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Move the combined object to the center of the group after a merge.

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Contributes to CURA-2160 "Merging objects results in group jumping off the buildplate"
This commit is contained in:
Simon Edwards 2016-08-24 15:44:38 +02:00
parent aa28ecca37
commit d0cc37658a
1 changed files with 13 additions and 6 deletions
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19
cura/CuraApplication.py
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@ -794,12 +794,19 @@ class CuraApplication(QtApplication):
return
multi_material_decorator = MultiMaterialDecorator.MultiMaterialDecorator()
group_node.addDecorator(multi_material_decorator)
# Reset the position of each node
for node in group_node.getChildren():
new_position = node.getMeshData().getCenterPosition()
new_position = new_position.scale(node.getScale())
node.setPosition(new_position)
# Compute the center of the objects when their origins are aligned.
object_centers = [node.getMeshData().getCenterPosition().scale(node.getScale()) for node in group_node.getChildren()]
middle_x = sum([v.x for v in object_centers]) / len(object_centers)
middle_y = sum([v.y for v in object_centers]) / len(object_centers)
middle_z = sum([v.z for v in object_centers]) / len(object_centers)
offset = Vector(middle_x, middle_y, middle_z)
# Move each node to the same position.
for center, node in zip(object_centers, group_node.getChildren()):
# Align the object and also apply the offset to center it inside the group.
node.setPosition(center - offset)
# Use the previously found center of the group bounding box as the new location of the group
group_node.setPosition(group_node.getBoundingBox().center)