def read_file(self):
"""Build tree = treelib.Tree() to facilitate displaying the CAD model and
constructing the tree view showing the assembly/component relationships.
Each node of self.tree contains the following:
(Name, UID, ParentUID, {Data}) where the Data keys are:
'a' (isAssy?), 'l' (TopLoc_Location), 'c' (Quantity_Color), 's' (TopoDS_Shape)
"""
logger.info("Reading STEP file")
tmodel = TreeModel("STEP")
self.shape_tool = tmodel.shape_tool
self.color_tool = tmodel.color_tool
step_reader = STEPCAFControl_Reader()
step_reader.SetColorMode(True)
step_reader.SetLayerMode(True)
step_reader.SetNameMode(True)
step_reader.SetMatMode(True)
status = step_reader.ReadFile(self.filename)
if status == IFSelect_RetDone:
logger.info("Transfer doc to STEPCAFControl_Reader")
step_reader.Transfer(tmodel.doc)
labels = TDF_LabelSequence()
self.shape_tool.GetShapes(labels)
logger.info('Number of labels at root : %i', labels.Length())
try:
rootlabel = labels.Value(1) # First label at root
except RuntimeError:
return
name = self.getName(rootlabel)
logger.info('Name of root label: %s', name)
isAssy = self.shape_tool.IsAssembly(rootlabel)
logger.info("First label at root holds an assembly? %s", isAssy)
if isAssy:
# If first label at root holds an assembly, it is the Top Assembly.
# Through this label, the entire assembly is accessible.
# there is no need to examine other labels at root explicitly.
topLoc = TopLoc_Location()
topLoc = self.shape_tool.GetLocation(rootlabel)
self.assyLocStack.append(topLoc)
entry = rootlabel.EntryDumpToString()
logger.debug("Entry: %s", entry)
logger.debug("Top assy name: %s", name)
# Create root node for top assy
newAssyUID = self.getNewUID()
self.tree.create_node(name, newAssyUID, None,
{'a': True, 'l': None, 'c': None, 's': None})
self.assyUidStack.append(newAssyUID)
topComps = TDF_LabelSequence() # Components of Top Assy
subchilds = False
isAssy = self.shape_tool.GetComponents(rootlabel, topComps, subchilds)
logger.debug("Is Assembly? %s", isAssy)
logger.debug("Number of components: %s", topComps.Length())
logger.debug("Is Reference? %s", self.shape_tool.IsReference(rootlabel))
if topComps.Length():
self.findComponents(rootlabel, topComps)
else:
# Labels at root can hold solids or compounds (which are 'crude' assemblies)
# Either way, we will need to create a root node in self.tree
newAssyUID = self.getNewUID()
self.tree.create_node(os.path.basename(self.filename),
newAssyUID, None,
{'a': True, 'l': None, 'c': None, 's': None})
self.assyUidStack = [newAssyUID]
for j in range(labels.Length()):
label = labels.Value(j+1)
name = self.getName(label)
isAssy = self.shape_tool.IsAssembly(label)
logger.debug("Label %i is assembly?: %s", j+1, isAssy)
shape = self.shape_tool.GetShape(label)
color = self.getColor(shape)
isSimpleShape = self.shape_tool.IsSimpleShape(label)
logger.debug("Is Simple Shape? %s", isSimpleShape)
shapeType = shape.ShapeType()
logger.debug("The shape type is: %i", shapeType)
if shapeType == 0:
logger.debug("The shape type is OCC.Core.TopAbs.TopAbs_COMPOUND")
topo = TopologyExplorer(shape)
#topo = aocutils.topology.Topo(shape)
logger.debug("Nb of compounds : %i", topo.number_of_compounds())
logger.debug("Nb of solids : %i", topo.number_of_solids())
logger.debug("Nb of shells : %i", topo.number_of_shells())
newAssyUID = self.getNewUID()
for i, solid in enumerate(topo.solids()):
name = "P%s" % str(i+1)
self.tree.create_node(name, self.getNewUID(),
self.assyUidStack[-1],
{'a': False, 'l': None,
'c': color, 's': solid})
elif shapeType == 2:
logger.debug("The shape type is OCC.Core.TopAbs.TopAbs_SOLID")
self.tree.create_node(name, self.getNewUID(),
self.assyUidStack[-1],
{'a': False, 'l': None,
'c': color, 's': shape})
elif shapeType == 3:
logger.debug("The shape type is OCC.Core.TopAbs.TopAbs_SHELL")
self.tree.create_node(name, self.getNewUID(),
self.assyUidStack[-1],
{'a': False, 'l': None,
'c': color, 's': shape})
return tmodel.doc # <class 'OCC.Core.TDocStd.TDocStd_Document'>
def read_file(self):
"""Build self.tree (treelib.Tree()) containing CAD data read from a step file.
Each node of self.tree contains the following:
(Name, UID, ParentUID, {Data}) where the Data keys are:
'a' (isAssy?), 'l' (TopLoc_Location), 'c' (Quantity_Color), 's' (TopoDS_Shape)
"""
logger.info("Reading STEP file")
doc = TDocStd_Document(TCollection_ExtendedString("STEP"))
# Create the application
app = XCAFApp_Application_GetApplication()
app.NewDocument(TCollection_ExtendedString("MDTV-CAF"), doc)
# Get root shapes
shape_tool = XCAFDoc_DocumentTool_ShapeTool(doc.Main())
shape_tool.SetAutoNaming(True)
self.color_tool = XCAFDoc_DocumentTool_ColorTool(doc.Main())
layer_tool = 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(self.filename)
if status == IFSelect_RetDone:
logger.info("Transfer doc to STEPCAFControl_Reader")
step_reader.Transfer(doc)
# Test round trip by writing doc back to another file.
logger.info("Doing a 'short-circuit' Round Trip test")
doctype = type(doc) # <class 'OCC.Core.TDocStd.TDocStd_Document'>
logger.info(f"Writing {doctype} back to another STEP file")
self.testRTStep(doc)
# Save doc to file (for educational purposes) (not working yet)
logger.debug("Saving doc to file")
savefilename = TCollection_ExtendedString('../doc.txt')
app.SaveAs(doc, savefilename)
labels = TDF_LabelSequence()
color_labels = TDF_LabelSequence()
shape_tool.GetShapes(labels)
self.shape_tool = shape_tool
logger.info('Number of labels at root : %i' % labels.Length())
try:
label = labels.Value(1) # First label at root
except RuntimeError:
return
name = self.getName(label)
logger.info('Name of root label: %s' % name)
isAssy = shape_tool.IsAssembly(label)
logger.info("First label at root holds an assembly? %s" % isAssy)
if isAssy:
# If first label at root holds an assembly, it is the Top Assembly.
# Through this label, the entire assembly is accessible.
# No need to examine other labels at root explicitly.
topLoc = TopLoc_Location()
topLoc = shape_tool.GetLocation(label)
self.assyLocStack.append(topLoc)
entry = label.EntryDumpToString()
logger.debug("Entry: %s" % entry)
logger.debug("Top assy name: %s" % name)
# Create root node for top assy
newAssyUID = self.getNewUID()
self.tree.create_node(name, newAssyUID, None, {
'a': True,
'l': None,
'c': None,
's': None
})
self.assyUidStack.append(newAssyUID)
topComps = TDF_LabelSequence() # Components of Top Assy
subchilds = False
isAssy = shape_tool.GetComponents(label, topComps, subchilds)
logger.debug("Is Assembly? %s" % isAssy)
logger.debug("Number of components: %s" % topComps.Length())
logger.debug("Is Reference? %s" % shape_tool.IsReference(label))
if topComps.Length():
self.findComponents(label, topComps)
else:
# Labels at root can hold solids or compounds (which are 'crude' assemblies)
# Either way, we will need to create a root node in self.tree
newAssyUID = self.getNewUID()
self.tree.create_node(os.path.basename(self.filename), newAssyUID,
None, {
'a': True,
'l': None,
'c': None,
's': None
})
self.assyUidStack = [newAssyUID]
for j in range(labels.Length()):
label = labels.Value(j + 1)
name = self.getName(label)
isAssy = shape_tool.IsAssembly(label)
logger.debug("Label %i is assembly?: %s" % (j + 1, isAssy))
shape = shape_tool.GetShape(label)
color = self.getColor(shape)
isSimpleShape = self.shape_tool.IsSimpleShape(label)
logger.debug("Is Simple Shape? %s" % isSimpleShape)
shapeType = shape.ShapeType()
logger.debug("The shape type is: %i" % shapeType)
if shapeType == 0:
logger.debug(
"The shape type is OCC.Core.TopAbs.TopAbs_COMPOUND")
topo = TopologyExplorer(shape)
#topo = aocutils.topology.Topo(shape)
logger.debug("Nb of compounds : %i" %
topo.number_of_compounds())
logger.debug("Nb of solids : %i" % topo.number_of_solids())
logger.debug("Nb of shells : %i" % topo.number_of_shells())
newAssyUID = self.getNewUID()
for i, solid in enumerate(topo.solids()):
name = "P%s" % str(i + 1)
self.tree.create_node(name, self.getNewUID(),
self.assyUidStack[-1], {
'a': False,
'l': None,
'c': color,
's': solid
})
elif shapeType == 2:
logger.debug(
"The shape type is OCC.Core.TopAbs.TopAbs_SOLID")
self.tree.create_node(name, self.getNewUID(),
self.assyUidStack[-1], {
'a': False,
'l': None,
'c': color,
's': shape
})
elif shapeType == 3:
logger.debug(
"The shape type is OCC.Core.TopAbs.TopAbs_SHELL")
self.tree.create_node(name, self.getNewUID(),
self.assyUidStack[-1], {
'a': False,
'l': None,
'c': color,
's': shape
})
return True
