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# Apache License, Version 2.0
# ./blender.bin --background -noaudio --python tests/python/bl_render_layer.py -- --testdir="/data/lib/tests/"
import unittest
# ############################################################
# Layer Collection Crawler
# ############################################################
def listbase_iter(data, struct, listbase):
element = data.get_pointer((struct, listbase, b'first'))
while element is not None:
yield element
element = element.get_pointer(b'next')
def linkdata_iter(collection, data):
element = collection.get_pointer((data, b'first'))
while element is not None:
yield element
element = element.get_pointer(b'next')
def get_layer_collection(layer_collection):
data = {}
flag = layer_collection.get(b'flag')
data['is_visible'] = (flag & (1 << 0)) != 0;
data['is_selectable'] = (flag & (1 << 1)) != 0;
data['is_folded'] = (flag & (1 << 2)) != 0;
scene_collection = layer_collection.get_pointer(b'scene_collection')
if scene_collection is None:
name = 'Fail!'
else:
name = scene_collection.get(b'name')
data['name'] = name
objects = []
for link in linkdata_iter(layer_collection, b'object_bases'):
ob_base = link.get_pointer(b'data')
ob = ob_base.get_pointer(b'object')
objects.append(ob.get((b'id', b'name'))[2:])
data['objects'] = objects
collections = {}
for nested_layer_collection in linkdata_iter(layer_collection, b'layer_collections'):
subname, subdata = get_layer_collection(nested_layer_collection)
collections[subname] = subdata
data['collections'] = collections
return name, data
def get_layer(layer):
data = {}
name = layer.get(b'name')
data['name'] = name
data['active_object'] = layer.get((b'basact', b'object', b'id', b'name'))[2:]
data['engine'] = layer.get(b'engine')
objects = []
for link in linkdata_iter(layer, b'object_bases'):
ob = link.get_pointer(b'object')
objects.append(ob.get((b'id', b'name'))[2:])
data['objects'] = objects
collections = {}
for layer_collection in linkdata_iter(layer, b'layer_collections'):
subname, subdata = get_layer_collection(layer_collection)
collections[subname] = subdata
data['collections'] = collections
return name, data
def get_layers(scene):
"""Return all the render layers and their data"""
layers = {}
for layer in linkdata_iter(scene, b'render_layers'):
name, data = get_layer(layer)
layers[name] = data
return layers
def get_scene_collection_objects(collection, listbase):
objects = []
for link in linkdata_iter(collection, listbase):
ob = link.get_pointer(b'data')
if ob is None:
name = 'Fail!'
else:
name = ob.get((b'id', b'name'))[2:]
objects.append(name)
return objects
def get_scene_collection(collection):
""""""
data = {}
name = collection.get(b'name')
data['name'] = name
data['filter'] = collection.get(b'filter')
data['objects'] = get_scene_collection_objects(collection, b'objects')
data['filter_objects'] = get_scene_collection_objects(collection, b'filter_objects')
collections = {}
for nested_collection in linkdata_iter(collection, b'scene_collections'):
subname, subdata = get_scene_collection(nested_collection)
collections[subname] = subdata
data['collections'] = collections
return name, data
def get_scene_collections(scene):
"""Return all the scene collections ahd their data"""
master_collection = scene.get_pointer(b'collection')
return get_scene_collection(master_collection)
def query_scene(filepath, name, callbacks):
"""Return the equivalent to bpy.context.scene"""
import blendfile
with blendfile.open_blend(filepath) as blend:
scenes = [block for block in blend.blocks if block.code == b'SC']
for scene in scenes:
if scene.get((b'id', b'name'))[2:] == name:
output = []
for callback in callbacks:
output.append(callback(scene))
return output
# ############################################################
# Utils
# ############################################################
def import_blendfile():
import bpy
import os, sys
path = os.path.join(
bpy.utils.resource_path('LOCAL'),
'scripts',
'addons',
'io_blend_utils',
'blend',
)
if path not in sys.path:
sys.path.append(path)
def dump(data):
import json
return json.dumps(
data,
sort_keys=True,
indent=4,
separators=(',', ': '),
)
# ############################################################
# Tests
# ############################################################
class UnitsTesting(unittest.TestCase):
def path_exists(self, filepath):
import os
self.assertTrue(
os.path.exists(filepath),
"Test file \"{0}\" not found".format(filepath))
def test_parsing(self):
"""Test if the arguments are properly set, and store ROOT"""
arguments = {}
for argument in extra_arguments:
name, value = argument.split('=')
self.assertTrue(name and name.startswith("--"), "Invalid argument \"{0}\"".format(argument))
self.assertTrue(value, "Invalid argument \"{0}\"".format(argument))
arguments[name[2:]] = value.strip('"')
global ROOT
ROOT = arguments.get('testdir')
self.assertTrue(ROOT, "Testdir not set")
def test_import_blendfile(self):
"""Make sure blendfile imports with no problems"""
import_blendfile()
import blendfile
def test_scene_doversion(self):
"""See if the doversion, writing and reading is working well"""
import bpy
import os
import tempfile
import filecmp
with tempfile.TemporaryDirectory() as dirpath:
filepath_layers = os.path.join(ROOT, 'layers.blend')
filepath_layers_json = os.path.join(ROOT, 'layers.json')
(self.path_exists(f) for f in (filepath_layers, filepath_layers_json))
# doversion + write test
bpy.ops.wm.open_mainfile('EXEC_DEFAULT', filepath=filepath_layers)
filepath_doversion = os.path.join(dirpath, 'doversion.blend')
bpy.ops.wm.save_mainfile('EXEC_DEFAULT', filepath=filepath_doversion)
data = query_scene(filepath_doversion, 'Main', (get_scene_collections, get_layers))
self.assertTrue(data, "Data is not valid")
collections, layers = data
filepath_doversion_json = os.path.join(dirpath, "doversion.json")
with open(filepath_doversion_json, "w") as f:
f.write(dump(collections))
f.write(dump(layers))
self.assertTrue(filecmp.cmp(
filepath_doversion_json,
filepath_layers_json),
"Doversion test failed")
# read test
bpy.ops.wm.open_mainfile('EXEC_DEFAULT', filepath=filepath_doversion)
filepath_saved = os.path.join(dirpath, 'doversion_saved.blend')
bpy.ops.wm.save_mainfile('EXEC_DEFAULT', filepath=filepath_saved)
data = query_scene(filepath_saved, 'Main', (get_scene_collections, get_layers))
self.assertTrue(data, "Data is not valid")
collections, layers = data
filepath_read_json = os.path.join(dirpath, "read.json")
with open(filepath_read_json, "w") as f:
f.write(dump(collections))
f.write(dump(layers))
self.assertTrue(filecmp.cmp(
filepath_read_json,
filepath_layers_json),
"Read test failed")
# ############################################################
# Main
# ############################################################
if __name__ == '__main__':
import sys
global extra_arguments
extra_arguments = sys.argv[sys.argv.index("--") + 1:] if "--" in sys.argv else []
sys.argv = [__file__] + (sys.argv[sys.argv.index("--") + 2:] if "--" in sys.argv else [])
unittest.main()
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