CURA-4525 Fix load and save projects. Not storing build plates or object names yet.

plugins/3MFReader/ThreeMFReader.py

@@ -15,8 +15,8 @@ from cura.Settings.SettingOverrideDecorator import SettingOverrideDecorator
 from UM.Application import Application
 from cura.Settings.ExtruderManager import ExtruderManager
 from cura.QualityManager import QualityManager
-#from UM.Scene.SceneNode import SceneNode
-from cura.Scene.CuraSceneNode import CuraSceneNode as SceneNode
+from cura.Scene.CuraSceneNode import CuraSceneNode
+from cura.Scene.BuildPlateDecorator import BuildPlateDecorator
 from cura.SliceableObjectDecorator import SliceableObjectDecorator
 from cura.ZOffsetDecorator import ZOffsetDecorator
 
@@ -44,6 +44,7 @@ class ThreeMFReader(MeshReader):
         }
         self._base_name = ""
         self._unit = None
+        self._object_count = 0  # Used to name objects as there is no node name yet.
 
     def _createMatrixFromTransformationString(self, transformation):
         if transformation == "":
@@ -78,7 +79,12 @@ class ThreeMFReader(MeshReader):
     ##  Convenience function that converts a SceneNode object (as obtained from libSavitar) to a Uranium scene node.
     #   \returns Uranium scene node.
     def _convertSavitarNodeToUMNode(self, savitar_node):
-        um_node = SceneNode()
+        self._object_count += 1
+        node_name = "Object %s" % self._object_count
+
+        um_node = CuraSceneNode()
+        um_node.addDecorator(BuildPlateDecorator(0))
+        um_node.setName(node_name)
         transformation = self._createMatrixFromTransformationString(savitar_node.getTransformation())
         um_node.setTransformation(transformation)
         mesh_builder = MeshBuilder()
@@ -155,6 +161,7 @@ class ThreeMFReader(MeshReader):
 
     def read(self, file_name):
         result = []
+        self._object_count = 0  # Used to name objects as there is no node name yet.
         # The base object of 3mf is a zipped archive.
         try:
             archive = zipfile.ZipFile(file_name, "r")