# Copyright (c) 2021 Ultimaker B.V.
# Cura is released under the terms of the LGPLv3 or higher.
import sys
from PyQt6.QtCore import Qt
from PyQt6.QtGui import QOpenGLContext
from PyQt6.QtWidgets import QApplication
from UM.Application import Application
from UM.Event import Event, KeyEvent
from UM.Job import Job
from UM.Logger import Logger
from UM.Math.Color import Color
from UM.Math.Matrix import Matrix
from UM.Mesh.MeshBuilder import MeshBuilder
from UM.Message import Message
from UM.Platform import Platform
from UM.PluginRegistry import PluginRegistry
from UM.Qt.QtApplication import QtApplication
from UM.Resources import Resources
from UM.Scene.Iterator.DepthFirstIterator import DepthFirstIterator
from UM.Scene.Selection import Selection
from UM.Signal import Signal
from UM.View.CompositePass import CompositePass
from UM.View.GL.OpenGL import OpenGL
from UM.View.GL.OpenGLContext import OpenGLContext
from UM.View.GL.ShaderProgram import ShaderProgram
from UM.i18n import i18nCatalog
from cura.CuraView import CuraView
from cura.LayerPolygon import LayerPolygon # To distinguish line types.
from cura.Scene.ConvexHullNode import ConvexHullNode
from cura.CuraApplication import CuraApplication
from .NozzleNode import NozzleNode
from .SimulationPass import SimulationPass
from .SimulationViewProxy import SimulationViewProxy
import numpy
import os.path
from typing import Optional, TYPE_CHECKING, List, cast
if TYPE_CHECKING:
from UM.Scene.SceneNode import SceneNode
from UM.Scene.Scene import Scene
from UM.Settings.ContainerStack import ContainerStack
catalog = i18nCatalog("cura")
class SimulationView(CuraView):
"""The preview layer view. It is used to display g-code paths."""
# Must match SimulationViewMenuComponent.qml
LAYER_VIEW_TYPE_MATERIAL_TYPE = 0
LAYER_VIEW_TYPE_LINE_TYPE = 1
LAYER_VIEW_TYPE_FEEDRATE = 2
LAYER_VIEW_TYPE_THICKNESS = 3
_no_layers_warning_preference = "view/no_layers_warning"
def __init__(self, parent = None) -> None:
super().__init__(parent)
self._max_layers = 0
self._current_layer_num = 0
self._minimum_layer_num = 0
self._current_layer_mesh = None
self._current_layer_jumps = None
self._top_layers_job = None # type: Optional["_CreateTopLayersJob"]
self._activity = False
self._old_max_layers = 0
self._max_paths = 0
self._current_path_num = 0
self._minimum_path_num = 0
self.currentLayerNumChanged.connect(self._onCurrentLayerNumChanged)
self._busy = False
self._simulation_running = False
self._ghost_shader = None # type: Optional["ShaderProgram"]
self._layer_pass = None # type: Optional[SimulationPass]
self._composite_pass = None # type: Optional[CompositePass]
self._old_layer_bindings = None # type: Optional[List[str]]
self._simulationview_composite_shader = None # type: Optional["ShaderProgram"]
self._old_composite_shader = None # type: Optional["ShaderProgram"]
self._max_feedrate = sys.float_info.min
self._min_feedrate = sys.float_info.max
self._max_thickness = sys.float_info.min
self._min_thickness = sys.float_info.max
self._max_line_width = sys.float_info.min
self._min_line_width = sys.float_info.max
self._min_flow_rate = sys.float_info.max
self._max_flow_rate = sys.float_info.min
self._global_container_stack = None # type: Optional[ContainerStack]
self._proxy = None
self._resetSettings()
self._legend_items = None
self._show_travel_moves = False
self._nozzle_node = None # type: Optional[NozzleNode]
Application.getInstance().getPreferences().addPreference("view/top_layer_count", 5)
Application.getInstance().getPreferences().addPreference("view/only_show_top_layers", False)
Application.getInstance().getPreferences().addPreference("view/force_layer_view_compatibility_mode", False)
Application.getInstance().getPreferences().addPreference("layerview/layer_view_type", 1) # Default to "Line Type".
Application.getInstance().getPreferences().addPreference("layerview/extruder_opacities", "")
Application.getInstance().getPreferences().addPreference("layerview/show_travel_moves", False)
Application.getInstance().getPreferences().addPreference("layerview/show_helpers", True)
Application.getInstance().getPreferences().addPreference("layerview/show_skin", True)
Application.getInstance().getPreferences().addPreference("layerview/show_infill", True)
Application.getInstance().getPreferences().addPreference("layerview/show_starts", True)
self.visibleStructuresChanged.connect(self.calculateColorSchemeLimits)
self._updateWithPreferences()
self._solid_layers = int(Application.getInstance().getPreferences().getValue("view/top_layer_count"))
self._only_show_top_layers = bool(Application.getInstance().getPreferences().getValue("view/only_show_top_layers"))
self._compatibility_mode = self._evaluateCompatibilityMode()
self._slice_first_warning_message = Message(catalog.i18nc("@info:status",
"Nothing is shown because you need to slice first."),
title = catalog.i18nc("@info:title", "No layers to show"),
option_text = catalog.i18nc("@info:option_text",
"Do not show this message again"),
option_state = False,
message_type = Message.MessageType.WARNING)
self._slice_first_warning_message.optionToggled.connect(self._onDontAskMeAgain)
CuraApplication.getInstance().getPreferences().addPreference(self._no_layers_warning_preference, True)
QtApplication.getInstance().engineCreatedSignal.connect(self._onEngineCreated)
def _onEngineCreated(self) -> None:
plugin_path = PluginRegistry.getInstance().getPluginPath(self.getPluginId())
if plugin_path:
self.addDisplayComponent("main", os.path.join(plugin_path, "SimulationViewMainComponent.qml"))
self.addDisplayComponent("menu", os.path.join(plugin_path, "SimulationViewMenuComponent.qml"))
else:
Logger.log("e", "Unable to find the path for %s", self.getPluginId())
def _evaluateCompatibilityMode(self) -> bool:
return OpenGLContext.isLegacyOpenGL() or bool(Application.getInstance().getPreferences().getValue("view/force_layer_view_compatibility_mode"))
def _resetSettings(self) -> None:
self._layer_view_type = 0 # type: int # 0 is material color, 1 is color by linetype, 2 is speed, 3 is layer thickness
self._extruder_count = 0
self._extruder_opacity = [[1.0, 1.0, 1.0, 1.0], [1.0, 1.0, 1.0, 1.0], [1.0, 1.0, 1.0, 1.0], [1.0, 1.0, 1.0, 1.0]]
self._show_travel_moves = False
self._show_helpers = True
self._show_skin = True
self._show_infill = True
self._show_starts = True
self.resetLayerData()
def getActivity(self) -> bool:
return self._activity
def setActivity(self, activity: bool) -> None:
if self._activity == activity:
return
self._activity = activity
self._updateSliceWarningVisibility()
self.activityChanged.emit()
def getSimulationPass(self) -> SimulationPass:
if not self._layer_pass:
# Currently the RenderPass constructor requires a size > 0
# This should be fixed in RenderPass's constructor.
self._layer_pass = SimulationPass(1, 1)
self._compatibility_mode = self._evaluateCompatibilityMode()
self._layer_pass.setSimulationView(self)
return self._layer_pass
def getCurrentLayer(self) -> int:
return self._current_layer_num
def getMinimumLayer(self) -> int:
return self._minimum_layer_num
def getMaxLayers(self) -> int:
return self._max_layers
def getCurrentPath(self) -> int:
return self._current_path_num
def getMinimumPath(self) -> int:
return self._minimum_path_num
def getMaxPaths(self) -> int:
return self._max_paths
def getNozzleNode(self) -> NozzleNode:
if not self._nozzle_node:
self._nozzle_node = NozzleNode()
return self._nozzle_node
def _onSceneChanged(self, node: "SceneNode") -> None:
if node.getMeshData() is None:
return
self.setActivity(False)
self.calculateColorSchemeLimits()
self.calculateMaxLayers()
self.calculateMaxPathsOnLayer(self._current_layer_num)
def isBusy(self) -> bool:
return self._busy
def setBusy(self, busy: bool) -> None:
if busy != self._busy:
self._busy = busy
self.busyChanged.emit()
def isSimulationRunning(self) -> bool:
return self._simulation_running
def setSimulationRunning(self, running: bool) -> None:
self._simulation_running = running
def resetLayerData(self) -> None:
self._current_layer_mesh = None
self._current_layer_jumps = None
def beginRendering(self) -> None:
scene = self.getController().getScene()
renderer = self.getRenderer()
if renderer is None:
return
if not self._ghost_shader:
self._ghost_shader = OpenGL.getInstance().createShaderProgram(Resources.getPath(Resources.Shaders, "color.shader"))
theme = CuraApplication.getInstance().getTheme()
if theme is not None:
self._ghost_shader.setUniformValue("u_color", Color(*theme.getColor("layerview_ghost").getRgb()))
for node in DepthFirstIterator(scene.getRoot()):
# We do not want to render ConvexHullNode as it conflicts with the bottom layers.
# However, it is somewhat relevant when the node is selected, so do render it then.
if type(node) is ConvexHullNode and not Selection.isSelected(cast(ConvexHullNode, node).getWatchedNode()):
continue
if not node.render(renderer):
if (node.getMeshData()) and node.isVisible():
renderer.queueNode(node, transparent = True, shader = self._ghost_shader)
def setLayer(self, value: int) -> None:
"""
Set the upper end of the range of visible layers.
If setting it below the lower end of the range, the lower end is lowered so that 1 layer stays visible.
:param value: The new layer number to show, 0-indexed.
"""
if self._current_layer_num != value:
self._current_layer_num = min(max(value, 0), self._max_layers)
self._minimum_layer_num = min(self._current_layer_num, self._minimum_layer_num)
self._startUpdateTopLayers()
self.currentLayerNumChanged.emit()
def setMinimumLayer(self, value: int) -> None:
"""
Set the lower end of the range of visible layers.
If setting it above the upper end of the range, the upper end is increased so that 1 layer stays visible.
:param value: The new lower end of the range of visible layers, 0-indexed.
"""
if self._minimum_layer_num != value:
self._minimum_layer_num = min(max(value, 0), self._max_layers)
self._current_layer_num = max(self._current_layer_num, self._minimum_layer_num)
self._startUpdateTopLayers()
self.currentLayerNumChanged.emit()
def setPath(self, value: int) -> None:
"""
Set the upper end of the range of visible paths on the current layer.
If setting it below the lower end of the range, the lower end is lowered so that 1 path stays visible.
:param value: The new path index to show, 0-indexed.
"""
if self._current_path_num != value:
self._current_path_num = min(max(value, 0), self._max_paths)
self._minimum_path_num = min(self._minimum_path_num, self._current_path_num)
self._startUpdateTopLayers()
self.currentPathNumChanged.emit()
def setMinimumPath(self, value: int) -> None:
"""
Set the lower end of the range of visible paths on the current layer.
If setting it above the upper end of the range, the upper end is increased so that 1 path stays visible.
:param value: The new lower end of the range of visible paths, 0-indexed.
"""
if self._minimum_path_num != value:
self._minimum_path_num = min(max(value, 0), self._max_paths)
self._current_path_num = max(self._current_path_num, self._minimum_path_num)
self._startUpdateTopLayers()
self.currentPathNumChanged.emit()
def setSimulationViewType(self, layer_view_type: int) -> None:
"""Set the layer view type
:param layer_view_type: integer as in SimulationView.qml and this class
"""
if layer_view_type != self._layer_view_type:
self._layer_view_type = layer_view_type
self.currentLayerNumChanged.emit()
def getSimulationViewType(self) -> int:
"""Return the layer view type, integer as in SimulationView.qml and this class"""
return self._layer_view_type
def setExtruderOpacity(self, extruder_nr: int, opacity: float) -> None:
"""Set the extruder opacity
:param extruder_nr: 0..15
:param opacity: 0.0 .. 1.0
"""
if 0 <= extruder_nr <= 15:
self._extruder_opacity[extruder_nr // 4][extruder_nr % 4] = opacity
self.currentLayerNumChanged.emit()
def getExtruderOpacities(self) -> Matrix:
# NOTE: Extruder opacities are stored in a matrix for (minor) performance reasons (w.r.t. OpenGL/shaders).
# If more than 16 extruders are called for, this should be converted to a sampler1d.
return Matrix(self._extruder_opacity)
def setShowTravelMoves(self, show: bool) -> None:
if show == self._show_travel_moves:
return
self._show_travel_moves = show
self.currentLayerNumChanged.emit()
self.visibleStructuresChanged.emit()
def getShowTravelMoves(self) -> bool:
return self._show_travel_moves
def setShowHelpers(self, show: bool) -> None:
if show == self._show_helpers:
return
self._show_helpers = show
self.currentLayerNumChanged.emit()
self.visibleStructuresChanged.emit()
def getShowHelpers(self) -> bool:
return self._show_helpers
def setShowSkin(self, show: bool) -> None:
if show == self._show_skin:
return
self._show_skin = show
self.currentLayerNumChanged.emit()
self.visibleStructuresChanged.emit()
def getShowSkin(self) -> bool:
return self._show_skin
def setShowInfill(self, show: bool) -> None:
if show == self._show_infill:
return
self._show_infill = show
self.currentLayerNumChanged.emit()
self.visibleStructuresChanged.emit()
def getShowInfill(self) -> bool:
return self._show_infill
def setShowStarts(self, show: bool) -> None:
if show == self._show_starts:
return
self._show_starts = show
self.currentLayerNumChanged.emit()
self.visibleStructuresChanged.emit()
def getShowStarts(self) -> bool:
return self._show_starts
def getCompatibilityMode(self) -> bool:
return self._compatibility_mode
def getExtruderCount(self) -> int:
return self._extruder_count
def getMinFeedrate(self) -> float:
if abs(self._min_feedrate - sys.float_info.max) < 10: # Some lenience due to floating point rounding.
return 0.0 # If it's still max-float, there are no measurements. Use 0 then.
return self._min_feedrate
def getMaxFeedrate(self) -> float:
return self._max_feedrate
def getMinThickness(self) -> float:
if abs(self._min_thickness - sys.float_info.max) < 10: # Some lenience due to floating point rounding.
return 0.0 # If it's still max-float, there are no measurements. Use 0 then.
return self._min_thickness
def getMaxThickness(self) -> float:
return self._max_thickness
def getMaxLineWidth(self) -> float:
return self._max_line_width
def getMinLineWidth(self) -> float:
if abs(self._min_line_width - sys.float_info.max) < 10: # Some lenience due to floating point rounding.
return 0.0 # If it's still max-float, there are no measurements. Use 0 then.
return self._min_line_width
def getMaxFlowRate(self) -> float:
return self._max_flow_rate
def getMinFlowRate(self) -> float:
if abs(self._min_flow_rate - sys.float_info.max) < 10: # Some lenience due to floating point rounding.
return 0.0 # If it's still max-float, there are no measurements. Use 0 then.
return self._min_flow_rate
def calculateMaxLayers(self) -> None:
"""
Calculates number of layers, triggers signals if the number of layers changed and makes sure the top layers are
recalculated for legacy layer view.
"""
scene = self.getController().getScene()
self._old_max_layers = self._max_layers
new_max_layers = -1
for node in DepthFirstIterator(scene.getRoot()): # type: ignore
layer_data = node.callDecoration("getLayerData")
if not layer_data:
continue
self.setActivity(True)
min_layer_number = sys.maxsize
max_layer_number = -sys.maxsize
for layer_id in layer_data.getLayers():
# If a layer doesn't contain any polygons, skip it (for infill meshes taller than print objects
if len(layer_data.getLayer(layer_id).polygons) < 1:
continue
if max_layer_number < layer_id:
max_layer_number = layer_id
if min_layer_number > layer_id:
min_layer_number = layer_id
layer_count = max_layer_number - min_layer_number
if new_max_layers < layer_count:
new_max_layers = layer_count
if new_max_layers >= 0 and new_max_layers != self._old_max_layers:
self._max_layers = new_max_layers
# The qt slider has a bit of weird behavior that if the maxvalue needs to be changed first
# if it's the largest value. If we don't do this, we can have a slider block outside of the
# slider.
if new_max_layers > self._current_layer_num:
self.maxLayersChanged.emit()
self.setLayer(int(self._max_layers))
else:
self.setLayer(int(self._max_layers))
self.maxLayersChanged.emit()
self._startUpdateTopLayers()
def calculateColorSchemeLimits(self) -> None:
"""
Calculates the limits of the colour schemes, depending on the layer view data that is visible to the user.
"""
# Before we start, save the old values so that we can tell if any of the spectrums need to change.
old_min_feedrate = self._min_feedrate
old_max_feedrate = self._max_feedrate
old_min_linewidth = self._min_line_width
old_max_linewidth = self._max_line_width
old_min_thickness = self._min_thickness
old_max_thickness = self._max_thickness
old_min_flow_rate = self._min_flow_rate
old_max_flow_rate = self._max_flow_rate
self._min_feedrate = sys.float_info.max
self._max_feedrate = sys.float_info.min
self._min_line_width = sys.float_info.max
self._max_line_width = sys.float_info.min
self._min_thickness = sys.float_info.max
self._max_thickness = sys.float_info.min
self._min_flow_rate = sys.float_info.max
self._max_flow_rate = sys.float_info.min
# The colour scheme is only influenced by the visible lines, so filter the lines by if they should be visible.
visible_line_types = []
if self.getShowSkin(): # Actually "shell".
visible_line_types.append(LayerPolygon.SkinType)
visible_line_types.append(LayerPolygon.Inset0Type)
visible_line_types.append(LayerPolygon.InsetXType)
if self.getShowInfill():
visible_line_types.append(LayerPolygon.InfillType)
if self.getShowHelpers():
visible_line_types.append(LayerPolygon.PrimeTowerType)
visible_line_types.append(LayerPolygon.SkirtType)
visible_line_types.append(LayerPolygon.SupportType)
visible_line_types.append(LayerPolygon.SupportInfillType)
visible_line_types.append(LayerPolygon.SupportInterfaceType)
visible_line_types_with_extrusion = visible_line_types.copy() # Copy before travel moves are added
if self.getShowTravelMoves():
visible_line_types.append(LayerPolygon.MoveCombingType)
visible_line_types.append(LayerPolygon.MoveRetractionType)
for node in DepthFirstIterator(self.getController().getScene().getRoot()):
layer_data = node.callDecoration("getLayerData")
if not layer_data:
continue
for layer_index in layer_data.getLayers():
for polyline in layer_data.getLayer(layer_index).polygons:
is_visible = numpy.isin(polyline.types, visible_line_types)
visible_indices = numpy.where(is_visible)[0]
visible_indicies_with_extrusion = numpy.where(numpy.isin(polyline.types, visible_line_types_with_extrusion))[0]
if visible_indices.size == 0: # No items to take maximum or minimum of.
continue
visible_feedrates = numpy.take(polyline.lineFeedrates, visible_indices)
visible_feedrates_with_extrusion = numpy.take(polyline.lineFeedrates, visible_indicies_with_extrusion)
visible_linewidths = numpy.take(polyline.lineWidths, visible_indices)
visible_linewidths_with_extrusion = numpy.take(polyline.lineWidths, visible_indicies_with_extrusion)
visible_thicknesses = numpy.take(polyline.lineThicknesses, visible_indices)
visible_thicknesses_with_extrusion = numpy.take(polyline.lineThicknesses, visible_indicies_with_extrusion)
self._max_feedrate = max(float(visible_feedrates.max()), self._max_feedrate)
if visible_feedrates_with_extrusion.size != 0:
flow_rates = visible_feedrates_with_extrusion * visible_linewidths_with_extrusion * visible_thicknesses_with_extrusion
self._min_flow_rate = min(float(flow_rates.min()), self._min_flow_rate)
self._max_flow_rate = max(float(flow_rates.max()), self._max_flow_rate)
self._min_feedrate = min(float(visible_feedrates.min()), self._min_feedrate)
self._max_line_width = max(float(visible_linewidths.max()), self._max_line_width)
self._min_line_width = min(float(visible_linewidths.min()), self._min_line_width)
self._max_thickness = max(float(visible_thicknesses.max()), self._max_thickness)
try:
self._min_thickness = min(float(visible_thicknesses[numpy.nonzero(visible_thicknesses)].min()), self._min_thickness)
except ValueError:
# Sometimes, when importing a GCode the line thicknesses are zero and so the minimum (avoiding the zero) can't be calculated.
Logger.log("w", "Min thickness can't be calculated because all the values are zero")
if old_min_feedrate != self._min_feedrate or old_max_feedrate != self._max_feedrate \
or old_min_linewidth != self._min_line_width or old_max_linewidth != self._max_line_width \
or old_min_thickness != self._min_thickness or old_max_thickness != self._max_thickness \
or old_min_flow_rate != self._min_flow_rate or old_max_flow_rate != self._max_flow_rate:
self.colorSchemeLimitsChanged.emit()
def calculateMaxPathsOnLayer(self, layer_num: int) -> None:
# Update the currentPath
scene = self.getController().getScene()
for node in DepthFirstIterator(scene.getRoot()): # type: ignore
layer_data = node.callDecoration("getLayerData")
if not layer_data:
continue
layer = layer_data.getLayer(layer_num)
if layer is None:
return
new_max_paths = layer.lineMeshElementCount()
if new_max_paths >= 0 and new_max_paths != self._max_paths:
self._max_paths = new_max_paths
self.maxPathsChanged.emit()
self.setPath(int(new_max_paths))
maxLayersChanged = Signal()
maxPathsChanged = Signal()
currentLayerNumChanged = Signal()
currentPathNumChanged = Signal()
globalStackChanged = Signal()
preferencesChanged = Signal()
busyChanged = Signal()
activityChanged = Signal()
visibleStructuresChanged = Signal()
colorSchemeLimitsChanged = Signal()
def getProxy(self, engine, script_engine):
"""Hackish way to ensure the proxy is already created
which ensures that the layerview.qml is already created as this caused some issues.
"""
if self._proxy is None:
self._proxy = SimulationViewProxy(self)
return self._proxy
def endRendering(self) -> None:
pass
def event(self, event) -> bool:
modifiers = QApplication.keyboardModifiers()
ctrl_is_active = modifiers & Qt.KeyboardModifier.ControlModifier
shift_is_active = modifiers & Qt.KeyboardModifier.ShiftModifier
if event.type == Event.KeyPressEvent and ctrl_is_active:
amount = 10 if shift_is_active else 1
if event.key == KeyEvent.UpKey:
self.setLayer(self._current_layer_num + amount)
return True
if event.key == KeyEvent.DownKey:
self.setLayer(self._current_layer_num - amount)
return True
if event.type == Event.ViewActivateEvent:
# Start listening to changes.
Application.getInstance().getPreferences().preferenceChanged.connect(self._onPreferencesChanged)
self._controller.getScene().getRoot().childrenChanged.connect(self._onSceneChanged)
self.calculateColorSchemeLimits()
self.calculateMaxLayers()
self.calculateMaxPathsOnLayer(self._current_layer_num)
# FIX: on Max OS X, somehow QOpenGLContext.currentContext() can become None during View switching.
# This can happen when you do the following steps:
# 1. Start Cura
# 2. Load a model
# 3. Switch to Custom mode
# 4. Select the model and click on the per-object tool icon
# 5. Switch view to Layer view or X-Ray
# 6. Cura will very likely crash
# It seems to be a timing issue that the currentContext can somehow be empty, but I have no clue why.
# This fix tries to reschedule the view changing event call on the Qt thread again if the current OpenGL
# context is None.
if Platform.isOSX():
if QOpenGLContext.currentContext() is None:
Logger.log("d", "current context of OpenGL is empty on Mac OS X, will try to create shaders later")
CuraApplication.getInstance().callLater(lambda e=event: self.event(e))
return False
# Make sure the SimulationPass is created
layer_pass = self.getSimulationPass()
renderer = self.getRenderer()
if renderer is None:
return False
renderer.addRenderPass(layer_pass)
# Make sure the NozzleNode is add to the root
nozzle = self.getNozzleNode()
nozzle.setParent(self.getController().getScene().getRoot())
nozzle.setVisible(False)
Application.getInstance().globalContainerStackChanged.connect(self._onGlobalStackChanged)
self._onGlobalStackChanged()
if not self._simulationview_composite_shader:
plugin_path = cast(str, PluginRegistry.getInstance().getPluginPath("SimulationView"))
self._simulationview_composite_shader = OpenGL.getInstance().createShaderProgram(os.path.join(plugin_path, "simulationview_composite.shader"))
theme = CuraApplication.getInstance().getTheme()
if theme is not None:
self._simulationview_composite_shader.setUniformValue("u_background_color", Color(*theme.getColor("viewport_background").getRgb()))
self._simulationview_composite_shader.setUniformValue("u_outline_color", Color(*theme.getColor("model_selection_outline").getRgb()))
if not self._composite_pass:
self._composite_pass = cast(CompositePass, renderer.getRenderPass("composite"))
self._old_layer_bindings = self._composite_pass.getLayerBindings()[:] # make a copy so we can restore to it later
self._composite_pass.getLayerBindings().append("simulationview")
self._old_composite_shader = self._composite_pass.getCompositeShader()
self._composite_pass.setCompositeShader(self._simulationview_composite_shader)
self._updateSliceWarningVisibility()
elif event.type == Event.ViewDeactivateEvent:
self._controller.getScene().getRoot().childrenChanged.disconnect(self._onSceneChanged)
Application.getInstance().getPreferences().preferenceChanged.disconnect(self._onPreferencesChanged)
self._slice_first_warning_message.hide()
Application.getInstance().globalContainerStackChanged.disconnect(self._onGlobalStackChanged)
if self._nozzle_node:
self._nozzle_node.setParent(None)
renderer = self.getRenderer()
if renderer is None:
return False
if self._layer_pass is not None:
renderer.removeRenderPass(self._layer_pass)
if self._composite_pass:
self._composite_pass.setLayerBindings(cast(List[str], self._old_layer_bindings))
self._composite_pass.setCompositeShader(cast(ShaderProgram, self._old_composite_shader))
return False
def getCurrentLayerMesh(self):
return self._current_layer_mesh
def getCurrentLayerJumps(self):
return self._current_layer_jumps
def _onGlobalStackChanged(self) -> None:
self._global_container_stack = Application.getInstance().getGlobalContainerStack()
if self._global_container_stack:
self._extruder_count = self._global_container_stack.getProperty("machine_extruder_count", "value")
self.globalStackChanged.emit()
def _onCurrentLayerNumChanged(self) -> None:
self.calculateMaxPathsOnLayer(self._current_layer_num)
scene = Application.getInstance().getController().getScene()
scene.sceneChanged.emit(scene.getRoot())
def _startUpdateTopLayers(self) -> None:
if not self._compatibility_mode:
return
if self._top_layers_job:
self._top_layers_job.finished.disconnect(self._updateCurrentLayerMesh)
self._top_layers_job.cancel()
self.setBusy(True)
self._top_layers_job = _CreateTopLayersJob(self._controller.getScene(), self._current_layer_num, self._solid_layers)
self._top_layers_job.finished.connect(self._updateCurrentLayerMesh) # type: ignore # mypy doesn't understand the whole private class thing that's going on here.
self._top_layers_job.start() # type: ignore
def _updateCurrentLayerMesh(self, job: "_CreateTopLayersJob") -> None:
self.setBusy(False)
if not job.getResult():
return
self.resetLayerData() # Reset the layer data only when job is done. Doing it now prevents "blinking" data.
self._current_layer_mesh = job.getResult().get("layers")
if self._show_travel_moves:
self._current_layer_jumps = job.getResult().get("jumps")
self._controller.getScene().sceneChanged.emit(self._controller.getScene().getRoot())
self._top_layers_job = None
def _updateWithPreferences(self) -> None:
self._solid_layers = int(Application.getInstance().getPreferences().getValue("view/top_layer_count"))
self._only_show_top_layers = bool(Application.getInstance().getPreferences().getValue("view/only_show_top_layers"))
self._compatibility_mode = self._evaluateCompatibilityMode()
self.setSimulationViewType(int(float(Application.getInstance().getPreferences().getValue("layerview/layer_view_type"))))
for extruder_nr, extruder_opacity in enumerate(Application.getInstance().getPreferences().getValue("layerview/extruder_opacities").split("|")):
try:
opacity = float(extruder_opacity)
except ValueError:
opacity = 1.0
self.setExtruderOpacity(extruder_nr, opacity)
self.setShowTravelMoves(bool(Application.getInstance().getPreferences().getValue("layerview/show_travel_moves")))
self.setShowHelpers(bool(Application.getInstance().getPreferences().getValue("layerview/show_helpers")))
self.setShowSkin(bool(Application.getInstance().getPreferences().getValue("layerview/show_skin")))
self.setShowInfill(bool(Application.getInstance().getPreferences().getValue("layerview/show_infill")))
self.setShowStarts(bool(Application.getInstance().getPreferences().getValue("layerview/show_starts")))
self._startUpdateTopLayers()
self.preferencesChanged.emit()
def _onPreferencesChanged(self, preference: str) -> None:
if preference not in {
"view/top_layer_count",
"view/only_show_top_layers",
"view/force_layer_view_compatibility_mode",
"layerview/layer_view_type",
"layerview/extruder_opacities",
"layerview/show_travel_moves",
"layerview/show_helpers",
"layerview/show_skin",
"layerview/show_infill",
"layerview/show_starts",
}:
return
self._updateWithPreferences()
def _updateSliceWarningVisibility(self):
if not self.getActivity()\
and not CuraApplication.getInstance().getPreferences().getValue("general/auto_slice")\
and CuraApplication.getInstance().getPreferences().getValue(self._no_layers_warning_preference):
self._slice_first_warning_message.show()
else:
self._slice_first_warning_message.hide()
def _onDontAskMeAgain(self, checked: bool) -> None:
CuraApplication.getInstance().getPreferences().setValue(self._no_layers_warning_preference, not checked)
class _CreateTopLayersJob(Job):
def __init__(self, scene: "Scene", layer_number: int, solid_layers: int) -> None:
super().__init__()
self._scene = scene
self._layer_number = layer_number
self._solid_layers = solid_layers
self._cancel = False
def run(self) -> None:
layer_data = None
for node in DepthFirstIterator(self._scene.getRoot()): # type: ignore
layer_data = node.callDecoration("getLayerData")
if layer_data:
break
if self._cancel or not layer_data:
return
layer_mesh = MeshBuilder()
for i in range(self._solid_layers):
layer_number = self._layer_number - i
if layer_number < 0:
continue
try:
layer = layer_data.getLayer(layer_number).createMesh()
except Exception:
Logger.logException("w", "An exception occurred while creating layer mesh.")
return
if not layer or layer.getVertices() is None:
continue
layer_mesh.addIndices(layer_mesh.getVertexCount() + layer.getIndices())
layer_mesh.addVertices(layer.getVertices())
# Scale layer color by a brightness factor based on the current layer number
# This will result in a range of 0.5 - 1.0 to multiply colors by.
brightness = numpy.ones((1, 4), dtype=numpy.float32) * (2.0 - (i / self._solid_layers)) / 2.0
brightness[0, 3] = 1.0
layer_mesh.addColors(layer.getColors() * brightness)
if self._cancel:
return
Job.yieldThread()
if self._cancel:
return
Job.yieldThread()
jump_mesh = layer_data.getLayer(self._layer_number).createJumps()
if not jump_mesh or jump_mesh.getVertices() is None:
jump_mesh = None
self.setResult({"layers": layer_mesh.build(), "jumps": jump_mesh})
def cancel(self) -> None:
self._cancel = True
super().cancel()