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Compute centre of current mesh group

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This is either the centre of the bounding box around all printable nodes in the scene, or the centre of the bounding box of the most-ancestral node that is not yet the scene root itself in one-at-a-time mode.

Contributes to issue CURA-7118.
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Ghostkeeper 2020-09-02 02:43:43 +02:00
parent bc0ac0f2a0
commit f613a54b79
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1 changed files with 23 additions and 5 deletions
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28
cura/Scene/ConvexHullDecorator.py
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@ -1,4 +1,4 @@
# Copyright (c) 2016 Ultimaker B.V. # Copyright (c) 2020 Ultimaker B.V.
# Cura is released under the terms of the LGPLv3 or higher. # Cura is released under the terms of the LGPLv3 or higher.
from PyQt5.QtCore import QTimer from PyQt5.QtCore import QTimer
@ -381,11 +381,29 @@ class ConvexHullDecorator(SceneNodeDecorator):
""" """
scale_factor = self._global_stack.getProperty("material_shrinkage_percentage", "value") / 100.0 scale_factor = self._global_stack.getProperty("material_shrinkage_percentage", "value") / 100.0
if scale_factor != 1.0:
center = self.getNode().getBoundingBox().center
result = convex_hull.scale(scale_factor, [center.x, center.z]) # Yes, use Z instead of Y. Mixed conventions there with how the OpenGL coordinates are transmitted.
else:
result = convex_hull result = convex_hull
if scale_factor != 1.0:
center = None
if self._global_stack.getProperty("print_sequence", "value") == "one_at_a_time":
# Find the root node that's placed in the scene; the root of the mesh group.
ancestor = self.getNode()
while ancestor.getParent() != self._root:
ancestor = ancestor.getParent()
center = ancestor.getBoundingBox().center
else:
# Find the bounding box of the entire scene, which is all one mesh group then.
aabb = None
for printed_node in self._root.getChildren():
if not printed_node.callDecoration("isSliceable"):
continue # Not a printed node.
if aabb is None:
aabb = printed_node.getBoundingBox()
else:
aabb = aabb + printed_node.getBoundingBox()
if aabb:
center = aabb.center
if center:
result = convex_hull.scale(scale_factor, [center.x, center.z]) # Yes, use Z instead of Y. Mixed conventions there with how the OpenGL coordinates are transmitted.
horizontal_expansion = max( horizontal_expansion = max(
self._getSettingProperty("xy_offset", "value"), self._getSettingProperty("xy_offset", "value"),