forked from bartvdbraak/blender
479 lines
20 KiB
Python
Executable File
479 lines
20 KiB
Python
Executable File
#!/usr/bin/env python3
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# ##### BEGIN GPL LICENSE BLOCK #####
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software Foundation,
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# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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#
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# ##### END GPL LICENSE BLOCK #####
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# <pep8 compliant>
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import argparse
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import functools
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import shutil
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import pathlib
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import subprocess
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import sys
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import tempfile
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import unittest
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def with_tempdir(wrapped):
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"""Creates a temporary directory for the function, cleaning up after it returns normally.
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When the wrapped function raises an exception, the contents of the temporary directory
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remain available for manual inspection.
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The wrapped function is called with an extra positional argument containing
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the pathlib.Path() of the temporary directory.
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"""
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@functools.wraps(wrapped)
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def decorator(*args, **kwargs):
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dirname = tempfile.mkdtemp(prefix='blender-alembic-test')
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try:
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retval = wrapped(*args, pathlib.Path(dirname), **kwargs)
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except:
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print('Exception in %s, not cleaning up temporary directory %s' % (wrapped, dirname))
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raise
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else:
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shutil.rmtree(dirname)
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return retval
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return decorator
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class AbcPropError(Exception):
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"""Raised when AbstractAlembicTest.abcprop() finds an error."""
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class AbstractAlembicTest(unittest.TestCase):
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@classmethod
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def setUpClass(cls):
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import re
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cls.blender = args.blender
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cls.testdir = pathlib.Path(args.testdir)
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cls.alembic_root = pathlib.Path(args.alembic_root)
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# 'abcls' outputs ANSI colour codes, even when stdout is not a terminal.
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# See https://github.com/alembic/alembic/issues/120
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cls.ansi_remove_re = re.compile(rb'\x1b[^m]*m')
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# 'abcls' array notation, like "name[16]"
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cls.abcls_array = re.compile(r'^(?P<name>[^\[]+)(\[(?P<arraysize>\d+)\])?$')
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def run_blender(self, filepath: str, python_script: str, timeout: int=300) -> str:
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"""Runs Blender by opening a blendfile and executing a script.
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Returns Blender's stdout + stderr combined into one string.
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:param filepath: taken relative to self.testdir.
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:param timeout: in seconds
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"""
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blendfile = self.testdir / filepath
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command = (
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self.blender,
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'--background',
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'-noaudio',
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'--factory-startup',
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'--enable-autoexec',
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str(blendfile),
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'-E', 'CYCLES',
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'--python-exit-code', '47',
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'--python-expr', python_script,
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)
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proc = subprocess.run(command, stdout=subprocess.PIPE, stderr=subprocess.STDOUT,
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timeout=timeout)
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output = proc.stdout.decode('utf8')
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if proc.returncode:
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self.fail('Error %d running Blender:\n%s' % (proc.returncode, output))
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return output
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def abcprop(self, filepath: pathlib.Path, proppath: str) -> dict:
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"""Uses abcls to obtain compound property values from an Alembic object.
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A dict of subproperties is returned, where the values are Python values.
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The Python bindings for Alembic are old, and only compatible with Python 2.x,
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so that's why we can't use them here, and have to rely on other tooling.
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"""
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import collections
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abcls = self.alembic_root / 'bin' / 'abcls'
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command = (str(abcls), '-vl', '%s%s' % (filepath, proppath))
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proc = subprocess.run(command, stdout=subprocess.PIPE, stderr=subprocess.STDOUT,
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timeout=30)
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coloured_output = proc.stdout
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output = self.ansi_remove_re.sub(b'', coloured_output).decode('utf8')
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# Because of the ANSI colour codes, we need to remove those first before
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# decoding to text. This means that we cannot use the universal_newlines
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# parameter to subprocess.run(), and have to do the conversion ourselves
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output = output.replace('\r\n', '\n').replace('\r', '\n')
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if proc.returncode:
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raise AbcPropError('Error %d running abcls:\n%s' % (proc.returncode, output))
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# Mapping from value type to callable that can convert a string to Python values.
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converters = {
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'bool_t': int,
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'uint8_t': int,
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'int16_t': int,
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'int32_t': int,
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'uint64_t': int,
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'float64_t': float,
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'float32_t': float,
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}
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result = {}
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# Ideally we'd get abcls to output JSON, see https://github.com/alembic/alembic/issues/121
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lines = collections.deque(output.split('\n'))
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while lines:
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info = lines.popleft()
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if not info:
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continue
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parts = info.split()
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proptype = parts[0]
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if proptype == 'CompoundProperty':
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# To read those, call self.abcprop() on it.
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continue
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if len(parts) < 2:
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raise ValueError('Error parsing result from abcprop: %s', info.strip())
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valtype_and_arrsize, name_and_extent = parts[1:]
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# Parse name and extent
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m = self.abcls_array.match(name_and_extent)
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if not m:
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self.fail('Unparsable name/extent from abcls: %s' % name_and_extent)
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name, extent = m.group('name'), m.group('arraysize')
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if extent != '1':
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self.fail('Unsupported extent %s for property %s/%s' % (extent, proppath, name))
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# Parse type
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m = self.abcls_array.match(valtype_and_arrsize)
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if not m:
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self.fail('Unparsable value type from abcls: %s' % valtype_and_arrsize)
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valtype, scalarsize = m.group('name'), m.group('arraysize')
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# Convert values
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try:
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conv = converters[valtype]
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except KeyError:
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self.fail('Unsupported type %s for property %s/%s' % (valtype, proppath, name))
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def convert_single_line(linevalue):
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try:
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if scalarsize is None:
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return conv(linevalue)
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else:
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return [conv(v.strip()) for v in linevalue.split(',')]
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except ValueError as ex:
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return str(ex)
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if proptype == 'ScalarProperty':
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value = lines.popleft()
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result[name] = convert_single_line(value)
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elif proptype == 'ArrayProperty':
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arrayvalue = []
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# Arrays consist of a variable number of items, and end in a blank line.
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while True:
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linevalue = lines.popleft()
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if not linevalue:
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break
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arrayvalue.append(convert_single_line(linevalue))
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result[name] = arrayvalue
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else:
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self.fail('Unsupported type %s for property %s/%s' % (proptype, proppath, name))
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return result
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def assertAlmostEqualFloatArray(self, actual, expect, places=6, delta=None):
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"""Asserts that the arrays of floats are almost equal."""
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self.assertEqual(len(actual), len(expect),
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'Actual array has %d items, expected %d' % (len(actual), len(expect)))
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for idx, (act, exp) in enumerate(zip(actual, expect)):
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self.assertAlmostEqual(act, exp, places=places, delta=delta,
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msg='%f != %f at index %d' % (act, exp, idx))
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class HierarchicalAndFlatExportTest(AbstractAlembicTest):
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@with_tempdir
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def test_hierarchical_export(self, tempdir: pathlib.Path):
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abc = tempdir / 'cubes_hierarchical.abc'
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script = "import bpy; bpy.ops.wm.alembic_export(filepath='%s', start=1, end=1, " \
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"renderable_only=True, visible_layers_only=True, flatten=False)" % abc.as_posix()
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self.run_blender('cubes-hierarchy.blend', script)
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# Now check the resulting Alembic file.
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xform = self.abcprop(abc, '/Cube/Cube_002/Cube_012/.xform')
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self.assertEqual(1, xform['.inherits'])
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self.assertAlmostEqualFloatArray(
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xform['.vals'],
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[1.0, 0.0, 0.0, 0.0,
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0.0, 1.0, 0.0, 0.0,
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0.0, 0.0, 1.0, 0.0,
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3.07484, -2.92265, 0.0586434, 1.0]
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)
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@with_tempdir
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def test_flat_export(self, tempdir: pathlib.Path):
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abc = tempdir / 'cubes_flat.abc'
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script = "import bpy; bpy.ops.wm.alembic_export(filepath='%s', start=1, end=1, " \
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"renderable_only=True, visible_layers_only=True, flatten=True)" % abc.as_posix()
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self.run_blender('cubes-hierarchy.blend', script)
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# Now check the resulting Alembic file.
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xform = self.abcprop(abc, '/Cube_012/.xform')
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self.assertEqual(0, xform['.inherits'])
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self.assertAlmostEqualFloatArray(
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xform['.vals'],
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[0.343134, 0.485243, 0.804238, 0,
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0.0, 0.856222, -0.516608, 0,
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-0.939287, 0.177266, 0.293799, 0,
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1, 3, 4, 1],
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)
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class DupliGroupExportTest(AbstractAlembicTest):
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@with_tempdir
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def test_hierarchical_export(self, tempdir: pathlib.Path):
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abc = tempdir / 'dupligroup_hierarchical.abc'
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script = "import bpy; bpy.ops.wm.alembic_export(filepath='%s', start=1, end=1, " \
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"renderable_only=True, visible_layers_only=True, flatten=False)" % abc.as_posix()
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self.run_blender('dupligroup-scene.blend', script)
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# Now check the resulting Alembic file.
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xform = self.abcprop(abc, '/Real_Cube/Linked_Suzanne/Cylinder/Suzanne/.xform')
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self.assertEqual(1, xform['.inherits'])
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self.assertAlmostEqualFloatArray(
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xform['.vals'],
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[1.0, 0.0, 0.0, 0.0,
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0.0, 1.0, 0.0, 0.0,
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0.0, 0.0, 1.0, 0.0,
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0.0, 2.0, 0.0, 1.0]
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)
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@with_tempdir
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def test_flat_export(self, tempdir: pathlib.Path):
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abc = tempdir / 'dupligroup_hierarchical.abc'
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script = "import bpy; bpy.ops.wm.alembic_export(filepath='%s', start=1, end=1, " \
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"renderable_only=True, visible_layers_only=True, flatten=True)" % abc.as_posix()
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self.run_blender('dupligroup-scene.blend', script)
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# Now check the resulting Alembic file.
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xform = self.abcprop(abc, '/Suzanne/.xform')
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self.assertEqual(0, xform['.inherits'])
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self.assertAlmostEqualFloatArray(
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xform['.vals'],
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[1.5, 0.0, 0.0, 0.0,
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0.0, 1.5, 0.0, 0.0,
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0.0, 0.0, 1.5, 0.0,
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2.0, 3.0, 0.0, 1.0]
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)
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class CurveExportTest(AbstractAlembicTest):
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@with_tempdir
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def test_export_single_curve(self, tempdir: pathlib.Path):
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abc = tempdir / 'single-curve.abc'
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script = "import bpy; bpy.ops.wm.alembic_export(filepath='%s', start=1, end=1, " \
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"renderable_only=True, visible_layers_only=True, flatten=False)" % abc.as_posix()
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self.run_blender('single-curve.blend', script)
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# Now check the resulting Alembic file.
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abcprop = self.abcprop(abc, '/NurbsCurve/NurbsCurveShape/.geom')
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self.assertEqual(abcprop['.orders'], [4])
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abcprop = self.abcprop(abc, '/NurbsCurve/NurbsCurveShape/.geom/.userProperties')
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self.assertEqual(abcprop['blender:resolution'], 10)
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class HairParticlesExportTest(AbstractAlembicTest):
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"""Tests exporting with/without hair/particles.
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Just a basic test to ensure that the enabling/disabling works, and that export
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works at all. NOT testing the quality/contents of the exported file.
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"""
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def _do_test(self, tempdir: pathlib.Path, export_hair: bool, export_particles: bool) -> pathlib.Path:
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abc = tempdir / 'hair-particles.abc'
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script = "import bpy; bpy.ops.wm.alembic_export(filepath='%s', start=1, end=1, " \
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"renderable_only=True, visible_layers_only=True, flatten=False, " \
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"export_hair=%r, export_particles=%r, as_background_job=False)" \
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% (abc.as_posix(), export_hair, export_particles)
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self.run_blender('hair-particles.blend', script)
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return abc
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@with_tempdir
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def test_with_both(self, tempdir: pathlib.Path):
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abc = self._do_test(tempdir, True, True)
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abcprop = self.abcprop(abc, '/Suzanne/Hair system/.geom')
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self.assertIn('nVertices', abcprop)
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abcprop = self.abcprop(abc, '/Suzanne/Non-hair particle system/.geom')
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self.assertIn('.velocities', abcprop)
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abcprop = self.abcprop(abc, '/Suzanne/SuzanneShape/.geom')
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self.assertIn('.faceIndices', abcprop)
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@with_tempdir
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def test_with_hair_only(self, tempdir: pathlib.Path):
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abc = self._do_test(tempdir, True, False)
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abcprop = self.abcprop(abc, '/Suzanne/Hair system/.geom')
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self.assertIn('nVertices', abcprop)
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self.assertRaises(AbcPropError, self.abcprop, abc,
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'/Suzanne/Non-hair particle system/.geom')
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abcprop = self.abcprop(abc, '/Suzanne/SuzanneShape/.geom')
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self.assertIn('.faceIndices', abcprop)
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@with_tempdir
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def test_with_particles_only(self, tempdir: pathlib.Path):
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abc = self._do_test(tempdir, False, True)
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self.assertRaises(AbcPropError, self.abcprop, abc, '/Suzanne/Hair system/.geom')
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abcprop = self.abcprop(abc, '/Suzanne/Non-hair particle system/.geom')
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self.assertIn('.velocities', abcprop)
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abcprop = self.abcprop(abc, '/Suzanne/SuzanneShape/.geom')
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self.assertIn('.faceIndices', abcprop)
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@with_tempdir
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def test_with_neither(self, tempdir: pathlib.Path):
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abc = self._do_test(tempdir, False, False)
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self.assertRaises(AbcPropError, self.abcprop, abc, '/Suzanne/Hair system/.geom')
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self.assertRaises(AbcPropError, self.abcprop, abc,
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'/Suzanne/Non-hair particle system/.geom')
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abcprop = self.abcprop(abc, '/Suzanne/SuzanneShape/.geom')
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self.assertIn('.faceIndices', abcprop)
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class LongNamesExportTest(AbstractAlembicTest):
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@with_tempdir
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def test_export_long_names(self, tempdir: pathlib.Path):
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abc = tempdir / 'long-names.abc'
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script = "import bpy; bpy.ops.wm.alembic_export(filepath='%s', start=1, end=1, " \
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"renderable_only=False, visible_layers_only=False, flatten=False)" % abc.as_posix()
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self.run_blender('long-names.blend', script)
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name_parts = [
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'foG9aeLahgoh5goacee1dah6Hethaghohjaich5pasizairuWigee1ahPeekiGh',
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'yoNgoisheedah2ua0eigh2AeCaiTee5bo0uphoo7Aixephah9racahvaingeeH4',
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'zuthohnoi1thooS3eezoo8seuph2Boo5aefacaethuvee1aequoonoox1sookie',
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'wugh4ciTh3dipiepeequait5uug7thiseek5ca7Eijei5ietaizokohhaecieto',
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'up9aeheenein9oteiX6fohP3thiez6Ahvah0oohah1ep2Eesho4Beboechaipoh',
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'coh4aehiacheTh0ue0eegho9oku1lohl4loht9ohPoongoow7dasiego6yimuis',
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'lohtho8eigahfeipohviepajaix4it2peeQu6Iefee1nevihaes4cee2soh4noy',
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'kaht9ahv0ieXaiyih7ohxe8bah7eeyicahjoa2ohbu7Choxua7oongah6sei4bu',
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'deif0iPaechohkee5nahx6oi2uJeeN7ze3seunohJibe4shai0mah5Iesh3Quai',
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'ChohDahshooNee0NeNohthah0eiDeese3Vu6ohShil1Iey9ja0uebi2quiShae6',
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'Dee1kai7eiph2ahh2nufah3zai3eexeengohQue1caj0eeW0xeghi3eshuadoot',
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'aeshiup3aengajoog0AhCoo5tiu3ieghaeGhie4Tu1ohh1thee8aepheingah1E',
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'ooRa6ahciolohshaifoopeo9ZeiGhae2aech4raisheiWah9AaNga0uas9ahquo',
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'thaepheip2aip6shief4EaXopei8ohPo0ighuiXah2ashowai9nohp4uach6Mei',
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'ohph4yaev3quieji3phophiem3OoNuisheepahng4waithae3Naichai7aw3noo',
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'aibeawaneBahmieyuph8ieng8iopheereeD2uu9Uyee5bei2phahXeir8eeJ8oo',
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'ooshahphei2hoh3uth5chaen7ohsai6uutiesucheichai8ungah9Gie1Aiphie',
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'eiwohchoo7ere2iebohn4Aapheichaelooriiyaoxaik7ooqua7aezahx0aeJei',
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'Vah0ohgohphiefohTheshieghichaichahch5moshoo0zai5eeva7eisi4yae8T',
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'EibeeN0fee0Gohnguz8iec6yeigh7shuNg4eingu3siph9joucahpeidoom4ree',
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'iejiu3shohheeZahHusheimeefaihoh5eecachu5eeZie9ceisugu9taidohT3U',
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'eex6dilakaix5Eetai7xiCh5Jaa8aiD4Ag3tuij1aijohv5fo0heevah8hohs3m',
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'ohqueeNgahraew6uraemohtoo5qua3oojiex6ohqu6Aideibaithaiphuriquie',
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|
'cei0eiN4Shiey7Aeluy3unohboo5choiphahc2mahbei5paephaiKeso1thoog1',
|
|
'ieghif4ohKequ7ong0jah5ooBah0eiGh1caechahnahThae9Shoo0phopashoo4',
|
|
'roh9er3thohwi5am8iequeequuSh3aic0voocai3ihi5nie2abahphupiegh7vu',
|
|
'uv3Quei7wujoo5beingei2aish5op4VaiX0aebai7iwoaPee5pei8ko9IepaPig',
|
|
'co7aegh5beitheesi9lu7jeeQu3johgeiphee9cheichi8aithuDehu2gaeNein',
|
|
'thai3Tiewoo4nuir1ohy4aithiuZ7shae1luuwei5phibohriepe2paeci1Ach8',
|
|
'phoi3ribah7ufuvoh8eigh1oB6deeBaiPohphaghiPieshahfah5EiCi3toogoo',
|
|
'aiM8geil7ooreinee4Cheiwea4yeec8eeshi7Sei4Shoo3wu6ohkaNgooQu1mai',
|
|
'agoo3faciewah9ZeesiXeereek7am0eigaeShie3Tisu8haReeNgoo0ci2Hae5u',
|
|
'Aesatheewiedohshaephaenohbooshee8eu7EiJ8isal1laech2eiHo0noaV3ta',
|
|
'liunguep3ooChoo4eir8ahSie8eenee0oo1TooXu8Cais8Aimo4eir6Phoo3xei',
|
|
'toe9heepeobein3teequachemei0Cejoomef9ujie3ohwae9AiNgiephi3ep0de',
|
|
'ua6xooY9uzaeB3of6sheiyaedohoiS5Eev0Aequ9ahm1zoa5Aegh3ooz9ChahDa',
|
|
'eevasah6Bu9wi7EiwiequumahkaeCheegh6lui8xoh4eeY4ieneavah8phaibun',
|
|
'AhNgei2sioZeeng6phaecheemeehiShie5eFeiTh6ooV8iiphabud0die4siep4',
|
|
'kushe6Xieg6ahQuoo9aex3aipheefiec1esa7OhBuG0ueziep9phai5eegh1vie',
|
|
'Jie5yu8aafuQuoh9shaep3moboh3Pooy7och8oC6obeik6jaew2aiLooweib3ch',
|
|
'ohohjajaivaiRail3odaimei6aekohVaicheip2wu7phieg5Gohsaing2ahxaiy',
|
|
'hahzaht6yaiYu9re9jah9loisiit4ahtoh2quoh9xohishioz4oo4phofu3ogha',
|
|
'pu4oorea0uh2tahB8aiZoonge1aophaes6ogaiK9ailaigeej4zoVou8ielotee',
|
|
'cae2thei3Luphuqu0zeeG8leeZuchahxaicai4ui4Eedohte9uW6gae8Geeh0ea',
|
|
'air7tuy7ohw5sho2Tahpai8aep4so5ria7eaShus5weaqu0Naquei2xaeyoo2ae',
|
|
'vohge4aeCh7ahwoo7Jaex6sohl0Koong4Iejisei8Coir0iemeiz9uru9Iebaep',
|
|
'aepeidie8aiw6waish9gie4Woolae2thuj5phae4phexux7gishaeph4Deu7ooS',
|
|
'vahc5ia0xohHooViT0uyuxookiaquu2ogueth0ahquoudeefohshai8aeThahba',
|
|
'mun3oagah2eequaenohfoo8DaigeghoozaV2eiveeQuee7kah0quaa6tiesheet',
|
|
'ooSet4IdieC4ugow3za0die4ohGoh1oopoh6luaPhaeng4Eechea1hae0eimie5',
|
|
'iedeimadaefu2NeiPaey2jooloov5iehiegeakoo4ueso7aeK9ahqu2Thahkaes',
|
|
'nahquah9Quuu2uuf0aJah7eishi2siegh8ue5eiJa2EeVu8ebohkepoh4dahNgo',
|
|
'io1bie7chioPiej5ae2oohe2fee6ooP2thaeJohjohb9Se8tang3eipaifeimai',
|
|
'oungoqu6dieneejiechez1xeD2Zi9iox2Ahchaiy9ithah3ohVoolu2euQuuawo',
|
|
'thaew0veigei4neishohd8mecaixuqu7eeshiex1chaigohmoThoghoitoTa0Eo',
|
|
'ahroob2phohvaiz0Ohteik2ohtakie6Iu1vitho8IyiyeeleeShae9defaiw9ki',
|
|
'DohHoothohzeaxolai3Toh5eJie7ahlah9reF0ohn1chaipoogain2aibahw4no',
|
|
'aif8lo5she4aich5cho2rie8ieJaujeem2Joongeedae4vie3tah1Leequaix1O',
|
|
'Aang0Shaih6chahthie1ahZ7aewei9thiethee7iuThah3yoongi8ahngiobaa5',
|
|
'iephoBuayoothah0Ru6aichai4aiw8deg1umongauvaixai3ohy6oowohlee8ei',
|
|
'ohn5shigoameer0aejohgoh8oChohlaecho9jie6shu0ahg9Bohngau6paevei9',
|
|
'edahghaishak0paigh1eecuich3aad7yeB0ieD6akeeliem2beifufaekee6eat',
|
|
'hiechahgheloh2zo7Ieghaiph0phahhu8aeyuiKie1xeipheech9zai4aeme0ee',
|
|
'Cube'
|
|
]
|
|
name = '/' + '/'.join(name_parts)
|
|
|
|
# Now check the resulting Alembic file.
|
|
abcprop = self.abcprop(abc, '%s/.xform' % name)
|
|
self.assertEqual(abcprop['.vals'], [
|
|
1.0, 0.0, 0.0, 0.0,
|
|
0.0, 1.0, 0.0, 0.0,
|
|
0.0, 0.0, 1.0, 0.0,
|
|
0.0, 3.0, 0.0, 1.0,
|
|
])
|
|
|
|
abcprop = self.abcprop(abc, '%s/CubeShape/.geom' % name)
|
|
self.assertIn('.faceCounts', abcprop)
|
|
|
|
|
|
if __name__ == '__main__':
|
|
parser = argparse.ArgumentParser()
|
|
parser.add_argument('--blender', required=True)
|
|
parser.add_argument('--testdir', required=True)
|
|
parser.add_argument('--alembic-root', required=True)
|
|
args, remaining = parser.parse_known_args()
|
|
|
|
unittest.main(argv=sys.argv[0:1] + remaining)
|