURVE', 'FLOAT2', 3)
|
|
self.check_attribute(curves, "sp_vec3", 'CURVE', 'FLOAT_VECTOR', 3)
|
|
self.check_attribute(curves, "sp_quat", 'CURVE', 'QUATERNION', 3)
|
|
self.check_attribute_missing(curves, "sp_mat4x4")
|
|
|
|
def test_import_attributes_varying(self):
|
|
"""Test importing objects with time-varying positions, velocities, and attributes."""
|
|
|
|
# Use the existing attributes test file to create the USD file
|
|
# for import. It is validated as part of the bl_usd_export test.
|
|
bpy.ops.wm.open_mainfile(filepath=str(self.testdir / "usd_attribute_varying_test.blend"))
|
|
for frame in range(1, 16):
|
|
bpy.context.scene.frame_set(frame)
|
|
bpy.context.scene.frame_set(1)
|
|
|
|
testfile = str(self.tempdir / "usd_attribute_varying_test.usda")
|
|
res = bpy.ops.wm.usd_export(filepath=testfile, export_animation=True, evaluation_mode="RENDER")
|
|
self.assertEqual({'FINISHED'}, res, f"Unable to export to {testfile}")
|
|
|
|
# Reload the empty file and import back in
|
|
bpy.ops.wm.open_mainfile(filepath=str(self.testdir / "empty.blend"))
|
|
res = bpy.ops.wm.usd_import(filepath=testfile)
|
|
self.assertEqual({'FINISHED'}, res, f"Unable to import USD file {testfile}")
|
|
|
|
stage = Usd.Stage.Open(testfile)
|
|
|
|
def round_vector(vector):
|
|
return (round(vector[0], 5), round(vector[1], 5), round(vector[2], 5))
|
|
|
|
#
|
|
# Validate Mesh data
|
|
#
|
|
blender_mesh = [bpy.data.objects["mesh1"], bpy.data.objects["mesh2"], bpy.data.objects["mesh3"]]
|
|
usd_mesh = [UsdGeom.Mesh(stage.GetPrimAtPath("/root/mesh1/mesh1")),
|
|
UsdGeom.Mesh(stage.GetPrimAtPath("/root/mesh2/mesh2")),
|
|
UsdGeom.Mesh(stage.GetPrimAtPath("/root/mesh3/mesh3"))]
|
|
mesh_num = len(blender_mesh)
|
|
|
|
# A MeshSequenceCache modifier should be present on every imported object
|
|
for i in range(0, mesh_num):
|
|
self.assertTrue(len(blender_mesh[i].modifiers) == 1 and blender_mesh[i].modifiers[0].type ==
|
|
'MESH_SEQUENCE_CACHE', f"{blender_mesh[i].name} has incorrect modifiers")
|
|
|
|
# Compare Blender and USD data against each other for every frame
|
|
for frame in range(1, 16):
|
|
bpy.context.scene.frame_set(frame)
|
|
depsgraph = bpy.context.evaluated_depsgraph_get()
|
|
for i in range(0, mesh_num):
|
|
blender_mesh[i] = bpy.data.objects["mesh" + str(i + 1)].evaluated_get(depsgraph)
|
|
|
|
# Check positions, velocity, and test data
|
|
for i in range(0, mesh_num):
|
|
blender_pos_data = [round_vector(d.vector) for d in blender_mesh[i].data.attributes["position"].data]
|
|
blender_vel_data = [round_vector(d.vector) for d in blender_mesh[i].data.attributes["velocity"].data]
|
|
blender_test_data = [round(d.value, 5) for d in blender_mesh[i].data.attributes["test"].data]
|
|
usd_pos_data = [round_vector(d) for d in usd_mesh[i].GetPointsAttr().Get(frame)]
|
|
usd_vel_data = [round_vector(d) for d in usd_mesh[i].GetVelocitiesAttr().Get(frame)]
|
|
usd_test_data = [round(d, 5) for d in UsdGeom.PrimvarsAPI(usd_mesh[i]).GetPrimvar("test").Get(frame)]
|
|
|
|
self.assertEqual(
|
|
blender_pos_data,
|
|
usd_pos_data,
|
|
f"Frame {frame}: {blender_mesh[i].name} positions do not match")
|
|
self.assertEqual(
|
|
blender_vel_data,
|
|
usd_vel_data,
|
|
f"Frame {frame}: {blender_mesh[i].name} velocities do not match")
|
|
self.assertEqual(
|
|
blender_test_data,
|
|
usd_test_data,
|
|
f"Frame {frame}: {blender_mesh[i].name} test attributes do not match")
|
|
|
|
#
|
|
# Validate Point Cloud data
|
|
#
|
|
blender_pointclouds = [
|
|
bpy.data.objects["PointCloud"],
|
|
bpy.data.objects["PointCloud.001"],
|
|
bpy.data.objects["PointCloud.002"],
|
|
bpy.data.objects["PointCloud.003"]]
|
|
usd_points = [UsdGeom.Points(stage.GetPrimAtPath("/root/pointcloud1/PointCloud")),
|
|
UsdGeom.Points(stage.GetPrimAtPath("/root/pointcloud2/PointCloud")),
|
|
UsdGeom.Points(stage.GetPrimAtPath("/root/pointcloud3/PointCloud")),
|
|
UsdGeom.Points(stage.GetPrimAtPath("/root/pointcloud4/PointCloud"))]
|
|
pointclouds_num = len(blender_pointclouds)
|
|
|
|
# Workaround: GeometrySet processing loses the data-block name on export. This is why the
|
|
# .001 etc. names are being used above. Since we need the order of Blender objects to match
|
|
# the order of USD prims, sort by the Y location to make them match in our test setup.
|
|
blender_pointclouds.sort(key=lambda ob: ob.location.y)
|
|
|
|
# A MeshSequenceCache modifier should be present on every imported object
|
|
for i in range(0, pointclouds_num):
|
|
self.assertTrue(len(blender_pointclouds[i].modifiers) == 1 and blender_pointclouds[i].modifiers[0].type ==
|
|
'MESH_SEQUENCE_CACHE', f"{blender_pointclouds[i].name} has incorrect modifiers")
|
|
|
|
# Compare Blender and USD data against each other for every frame
|
|
for frame in range(1, 16):
|
|
bpy.context.scene.frame_set(frame)
|
|
depsgraph = bpy.context.evaluated_depsgraph_get()
|
|
for i in range(0, mesh_num):
|
|
blender_pointclouds[i] = blender_pointclouds[i].evaluated_get(depsgraph)
|
|
|
|
# Check positions, velocity, radius, and test data
|
|
for i in range(0, mesh_num):
|
|
blender_pos_data = [round_vector(d.vector)
|
|
for d in blender_pointclouds[i].data.attributes["position"].data]
|
|
blender_vel_data = [round_vector(d.vector)
|
|
for d in blender_pointclouds[i].data.attributes["velocity"].data]
|
|
blender_radius_data = [round(d.value, 5) for d in blender_pointclouds[i].data.attributes["radius"].data]
|
|
blender_test_data = [round(d.value, 5) for d in blender_pointclouds[i].data.attributes["test"].data]
|
|
usd_pos_data = [round_vector(d) for d in usd_points[i].GetPointsAttr().Get(frame)]
|
|
usd_vel_data = [round_vector(d) for d in usd_points[i].GetVelocitiesAttr().Get(frame)]
|
|
usd_radius_data = [round(d / 2, 5) for d in usd_points[i].GetWidthsAttr().Get(frame)]
|
|
usd_test_data = [round(d, 5) for d in UsdGeom.PrimvarsAPI(usd_points[i]).GetPrimvar("test").Get(frame)]
|
|
|
|
name = usd_points[i].GetPath().GetParentPath().name
|
|
self.assertEqual(
|
|
blender_pos_data,
|
|
usd_pos_data,
|
|
f"Frame {frame}: {name} positions do not match")
|
|
self.assertEqual(
|
|
blender_vel_data,
|
|
usd_vel_data,
|
|
f"Frame {frame}: {name} velocities do not match")
|
|
self.assertEqual(
|
|
blender_radius_data,
|
|
usd_radius_data,
|
|
f"Frame {frame}: {name} radii do not match")
|
|
self.assertEqual(
|
|
blender_test_data,
|
|
usd_test_data,
|
|
f"Frame {frame}: {name} test attributes do not match")
|
|
|
|
def test_import_shapes(self):
|
|
"""Test importing USD Shape prims with time-varying attributes."""
|
|
|
|
infile = str(self.testdir / "usd_shapes_test.usda")
|
|
res = bpy.ops.wm.usd_import(filepath=infile)
|
|
self.assertEqual({'FINISHED'}, res, f"Unable to import USD file {infile}")
|
|
|
|
# Ensure we find the expected number of mesh objects
|
|
blender_objects = [ob for ob in bpy.data.objects if ob.type == 'MESH']
|
|
self.assertEqual(
|
|
6,
|
|
len(blender_objects),
|
|
f"Test scene {infile} should have 6 mesh objects; found {len(blender_objects)}")
|
|
|
|
# A MeshSequenceCache modifier should be present on every imported object
|
|
for ob in blender_objects:
|
|
self.assertTrue(len(ob.modifiers) == 1 and ob.modifiers[0].type ==
|
|
'MESH_SEQUENCE_CACHE', f"{ob.name} has incorrect modifiers")
|
|
|
|
def test_import_id_props(self):
|
|
"""Test importing object and data IDProperties."""
|
|
|
|
# Create our set of ID's with all relevant IDProperty types/values that we support
|
|
bpy.ops.object.empty_add()
|
|
bpy.ops.object.light_add()
|
|
bpy.ops.object.camera_add()
|
|
bpy.ops.mesh.primitive_plane_add()
|
|
|
|
ids = [ob if ob.type == 'EMPTY' else ob.data for ob in bpy.data.objects]
|
|
properties = [
|
|
True, "string", 1, 2.0, [1, 2], [1, 2, 3], [1, 2, 3, 4], [1.0, 2.0], [1.0, 2.0, 3.0], [1.0, 2.0, 3.0, 4.0]
|
|
]
|
|
for id in ids:
|
|
for i, p in enumerate(properties):
|
|
prop_name = "prop" + str(i)
|
|
id[prop_name] = p
|
|
|
|
# Export out this scene twice so we can test both the default "userProperties" namespace as
|
|
# well as a custom namespace
|
|
test_path1 = self.tempdir / "temp_idprops_userProperties_test.usda"
|
|
res = bpy.ops.wm.usd_export(filepath=str(test_path1), evaluation_mode="RENDER")
|
|
self.assertEqual({'FINISHED'}, res, f"Unable to export to {test_path1}")
|
|
|
|
custom_namespace = "customns"
|
|
test_path2 = self.tempdir / "temp_idprops_customns_test.usda"
|
|
res = bpy.ops.wm.usd_export(
|
|
filepath=str(test_path2),
|
|
custom_properties_namespace=custom_namespace,
|
|
evaluation_mode="RENDER")
|
|
self.assertEqual({'FINISHED'}, res, f"Unable to export to {test_path2}")
|
|
|
|
# Also write out another file using attribute types not natively writable by Blender
|
|
test_path3 = self.tempdir / "temp_idprops_extended_test.usda"
|
|
stage = Usd.Stage.CreateNew(str(test_path3))
|
|
xform = UsdGeom.Xform.Define(stage, '/empty')
|
|
xform.GetPrim().CreateAttribute("prop0", Sdf.ValueTypeNames.Half).Set(0.5)
|
|
xform.GetPrim().CreateAttribute("prop1", Sdf.ValueTypeNames.Float).Set(1.5)
|
|
xform.GetPrim().CreateAttribute("prop2", Sdf.ValueTypeNames.Token).Set("tokenstring")
|
|
xform.GetPrim().CreateAttribute("prop3", Sdf.ValueTypeNames.Asset).Set("assetstring")
|
|
xform.GetPrim().CreateAttribute("prop4", Sdf.ValueTypeNames.Half2).Set(Gf.Vec2h(0, 1))
|
|
xform.GetPrim().CreateAttribute("prop5", Sdf.ValueTypeNames.Half3).Set(Gf.Vec3h(0, 1, 2))
|
|
xform.GetPrim().CreateAttribute("prop6", Sdf.ValueTypeNames.Half4).Set(Gf.Vec4h(0, 1, 2, 3))
|
|
xform.GetPrim().CreateAttribute("prop7", Sdf.ValueTypeNames.Float2).Set(Gf.Vec2f(0, 1))
|
|
xform.GetPrim().CreateAttribute("prop8", Sdf.ValueTypeNames.Float3).Set(Gf.Vec3f(0, 1, 2))
|
|
xform.GetPrim().CreateAttribute("prop9", Sdf.ValueTypeNames.Float4).Set(Gf.Vec4f(0, 1, 2, 3))
|
|
stage.GetRootLayer().Save()
|
|
|
|
# Helper functions to check IDProperty validity
|
|
import idprop
|
|
|
|
def assert_all_props_present(properties, ns):
|
|
ids = [ob if ob.type == 'EMPTY' else ob.data for ob in bpy.data.objects]
|
|
for id in ids:
|
|
for i, p in enumerate(properties):
|
|
prop_name = (ns + ":" if ns != "" else "") + "prop" + str(i)
|
|
prop = id[prop_name]
|
|
value = prop.to_list() if type(prop) is idprop.types.IDPropertyArray else prop
|
|
self.assertEqual(p, value, f"Property {prop_name} is incorrect")
|
|
|
|
def assert_no_props_present(properties, ns):
|
|
ids = [ob if ob.type == 'EMPTY' else ob.data for ob in bpy.data.objects]
|
|
for id in ids:
|
|
for i, p in enumerate(properties):
|
|
prop_name = (ns + ":" if ns != "" else "") + "prop" + str(i)
|
|
self.assertTrue(id.get(prop_name) is None, f"Property {prop_name} should not be present")
|
|
|
|
# Reload the empty file and test the relevant combinations of namespaces and import modes
|
|
|
|
infile = str(test_path1)
|
|
bpy.ops.wm.open_mainfile(filepath=str(self.testdir / "empty.blend"))
|
|
res = bpy.ops.wm.usd_import(filepath=infile, attr_import_mode='USER')
|
|
self.assertEqual({'FINISHED'}, res, f"Unable to import USD file {infile}")
|
|
self.assertEqual(len(bpy.data.objects), 4)
|
|
assert_all_props_present(properties, "")
|
|
|
|
infile = str(test_path1)
|
|
bpy.ops.wm.open_mainfile(filepath=str(self.testdir / "empty.blend"))
|
|
res = bpy.ops.wm.usd_import(filepath=infile, attr_import_mode='NONE')
|
|
self.assertEqual({'FINISHED'}, res, f"Unable to import USD file {infile}")
|
|
self.assertEqual(len(bpy.data.objects), 4)
|
|
assert_no_props_present(properties, "")
|
|
|
|
infile = str(test_path2)
|
|
bpy.ops.wm.open_mainfile(filepath=str(self.testdir / "empty.blend"))
|
|
res = bpy.ops.wm.usd_import(filepath=infile, attr_import_mode='ALL')
|
|
self.assertEqual({'FINISHED'}, res, f"Unable to import USD file {infile}")
|
|
self.assertEqual(len(bpy.data.objects), 4)
|
|
assert_all_props_present(properties, custom_namespace)
|
|
|
|
infile = str(test_path2)
|
|
bpy.ops.wm.open_mainfile(filepath=str(self.testdir / "empty.blend"))
|
|
res = bpy.ops.wm.usd_import(filepath=infile, attr_import_mode='USER')
|
|
self.assertEqual({'FINISHED'}, res, f"Unable to import USD file {infile}")
|
|
self.assertEqual(len(bpy.data.objects), 4)
|
|
assert_no_props_present(properties, custom_namespace)
|
|
|
|
infile = str(test_path3)
|
|
bpy.ops.wm.open_mainfile(filepath=str(self.testdir / "empty.blend"))
|
|
res = bpy.ops.wm.usd_import(filepath=infile, attr_import_mode='ALL')
|
|
self.assertEqual({'FINISHED'}, res, f"Unable to import USD file {infile}")
|
|
self.assertEqual(len(bpy.data.objects), 1)
|
|
properties = [
|
|
0.5, 1.5, "tokenstring", "assetstring", [0, 1], [0, 1, 2], [0, 1, 2, 3], [0, 1], [0, 1, 2], [0, 1, 2, 3]
|
|
]
|
|
assert_all_props_present(properties, "")
|
|
|
|
def test_import_usdz_image_processing(self):
|
|
"""Test importing of images from USDZ files in various ways."""
|
|
|
|
# USDZ processing needs the destination directory to exist
|
|
self.tempdir.mkdir(parents=True, exist_ok=True)
|
|
|
|
# Use the existing materials test file to create the USD file
|
|
# for import. It is validated as part of the bl_usd_export test.
|
|
bpy.ops.wm.open_mainfile(filepath=str(self.testdir / "usd_materials_export.blend"))
|
|
usdz1 = str(self.tempdir / "usd_materials_export.usdz")
|
|
res = bpy.ops.wm.usd_export(filepath=usdz1, export_materials=True)
|
|
self.assertEqual({'FINISHED'}, res, f"Unable to export to {usdz1}")
|
|
|
|
usdz2 = str(self.tempdir / "usd_materials_export_downscaled.usdz")
|
|
res = bpy.ops.wm.usd_export(
|
|
filepath=usdz2,
|
|
export_materials=True,
|
|
usdz_downscale_size='CUSTOM',
|
|
usdz_downscale_custom_size=128)
|
|
self.assertEqual({'FINISHED'}, res, f"Unable to export to {usdz2}")
|
|
|
|
def check_image(name, tiles_num, size, is_packed):
|
|
self.assertTrue(name in bpy.data.images)
|
|
|
|
image = bpy.data.images[name]
|
|
self.assertEqual(len(image.tiles), tiles_num)
|
|
self.assertEqual(image.packed_file is not None, is_packed)
|
|
for tile in range(0, tiles_num):
|
|
self.assertEqual(image.tiles[tile].size[0], size)
|
|
self.assertEqual(image.tiles[tile].size[1], size)
|
|
|
|
def check_materials():
|
|
self.assertEqual(len(bpy.data.materials), 7) # +1 because of the "Dots Stroke" material
|
|
self.assertTrue("Clip_With_LessThanInvert" in bpy.data.materials)
|
|
self.assertTrue("Clip_With_Round" in bpy.data.materials)
|
|
self.assertTrue("Material" in bpy.data.materials)
|
|
self.assertTrue("NormalMap" in bpy.data.materials)
|
|
self.assertTrue("NormalMap_Scale_Bias" in bpy.data.materials)
|
|
self.assertTrue("Transforms" in bpy.data.materials)
|
|
|
|
# Reload the empty file and import back in using IMPORT_PACK
|
|
bpy.ops.wm.open_mainfile(filepath=str(self.testdir / "empty.blend"))
|
|
res = bpy.ops.wm.usd_import(filepath=usdz1, import_textures_mode='IMPORT_PACK')
|
|
self.assertEqual({'FINISHED'}, res, f"Unable to import USD file {usdz1}")
|
|
|
|
self.assertEqual(len(bpy.data.images), 4)
|
|
check_image("test_grid_<UDIM>.png", 2, 1024, True)
|
|
check_image("test_normal.exr", 1, 128, True)
|
|
check_image("test_normal_invertY.exr", 1, 128, True)
|
|
check_image("color_121212.hdr", 1, 4, True)
|
|
check_materials()
|
|
|
|
# Reload the empty file and import back in using IMPORT_COPY
|
|
bpy.ops.wm.open_mainfile(filepath=str(self.testdir / "empty.blend"))
|
|
res = bpy.ops.wm.usd_import(
|
|
filepath=usdz2,
|
|
import_textures_mode='IMPORT_COPY',
|
|
import_textures_dir=str(
|
|
self.tempdir))
|
|
self.assertEqual({'FINISHED'}, res, f"Unable to import USD file {usdz2}")
|
|
|
|
self.assertEqual(len(bpy.data.images), 4)
|
|
check_image("test_grid_<UDIM>.png", 2, 128, False)
|
|
check_image("test_normal.exr", 1, 128, False)
|
|
check_image("test_normal_invertY.exr", 1, 128, False)
|
|
check_image("color_121212.hdr", 1, 4, False)
|
|
check_materials()
|
|
|
|
|
|
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()
|