def __init__(self, file_path):
self.h_doc = TDocStd.Handle_TDocStd_Document()
self.app = XCAFApp.GetApplication().GetObject()
self.app.NewDocument(TCollection_ExtendedString("MDTV-XCAF"),
self.h_doc)
self.STEPReader = STEPCAFControl_Reader()
if not self.STEPReader.ReadFile(file_path.encode("utf-8")):
raise Exception("OpenCascade could not read STEP file")
self.STEPReader.Transfer(self.h_doc)
self.doc = self.h_doc.GetObject()
self.h_shape_tool = XCAFDoc.XCAFDoc_DocumentTool_ShapeTool(
self.doc.Main())
self.h_colors_tool = XCAFDoc.XCAFDoc_DocumentTool_ColorTool(
self.doc.Main())
self.shape_tool = self.h_shape_tool.GetObject()
self.color_tool = self.h_colors_tool.GetObject()
self.shapes = TDF_LabelSequence()
self.shape_tool.GetShapes(self.shapes)
roots = TDF_LabelSequence()
self.shape_tool.GetFreeShapes(roots)
ws = self.STEPReader.Reader().WS().GetObject()
model = ws.Model().GetObject()
model.Clear()
for i in range(1, 8):
ws.ClearData(i)
ws.ClearFile()
def read_step_file_shapes(filename):
_shapes = []
# create an handle to a document
h_doc = Handle_TDocStd_Document()
# Create the application
app = XCAFApp_Application.GetApplication().GetObject()
app.NewDocument(TCollection_ExtendedString("MDTV-CAF"), h_doc)
# Get root assembly
doc = h_doc.GetObject()
h_shape_tool = XCAFDoc_DocumentTool_ShapeTool(doc.Main())
step_reader = STEPCAFControl_Reader()
step_reader.SetNameMode(True)
status = step_reader.ReadFile(filename)
if status == IFSelect_RetDone:
step_reader.Transfer(doc.GetHandle())
labels = TDF_LabelSequence()
shape_tool = h_shape_tool.GetObject()
h_shape_tool.GetObject().GetFreeShapes(labels)
print("Number of shapes at root :%i" % labels.Length())
for i in range(labels.Length()):
label = labels.Value(i + 1)
a_shape = h_shape_tool.GetObject().GetShape(label)
_shapes.append(a_shape)
return _shapes
def test_read_step_file(self):
''' Reads the previous step file '''
# create an handle to a document
h_doc = Handle_TDocStd_Document()
# Create the application
app = XCAFApp_Application.GetApplication().GetObject()
app.NewDocument(TCollection_ExtendedString("MDTV-CAF"), h_doc)
# Get root assembly
doc = h_doc.GetObject()
h_shape_tool = XCAFDoc_DocumentTool_ShapeTool(doc.Main())
l_colors = XCAFDoc_DocumentTool_ColorTool(doc.Main())
step_reader = STEPCAFControl_Reader()
step_reader.SetColorMode(True)
step_reader.SetLayerMode(True)
step_reader.SetNameMode(True)
step_reader.SetMatMode(True)
status = step_reader.ReadFile("./test_io/test_ocaf.stp")
if status == IFSelect_RetDone:
step_reader.Transfer(doc.GetHandle())
labels = TDF_LabelSequence()
color_labels = TDF_LabelSequence()
shape_tool = h_shape_tool.GetObject()
h_shape_tool.GetObject().GetFreeShapes(labels)
assert (labels.Length() == 1)
sub_shapes_labels = TDF_LabelSequence()
assert (not shape_tool.IsAssembly(labels.Value(1)))
shape_tool.GetSubShapes(labels.Value(1), sub_shapes_labels)
assert (sub_shapes_labels.Length() == 0)
l_colors.GetObject().GetColors(color_labels)
assert (color_labels.Length() == 1)
label_shp = labels.Value(1)
a_shape = h_shape_tool.GetObject().GetShape(label_shp)
assert (not a_shape.IsNull())
# create an handle to a document
h_doc = Handle_TDocStd_Document()
# Create the application
app = XCAFApp_Application.GetApplication().GetObject()
app.NewDocument(TCollection_ExtendedString("MDTV-CAF"), h_doc)
# Get root assembly
doc = h_doc.GetObject()
h_shape_tool = XCAFDoc_DocumentTool_ShapeTool(doc.Main())
l_colors = XCAFDoc_DocumentTool_ColorTool(doc.Main())
l_layers = XCAFDoc_DocumentTool_LayerTool(doc.Main())
l_materials = XCAFDoc_DocumentTool_MaterialTool(doc.Main())
step_reader = STEPCAFControl_Reader()
step_reader.SetColorMode(True)
step_reader.SetLayerMode(True)
step_reader.SetNameMode(True)
step_reader.SetMatMode(True)
status = step_reader.ReadFile(filename)
if status == IFSelect_RetDone:
step_reader.Transfer(doc.GetHandle())
labels = TDF_LabelSequence()
color_labels = TDF_LabelSequence()
shape_tool = h_shape_tool.GetObject()
h_shape_tool.GetObject().GetFreeShapes(labels)
def __init__(self, file_path, id=None):
self.file = file_path.encode("utf-8")
self.id = id
self.shapes_simples = []
self.main_product = None
basename = os.path.basename(self.file)
self.fileName = os.path.splitext(basename)[0]
self.STEPReader = STEPCAFControl_Reader()
if self.STEPReader.ReadFile(self.file) != 1:
raise OCCReadingStepError
self.h_doc = TDocStd.Handle_TDocStd_Document()
self.app = XCAFApp.GetApplication().GetObject()
self.app.NewDocument(TCollection_ExtendedString("MDTV-XCAF"),
self.h_doc)
self.STEPReader.Transfer(self.h_doc)
self.doc = self.h_doc.GetObject()
self.h_shape_tool = XCAFDoc.XCAFDoc_DocumentTool_ShapeTool(
self.doc.Main())
self.h_colors_tool = XCAFDoc.XCAFDoc_DocumentTool_ColorTool(
self.doc.Main())
self.shape_tool = self.h_shape_tool.GetObject()
self.color_tool = self.h_colors_tool.GetObject()
self.shapes = TDF_LabelSequence()
self.shape_tool.GetShapes(self.shapes)
for i in range(self.shapes.Length()):
shape = self.shapes.Value(i + 1)
if self.shape_tool.IsSimpleShape(shape):
compShape = self.shape_tool.GetShape(shape)
t = Topo(compShape)
if t.number_of_vertices() > 0:
label = get_label_name(shape)
color = find_color(shape, self.color_tool, self.shape_tool)
self.shapes_simples.append(
SimpleShape(label, compShape, color))
roots = TDF_LabelSequence()
self.shape_tool.GetFreeShapes(roots)
self.thumbnail_valid = False
if roots.Length() == 1:
shape = self.shape_tool.GetShape(roots.Value(1))
t = Topo(shape)
if t.number_of_vertices() > 0:
bbox = Bnd_Box()
gap = 0
bbox.SetGap(gap)
BRepMesh_Mesh(shape, get_mesh_precision(shape, 1))
faces_iterator = Topo(shape).faces()
for F in faces_iterator:
face_location = TopLoc_Location()
BRep_Tool_Triangulation(F, face_location)
BRepBndLib_Add(shape, bbox)
x_min, y_min, z_min, x_max, y_max, z_max = bbox.Get()
diagonal = max(x_max - x_min, y_max - y_min, z_max - z_min)
if diagonal > 0:
self.scale = 200. / diagonal
self.trans = ((x_max - x_min) / 2. - x_max,
(y_max - y_min) / 2. - y_max,
(z_max - z_min) / 2. - z_max)
self.thumbnail_valid = True
ws = self.STEPReader.Reader().WS().GetObject()
model = ws.Model().GetObject()
model.Clear()
class StepImporter(object):
"""
:param file_path: Path of the file **.stp** to analyzing
:param id: For the generation of the :class:`.Product`, **id** is assigned like product.doc_id for every node of :class:`.Product`. For the generation of the files of geometry **.geo**, **id** , together with an index generated by the class, are used to identify the content of every file
Generates from a path of :class:`~django.core.files.File` **.stp**:
-A set of files **.geo** that represents the geometry of the different simple products that are useful to realize the visualization 3D across the web browser.
-A structure of information that represents the arborescencse of the different assemblies,represented in a :class:`.Product` . (Including his spatial location and orientation and his label of reference (:class:`.OCC.TDF.TDF_Label`))
This class is invoked from three different subprocesses related to the functionality of pythonOCC(generate3D.py , generateComposition.py , generateDecomposition.py).
"""
def __init__(self, file_path, id=None):
self.file = file_path.encode("utf-8")
self.id = id
self.shapes_simples = []
self.main_product = None
basename = os.path.basename(self.file)
self.fileName = os.path.splitext(basename)[0]
self.STEPReader = STEPCAFControl_Reader()
if self.STEPReader.ReadFile(self.file) != 1:
raise OCCReadingStepError
self.h_doc = TDocStd.Handle_TDocStd_Document()
self.app = XCAFApp.GetApplication().GetObject()
self.app.NewDocument(TCollection_ExtendedString("MDTV-XCAF"),
self.h_doc)
self.STEPReader.Transfer(self.h_doc)
self.doc = self.h_doc.GetObject()
self.h_shape_tool = XCAFDoc.XCAFDoc_DocumentTool_ShapeTool(
self.doc.Main())
self.h_colors_tool = XCAFDoc.XCAFDoc_DocumentTool_ColorTool(
self.doc.Main())
self.shape_tool = self.h_shape_tool.GetObject()
self.color_tool = self.h_colors_tool.GetObject()
self.shapes = TDF_LabelSequence()
self.shape_tool.GetShapes(self.shapes)
for i in range(self.shapes.Length()):
shape = self.shapes.Value(i + 1)
if self.shape_tool.IsSimpleShape(shape):
compShape = self.shape_tool.GetShape(shape)
t = Topo(compShape)
if t.number_of_vertices() > 0:
label = get_label_name(shape)
color = find_color(shape, self.color_tool, self.shape_tool)
self.shapes_simples.append(
SimpleShape(label, compShape, color))
roots = TDF_LabelSequence()
self.shape_tool.GetFreeShapes(roots)
self.thumbnail_valid = False
if roots.Length() == 1:
shape = self.shape_tool.GetShape(roots.Value(1))
t = Topo(shape)
if t.number_of_vertices() > 0:
bbox = Bnd_Box()
gap = 0
bbox.SetGap(gap)
BRepMesh_Mesh(shape, get_mesh_precision(shape, 1))
faces_iterator = Topo(shape).faces()
for F in faces_iterator:
face_location = TopLoc_Location()
BRep_Tool_Triangulation(F, face_location)
BRepBndLib_Add(shape, bbox)
x_min, y_min, z_min, x_max, y_max, z_max = bbox.Get()
diagonal = max(x_max - x_min, y_max - y_min, z_max - z_min)
if diagonal > 0:
self.scale = 200. / diagonal
self.trans = ((x_max - x_min) / 2. - x_max,
(y_max - y_min) / 2. - y_max,
(z_max - z_min) / 2. - z_max)
self.thumbnail_valid = True
ws = self.STEPReader.Reader().WS().GetObject()
model = ws.Model().GetObject()
model.Clear()
def compute_geometries(self, root_path, pov_dir):
"""
:param root_path: Path where to store the files **.geo** generated
When we generate a new :class:`.StepImporter` we will refill a list(**shapes_simples**) whit the :class:`.SimpleShape` contained in the file **.stp**
For each :class:`.SimpleShape` in the list **shapes_simples**:
We call the method :func:`.write_geometries` to generate a file **.geo** representative of its geometry,the content of the file is identified by the index+1 (>0) of the position of the :class:`.SimpleShape` in the list of **SimpleShapes** and by the attribue id of :class:`.StepImporter`
Returns the list of the path of the generated **.geo** files
"""
files_index = ""
self.povs = []
for index, shape in enumerate(self.shapes_simples):
name = get_available_name(root_path, self.fileName + ".geo")
path = os.path.join(root_path, name)
identifier = "_" + str(index + 1) + "_" + str(self.id)
writer = GeometryWriter(shape, 0.3)
pov_filename = os.path.join(pov_dir,
os.path.basename(path + ".inc"))
writer.write_geometries(identifier, path, pov_filename)
files_index += "GEO:" + name + " , " + str(index + 1) + "\n"
if writer.triangle_count:
self.povs.append((os.path.basename(name + ".inc"), identifier))
return files_index
def generate_product_arbre(self):
"""
Generates a :class:`.Product` relative to the assemblies of the file **.stp**, for every node of the :class:`.Product` it includes a label (:class:`.OCC.TDF.TDF_Label`) that represents and identifies the node , openPLM can only work whit a single root **.stp** files
"""
roots = TDF_LabelSequence()
self.shape_tool.GetFreeShapes(roots)
if roots.Length() != 1:
raise MultiRootError
deep = 0
product_id = [1]
root = roots.Value(1)
name = get_label_name(root)
self.main_product = Product(name, deep, root, self.id, product_id[0],
self.file)
product_id[0] += 1
expand_product(self.shape_tool, self.main_product, self.shapes_simples,
deep + 1, self.id, self.main_product, product_id,
self.file)
return self.main_product