Merge branch 'fix/3MFWriter' of https://github.com/nilsiism/Cura

Ultimaker · Aug 5, 2024 · 4a5aecc · 4a5aecc
2 parents 9bc283f + be4d4d4
commit 4a5aecc
Showing 1 changed file with 9 additions and 7 deletions.
diff --git a/plugins/3MFWriter/ThreeMFWriter.py b/plugins/3MFWriter/ThreeMFWriter.py
@@ -114,22 +114,24 @@ def _convertUMNodeToSavitarNode(um_node,
 
         mesh_data = um_node.getMeshData()
 
+        node_matrix = um_node.getLocalTransformation()
+        node_matrix.preMultiply(transformation)
+
         if center_mesh:
-            node_matrix = Matrix()
+            center_matrix = Matrix()
             # compensate for original center position, if object(s) is/are not around its zero position
             if mesh_data is not None:
                 extents = mesh_data.getExtents()
                 if extents is not None:
                     # We use a different coordinate space while writing, so flip Z and Y
-                    center_vector = Vector(extents.center.x, extents.center.y, extents.center.z)
-                    node_matrix.setByTranslation(center_vector)
-            node_matrix.multiply(um_node.getLocalTransformation())
-        else:
-            node_matrix = um_node.getLocalTransformation()
+                    center_vector = Vector(-extents.center.x, -extents.center.y, -extents.center.z)
+                    center_matrix.setByTranslation(center_vector)
+            node_matrix.preMultiply(center_matrix)
 
-        matrix_string = ThreeMFWriter._convertMatrixToString(node_matrix.preMultiply(transformation))
+        matrix_string = ThreeMFWriter._convertMatrixToString(node_matrix)
 
         savitar_node.setTransformation(matrix_string)
+
         if mesh_data is not None:
             savitar_node.getMeshData().setVerticesFromBytes(mesh_data.getVerticesAsByteArray())
             indices_array = mesh_data.getIndicesAsByteArray()