# Copyright (c) 2024 UltiMaker # Cura is released under the terms of the LGPLv3 or higher. import uuid import os import numpy from string import Formatter from enum import IntEnum import time from typing import Any, cast, Dict, List, Optional, Set, Tuple import re import pyArcus as Arcus # For typing. from PyQt6.QtCore import QCoreApplication from UM.Job import Job from UM.Logger import Logger from UM.Scene.SceneNode import SceneNode from UM.Settings.ContainerStack import ContainerStack #For typing. from UM.Settings.InstanceContainer import InstanceContainer from UM.Settings.Interfaces import ContainerInterface from UM.Settings.SettingDefinition import SettingDefinition from UM.Settings.SettingRelation import SettingRelation #For typing. from UM.Scene.Iterator.DepthFirstIterator import DepthFirstIterator from UM.Scene.Scene import Scene #For typing. from UM.Settings.Validator import ValidatorState from UM.Settings.SettingRelation import RelationType from UM.Settings.SettingFunction import SettingFunction from cura.CuraApplication import CuraApplication from cura.Scene.CuraSceneNode import CuraSceneNode from cura.OneAtATimeIterator import OneAtATimeIterator from cura.Settings.ExtruderManager import ExtruderManager from cura.CuraVersion import CuraVersion NON_PRINTING_MESH_SETTINGS = ["anti_overhang_mesh", "infill_mesh", "cutting_mesh"] class StartJobResult(IntEnum): Finished = 1 Error = 2 SettingError = 3 NothingToSlice = 4 MaterialIncompatible = 5 BuildPlateError = 6 ObjectSettingError = 7 #When an error occurs in per-object settings. ObjectsWithDisabledExtruder = 8 class GcodeConditionState(IntEnum): OutsideCondition = 1 ConditionFalse = 2 ConditionTrue = 3 ConditionDone = 4 class GcodeInstruction(IntEnum): Skip = 1 Evaluate = 2 EvaluateAndWrite = 3 class GcodeStartEndFormatter: # Formatter class that handles token expansion in start/end gcode # Example of a start/end gcode string: # ``` # M104 S{material_print_temperature_layer_0, 0} ;pre-heat # M140 S{material_bed_temperature_layer_0} ;heat bed # M204 P{acceleration_print, 0} T{acceleration_travel, 0} # M205 X{jerk_print, 0} # ``` # Any expression between curly braces will be evaluated and replaced with the result, using the # context of the provided default extruder. If no default extruder is provided, the global stack # will be used. Alternatively, if the expression is formatted as "{[expression], [extruder_nr]}", # then the expression will be evaluated with the extruder stack of the specified extruder_nr. _instruction_regex = re.compile(r"{(?Pif|else|elif|endif)?\s*(?P.*?)\s*(?:,\s*(?P.*))?\s*}(?P\n?)") def __init__(self, all_extruder_settings: Dict[str, Dict[str, Any]], default_extruder_nr: int = -1) -> None: super().__init__() self._all_extruder_settings: Dict[str, Dict[str, Any]] = all_extruder_settings self._default_extruder_nr: int = default_extruder_nr self._cura_application = CuraApplication.getInstance() self._extruder_manager = ExtruderManager.getInstance() def format(self, text: str) -> str: remaining_text: str = text result: str = "" self._condition_state: GcodeConditionState = GcodeConditionState.OutsideCondition while len(remaining_text) > 0: next_code_match = self._instruction_regex.search(remaining_text) if next_code_match is not None: expression_start, expression_end = next_code_match.span() if expression_start > 0: result += self._process_statement(remaining_text[:expression_start]) result += self._process_code(next_code_match) remaining_text = remaining_text[expression_end:] else: result += self._process_statement(remaining_text) remaining_text = "" return result def _process_statement(self, statement: str) -> str: if self._condition_state in [GcodeConditionState.OutsideCondition, GcodeConditionState.ConditionTrue]: return statement else: return "" def _process_code(self, code: re.Match) -> str: condition: Optional[str] = code.group("condition") expression: Optional[str] = code.group("expression") extruder_nr_expr: Optional[str] = code.group("extruder_nr_expr") end_of_line: Optional[str] = code.group("end_of_line") # The following variables are not settings, but only become available after slicing. # when these variables are encountered, we return them as-is. They are replaced later # when the actual values are known. post_slice_data_variables = ["filament_cost", "print_time", "filament_amount", "filament_weight", "jobname"] if expression in post_slice_data_variables: return f"{{{expression}}}" extruder_nr: str = str(self._default_extruder_nr) instruction: GcodeInstruction = GcodeInstruction.Skip # The settings may specify a specific extruder to use. This is done by # formatting the expression as "{expression}, {extruder_nr_expr}". If the # expression is formatted like this, we extract the extruder_nr and use # it to get the value from the correct extruder stack. if condition is None: # This is a classic statement if self._condition_state in [GcodeConditionState.OutsideCondition, GcodeConditionState.ConditionTrue]: # Skip and move to next instruction = GcodeInstruction.EvaluateAndWrite else: # This is a condition statement, first check validity if condition == "if": if self._condition_state != GcodeConditionState.OutsideCondition: raise SyntaxError("Nested conditions are not supported") else: if self._condition_state == GcodeConditionState.OutsideCondition: raise SyntaxError("Condition should start with an 'if' statement") if condition == "if": # First instruction, just evaluate it instruction = GcodeInstruction.Evaluate else: if self._condition_state == GcodeConditionState.ConditionTrue: # We have reached the next condition after a valid one has been found, skip the rest self._condition_state = GcodeConditionState.ConditionDone if condition == "elif": if self._condition_state == GcodeConditionState.ConditionFalse: # New instruction, and valid condition has not been reached so far => evaluate it instruction = GcodeInstruction.Evaluate else: # New instruction, but valid condition has already been reached => skip it instruction = GcodeInstruction.Skip elif condition == "else": instruction = GcodeInstruction.Skip # Never evaluate, expression should be empty if self._condition_state == GcodeConditionState.ConditionFalse: # Fallback instruction, and valid condition has not been reached so far => active next self._condition_state = GcodeConditionState.ConditionTrue elif condition == "endif": instruction = GcodeInstruction.Skip # Never evaluate, expression should be empty self._condition_state = GcodeConditionState.OutsideCondition if instruction >= GcodeInstruction.Evaluate and extruder_nr_expr is not None: extruder_nr_function = SettingFunction(extruder_nr_expr) container_stack = self._cura_application.getGlobalContainerStack() # We add the variables contained in `_all_extruder_settings["-1"]`, which is a dict-representation of the # global container stack, with additional properties such as `initial_extruder_nr`. As users may enter such # expressions we can't use the global container stack. The variables contained in the global container stack # will then be inserted twice, which is not optimal but works well. extruder_nr = str(extruder_nr_function(container_stack, additional_variables=self._all_extruder_settings["-1"])) if instruction >= GcodeInstruction.Evaluate: if extruder_nr in self._all_extruder_settings: additional_variables = self._all_extruder_settings[extruder_nr].copy() else: Logger.warning(f"Extruder {extruder_nr} does not exist, using global settings") additional_variables = self._all_extruder_settings["-1"].copy() if extruder_nr == "-1": container_stack = self._cura_application.getGlobalContainerStack() else: container_stack = self._extruder_manager.getExtruderStack(extruder_nr) if not container_stack: Logger.warning(f"Extruder {extruder_nr} does not exist, using global settings") container_stack = self._cura_application.getGlobalContainerStack() setting_function = SettingFunction(expression) value = setting_function(container_stack, additional_variables=additional_variables) if instruction == GcodeInstruction.Evaluate: if value: self._condition_state = GcodeConditionState.ConditionTrue else: self._condition_state = GcodeConditionState.ConditionFalse return "" else: value_str = str(value) if end_of_line is not None: # If we are evaluating an expression that is not a condition, restore the end of line value_str += end_of_line return value_str else: return "" class StartSliceJob(Job): """Job class that builds up the message of scene data to send to CuraEngine.""" def __init__(self, slice_message: Arcus.PythonMessage) -> None: super().__init__() self._scene: Scene = CuraApplication.getInstance().getController().getScene() self._slice_message: Arcus.PythonMessage = slice_message self._is_cancelled: bool = False self._build_plate_number: Optional[int] = None self._associated_disabled_extruders: Optional[str] = None # cache for all setting values from all stacks (global & extruder) for the current machine self._all_extruders_settings: Optional[Dict[str, Any]] = None def getSliceMessage(self) -> Arcus.PythonMessage: return self._slice_message def getAssociatedDisabledExtruders(self) -> Optional[str]: return self._associated_disabled_extruders def setBuildPlate(self, build_plate_number: int) -> None: self._build_plate_number = build_plate_number def _checkStackForErrors(self, stack: ContainerStack) -> bool: """Check if a stack has any errors.""" """returns true if it has errors, false otherwise.""" top_of_stack = cast(InstanceContainer, stack.getTop()) # Cache for efficiency. changed_setting_keys = top_of_stack.getAllKeys() # Add all relations to changed settings as well. for key in top_of_stack.getAllKeys(): instance = top_of_stack.getInstance(key) if instance is None: continue self._addRelations(changed_setting_keys, instance.definition.relations) Job.yieldThread() for changed_setting_key in changed_setting_keys: if not stack.getProperty(changed_setting_key, "enabled"): continue validation_state = stack.getProperty(changed_setting_key, "validationState") if validation_state is None: definition = cast(SettingDefinition, stack.getSettingDefinition(changed_setting_key)) validator_type = SettingDefinition.getValidatorForType(definition.type) if validator_type: validator = validator_type(changed_setting_key) validation_state = validator(stack) if validation_state in ( ValidatorState.Exception, ValidatorState.MaximumError, ValidatorState.MinimumError, ValidatorState.Invalid): Logger.log("w", "Setting %s is not valid, but %s. Aborting slicing.", changed_setting_key, validation_state) return True Job.yieldThread() return False def run(self) -> None: """Runs the job that initiates the slicing.""" if self._build_plate_number is None: self.setResult(StartJobResult.Error) return stack = CuraApplication.getInstance().getGlobalContainerStack() if not stack: self.setResult(StartJobResult.Error) return # Don't slice if there is a setting with an error value. if CuraApplication.getInstance().getMachineManager().stacksHaveErrors: self.setResult(StartJobResult.SettingError) return if CuraApplication.getInstance().getBuildVolume().hasErrors(): self.setResult(StartJobResult.BuildPlateError) return # Wait for error checker to be done. while CuraApplication.getInstance().getMachineErrorChecker().needToWaitForResult: time.sleep(0.1) if CuraApplication.getInstance().getMachineErrorChecker().hasError: self.setResult(StartJobResult.SettingError) return # Don't slice if the buildplate or the nozzle type is incompatible with the materials if not CuraApplication.getInstance().getMachineManager().variantBuildplateCompatible and \ not CuraApplication.getInstance().getMachineManager().variantBuildplateUsable: self.setResult(StartJobResult.MaterialIncompatible) return for extruder_stack in stack.extruderList: material = extruder_stack.findContainer({"type": "material"}) if not extruder_stack.isEnabled: continue if material: if material.getMetaDataEntry("compatible") == False: self.setResult(StartJobResult.MaterialIncompatible) return # Don't slice if there is a per object setting with an error value. for node in DepthFirstIterator(self._scene.getRoot()): if not isinstance(node, CuraSceneNode) or not node.isSelectable(): continue if self._checkStackForErrors(node.callDecoration("getStack")): self.setResult(StartJobResult.ObjectSettingError) return # Remove old layer data. for node in DepthFirstIterator(self._scene.getRoot()): if node.callDecoration("getLayerData") and node.callDecoration("getBuildPlateNumber") == self._build_plate_number: # Since we walk through all nodes in the scene, they always have a parent. cast(SceneNode, node.getParent()).removeChild(node) break # Get the objects in their groups to print. object_groups = [] if stack.getProperty("print_sequence", "value") == "one_at_a_time": modifier_mesh_nodes = [] for node in DepthFirstIterator(self._scene.getRoot()): build_plate_number = node.callDecoration("getBuildPlateNumber") if node.callDecoration("isNonPrintingMesh") and build_plate_number == self._build_plate_number: modifier_mesh_nodes.append(node) for node in OneAtATimeIterator(self._scene.getRoot()): temp_list = [] # Filter on current build plate build_plate_number = node.callDecoration("getBuildPlateNumber") if build_plate_number is not None and build_plate_number != self._build_plate_number: continue children = node.getAllChildren() children.append(node) for child_node in children: mesh_data = child_node.getMeshData() if mesh_data and mesh_data.getVertices() is not None: temp_list.append(child_node) if temp_list: object_groups.append(temp_list + modifier_mesh_nodes) Job.yieldThread() if len(object_groups) == 0: Logger.log("w", "No objects suitable for one at a time found, or no correct order found") else: temp_list = [] has_printing_mesh = False for node in DepthFirstIterator(self._scene.getRoot()): mesh_data = node.getMeshData() if node.callDecoration("isSliceable") and mesh_data and mesh_data.getVertices() is not None: is_non_printing_mesh = bool(node.callDecoration("isNonPrintingMesh")) # Find a reason not to add the node if node.callDecoration("getBuildPlateNumber") != self._build_plate_number: continue if getattr(node, "_outside_buildarea", False) and not is_non_printing_mesh: continue temp_list.append(node) if not is_non_printing_mesh: has_printing_mesh = True Job.yieldThread() # If the list doesn't have any model with suitable settings then clean the list # otherwise CuraEngine will crash if not has_printing_mesh: temp_list.clear() if temp_list: object_groups.append(temp_list) global_stack = CuraApplication.getInstance().getGlobalContainerStack() if not global_stack: return extruders_enabled = [stack.isEnabled for stack in global_stack.extruderList] filtered_object_groups = [] has_model_with_disabled_extruders = False associated_disabled_extruders = set() for group in object_groups: stack = global_stack skip_group = False for node in group: # Only check if the printing extruder is enabled for printing meshes is_non_printing_mesh = node.callDecoration("evaluateIsNonPrintingMesh") extruder_position = int(node.callDecoration("getActiveExtruderPosition")) if not is_non_printing_mesh and not extruders_enabled[extruder_position]: skip_group = True has_model_with_disabled_extruders = True associated_disabled_extruders.add(extruder_position) if not skip_group: filtered_object_groups.append(group) if has_model_with_disabled_extruders: self.setResult(StartJobResult.ObjectsWithDisabledExtruder) associated_disabled_extruders = {p + 1 for p in associated_disabled_extruders} self._associated_disabled_extruders = ", ".join(map(str, sorted(associated_disabled_extruders))) return # There are cases when there is nothing to slice. This can happen due to one at a time slicing not being # able to find a possible sequence or because there are no objects on the build plate (or they are outside # the build volume) if not filtered_object_groups: self.setResult(StartJobResult.NothingToSlice) return self._buildGlobalSettingsMessage(stack) self._buildGlobalInheritsStackMessage(stack) user_id = uuid.getnode() # On all of Cura's supported platforms, this returns the MAC address which is pseudonymical information (!= anonymous). user_id %= 2 ** 16 # So to make it anonymous, apply a bitmask selecting only the last 16 bits. This prevents it from being traceable to a specific user but still gives somewhat of an idea of whether it's just the same user hitting the same crash over and over again, or if it's widespread. self._slice_message.sentry_id = f"{user_id}" self._slice_message.cura_version = CuraVersion # Add the project name to the message if the user allows for non-anonymous crash data collection. account = CuraApplication.getInstance().getCuraAPI().account if account and account.isLoggedIn and not CuraApplication.getInstance().getPreferences().getValue("info/anonymous_engine_crash_report"): self._slice_message.project_name = CuraApplication.getInstance().getPrintInformation().baseName self._slice_message.user_name = account.userName # Build messages for extruder stacks for extruder_stack in global_stack.extruderList: self._buildExtruderMessage(extruder_stack) backend_plugins = CuraApplication.getInstance().getBackendPlugins() # Sort backend plugins by name. Not a very good strategy, but at least it is repeatable. This will be improved later. backend_plugins = sorted(backend_plugins, key=lambda backend_plugin: backend_plugin.getId()) for plugin in backend_plugins: if not plugin.usePlugin(): continue for slot in plugin.getSupportedSlots(): # Right now we just send the message for every slot that we support. A single plugin can support # multiple slots # In the future the frontend will need to decide what slots that a plugin actually supports should # also be used. For instance, if you have two plugins and each of them support a_generate and b_generate # only one of each can actually be used (eg; plugin 1 does both, plugin 1 does a_generate and 2 does # b_generate, etc). plugin_message = self._slice_message.addRepeatedMessage("engine_plugins") plugin_message.id = slot plugin_message.address = plugin.getAddress() plugin_message.port = plugin.getPort() plugin_message.plugin_name = plugin.getPluginId() plugin_message.plugin_version = plugin.getVersion() for group in filtered_object_groups: group_message = self._slice_message.addRepeatedMessage("object_lists") parent = group[0].getParent() if parent is not None and parent.callDecoration("isGroup"): self._handlePerObjectSettings(cast(CuraSceneNode, parent), group_message) for object in group: mesh_data = object.getMeshData() if mesh_data is None: continue rot_scale = object.getWorldTransformation().getTransposed().getData()[0:3, 0:3] translate = object.getWorldTransformation().getData()[:3, 3] # This effectively performs a limited form of MeshData.getTransformed that ignores normals. verts = mesh_data.getVertices() verts = verts.dot(rot_scale) verts += translate # Convert from Y up axes to Z up axes. Equals a 90 degree rotation. verts[:, [1, 2]] = verts[:, [2, 1]] verts[:, 1] *= -1 obj = group_message.addRepeatedMessage("objects") obj.id = id(object) obj.name = object.getName() indices = mesh_data.getIndices() if indices is not None: flat_verts = numpy.take(verts, indices.flatten(), axis=0) else: flat_verts = numpy.array(verts) obj.vertices = flat_verts self._handlePerObjectSettings(cast(CuraSceneNode, object), obj) Job.yieldThread() self.setResult(StartJobResult.Finished) def cancel(self) -> None: super().cancel() self._is_cancelled = True def isCancelled(self) -> bool: return self._is_cancelled def setIsCancelled(self, value: bool): self._is_cancelled = value def _buildReplacementTokens(self, stack: ContainerStack) -> Dict[str, Any]: """Creates a dictionary of tokens to replace in g-code pieces. This indicates what should be replaced in the start and end g-codes. :param stack: The stack to get the settings from to replace the tokens with. :return: A dictionary of replacement tokens to the values they should be replaced with. """ result = {} for key in stack.getAllKeys(): result[key] = stack.getProperty(key, "value") Job.yieldThread() # Material identification in addition to non-human-readable GUID result["material_id"] = stack.material.getMetaDataEntry("base_file", "") result["material_type"] = stack.material.getMetaDataEntry("material", "") result["material_name"] = stack.material.getMetaDataEntry("name", "") result["material_brand"] = stack.material.getMetaDataEntry("brand", "") result["quality_name"] = stack.quality.getMetaDataEntry("name", "") result["quality_changes_name"] = stack.qualityChanges.getMetaDataEntry("name") # Renamed settings. result["print_bed_temperature"] = result["material_bed_temperature"] result["print_temperature"] = result["material_print_temperature"] result["travel_speed"] = result["speed_travel"] #Some extra settings. result["time"] = time.strftime("%H:%M:%S") result["date"] = time.strftime("%d-%m-%Y") result["day"] = ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"][int(time.strftime("%w"))] result["initial_extruder_nr"] = CuraApplication.getInstance().getExtruderManager().getInitialExtruderNr() # If adding or changing a setting here, please update the associated wiki page # https://github.com/Ultimaker/Cura/wiki/Start-End-G%E2%80%90Code return result def _cacheAllExtruderSettings(self): global_stack = cast(ContainerStack, CuraApplication.getInstance().getGlobalContainerStack()) # NB: keys must be strings for the string formatter self._all_extruders_settings = { "-1": self._buildReplacementTokens(global_stack) } QCoreApplication.processEvents() # Ensure that the GUI does not freeze. for extruder_stack in ExtruderManager.getInstance().getActiveExtruderStacks(): extruder_nr = extruder_stack.getProperty("extruder_nr", "value") self._all_extruders_settings[str(extruder_nr)] = self._buildReplacementTokens(extruder_stack) QCoreApplication.processEvents() # Ensure that the GUI does not freeze. def _expandGcodeTokens(self, value: str, default_extruder_nr: int = -1) -> str: """Replace setting tokens in a piece of g-code. :param value: A piece of g-code to replace tokens in. :param default_extruder_nr: Stack nr to use when no stack nr is specified, defaults to the global stack """ if not self._all_extruders_settings: self._cacheAllExtruderSettings() try: # Get "replacement-keys" for the extruders. In the formatter the settings stack is used to get the # replacement values for the setting-keys. However, the values for `material_id`, `material_type`, # etc are not in the settings stack. fmt = GcodeStartEndFormatter(self._all_extruders_settings, default_extruder_nr=default_extruder_nr) return str(fmt.format(value)) except: Logger.logException("w", "Unable to do token replacement on start/end g-code") return str(value) def _buildExtruderMessage(self, stack: ContainerStack) -> None: """Create extruder message from stack""" message = self._slice_message.addRepeatedMessage("extruders") message.id = int(stack.getMetaDataEntry("position")) if not self._all_extruders_settings: self._cacheAllExtruderSettings() if self._all_extruders_settings is None: return extruder_nr = stack.getProperty("extruder_nr", "value") settings = self._all_extruders_settings[str(extruder_nr)].copy() # Also send the material GUID. This is a setting in fdmprinter, but we have no interface for it. settings["material_guid"] = stack.material.getMetaDataEntry("GUID", "") # Replace the setting tokens in start and end g-code. extruder_nr = stack.getProperty("extruder_nr", "value") settings["machine_extruder_start_code"] = self._expandGcodeTokens(settings["machine_extruder_start_code"], extruder_nr) settings["machine_extruder_end_code"] = self._expandGcodeTokens(settings["machine_extruder_end_code"], extruder_nr) global_definition = cast(ContainerInterface, cast(ContainerStack, stack.getNextStack()).getBottom()) own_definition = cast(ContainerInterface, stack.getBottom()) for key, value in settings.items(): # Do not send settings that are not settable_per_extruder. # Since these can only be set in definition files, we only have to ask there. if not global_definition.getProperty(key, "settable_per_extruder") and \ not own_definition.getProperty(key, "settable_per_extruder"): continue setting = message.getMessage("settings").addRepeatedMessage("settings") setting.name = key setting.value = str(value).encode("utf-8") Job.yieldThread() def _buildGlobalSettingsMessage(self, stack: ContainerStack) -> None: """Sends all global settings to the engine. The settings are taken from the global stack. This does not include any per-extruder settings or per-object settings. """ if not self._all_extruders_settings: self._cacheAllExtruderSettings() if self._all_extruders_settings is None: return settings = self._all_extruders_settings["-1"].copy() # Pre-compute material material_bed_temp_prepend and material_print_temp_prepend start_gcode = settings["machine_start_gcode"] # Remove all the comments from the start g-code start_gcode = re.sub(r";.+?(\n|$)", "\n", start_gcode) if settings["material_bed_temp_prepend"]: bed_temperature_settings = ["material_bed_temperature", "material_bed_temperature_layer_0"] pattern = r"\{(%s)(,\s?\w+)?\}" % "|".join(bed_temperature_settings) # match {setting} as well as {setting, extruder_nr} settings["material_bed_temp_prepend"] = re.search(pattern, start_gcode) == None if settings["material_print_temp_prepend"]: print_temperature_settings = ["material_print_temperature", "material_print_temperature_layer_0", "default_material_print_temperature", "material_initial_print_temperature", "material_final_print_temperature", "material_standby_temperature", "print_temperature"] pattern = r"\{(%s)(,\s?\w+)?\}" % "|".join(print_temperature_settings) # match {setting} as well as {setting, extruder_nr} settings["material_print_temp_prepend"] = re.search(pattern, start_gcode) is None # Replace the setting tokens in start and end g-code. # Use values from the first used extruder by default so we get the expected temperatures initial_extruder_nr = CuraApplication.getInstance().getExtruderManager().getInitialExtruderNr() settings["machine_start_gcode"] = self._expandGcodeTokens(settings["machine_start_gcode"], initial_extruder_nr) settings["machine_end_gcode"] = self._expandGcodeTokens(settings["machine_end_gcode"], initial_extruder_nr) # Manually add 'nozzle offsetting', since that is a metadata-entry instead for some reason. # NOTE: This probably needs to be an actual setting at some point. settings["nozzle_offsetting_for_disallowed_areas"] = CuraApplication.getInstance().getGlobalContainerStack().getMetaDataEntry("nozzle_offsetting_for_disallowed_areas", True) # Add all sub-messages for each individual setting. for key, value in settings.items(): setting_message = self._slice_message.getMessage("global_settings").addRepeatedMessage("settings") setting_message.name = key setting_message.value = str(value).encode("utf-8") Job.yieldThread() def _buildGlobalInheritsStackMessage(self, stack: ContainerStack) -> None: """Sends for some settings which extruder they should fallback to if not set. This is only set for settings that have the limit_to_extruder property. :param stack: The global stack with all settings, from which to read the limit_to_extruder property. """ for key in stack.getAllKeys(): extruder_position = int(round(float(stack.getProperty(key, "limit_to_extruder")))) if extruder_position >= 0: # Set to a specific extruder. setting_extruder = self._slice_message.addRepeatedMessage("limit_to_extruder") setting_extruder.name = key setting_extruder.extruder = extruder_position Job.yieldThread() def _handlePerObjectSettings(self, node: CuraSceneNode, message: Arcus.PythonMessage): """Check if a node has per object settings and ensure that they are set correctly in the message :param node: Node to check. :param message: object_lists message to put the per object settings in """ stack = node.callDecoration("getStack") # Check if the node has a stack attached to it and the stack has any settings in the top container. if not stack: return # Check all settings for relations, so we can also calculate the correct values for dependent settings. top_of_stack = stack.getTop() # Cache for efficiency. changed_setting_keys = top_of_stack.getAllKeys() # Add all relations to changed settings as well. for key in top_of_stack.getAllKeys(): instance = top_of_stack.getInstance(key) self._addRelations(changed_setting_keys, instance.definition.relations) Job.yieldThread() # Ensure that the engine is aware what the build extruder is. changed_setting_keys.add("extruder_nr") # Get values for all changed settings for key in changed_setting_keys: setting = message.addRepeatedMessage("settings") setting.name = key extruder = int(round(float(stack.getProperty(key, "limit_to_extruder")))) # Check if limited to a specific extruder, but not overridden by per-object settings. if extruder >= 0 and key not in changed_setting_keys: limited_stack = ExtruderManager.getInstance().getActiveExtruderStacks()[extruder] else: limited_stack = stack setting.value = str(limited_stack.getProperty(key, "value")).encode("utf-8") Job.yieldThread() def _addRelations(self, relations_set: Set[str], relations: List[SettingRelation]): """Recursive function to put all settings that require each other for value changes in a list :param relations_set: Set of keys of settings that are influenced :param relations: list of relation objects that need to be checked. """ for relation in filter(lambda r: r.role == "value" or r.role == "limit_to_extruder", relations): if relation.type == RelationType.RequiresTarget: continue relations_set.add(relation.target.key) self._addRelations(relations_set, relation.target.relations)