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SetParent now correctly uses transformations

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This is different from the old way of setting scale / rotation & position in sequence.
The assumption in that case only held if all spaces had the same axis orientations (which is not the case for 3MF)

Contributes to CURA-382
This commit is contained in:
Jaime van Kessel 2016-10-28 15:07:35 +02:00
parent 75be8080ec
commit 83315f13b3
1 changed files with 12 additions and 6 deletions
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16
cura/SetParentOperation.py
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@ -32,14 +32,20 @@ class SetParentOperation(Operation.Operation):
# \param new_parent The new parent. Note: this argument can be None, which would hide the node from the scene.
def _set_parent(self, new_parent):
if new_parent:
self._node.setPosition(self._node.getWorldPosition() - new_parent.getWorldPosition())
current_parent = self._node.getParent()
if current_parent:
self._node.scale(current_parent.getScale() / new_parent.getScale())
self._node.rotate(current_parent.getOrientation())
# Based on the depth difference, we need to do something different.
depth_difference = current_parent.getDepth() - new_parent.getDepth()
child_transformation = self._node.getLocalTransformation()
if depth_difference > 0:
parent_transformation = current_parent.getLocalTransformation()
# A node in the chain was removed, so we need to squash the parent info into all the nodes, so positions remain the same.
self._node.setTransformation(parent_transformation.multiply(child_transformation))
else:
self._node.scale(Vector(1, 1, 1) / new_parent.getScale())
self._node.rotate(new_parent.getOrientation().getInverse())
# A node is inserted into the chain, so use the inverse of the parent to set the transformation of it's children.
parent_transformation = new_parent.getLocalTransformation()
result = parent_transformation.getInverse().multiply(child_transformation, copy = True)
self._node.setTransformation(result)
self._node.setParent(new_parent)