mirror of
https://git.mirrors.martin98.com/https://github.com/Ultimaker/Cura
synced 2025-04-22 05:39:37 +08:00
331 lines
16 KiB
Python
331 lines
16 KiB
Python
# Copyright (c) 2016 Ultimaker B.V.
|
|
# Cura is released under the terms of the AGPLv3 or higher.
|
|
|
|
from UM.Scene.SceneNodeDecorator import SceneNodeDecorator
|
|
from UM.Application import Application
|
|
from cura.Settings.ExtruderManager import ExtruderManager
|
|
from UM.Math.Polygon import Polygon
|
|
from . import ConvexHullNode
|
|
|
|
import UM.Settings.ContainerRegistry
|
|
|
|
import numpy
|
|
|
|
## The convex hull decorator is a scene node decorator that adds the convex hull functionality to a scene node.
|
|
# If a scene node has a convex hull decorator, it will have a shadow in which other objects can not be printed.
|
|
class ConvexHullDecorator(SceneNodeDecorator):
|
|
def __init__(self):
|
|
super().__init__()
|
|
|
|
self._convex_hull_node = None
|
|
self._init2DConvexHullCache()
|
|
|
|
self._global_stack = None
|
|
|
|
self._raft_thickness = 0.0
|
|
# For raft thickness, DRY
|
|
self._build_volume = Application.getInstance().getBuildVolume()
|
|
self._build_volume.raftThicknessChanged.connect(self._onChanged)
|
|
|
|
Application.getInstance().globalContainerStackChanged.connect(self._onGlobalStackChanged)
|
|
Application.getInstance().getController().toolOperationStarted.connect(self._onChanged)
|
|
Application.getInstance().getController().toolOperationStopped.connect(self._onChanged)
|
|
|
|
self._onGlobalStackChanged()
|
|
|
|
def setNode(self, node):
|
|
previous_node = self._node
|
|
# Disconnect from previous node signals
|
|
if previous_node is not None and node is not previous_node:
|
|
previous_node.transformationChanged.disconnect(self._onChanged)
|
|
previous_node.parentChanged.disconnect(self._onChanged)
|
|
|
|
super().setNode(node)
|
|
|
|
self._node.transformationChanged.connect(self._onChanged)
|
|
self._node.parentChanged.connect(self._onChanged)
|
|
|
|
self._onChanged()
|
|
|
|
## Force that a new (empty) object is created upon copy.
|
|
def __deepcopy__(self, memo):
|
|
return ConvexHullDecorator()
|
|
|
|
## Get the unmodified 2D projected convex hull of the node
|
|
def getConvexHull(self):
|
|
if self._node is None:
|
|
return None
|
|
|
|
hull = self._compute2DConvexHull()
|
|
|
|
if self._global_stack and self._node:
|
|
if self._global_stack.getProperty("print_sequence", "value") == "one_at_a_time" and not self._node.getParent().callDecoration("isGroup"):
|
|
hull = hull.getMinkowskiHull(Polygon(numpy.array(self._global_stack.getProperty("machine_head_polygon", "value"), numpy.float32)))
|
|
hull = self._add2DAdhesionMargin(hull)
|
|
return hull
|
|
|
|
## Get the convex hull of the node with the full head size
|
|
def getConvexHullHeadFull(self):
|
|
if self._node is None:
|
|
return None
|
|
|
|
return self._compute2DConvexHeadFull()
|
|
|
|
## Get convex hull of the object + head size
|
|
# In case of printing all at once this is the same as the convex hull.
|
|
# For one at the time this is area with intersection of mirrored head
|
|
def getConvexHullHead(self):
|
|
if self._node is None:
|
|
return None
|
|
|
|
if self._global_stack:
|
|
if self._global_stack.getProperty("print_sequence", "value") == "one_at_a_time" and not self._node.getParent().callDecoration("isGroup"):
|
|
head_with_fans = self._compute2DConvexHeadMin()
|
|
head_with_fans_with_adhesion_margin = self._add2DAdhesionMargin(head_with_fans)
|
|
return head_with_fans_with_adhesion_margin
|
|
return None
|
|
|
|
## Get convex hull of the node
|
|
# In case of printing all at once this is the same as the convex hull.
|
|
# For one at the time this is the area without the head.
|
|
def getConvexHullBoundary(self):
|
|
if self._node is None:
|
|
return None
|
|
|
|
if self._global_stack:
|
|
if self._global_stack.getProperty("print_sequence", "value") == "one_at_a_time" and not self._node.getParent().callDecoration("isGroup"):
|
|
|
|
# Printing one at a time and it's not an object in a group
|
|
return self._compute2DConvexHull()
|
|
return None
|
|
|
|
def recomputeConvexHull(self):
|
|
controller = Application.getInstance().getController()
|
|
root = controller.getScene().getRoot()
|
|
if self._node is None or controller.isToolOperationActive() or not self.__isDescendant(root, self._node):
|
|
if self._convex_hull_node:
|
|
self._convex_hull_node.setParent(None)
|
|
self._convex_hull_node = None
|
|
return
|
|
|
|
convex_hull = self.getConvexHull()
|
|
if self._convex_hull_node:
|
|
self._convex_hull_node.setParent(None)
|
|
hull_node = ConvexHullNode.ConvexHullNode(self._node, convex_hull, self._raft_thickness, root)
|
|
self._convex_hull_node = hull_node
|
|
|
|
def _onSettingValueChanged(self, key, property_name):
|
|
if key in self._affected_settings and property_name == "value":
|
|
self._onChanged()
|
|
|
|
def _init2DConvexHullCache(self):
|
|
# Cache for the group code path in _compute2DConvexHull()
|
|
self._2d_convex_hull_group_child_polygon = None
|
|
self._2d_convex_hull_group_result = None
|
|
|
|
# Cache for the mesh code path in _compute2DConvexHull()
|
|
self._2d_convex_hull_mesh = None
|
|
self._2d_convex_hull_mesh_world_transform = None
|
|
self._2d_convex_hull_mesh_result = None
|
|
|
|
def _compute2DConvexHull(self):
|
|
if self._node.callDecoration("isGroup"):
|
|
points = numpy.zeros((0, 2), dtype=numpy.int32)
|
|
for child in self._node.getChildren():
|
|
child_hull = child.callDecoration("_compute2DConvexHull")
|
|
if child_hull:
|
|
points = numpy.append(points, child_hull.getPoints(), axis = 0)
|
|
|
|
if points.size < 3:
|
|
return None
|
|
child_polygon = Polygon(points)
|
|
|
|
# Check the cache
|
|
if child_polygon == self._2d_convex_hull_group_child_polygon:
|
|
return self._2d_convex_hull_group_result
|
|
|
|
# First, calculate the normal convex hull around the points
|
|
convex_hull = child_polygon.getConvexHull()
|
|
|
|
# Then, do a Minkowski hull with a simple 1x1 quad to outset and round the normal convex hull.
|
|
# This is done because of rounding errors.
|
|
rounded_hull = self._roundHull(convex_hull)
|
|
|
|
# Store the result in the cache
|
|
self._2d_convex_hull_group_child_polygon = child_polygon
|
|
self._2d_convex_hull_group_result = rounded_hull
|
|
|
|
return rounded_hull
|
|
|
|
else:
|
|
rounded_hull = None
|
|
mesh = None
|
|
world_transform = None
|
|
if self._node.getMeshData():
|
|
mesh = self._node.getMeshData()
|
|
world_transform = self._node.getWorldTransformation()
|
|
|
|
# Check the cache
|
|
if mesh is self._2d_convex_hull_mesh and world_transform == self._2d_convex_hull_mesh_world_transform:
|
|
return self._2d_convex_hull_mesh_result
|
|
|
|
vertex_data = mesh.getConvexHullTransformedVertices(world_transform)
|
|
# Don't use data below 0.
|
|
# TODO; We need a better check for this as this gives poor results for meshes with long edges.
|
|
# Do not throw away vertices: the convex hull may be too small and objects can collide.
|
|
# vertex_data = vertex_data[vertex_data[:,1] >= -0.01]
|
|
|
|
if len(vertex_data) >= 4:
|
|
# Round the vertex data to 1/10th of a mm, then remove all duplicate vertices
|
|
# This is done to greatly speed up further convex hull calculations as the convex hull
|
|
# becomes much less complex when dealing with highly detailed models.
|
|
vertex_data = numpy.round(vertex_data, 1)
|
|
|
|
vertex_data = vertex_data[:, [0, 2]] # Drop the Y components to project to 2D.
|
|
|
|
# Grab the set of unique points.
|
|
#
|
|
# This basically finds the unique rows in the array by treating them as opaque groups of bytes
|
|
# which are as long as the 2 float64s in each row, and giving this view to numpy.unique() to munch.
|
|
# See http://stackoverflow.com/questions/16970982/find-unique-rows-in-numpy-array
|
|
vertex_byte_view = numpy.ascontiguousarray(vertex_data).view(
|
|
numpy.dtype((numpy.void, vertex_data.dtype.itemsize * vertex_data.shape[1])))
|
|
_, idx = numpy.unique(vertex_byte_view, return_index=True)
|
|
vertex_data = vertex_data[idx] # Select the unique rows by index.
|
|
|
|
hull = Polygon(vertex_data)
|
|
|
|
if len(vertex_data) >= 4:
|
|
# First, calculate the normal convex hull around the points
|
|
convex_hull = hull.getConvexHull()
|
|
|
|
#Then, offset the convex hull with the horizontal expansion value, since that is always added to the mesh.
|
|
#Use a minimum of 0.5mm to outset and round the normal convex hull if there is no horizontal expansion, because of edge cases.
|
|
horizontal_expansion = max(0.5, self._getSettingProperty("xy_offset", "value"))
|
|
expansion_polygon = Polygon(numpy.array([
|
|
[-horizontal_expansion, -horizontal_expansion],
|
|
[-horizontal_expansion, horizontal_expansion],
|
|
[horizontal_expansion, horizontal_expansion],
|
|
[horizontal_expansion, -horizontal_expansion]
|
|
], numpy.float32))
|
|
rounded_hull = convex_hull.getMinkowskiHull(expansion_polygon)
|
|
|
|
# Store the result in the cache
|
|
self._2d_convex_hull_mesh = mesh
|
|
self._2d_convex_hull_mesh_world_transform = world_transform
|
|
self._2d_convex_hull_mesh_result = rounded_hull
|
|
|
|
return rounded_hull
|
|
|
|
def _getHeadAndFans(self):
|
|
return Polygon(numpy.array(self._global_stack.getProperty("machine_head_with_fans_polygon", "value"), numpy.float32))
|
|
|
|
def _compute2DConvexHeadFull(self):
|
|
return self._compute2DConvexHull().getMinkowskiHull(self._getHeadAndFans())
|
|
|
|
def _compute2DConvexHeadMin(self):
|
|
headAndFans = self._getHeadAndFans()
|
|
mirrored = headAndFans.mirror([0, 0], [0, 1]).mirror([0, 0], [1, 0]) # Mirror horizontally & vertically.
|
|
head_and_fans = self._getHeadAndFans().intersectionConvexHulls(mirrored)
|
|
|
|
# Min head hull is used for the push free
|
|
min_head_hull = self._compute2DConvexHull().getMinkowskiHull(head_and_fans)
|
|
return min_head_hull
|
|
|
|
## Compensate given 2D polygon with adhesion margin
|
|
# \return 2D polygon with added margin
|
|
def _add2DAdhesionMargin(self, poly):
|
|
# Compensate for raft/skirt/brim
|
|
# Add extra margin depending on adhesion type
|
|
adhesion_type = self._global_stack.getProperty("adhesion_type", "value")
|
|
|
|
if adhesion_type == "raft":
|
|
extra_margin = max(0, self._getSettingProperty("raft_margin", "value"))
|
|
elif adhesion_type == "brim":
|
|
extra_margin = max(0, self._getSettingProperty("brim_line_count", "value") * self._getSettingProperty("skirt_brim_line_width", "value"))
|
|
elif adhesion_type == "skirt":
|
|
extra_margin = max(
|
|
0, self._getSettingProperty("skirt_gap", "value") +
|
|
self._getSettingProperty("skirt_line_count", "value") * self._getSettingProperty("skirt_brim_line_width", "value"))
|
|
else:
|
|
raise Exception("Unknown bed adhesion type. Did you forget to update the convex hull calculations for your new bed adhesion type?")
|
|
|
|
# adjust head_and_fans with extra margin
|
|
if extra_margin > 0:
|
|
# In Cura 2.2+, there is a function to create this circle-like polygon.
|
|
extra_margin_polygon = Polygon(numpy.array([
|
|
[-extra_margin, 0],
|
|
[-extra_margin * 0.707, extra_margin * 0.707],
|
|
[0, extra_margin],
|
|
[extra_margin * 0.707, extra_margin * 0.707],
|
|
[extra_margin, 0],
|
|
[extra_margin * 0.707, -extra_margin * 0.707],
|
|
[0, -extra_margin],
|
|
[-extra_margin * 0.707, -extra_margin * 0.707]
|
|
], numpy.float32))
|
|
|
|
poly = poly.getMinkowskiHull(extra_margin_polygon)
|
|
return poly
|
|
|
|
def _roundHull(self, convex_hull):
|
|
return convex_hull.getMinkowskiHull(Polygon(numpy.array([[-0.5, -0.5], [-0.5, 0.5], [0.5, 0.5], [0.5, -0.5]], numpy.float32)))
|
|
|
|
def _onChanged(self, *args):
|
|
self._raft_thickness = self._build_volume.getRaftThickness()
|
|
self.recomputeConvexHull()
|
|
|
|
def _onGlobalStackChanged(self):
|
|
if self._global_stack:
|
|
self._global_stack.propertyChanged.disconnect(self._onSettingValueChanged)
|
|
self._global_stack.containersChanged.disconnect(self._onChanged)
|
|
extruders = ExtruderManager.getInstance().getMachineExtruders(self._global_stack.getId())
|
|
for extruder in extruders:
|
|
extruder.propertyChanged.disconnect(self._onSettingValueChanged)
|
|
|
|
self._global_stack = Application.getInstance().getGlobalContainerStack()
|
|
|
|
if self._global_stack:
|
|
self._global_stack.propertyChanged.connect(self._onSettingValueChanged)
|
|
self._global_stack.containersChanged.connect(self._onChanged)
|
|
|
|
extruders = ExtruderManager.getInstance().getMachineExtruders(self._global_stack.getId())
|
|
for extruder in extruders:
|
|
extruder.propertyChanged.connect(self._onSettingValueChanged)
|
|
|
|
self._onChanged()
|
|
|
|
## Private convenience function to get a setting from the correct extruder (as defined by limit_to_extruder property).
|
|
def _getSettingProperty(self, setting_key, property="value"):
|
|
per_mesh_stack = self._node.callDecoration("getStack")
|
|
if per_mesh_stack:
|
|
return per_mesh_stack.getProperty(setting_key, property)
|
|
|
|
multi_extrusion = self._global_stack.getProperty("machine_extruder_count", "value") > 1
|
|
if not multi_extrusion:
|
|
return self._global_stack.getProperty(setting_key, property)
|
|
|
|
extruder_index = self._global_stack.getProperty(setting_key, "limit_to_extruder")
|
|
if extruder_index == "-1": # If extruder index is -1 use the object's extruder instead.
|
|
extruder_stack_id = self._node.callDecoration("getActiveExtruder")
|
|
if not extruder_stack_id: #Decoration doesn't exist.
|
|
extruder_stack_id = ExtruderManager.getInstance().extruderIds["0"]
|
|
extruder_stack = UM.Settings.ContainerRegistry.getInstance().findContainerStacks(id = extruder_stack_id)[0]
|
|
return extruder_stack.getProperty(setting_key, property)
|
|
else: #Limit_to_extruder is set. Use that one.
|
|
extruder_stack_id = ExtruderManager.getInstance().extruderIds[str(extruder_index)]
|
|
stack = UM.Settings.ContainerRegistry.getInstance().findContainerStacks(id = extruder_stack_id)[0]
|
|
return stack.getProperty(setting_key, property)
|
|
|
|
## Returns true if node is a descendent or the same as the root node.
|
|
def __isDescendant(self, root, node):
|
|
if node is None:
|
|
return False
|
|
if root is node:
|
|
return True
|
|
return self.__isDescendant(root, node.getParent())
|
|
|
|
_affected_settings = [
|
|
"adhesion_type", "raft_base_thickness", "raft_interface_thickness", "raft_surface_layers",
|
|
"raft_surface_thickness", "raft_airgap", "raft_margin", "print_sequence",
|
|
"skirt_gap", "skirt_line_count", "skirt_brim_line_width", "skirt_distance", "brim_line_count"]
|