I am using XCAF to build TDocStd_Application and TDocStd_Document TDocStd_Document is responsible for importing Step and exporting Step files The Step file has a tree structure assembly like the following
|-chassis ----|-wheel-axle --------|-wheel --------|-wheel --------|-axle ----|-wheel-axle --------|-wheel --------|-wheel --------|-axle
I import the Step file into TDocStd_Document, recursively traverse the nodes to get the TopoDS_Shape of each node. To display the model in the AIS_InteractiveContext, I convert the TopoDS_Shape to AIS_Shape. I want to modify the position of a node(such as wheel-axle) to modifying its own and its children's nodes, both the position displayed in AIS and the position of the TDocStd_Document file node (to export the new position to STEP files). My idea is to modify the position of AIS_Shape, because I want to use AIS_Manipulator to modify its position.
My question is, how can I update the position to TDocStd_Document?
The attached step file is an assembly tree structure model.