Merge pull request #1214 from assimp/issue_1211
closes https://github.com/assimp/assimp/issues/1211: defensice handlingpull/1217/head
Kim Kulling
GitHub
commit
63485bdd26
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@ -70,7 +70,7 @@ def make_tuple(ai_obj, type = None):
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def _init_face(aiFace):
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aiFace.indices = [aiFace.mIndices[i] for i in range(aiFace.mNumIndices)]
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assimp_struct_inits = { structs.Face : _init_face }
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def call_init(obj, caller = None):
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if helper.hasattr_silent(obj,'contents'): #pointer
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_init(obj.contents, obj, caller)
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@ -85,12 +85,12 @@ def _is_init_type(obj):
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# so it breaks the 'is iterable' check.
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# Basically:
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# FIXME!
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elif not bool(obj):
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elif not bool(obj):
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return False
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tname = obj.__class__.__name__
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return not (tname[:2] == 'c_' or tname == 'Structure' \
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or tname == 'POINTER') and not isinstance(obj,int)
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def _init(self, target = None, parent = None):
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"""
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Custom initialize() for C structs, adds safely accessible member functionality.
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@ -100,8 +100,8 @@ def _init(self, target = None, parent = None):
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"""
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if not target:
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target = self
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dirself = dir(self)
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dirself = dir(self)
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for m in dirself:
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if m.startswith("_"):
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@ -119,11 +119,12 @@ def _init(self, target = None, parent = None):
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if m == 'mName':
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obj = self.mName
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target.name = str(obj.data.decode("utf-8"))
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uni = unicode(obj.data, errors='ignore')
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target.name = str( uni )
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target.__class__.__repr__ = lambda x: str(x.__class__) + "(" + x.name + ")"
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target.__class__.__str__ = lambda x: x.name
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continue
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name = m[1:].lower()
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obj = getattr(self, m)
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@ -144,7 +145,7 @@ def _init(self, target = None, parent = None):
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if helper.hasattr_silent(self, 'mNum' + m[1:]):
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length = getattr(self, 'mNum' + m[1:])
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# -> special case: properties are
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# stored as a dict.
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if m == 'mProperties':
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@ -156,7 +157,7 @@ def _init(self, target = None, parent = None):
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setattr(target, name, [])
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logger.debug(str(self) + ": " + name + " is an empty list.")
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continue
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try:
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if obj._type_ in structs.assimp_structs_as_tuple:
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@ -166,7 +167,7 @@ def _init(self, target = None, parent = None):
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logger.debug(str(self) + ": Added an array of numpy arrays (type "+ str(type(obj)) + ") as self." + name)
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else:
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setattr(target, name, [make_tuple(obj[i]) for i in range(length)])
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logger.debug(str(self) + ": Added a list of lists (type "+ str(type(obj)) + ") as self." + name)
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else:
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@ -191,7 +192,7 @@ def _init(self, target = None, parent = None):
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sys.exit(1)
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except ValueError as e:
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logger.error("In " + str(self) + "->" + name + ": " + str(e) + ". Quitting now.")
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if "setting an array element with a sequence" in str(e):
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logger.error("Note that pyassimp does not currently "
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@ -200,13 +201,13 @@ def _init(self, target = None, parent = None):
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" a post-processing to triangulate your"
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" faces.")
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raise e
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else: # starts with 'm' but not iterable
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setattr(target, name, obj)
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logger.debug("Added " + name + " as self." + name + " (type: " + str(type(obj)) + ")")
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if _is_init_type(obj):
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call_init(obj, target)
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@ -265,34 +266,34 @@ def recur_pythonize(node, scene):
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for c in node.children:
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recur_pythonize(c, scene)
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def load(filename,
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def load(filename,
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file_type = None,
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processing = postprocess.aiProcess_Triangulate):
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'''
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Load a model into a scene. On failure throws AssimpError.
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Arguments
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---------
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filename: Either a filename or a file object to load model from.
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If a file object is passed, file_type MUST be specified
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Otherwise Assimp has no idea which importer to use.
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This is named 'filename' so as to not break legacy code.
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This is named 'filename' so as to not break legacy code.
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processing: assimp postprocessing parameters. Verbose keywords are imported
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from postprocessing, and the parameters can be combined bitwise to
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generate the final processing value. Note that the default value will
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triangulate quad faces. Example of generating other possible values:
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processing = (pyassimp.postprocess.aiProcess_Triangulate |
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processing = (pyassimp.postprocess.aiProcess_Triangulate |
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pyassimp.postprocess.aiProcess_OptimizeMeshes)
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file_type: string of file extension, such as 'stl'
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Returns
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---------
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Scene object with model data
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'''
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if hasattr(filename, 'read'):
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'''
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This is the case where a file object has been passed to load.
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This is the case where a file object has been passed to load.
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It is calling the following function:
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const aiScene* aiImportFileFromMemory(const char* pBuffer,
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unsigned int pLength,
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@ -302,14 +303,14 @@ def load(filename,
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if file_type == None:
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raise AssimpError('File type must be specified when passing file objects!')
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data = filename.read()
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model = _assimp_lib.load_mem(data,
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len(data),
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processing,
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model = _assimp_lib.load_mem(data,
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len(data),
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processing,
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file_type)
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else:
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# a filename string has been passed
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model = _assimp_lib.load(filename.encode("ascii"), processing)
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if not model:
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raise AssimpError('Could not import file!')
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scene = _init(model.contents)
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@ -317,22 +318,22 @@ def load(filename,
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return scene
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def export(scene,
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filename,
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filename,
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file_type = None,
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processing = postprocess.aiProcess_Triangulate):
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'''
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Export a scene. On failure throws AssimpError.
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Arguments
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---------
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scene: scene to export.
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filename: Filename that the scene should be exported to.
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filename: Filename that the scene should be exported to.
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file_type: string of file exporter to use. For example "collada".
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processing: assimp postprocessing parameters. Verbose keywords are imported
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from postprocessing, and the parameters can be combined bitwise to
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generate the final processing value. Note that the default value will
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triangulate quad faces. Example of generating other possible values:
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processing = (pyassimp.postprocess.aiProcess_Triangulate |
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processing = (pyassimp.postprocess.aiProcess_Triangulate |
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pyassimp.postprocess.aiProcess_OptimizeMeshes)
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'''
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@ -400,7 +401,7 @@ def _finalize_mesh(mesh, target):
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fillarray("mColors")
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fillarray("mTextureCoords")
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# prepare faces
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if numpy:
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faces = numpy.array([f.indices for f in target.faces], dtype=numpy.int32)
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@ -429,7 +430,7 @@ class PropertyGetter(dict):
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yield k[0], v
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def _get_properties(properties, length):
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def _get_properties(properties, length):
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"""
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Convenience Function to get the material properties as a dict
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and values in a python format.
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@ -439,7 +440,8 @@ def _get_properties(properties, length):
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for p in [properties[i] for i in range(length)]:
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#the name
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p = p.contents
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key = (str(p.mKey.data.decode("utf-8")).split('.')[1], p.mSemantic)
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uni = unicode(p.mKey.data, errors='ignore')
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key = (str(uni).split('.')[1], p.mSemantic)
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#the data
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from ctypes import POINTER, cast, c_int, c_float, sizeof
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@ -447,7 +449,9 @@ def _get_properties(properties, length):
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arr = cast(p.mData, POINTER(c_float * int(p.mDataLength/sizeof(c_float)) )).contents
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value = [x for x in arr]
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elif p.mType == 3: #string can't be an array
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value = cast(p.mData, POINTER(structs.MaterialPropertyString)).contents.data.decode("utf-8")
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uni = unicode(cast(p.mData, POINTER(structs.MaterialPropertyString)).contents.data, errors='ignore')
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value = uni
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elif p.mType == 4:
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arr = cast(p.mData, POINTER(c_int * int(p.mDataLength/sizeof(c_int)) )).contents
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value = [x for x in arr]
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@ -464,11 +468,11 @@ def _get_properties(properties, length):
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def decompose_matrix(matrix):
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if not isinstance(matrix, structs.Matrix4x4):
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raise AssimpError("pyassimp.decompose_matrix failed: Not a Matrix4x4!")
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scaling = structs.Vector3D()
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rotation = structs.Quaternion()
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position = structs.Vector3D()
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from ctypes import byref, pointer
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_assimp_lib.dll.aiDecomposeMatrix(pointer(matrix), byref(scaling), byref(rotation), byref(position))
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return scaling._init(), rotation._init(), position._init()
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