- UPersistentMeshSelection is largely a port of UGroupTopologyStorableSelection, with the actual selection data moved to FGenericMeshSelection
- UPersistentMeshSelectionManager is meant to be used as a ContextObject in a ToolsContext, also contains utility functions to register/unregister/find context object
- Selection is no longer passed as part of FToolBuilderState. Instead Tools access the selection via ContextObject
- UPersistentMeshSelectionManager currently supports a single active selection. Selection changes are transacted via an FChange.
- When not inside a Tool, Selection is visualized with a pink border outline. Currently vertex selection is not visualized.
- Usage model is that on Tool Accept/Complete, prior to Tool Shutdown, any existing selection is cleared, and Tool may set a new Output selection which becomes the active selection
- StoredMeshSelectionUtil.h has utility functions to get current selection, set output selection, and clear it
- SingleSelectionMeshEditingTool already made input selection available to subclasses, port that capability to new architecture
- convert EditMeshPolygonsTool to be a SingleSelectionMeshEditingTool, use provided Input selection and set Output selection as appropriate
- ModelingToolsEditorMode clears active selection where appropriate, eg if selected object changes. However the behavior here will need further improvement, currently relies on questionable event handling from the TypedElement system
#rb semion.piskarev
#rnx
#jira none
#preflight 6136cbbfd9c85a0001fc3b56
[CL 17441056 by Ryan Schmidt in ue5-main branch]
#rb none
#rnx
#ROBOMERGE-SOURCE: CL 6913333 in //UE4/Dev-Editor/...
#ROBOMERGE-BOT: ENGINE (Dev-Editor -> Main) (v366-6836689)
[CL 6913342 by ryan schmidt in Main branch]
