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BuildVolume.py
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# Copyright (c) 2021 Ultimaker B.V.
# Cura is released under the terms of the LGPLv3 or higher.
import numpy
import math
from typing import List, Optional, TYPE_CHECKING, Any, Set, cast, Iterable, Dict
from UM.Logger import Logger
from UM.Mesh.MeshData import MeshData
from UM.Mesh.MeshBuilder import MeshBuilder
from UM.Application import Application #To modify the maximum zoom level.
from UM.i18n import i18nCatalog
from UM.Scene.Platform import Platform
from UM.Scene.Iterator.BreadthFirstIterator import BreadthFirstIterator
from UM.Scene.SceneNode import SceneNode
from UM.Resources import Resources
from UM.Math.Vector import Vector
from UM.Math.Matrix import Matrix
from UM.Math.Color import Color
from UM.Math.AxisAlignedBox import AxisAlignedBox
from UM.Math.Polygon import Polygon
from UM.Message import Message
from UM.Signal import Signal
from UM.View.RenderBatch import RenderBatch
from UM.View.GL.OpenGL import OpenGL
from cura.Settings.GlobalStack import GlobalStack
from cura.Scene.CuraSceneNode import CuraSceneNode
from cura.Settings.ExtruderManager import ExtruderManager
from PyQt6.QtCore import QTimer
if TYPE_CHECKING:
from cura.CuraApplication import CuraApplication
from cura.Settings.ExtruderStack import ExtruderStack
from UM.Settings.ContainerStack import ContainerStack
catalog = i18nCatalog("cura")
# Radius of disallowed area in mm around prime. I.e. how much distance to keep from prime position.
PRIME_CLEARANCE = 6.5
class BuildVolume(SceneNode):
"""Build volume is a special kind of node that is responsible for rendering the printable area & disallowed areas."""
raftThicknessChanged = Signal()
def __init__(self, application: "CuraApplication", parent: Optional[SceneNode] = None) -> None:
super().__init__(parent)
self._application = application
self._machine_manager = self._application.getMachineManager()
self._volume_outline_color = None # type: Optional[Color]
self._x_axis_color = None # type: Optional[Color]
self._y_axis_color = None # type: Optional[Color]
self._z_axis_color = None # type: Optional[Color]
self._disallowed_area_color = None # type: Optional[Color]
self._error_area_color = None # type: Optional[Color]
self._width = 0 # type: float
self._height = 0 # type: float
self._depth = 0 # type: float
self._shape = "" # type: str
self._scale_vector = Vector(1.0, 1.0, 1.0)
self._shader = None
self._origin_mesh = None # type: Optional[MeshData]
self._origin_line_length = 20
self._origin_line_width = 1
self._enabled = False
self._grid_mesh = None # type: Optional[MeshData]
self._grid_shader = None
self._disallowed_areas = [] # type: List[Polygon]
self._disallowed_areas_no_brim = [] # type: List[Polygon]
self._disallowed_area_mesh = None # type: Optional[MeshData]
self._disallowed_area_size = 0.
self._error_areas = [] # type: List[Polygon]
self._error_mesh = None # type: Optional[MeshData]
self.setCalculateBoundingBox(False)
self._volume_aabb = None # type: Optional[AxisAlignedBox]
self._raft_thickness = 0.0
self._extra_z_clearance = 0.0
self._adhesion_type = None # type: Any
self._platform = Platform(self)
self._edge_disallowed_size = None
self._build_volume_message = Message(catalog.i18nc("@info:status",
"The build volume height has been reduced due to the value of the"
" \"Print Sequence\" setting to prevent the gantry from colliding"
" with printed models."),
title = catalog.i18nc("@info:title", "Build Volume"),
message_type = Message.MessageType.WARNING)
self._global_container_stack = None # type: Optional[GlobalStack]
self._stack_change_timer = QTimer()
self._stack_change_timer.setInterval(100)
self._stack_change_timer.setSingleShot(True)
self._stack_change_timer.timeout.connect(self._onStackChangeTimerFinished)
self._application.globalContainerStackChanged.connect(self._onStackChanged)
self._engine_ready = False
self._application.engineCreatedSignal.connect(self._onEngineCreated)
self._has_errors = False
self._application.getController().getScene().sceneChanged.connect(self._onSceneChanged)
# Objects loaded at the moment. We are connected to the property changed events of these objects.
self._scene_objects = set() # type: Set[SceneNode]
self._scene_change_timer = QTimer()
self._scene_change_timer.setInterval(200)
self._scene_change_timer.setSingleShot(True)
self._scene_change_timer.timeout.connect(self._onSceneChangeTimerFinished)
self._setting_change_timer = QTimer()
self._setting_change_timer.setInterval(150)
self._setting_change_timer.setSingleShot(True)
self._setting_change_timer.timeout.connect(self._onSettingChangeTimerFinished)
# Must be after setting _build_volume_message, apparently that is used in getMachineManager.
# activeQualityChanged is always emitted after setActiveVariant, setActiveMaterial and setActiveQuality.
# Therefore this works.
self._machine_manager.activeQualityChanged.connect(self._onStackChanged)
# Enable and disable extruder
self._machine_manager.extruderChanged.connect(self.updateNodeBoundaryCheck)
# List of settings which were updated
self._changed_settings_since_last_rebuild = [] # type: List[str]
def _onSceneChanged(self, source):
if self._global_container_stack:
# Ignore anything that is not something we can slice in the first place!
if source.callDecoration("isSliceable"):
self._scene_change_timer.start()
def _onSceneChangeTimerFinished(self):
root = self._application.getController().getScene().getRoot()
new_scene_objects = set(node for node in BreadthFirstIterator(root) if node.callDecoration("isSliceable"))
if new_scene_objects != self._scene_objects:
for node in new_scene_objects - self._scene_objects: #Nodes that were added to the scene.
self._updateNodeListeners(node)
node.decoratorsChanged.connect(self._updateNodeListeners) # Make sure that decoration changes afterwards also receive the same treatment
for node in self._scene_objects - new_scene_objects: #Nodes that were removed from the scene.
per_mesh_stack = node.callDecoration("getStack")
if per_mesh_stack:
per_mesh_stack.propertyChanged.disconnect(self._onSettingPropertyChanged)
active_extruder_changed = node.callDecoration("getActiveExtruderChangedSignal")
if active_extruder_changed is not None:
node.callDecoration("getActiveExtruderChangedSignal").disconnect(self._updateDisallowedAreasAndRebuild)
node.decoratorsChanged.disconnect(self._updateNodeListeners)
self.rebuild()
self._scene_objects = new_scene_objects
self._onSettingPropertyChanged("print_sequence", "value") # Create fake event, so right settings are triggered.
def _updateNodeListeners(self, node: SceneNode):
"""Updates the listeners that listen for changes in per-mesh stacks.
:param node: The node for which the decorators changed.
"""
per_mesh_stack = node.callDecoration("getStack")
if per_mesh_stack:
per_mesh_stack.propertyChanged.connect(self._onSettingPropertyChanged)
active_extruder_changed = node.callDecoration("getActiveExtruderChangedSignal")
if active_extruder_changed is not None:
active_extruder_changed.connect(self._updateDisallowedAreasAndRebuild)
def setWidth(self, width: float) -> None:
self._width = width
def getWidth(self) -> float:
return self._width
def setHeight(self, height: float) -> None:
self._height = height
def getHeight(self) -> float:
return self._height
def setDepth(self, depth: float) -> None:
self._depth = depth
def getDepth(self) -> float:
return self._depth
def setShape(self, shape: str) -> None:
if shape:
self._shape = shape
def getShape(self) -> str:
return self._shape
def getDiagonalSize(self) -> float:
"""Get the length of the 3D diagonal through the build volume.
This gives a sense of the scale of the build volume in general.
:return: length of the 3D diagonal through the build volume
"""
return math.sqrt(self._width * self._width + self._height * self._height + self._depth * self._depth)
def getDisallowedAreas(self) -> List[Polygon]:
return self._disallowed_areas
def getDisallowedAreasNoBrim(self) -> List[Polygon]:
return self._disallowed_areas_no_brim
def setDisallowedAreas(self, areas: List[Polygon]):
self._disallowed_areas = areas
def render(self, renderer):
if not self.getMeshData() or not self.isVisible():
return True
if not self._shader:
self._shader = OpenGL.getInstance().createShaderProgram(Resources.getPath(Resources.Shaders, "default.shader"))
self._grid_shader = OpenGL.getInstance().createShaderProgram(Resources.getPath(Resources.Shaders, "grid.shader"))
theme = self._application.getTheme()
self._grid_shader.setUniformValue("u_plateColor", Color(*theme.getColor("buildplate").getRgb()))
self._grid_shader.setUniformValue("u_gridColor0", Color(*theme.getColor("buildplate_grid").getRgb()))
self._grid_shader.setUniformValue("u_gridColor1", Color(*theme.getColor("buildplate_grid_minor").getRgb()))
renderer.queueNode(self, mode = RenderBatch.RenderMode.Lines)
renderer.queueNode(self, mesh = self._origin_mesh, backface_cull = True)
renderer.queueNode(self, mesh = self._grid_mesh, shader = self._grid_shader, backface_cull = True)
if self._disallowed_area_mesh:
renderer.queueNode(self, mesh = self._disallowed_area_mesh, shader = self._shader, transparent = True, backface_cull = True, sort = -9)
if self._error_mesh:
renderer.queueNode(self, mesh=self._error_mesh, shader=self._shader, transparent=True,
backface_cull=True, sort=-8)
return True
def updateNodeBoundaryCheck(self):
"""For every sliceable node, update node._outside_buildarea"""
if not self._global_container_stack:
return
root = self._application.getController().getScene().getRoot()
nodes = cast(List[SceneNode], list(cast(Iterable, BreadthFirstIterator(root))))
group_nodes = [] # type: List[SceneNode]
build_volume_bounding_box = self.getBoundingBox()
if build_volume_bounding_box:
# It's over 9000!
# We set this to a very low number, as we do allow models to intersect the build plate.
# This means the model gets cut off at the build plate.
build_volume_bounding_box = build_volume_bounding_box.set(bottom=-9001)
else:
# No bounding box. This is triggered when running Cura from command line with a model for the first time
# In that situation there is a model, but no machine (and therefore no build volume.
return
for node in nodes:
# Need to check group nodes later
if node.callDecoration("isGroup"):
group_nodes.append(node) # Keep list of affected group_nodes
if node.callDecoration("isSliceable") or node.callDecoration("isGroup"):
if not isinstance(node, CuraSceneNode):
continue
if node.collidesWithBbox(build_volume_bounding_box):
node.setOutsideBuildArea(True)
continue
if node.collidesWithAreas(self.getDisallowedAreas()):
node.setOutsideBuildArea(True)
continue
# If the entire node is below the build plate, still mark it as outside.
node_bounding_box = node.getBoundingBox()
if node_bounding_box and node_bounding_box.top < 0 and not node.getParent().callDecoration("isGroup"):
node.setOutsideBuildArea(True)
continue
# Mark the node as outside build volume if the set extruder is disabled
extruder_position = node.callDecoration("getActiveExtruderPosition")
try:
if not self._global_container_stack.extruderList[int(extruder_position)].isEnabled and not node.callDecoration("isGroup"):
node.setOutsideBuildArea(True)
continue
except IndexError: # Happens when the extruder list is too short. We're not done building the printer in memory yet.
continue
except TypeError: # Happens when extruder_position is None. This object has no extruder decoration.
continue
node.setOutsideBuildArea(False)
# Group nodes should override the _outside_buildarea property of their children.
for group_node in group_nodes:
children = group_node.getAllChildren()
# Check if one or more children are non-printable and if so, set the parent as non-printable:
for child_node in children:
if child_node.isOutsideBuildArea():
group_node.setOutsideBuildArea(True)
break
# Apply results of the check to all children of the group:
for child_node in children:
child_node.setOutsideBuildArea(group_node.isOutsideBuildArea())
def checkBoundsAndUpdate(self, node: CuraSceneNode, bounds: Optional[AxisAlignedBox] = None) -> None:
"""Update the outsideBuildArea of a single node, given bounds or current build volume
:param node: single node
:param bounds: bounds or current build volume
"""
if not isinstance(node, CuraSceneNode) or self._global_container_stack is None:
return
if bounds is None:
build_volume_bounding_box = self.getBoundingBox()
if build_volume_bounding_box:
# It's over 9000!
build_volume_bounding_box = build_volume_bounding_box.set(bottom=-9001)
else:
# No bounding box. This is triggered when running Cura from command line with a model for the first time
# In that situation there is a model, but no machine (and therefore no build volume.
return
else:
build_volume_bounding_box = bounds
if node.callDecoration("isSliceable") or node.callDecoration("isGroup"):
if node.collidesWithBbox(build_volume_bounding_box):
node.setOutsideBuildArea(True)
return
if node.collidesWithAreas(self.getDisallowedAreas()):
node.setOutsideBuildArea(True)
return
# Mark the node as outside build volume if the set extruder is disabled
extruder_position = node.callDecoration("getActiveExtruderPosition")
try:
if not self._global_container_stack.extruderList[int(extruder_position)].isEnabled:
node.setOutsideBuildArea(True)
return
except IndexError:
# If the extruder doesn't exist, also mark it as unprintable.
node.setOutsideBuildArea(True)
return
node.setOutsideBuildArea(False)
def _buildGridMesh(self, min_w: float, max_w: float, min_h: float, max_h: float, min_d: float, max_d:float, z_fight_distance: float) -> MeshData:
mb = MeshBuilder()
if self._shape != "elliptic":
# Build plate grid mesh
mb.addQuad(
Vector(min_w, min_h - z_fight_distance, min_d),
Vector(max_w, min_h - z_fight_distance, min_d),
Vector(max_w, min_h - z_fight_distance, max_d),
Vector(min_w, min_h - z_fight_distance, max_d)
)
for n in range(0, 6):
v = mb.getVertex(n)
mb.setVertexUVCoordinates(n, v[0], v[2])
return mb.build()
else:
aspect = 1.0
scale_matrix = Matrix()
if self._width != 0:
# Scale circular meshes by aspect ratio if width != height
aspect = self._depth / self._width
scale_matrix.compose(scale=Vector(1, 1, aspect))
mb.addVertex(0, min_h - z_fight_distance, 0)
mb.addArc(max_w, Vector.Unit_Y, center=Vector(0, min_h - z_fight_distance, 0))
sections = mb.getVertexCount() - 1 # Center point is not an arc section
indices = []
for n in range(0, sections - 1):
indices.append([0, n + 2, n + 1])
mb.addIndices(numpy.asarray(indices, dtype=numpy.int32))
mb.calculateNormals()
for n in range(0, mb.getVertexCount()):
v = mb.getVertex(n)
mb.setVertexUVCoordinates(n, v[0], v[2] * aspect)
return mb.build().getTransformed(scale_matrix)
def _buildMesh(self, min_w: float, max_w: float, min_h: float, max_h: float, min_d: float, max_d:float, z_fight_distance: float) -> MeshData:
if self._shape != "elliptic":
# Outline 'cube' of the build volume
mb = MeshBuilder()
mb.addLine(Vector(min_w, min_h, min_d), Vector(max_w, min_h, min_d), color = self._volume_outline_color)
mb.addLine(Vector(min_w, min_h, min_d), Vector(min_w, max_h, min_d), color = self._volume_outline_color)
mb.addLine(Vector(min_w, max_h, min_d), Vector(max_w, max_h, min_d), color = self._volume_outline_color)
mb.addLine(Vector(max_w, min_h, min_d), Vector(max_w, max_h, min_d), color = self._volume_outline_color)
mb.addLine(Vector(min_w, min_h, max_d), Vector(max_w, min_h, max_d), color = self._volume_outline_color)
mb.addLine(Vector(min_w, min_h, max_d), Vector(min_w, max_h, max_d), color = self._volume_outline_color)
mb.addLine(Vector(min_w, max_h, max_d), Vector(max_w, max_h, max_d), color = self._volume_outline_color)
mb.addLine(Vector(max_w, min_h, max_d), Vector(max_w, max_h, max_d), color = self._volume_outline_color)
mb.addLine(Vector(min_w, min_h, min_d), Vector(min_w, min_h, max_d), color = self._volume_outline_color)
mb.addLine(Vector(max_w, min_h, min_d), Vector(max_w, min_h, max_d), color = self._volume_outline_color)
mb.addLine(Vector(min_w, max_h, min_d), Vector(min_w, max_h, max_d), color = self._volume_outline_color)
mb.addLine(Vector(max_w, max_h, min_d), Vector(max_w, max_h, max_d), color = self._volume_outline_color)
return mb.build()
else:
# Bottom and top 'ellipse' of the build volume
scale_matrix = Matrix()
if self._width != 0:
# Scale circular meshes by aspect ratio if width != height
aspect = self._depth / self._width
scale_matrix.compose(scale = Vector(1, 1, aspect))
mb = MeshBuilder()
mb.addArc(max_w, Vector.Unit_Y, center = (0, min_h - z_fight_distance, 0), color = self._volume_outline_color)
mb.addArc(max_w, Vector.Unit_Y, center = (0, max_h, 0), color = self._volume_outline_color)
return mb.build().getTransformed(scale_matrix)
def _buildOriginMesh(self, origin: Vector) -> MeshData:
mb = MeshBuilder()
mb.addCube(
width=self._origin_line_length,
height=self._origin_line_width,
depth=self._origin_line_width,
center=origin + Vector(self._origin_line_length / 2, 0, 0),
color=self._x_axis_color
)
mb.addCube(
width=self._origin_line_width,
height=self._origin_line_length,
depth=self._origin_line_width,
center=origin + Vector(0, self._origin_line_length / 2, 0),
color=self._y_axis_color
)
mb.addCube(
width=self._origin_line_width,
height=self._origin_line_width,
depth=self._origin_line_length,
center=origin - Vector(0, 0, self._origin_line_length / 2),
color=self._z_axis_color
)
return mb.build()
def _updateColors(self):
theme = self._application.getTheme()
if theme is None:
return
self._volume_outline_color = Color(*theme.getColor("volume_outline").getRgb())
self._x_axis_color = Color(*theme.getColor("x_axis").getRgb())
self._y_axis_color = Color(*theme.getColor("y_axis").getRgb())
self._z_axis_color = Color(*theme.getColor("z_axis").getRgb())
self._disallowed_area_color = Color(*theme.getColor("disallowed_area").getRgb())
self._error_area_color = Color(*theme.getColor("error_area").getRgb())
def _buildErrorMesh(self, min_w: float, max_w: float, min_h: float, max_h: float, min_d: float, max_d: float, disallowed_area_height: float) -> Optional[MeshData]:
if not self._error_areas:
return None
mb = MeshBuilder()
for error_area in self._error_areas:
color = self._error_area_color
points = error_area.getPoints()
first = Vector(self._clamp(points[0][0], min_w, max_w), disallowed_area_height,
self._clamp(points[0][1], min_d, max_d))
previous_point = Vector(self._clamp(points[0][0], min_w, max_w), disallowed_area_height,
self._clamp(points[0][1], min_d, max_d))
for point in points:
new_point = Vector(self._clamp(point[0], min_w, max_w), disallowed_area_height,
self._clamp(point[1], min_d, max_d))
mb.addFace(first, previous_point, new_point, color=color)
previous_point = new_point
return mb.build()
def _buildDisallowedAreaMesh(self, min_w: float, max_w: float, min_h: float, max_h: float, min_d: float, max_d: float, disallowed_area_height: float) -> Optional[MeshData]:
if not self._disallowed_areas:
return None
mb = MeshBuilder()
color = self._disallowed_area_color
for polygon in self._disallowed_areas:
points = polygon.getPoints()
if len(points) == 0:
continue
first = Vector(self._clamp(points[0][0], min_w, max_w), disallowed_area_height,
self._clamp(points[0][1], min_d, max_d))
previous_point = Vector(self._clamp(points[0][0], min_w, max_w), disallowed_area_height,
self._clamp(points[0][1], min_d, max_d))
for point in points:
new_point = Vector(self._clamp(point[0], min_w, max_w), disallowed_area_height,
self._clamp(point[1], min_d, max_d))
mb.addFace(first, previous_point, new_point, color=color)
previous_point = new_point
# Find the largest disallowed area to exclude it from the maximum scale bounds.
# This is a very nasty hack. This pretty much only works for UM machines.
# This disallowed area_size needs a -lot- of rework at some point in the future: TODO
if numpy.min(points[:,
1]) >= 0: # This filters out all areas that have points to the left of the centre. This is done to filter the skirt area.
size = abs(numpy.max(points[:, 1]) - numpy.min(points[:, 1]))
else:
size = 0
self._disallowed_area_size = max(size, self._disallowed_area_size)
return mb.build()
def _updateScaleFactor(self) -> None:
if not self._global_container_stack:
return
scale_xy = 100.0 / max(100.0, self._global_container_stack.getProperty("material_shrinkage_percentage_xy", "value"))
scale_z = 100.0 / max(100.0, self._global_container_stack.getProperty("material_shrinkage_percentage_z" , "value"))
self._scale_vector = Vector(scale_xy, scale_xy, scale_z)
def rebuild(self) -> None:
"""Recalculates the build volume & disallowed areas."""
if not self._width or not self._height or not self._depth:
return
if not self._engine_ready:
return
if not self._global_container_stack:
return
if not self._volume_outline_color:
self._updateColors()
min_w = -self._width / 2
max_w = self._width / 2
min_h = 0.0
max_h = self._height
min_d = -self._depth / 2
max_d = self._depth / 2
z_fight_distance = 0.2 # Distance between buildplate and disallowed area meshes to prevent z-fighting
self._grid_mesh = self._buildGridMesh(min_w, max_w, min_h, max_h, min_d, max_d, z_fight_distance)
self.setMeshData(self._buildMesh(min_w, max_w, min_h, max_h, min_d, max_d, z_fight_distance))
# Indication of the machine origin
if self._global_container_stack.getProperty("machine_center_is_zero", "value"):
origin = (Vector(min_w, min_h, min_d) + Vector(max_w, min_h, max_d)) / 2
else:
origin = Vector(min_w, min_h, max_d)
self._origin_mesh = self._buildOriginMesh(origin)
disallowed_area_height = 0.1
self._disallowed_area_size = 0.
self._disallowed_area_mesh = self._buildDisallowedAreaMesh(min_w, max_w, min_h, max_h, min_d, max_d, disallowed_area_height)
self._error_mesh = self._buildErrorMesh(min_w, max_w, min_h, max_h, min_d, max_d, disallowed_area_height)
self._updateScaleFactor()
self._volume_aabb = AxisAlignedBox(
minimum = Vector(min_w, min_h - 1.0, min_d),
maximum = Vector(max_w, max_h - self._raft_thickness - self._extra_z_clearance, max_d)
)
bed_adhesion_size = self.getEdgeDisallowedSize()
# As this works better for UM machines, we only add the disallowed_area_size for the z direction.
# This is probably wrong in all other cases. TODO!
# The +1 and -1 is added as there is always a bit of extra room required to work properly.
scale_to_max_bounds = AxisAlignedBox(
minimum = Vector(min_w + bed_adhesion_size + 1, min_h, min_d + self._disallowed_area_size - bed_adhesion_size + 1),
maximum = Vector(max_w - bed_adhesion_size - 1, max_h - self._raft_thickness - self._extra_z_clearance, max_d - self._disallowed_area_size + bed_adhesion_size - 1)
)
self._application.getController().getScene()._maximum_bounds = scale_to_max_bounds # type: ignore
self.updateNodeBoundaryCheck()
def getBoundingBox(self) -> Optional[AxisAlignedBox]:
return self._volume_aabb
def getRaftThickness(self) -> float:
return self._raft_thickness
def _updateRaftThickness(self) -> None:
if not self._global_container_stack:
return
old_raft_thickness = self._raft_thickness
if self._global_container_stack.extruderList:
# This might be called before the extruder stacks have initialised, in which case getting the adhesion_type fails
self._adhesion_type = self._global_container_stack.getProperty("adhesion_type", "value")
self._raft_thickness = 0.0
if self._adhesion_type == "raft":
self._raft_thickness = (
self._global_container_stack.getProperty("raft_base_thickness", "value") +
self._global_container_stack.getProperty("raft_interface_layers", "value") *
self._global_container_stack.getProperty("raft_interface_thickness", "value") +
self._global_container_stack.getProperty("raft_surface_layers", "value") *
self._global_container_stack.getProperty("raft_surface_thickness", "value") +
self._global_container_stack.getProperty("raft_airgap", "value") -
self._global_container_stack.getProperty("layer_0_z_overlap", "value"))
# Rounding errors do not matter, we check if raft_thickness has changed at all
if old_raft_thickness != self._raft_thickness:
self.setPosition(Vector(0, -self._raft_thickness, 0), SceneNode.TransformSpace.World)
self.raftThicknessChanged.emit()
def _calculateExtraZClearance(self, extruders: List["ContainerStack"]) -> float:
if not self._global_container_stack:
return 0
extra_z = 0.0
for extruder in extruders:
if extruder.getProperty("retraction_hop_enabled", "value"):
retraction_hop = extruder.getProperty("retraction_hop", "value")
if extra_z is None or retraction_hop > extra_z:
extra_z = retraction_hop
return extra_z
def _onStackChanged(self):
self._stack_change_timer.start()
def _onStackChangeTimerFinished(self) -> None:
"""Update the build volume visualization"""
if self._global_container_stack:
self._global_container_stack.propertyChanged.disconnect(self._onSettingPropertyChanged)
extruders = ExtruderManager.getInstance().getActiveExtruderStacks()
for extruder in extruders:
extruder.propertyChanged.disconnect(self._onSettingPropertyChanged)
self._global_container_stack = self._application.getGlobalContainerStack()
if self._global_container_stack:
self._global_container_stack.propertyChanged.connect(self._onSettingPropertyChanged)
extruders = ExtruderManager.getInstance().getActiveExtruderStacks()
for extruder in extruders:
extruder.propertyChanged.connect(self._onSettingPropertyChanged)
self._width = self._global_container_stack.getProperty("machine_width", "value")
machine_height = self._global_container_stack.getProperty("machine_height", "value")
if self._global_container_stack.getProperty("print_sequence", "value") == "one_at_a_time" and len(self._scene_objects) > 1:
new_height = min(self._global_container_stack.getProperty("gantry_height", "value") * self._scale_vector.z, machine_height)
if self._height > new_height:
self._build_volume_message.show()
elif self._height < new_height:
self._build_volume_message.hide()
self._height = new_height
else:
self._height = self._global_container_stack.getProperty("machine_height", "value")
self._build_volume_message.hide()
self._depth = self._global_container_stack.getProperty("machine_depth", "value")
self._shape = self._global_container_stack.getProperty("machine_shape", "value")
self._updateDisallowedAreas()
self._updateRaftThickness()
self._extra_z_clearance = self._calculateExtraZClearance(ExtruderManager.getInstance().getUsedExtruderStacks())
if self._engine_ready:
self.rebuild()
camera = Application.getInstance().getController().getCameraTool()
if camera:
diagonal = self.getDiagonalSize()
if diagonal > 1:
# You can zoom out up to 5 times the diagonal. This gives some space around the volume.
camera.setZoomRange(min = 0.1, max = diagonal * 5) # type: ignore
def _onEngineCreated(self) -> None:
self._engine_ready = True
self.rebuild()
def _onSettingChangeTimerFinished(self) -> None:
if not self._global_container_stack:
return
rebuild_me = False
update_disallowed_areas = False
update_raft_thickness = False
update_extra_z_clearance = True
for setting_key in self._changed_settings_since_last_rebuild:
if setting_key == "print_sequence":
machine_height = self._global_container_stack.getProperty("machine_height", "value")
if self._application.getGlobalContainerStack().getProperty("print_sequence", "value") == "one_at_a_time" and len(self._scene_objects) > 1:
new_height = min(
self._global_container_stack.getProperty("gantry_height", "value") * self._scale_vector.z,
machine_height)
if self._height > new_height:
self._build_volume_message.show()
elif self._height < new_height:
self._build_volume_message.hide()
self._height = new_height
else:
self._height = self._global_container_stack.getProperty("machine_height", "value") * self._scale_vector.z
self._build_volume_message.hide()
update_disallowed_areas = True
# sometimes the machine size or shape settings are adjusted on the active machine, we should reflect this
if setting_key in self._machine_settings or setting_key in self._material_size_settings:
self._updateMachineSizeProperties()
update_extra_z_clearance = True
update_disallowed_areas = True
if setting_key in self._disallowed_area_settings:
update_disallowed_areas = True
if setting_key in self._raft_settings:
update_raft_thickness = True
if setting_key in self._extra_z_settings:
update_extra_z_clearance = True
if setting_key in self._limit_to_extruder_settings:
update_disallowed_areas = True
rebuild_me = update_extra_z_clearance or update_disallowed_areas or update_raft_thickness
# We only want to update all of them once.
if update_disallowed_areas:
self._updateDisallowedAreas()
if update_raft_thickness:
self._updateRaftThickness()
if update_extra_z_clearance:
self._extra_z_clearance = self._calculateExtraZClearance(ExtruderManager.getInstance().getUsedExtruderStacks())
if rebuild_me:
self.rebuild()
# We just did a rebuild, reset the list.
self._changed_settings_since_last_rebuild = []
def _onSettingPropertyChanged(self, setting_key: str, property_name: str) -> None:
if property_name != "value":
return
if setting_key not in self._changed_settings_since_last_rebuild:
self._changed_settings_since_last_rebuild.append(setting_key)
self._setting_change_timer.start()
def hasErrors(self) -> bool:
return self._has_errors
def _updateMachineSizeProperties(self) -> None:
if not self._global_container_stack:
return
self._updateScaleFactor()
self._height = self._global_container_stack.getProperty("machine_height", "value") * self._scale_vector.z
self._width = self._global_container_stack.getProperty("machine_width", "value")
self._depth = self._global_container_stack.getProperty("machine_depth", "value")
self._shape = self._global_container_stack.getProperty("machine_shape", "value")
def _updateDisallowedAreasAndRebuild(self):
"""Calls :py:meth:`cura.BuildVolume._updateDisallowedAreas` and makes sure the changes appear in the scene.
This is required for a signal to trigger the update in one go. The
:py:meth:`cura.BuildVolume._updateDisallowedAreas` method itself shouldn't call
:py:meth:`cura.BuildVolume.rebuild`, since there may be other changes before it needs to be rebuilt,
which would hit performance.
"""
self._updateDisallowedAreas()
self._updateRaftThickness()
self._extra_z_clearance = self._calculateExtraZClearance(ExtruderManager.getInstance().getUsedExtruderStacks())
self.rebuild()
def _updateDisallowedAreas(self) -> None:
if not self._global_container_stack:
return
self._error_areas = []
used_extruders = ExtruderManager.getInstance().getUsedExtruderStacks()
self._edge_disallowed_size = None # Force a recalculation
disallowed_border_size = self.getEdgeDisallowedSize()
result_areas = self._computeDisallowedAreasStatic(disallowed_border_size, used_extruders) # Normal machine disallowed areas can always be added.
prime_areas = self._computeDisallowedAreasPrimeBlob(disallowed_border_size, used_extruders)
result_areas_no_brim = self._computeDisallowedAreasStatic(0, used_extruders) # Where the priming is not allowed to happen. This is not added to the result, just for collision checking.
# Check if prime positions intersect with disallowed areas.
for extruder in used_extruders:
extruder_id = extruder.getId()
result_areas[extruder_id].extend(prime_areas[extruder_id])
result_areas_no_brim[extruder_id].extend(prime_areas[extruder_id])
nozzle_disallowed_areas = extruder.getProperty("nozzle_disallowed_areas", "value")
for area in nozzle_disallowed_areas:
polygon = Polygon(numpy.array(area, numpy.float32))
polygon_disallowed_border = polygon.getMinkowskiHull(Polygon.approximatedCircle(disallowed_border_size))
result_areas[extruder_id].append(polygon_disallowed_border) # Don't perform the offset on these.
result_areas_no_brim[extruder_id].append(polygon) # No brim
# Add prime tower location as disallowed area.
if len([x for x in used_extruders if x.isEnabled]) > 1: # No prime tower if only one extruder is enabled
prime_tower_collision = False
prime_tower_areas = self._computeDisallowedAreasPrinted(used_extruders)
for extruder_id in prime_tower_areas:
for area_index, prime_tower_area in enumerate(prime_tower_areas[extruder_id]):
for area in result_areas_no_brim[extruder_id]:
if prime_tower_area.intersectsPolygon(area) is not None:
prime_tower_collision = True
break
if prime_tower_collision: # Already found a collision.
break
if not prime_tower_collision:
result_areas[extruder_id].extend(prime_tower_areas[extruder_id])
result_areas_no_brim[extruder_id].extend(prime_tower_areas[extruder_id])
else:
self._error_areas.extend(prime_tower_areas[extruder_id])
self._has_errors = len(self._error_areas) > 0
self._disallowed_areas = []
for extruder_id in result_areas:
self._disallowed_areas.extend(result_areas[extruder_id])
self._disallowed_areas_no_brim = []
for extruder_id in result_areas_no_brim:
self._disallowed_areas_no_brim.extend(result_areas_no_brim[extruder_id])
def _computeDisallowedAreasPrinted(self, used_extruders):
"""Computes the disallowed areas for objects that are printed with print features.
This means that the brim, travel avoidance and such will be applied to these features.
:return: A dictionary with for each used extruder ID the disallowed areas where that extruder may not print.
"""
result = {}
skirt_brim_extruder: ExtruderStack = None
skirt_brim_extruder_nr = self._global_container_stack.getProperty("skirt_brim_extruder_nr", "value")
for extruder in used_extruders:
if skirt_brim_extruder_nr == -1:
skirt_brim_extruder = used_extruders[0] # The prime tower brim is always printed with the first extruder
elif int(extruder.getProperty("extruder_nr", "value")) == int(skirt_brim_extruder_nr):
skirt_brim_extruder = extruder
result[extruder.getId()] = []
# Currently, the only normally printed object is the prime tower.
if self._global_container_stack.getProperty("prime_tower_enable", "value"):
prime_tower_size = self._global_container_stack.getProperty("prime_tower_size", "value")
machine_width = self._global_container_stack.getProperty("machine_width", "value")
machine_depth = self._global_container_stack.getProperty("machine_depth", "value")
prime_tower_x = self._global_container_stack.getProperty("prime_tower_position_x", "value")
prime_tower_y = - self._global_container_stack.getProperty("prime_tower_position_y", "value")
prime_tower_brim_enable = self._global_container_stack.getProperty("prime_tower_brim_enable", "value")
prime_tower_base_size = self._global_container_stack.getProperty("prime_tower_base_size", "value")
prime_tower_base_height = self._global_container_stack.getProperty("prime_tower_base_height", "value")
adhesion_type = self._global_container_stack.getProperty("adhesion_type", "value")
if not self._global_container_stack.getProperty("machine_center_is_zero", "value"):
prime_tower_x = prime_tower_x - machine_width / 2 #Offset by half machine_width and _depth to put the origin in the front-left.
prime_tower_y = prime_tower_y + machine_depth / 2
radius = prime_tower_size / 2
delta_x = -radius
delta_y = -radius
if prime_tower_base_size > 0 and ((prime_tower_brim_enable and prime_tower_base_height > 0) or adhesion_type == "raft"):
radius += prime_tower_base_size
prime_tower_area = Polygon.approximatedCircle(radius, num_segments = 32)
prime_tower_area = prime_tower_area.translate(prime_tower_x + delta_x, prime_tower_y + delta_y)
prime_tower_area = prime_tower_area.getMinkowskiHull(Polygon.approximatedCircle(0))
for extruder in used_extruders:
result[extruder.getId()].append(prime_tower_area) #The prime tower location is the same for each extruder, regardless of offset.
return result
def _computeDisallowedAreasPrimeBlob(self, border_size: float, used_extruders: List["ExtruderStack"]) -> Dict[str, List[Polygon]]:
"""Computes the disallowed areas for the prime blobs.
These are special because they are not subject to things like brim or travel avoidance. They do get a dilute
with the border size though because they may not intersect with brims and such of other objects.
:param border_size: The size with which to offset the disallowed areas due to skirt, brim, travel avoid distance
, etc.
:param used_extruders: The extruder stacks to generate disallowed areas for.
:return: A dictionary with for each used extruder ID the prime areas.
"""
result = {} # type: Dict[str, List[Polygon]]
if not self._global_container_stack:
return result
machine_width = self._global_container_stack.getProperty("machine_width", "value")
machine_depth = self._global_container_stack.getProperty("machine_depth", "value")
for extruder in used_extruders:
prime_blob_enabled = extruder.getProperty("prime_blob_enable", "value")
prime_x = extruder.getProperty("extruder_prime_pos_x", "value")
prime_y = -extruder.getProperty("extruder_prime_pos_y", "value")
# Ignore extruder prime position if it is not set or if blob is disabled
if (prime_x == 0 and prime_y == 0) or not prime_blob_enabled:
result[extruder.getId()] = []
continue
if not self._global_container_stack.getProperty("machine_center_is_zero", "value"):
prime_x = prime_x - machine_width / 2 # Offset by half machine_width and _depth to put the origin in the front-left.
prime_y = prime_y + machine_depth / 2
prime_polygon = Polygon.approximatedCircle(PRIME_CLEARANCE)
prime_polygon = prime_polygon.getMinkowskiHull(Polygon.approximatedCircle(border_size))
prime_polygon = prime_polygon.translate(prime_x, prime_y)
result[extruder.getId()] = [prime_polygon]
return result
def _computeDisallowedAreasStatic(self, border_size:float, used_extruders: List["ExtruderStack"]) -> Dict[str, List[Polygon]]:
"""Computes the disallowed areas that are statically placed in the machine.
It computes different disallowed areas depending on the offset of the extruder. The resulting dictionary will
therefore have an entry for each extruder that is used.
:param border_size: The size with which to offset the disallowed areas due to skirt, brim, travel avoid distance
, etc.
:param used_extruders: The extruder stacks to generate disallowed areas for.
:return: A dictionary with for each used extruder ID the disallowed areas where that extruder may not print.
"""
# Convert disallowed areas to polygons and dilate them.
machine_disallowed_polygons = []
if self._global_container_stack is None:
return {}
for area in self._global_container_stack.getProperty("machine_disallowed_areas", "value"):
if len(area) == 0:
continue # Numpy doesn't deal well with 0-length arrays, since it can't determine the dimensionality of them.
polygon = Polygon(numpy.array(area, numpy.float32))
polygon = polygon.getMinkowskiHull(Polygon.approximatedCircle(border_size))
machine_disallowed_polygons.append(polygon)
# For certain machines we don't need to compute disallowed areas for each nozzle.
# So we check here and only do the nozzle offsetting if needed.
nozzle_offsetting_for_disallowed_areas = self._global_container_stack.getMetaDataEntry(
"nozzle_offsetting_for_disallowed_areas", True)
result = {} # type: Dict[str, List[Polygon]]
for extruder in used_extruders:
extruder_id = extruder.getId()
offset_x = extruder.getProperty("machine_nozzle_offset_x", "value")
if offset_x is None:
offset_x = 0
offset_y = extruder.getProperty("machine_nozzle_offset_y", "value")
if offset_y is None:
offset_y = 0
offset_y = -offset_y # Y direction of g-code is the inverse of Y direction of Cura's scene space.
result[extruder_id] = []
for polygon in machine_disallowed_polygons:
result[extruder_id].append(polygon.translate(offset_x, offset_y)) # Compensate for the nozzle offset of this extruder.
# Add the border around the edge of the build volume.
left_unreachable_border = 0
right_unreachable_border = 0
top_unreachable_border = 0
bottom_unreachable_border = 0
# Only do nozzle offsetting if needed
if nozzle_offsetting_for_disallowed_areas:
# The build volume is defined as the union of the area that all extruders can reach, so we need to know
# the relative offset to all extruders.
for other_extruder in ExtruderManager.getInstance().getActiveExtruderStacks():
other_offset_x = other_extruder.getProperty("machine_nozzle_offset_x", "value")
if other_offset_x is None:
other_offset_x = 0
other_offset_y = other_extruder.getProperty("machine_nozzle_offset_y", "value")
if other_offset_y is None:
other_offset_y = 0
other_offset_y = -other_offset_y
left_unreachable_border = min(left_unreachable_border, other_offset_x - offset_x)
right_unreachable_border = max(right_unreachable_border, other_offset_x - offset_x)
top_unreachable_border = min(top_unreachable_border, other_offset_y - offset_y)
bottom_unreachable_border = max(bottom_unreachable_border, other_offset_y - offset_y)
half_machine_width = self._global_container_stack.getProperty("machine_width", "value") / 2
half_machine_depth = self._global_container_stack.getProperty("machine_depth", "value") / 2
# We need at a minimum a very small border around the edge so that models can't go off the build plate
border_size = max(border_size, 0.1)
if self._shape != "elliptic":
if border_size - left_unreachable_border > 0: