mirror of
https://git.mirrors.martin98.com/https://github.com/Ultimaker/Cura
synced 2025-05-14 11:48:02 +08:00
51c4e277ae
This might have made sense when convex hulls were not recalculated on transformation changes but as it is now, we want to be able to specify 0.5 as a valid point for a convex hull. Contributes to CURA-435
89 lines
4.4 KiB
Python
89 lines
4.4 KiB
Python
# Copyright (c) 2015 Ultimaker B.V.
|
|
# Cura is released under the terms of the AGPLv3 or higher.
|
|
|
|
from UM.Job import Job
|
|
from UM.Application import Application
|
|
from UM.Math.Polygon import Polygon
|
|
|
|
import numpy
|
|
import copy
|
|
from . import ConvexHullNode
|
|
|
|
class ConvexHullJob(Job):
|
|
def __init__(self, node):
|
|
super().__init__()
|
|
|
|
self._node = node
|
|
|
|
def run(self):
|
|
if not self._node:
|
|
return
|
|
## If the scene node is a group, use the hull of the children to calculate its hull.
|
|
if self._node.callDecoration("isGroup"):
|
|
hull = Polygon(numpy.zeros((0, 2), dtype=numpy.int32))
|
|
for child in self._node.getChildren():
|
|
child_hull = child.callDecoration("getConvexHull")
|
|
if child_hull:
|
|
hull.setPoints(numpy.append(hull.getPoints(), child_hull.getPoints(), axis = 0))
|
|
|
|
if hull.getPoints().size < 3:
|
|
self._node.callDecoration("setConvexHull", None)
|
|
self._node.callDecoration("setConvexHullJob", None)
|
|
return
|
|
|
|
Job.yieldThread()
|
|
|
|
else:
|
|
if not self._node.getMeshData():
|
|
return
|
|
mesh = self._node.getMeshData()
|
|
vertex_data = mesh.getTransformed(self._node.getWorldTransformation()).getVertices()
|
|
# Don't use data below 0. TODO; We need a better check for this as this gives poor results for meshes with long edges.
|
|
vertex_data = vertex_data[vertex_data[:,1] >= 0]
|
|
hull = Polygon(vertex_data[:, [0, 2]])
|
|
|
|
# First, calculate the normal convex hull around the points
|
|
hull = hull.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.
|
|
hull = hull.getMinkowskiHull(Polygon(numpy.array([[-0.5, -0.5], [-0.5, 0.5], [0.5, 0.5], [0.5, -0.5]], numpy.float32)))
|
|
|
|
profile = Application.getInstance().getMachineManager().getWorkingProfile()
|
|
if profile:
|
|
if profile.getSettingValue("print_sequence") == "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
|
|
self._node.callDecoration("setConvexHullBoundary", copy.deepcopy(hull))
|
|
head_and_fans = Polygon(numpy.array(profile.getSettingValue("machine_head_with_fans_polygon"), numpy.float32))
|
|
# Full head hull is used to actually check the order.
|
|
full_head_hull = hull.getMinkowskiHull(head_and_fans)
|
|
self._node.callDecoration("setConvexHullHeadFull", full_head_hull)
|
|
mirrored = copy.deepcopy(head_and_fans)
|
|
mirrored.mirror([0, 0], [0, 1]) #Mirror horizontally.
|
|
mirrored.mirror([0, 0], [1, 0]) #Mirror vertically.
|
|
head_and_fans = head_and_fans.intersectionConvexHulls(mirrored)
|
|
# Min head hull is used for the push free
|
|
min_head_hull = hull.getMinkowskiHull(head_and_fans)
|
|
self._node.callDecoration("setConvexHullHead", min_head_hull)
|
|
hull = hull.getMinkowskiHull(Polygon(numpy.array(profile.getSettingValue("machine_head_polygon"),numpy.float32)))
|
|
else:
|
|
self._node.callDecoration("setConvexHullHead", None)
|
|
if self._node.getParent() is None: #Node was already deleted before job is done.
|
|
self._node.callDecoration("setConvexHullNode",None)
|
|
self._node.callDecoration("setConvexHull", None)
|
|
self._node.callDecoration("setConvexHullJob", None)
|
|
return
|
|
hull_node = ConvexHullNode.ConvexHullNode(self._node, hull, Application.getInstance().getController().getScene().getRoot())
|
|
self._node.callDecoration("setConvexHullNode", hull_node)
|
|
self._node.callDecoration("setConvexHull", hull)
|
|
self._node.callDecoration("setConvexHullJob", None)
|
|
|
|
if self._node.getParent() and self._node.getParent().callDecoration("isGroup"):
|
|
job = self._node.getParent().callDecoration("getConvexHullJob")
|
|
if job:
|
|
job.cancel()
|
|
self._node.getParent().callDecoration("setConvexHull", None)
|
|
hull_node = self._node.getParent().callDecoration("getConvexHullNode")
|
|
if hull_node:
|
|
hull_node.setParent(None)
|