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Always return a MaterialNode from getDefaultMaterial

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Its function is, after all, to find the default. It should always have a default. Sometimes that will be the empty material, but so be it.

Contributes to issue CURA-6600.
This commit is contained in:
Ghostkeeper 2019-08-22 17:13:46 +02:00
parent 431c8f4900
commit 37bd7c6b0e
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1 changed files with 10 additions and 8 deletions
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18
cura/Machines/MaterialManager.py
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@ -226,12 +226,17 @@ class MaterialManager(QObject):
## Get default material for given global stack, extruder position and extruder nozzle name
# you can provide the extruder_definition and then the position is ignored (useful when building up global stack in CuraStackBuilder)
def getDefaultMaterial(self, global_stack: "GlobalStack", position: str, nozzle_name: Optional[str],
extruder_definition: Optional["DefinitionContainer"] = None) -> Optional["MaterialNode"]:
if not parseBool(global_stack.getMetaDataEntry("has_materials", False)):
return None
extruder_definition: Optional["DefinitionContainer"] = None) -> "MaterialNode":
definition_id = global_stack.definition.getId()
machine_node = ContainerTree.getInstance().machines[definition_id]
if nozzle_name in machine_node.variants:
nozzle_node = machine_node.variants[nozzle_name]
else:
Logger.log("w", "Could not find variant {nozzle_name} for machine with definition {definition_id} in the container tree".format(nozzle_name = nozzle_name, definition_id = definition_id))
nozzle_node = next(iter(machine_node.variants))
if not parseBool(global_stack.getMetaDataEntry("has_materials", False)):
return next(iter(nozzle_node.materials))
if extruder_definition is not None:
material_diameter = extruder_definition.getProperty("material_diameter", "value")
@ -239,10 +244,7 @@ class MaterialManager(QObject):
material_diameter = global_stack.extruders[position].getCompatibleMaterialDiameter()
approximate_material_diameter = round(material_diameter)
if nozzle_name not in machine_node.variants:
Logger.log("w", "Could not find variant {nozzle_name} for machine with definition {definition_id} in the container tree".format(nozzle_name = nozzle_name, definition_id = definition_id))
return None
return machine_node.variants[nozzle_name].preferredMaterial(approximate_material_diameter)
return nozzle_node.preferredMaterial(approximate_material_diameter)
def removeMaterialByRootId(self, root_material_id: str):
container_registry = CuraContainerRegistry.getInstance()