When we have a valid topology type (Triangle or Poly, not None), we render selectable mesh elements.
Added AccumulateElementsFromPredicate to the GeometrySelector interface which allows a predicate function to filter which geometry elements ought to be included in the provided FGeometrySelectionElements. The predicate is aware of the type of element (vert, edge, tri) and the selected element ID (which is a single value encoding the topology ID and the element ID). The predicate returns true for elements to include and false for elements to exclude. Internally, this function builds transient vert, edge, and tri selections with this predicate and then accumulates all selection elements into the provided FGeometrySelectionElements.
#rb lonnie.li
#jira UE-202674
[CL 30860867 by nickolas drake in ue5-main branch]
+ add a callback to the modeling editor mode so it can know whether a tool was cancelled, and make the modeling mode use the selection manager's new save-on-clear/restore feature automatically when its tools are cancelled.
+ make some tools (normals, tangents, inspector) restore the before-tool-start selection after tool use via a utility function, since they shouldn't change mesh IDs that the selection relies on.
#jira UE-195948
#rb Ryan.Schmidt
[CL 29027037 by jimmy andrews in ue5-main branch]
Add DynamicMeshSelector::UpdateAfterGeometryEdit API. StaticMeshSelector implementation updates static mesh after an Edit instead of emitting MeshChange on temporary DynamicMesh.
Delete and Retriangulate Commands now use this API instead of directly emitting transaction, so now these commands work properly on Static Meshes.
FStaticMeshComponentSelectorFactory::CanBuildForTarget now only allows UStaticMeshComponent specifically, filtering out subclasses. This is not ideal but I don't know what else we can do for now, there are many subclasses like ISMC, SplineMeshComponent, etc, that will not work w/ the Selection system. Also now filtering out Engine assets and cooked assets.
ModelingToolsEditorMode now listens for blueprint pre-compiles, and when this occurs, clears the active selection and selection targets. This is necessary because if the selection Component was part of a BP, on recompile it is re-instanced and the old pointer goes stale. Possibly can handle this better or at a more granular level, but clearing the selection is safest. This currently results in things not being undoable because the FChange transactions are on the "old" UDynamicMesh that no longer exists.
UModelingToolsEditorMode::UpdateSelectionManagerOnEditorSelectionChange now does a more thorough job of inspecting the current Actor/Component selection to find Components that could work w/ the selection system.
#rb lonnie.li
[CL 26133067 by ryan schmidt in ue5-main branch]
Selection enable/disable can now be toggled dynamically via mode settings popup, toolbar will hide/show based on current setting state.
GeometrySelectionManager is now always created. New Mode function GetMeshElementSelectionSystemEnabled() indicates whether selection is currently enabled, when disabled active targets will not be tracked.
Selection Toolbar icons now are disabled while in a Tool (as selection system is not active then)
New Static Mesh Assets and Volumes created using Modeling Tools now default to unlocked, via new functions on StaticMeshSelector / Volume Selector.
Unlocked Asset/Volume sets are cleared on level change
Added cvars modeling.Selection.EnableStaticMeshLocking and modeling.Selection.EnableVolumeLocking which can be used to fully disable lock-ability of StaticMesh/Volume (default true)
shortened some names of tool group tabs, as labels are now shown and long names make the bar wider
Added a few toast notifications for when setting state changes require a mode or editor restart.
#rb none
#preflight 64426fabb14f1faacff6921d
[CL 25149511 by ryan schmidt in ue5-main branch]
Add IGeometrySelectionTransformer::PreviewRender() API, for rendering info during selection transforms. Currently being called by UGeometrySelectionManager::DebugRender() for active transforms.
FBasicDynamicMeshSelectionTransformer implements PreviewRender, draws selected mesh edges (tris as edges) and vertices, as well as affected edge ROI.
FDynamicMeshPolygroupTransformer overrides this behavior and draws polygroup edges/verts and edge ROI
FStaticMeshSelector and FVolumeSelector now create FDynamicMeshPolygroupTransformer for polygroup selections
FBasicDynamicMeshSelectionTransformer::bEnableSelectionTransformDrawing flag controls whether this edge drawing is enabled. Disabled on DynamicMeshComponent, enabled on StaticMesh and Volume.
Add Normals recomputation during tri and polygroup transforms in FBasicDynamicMeshSelectionTransformer and FDynamicMeshPolygroupTransformer
Add FGroupTopologyDeformer::EnumerateROIEdges() util function to support above
#rb none
#preflight 641cd27bc44ce895fc62f724
[CL 24780655 by ryan schmidt in ue5-main branch]
Add UGeometrySelectionManager::GetActiveSelectionInfo, returns info about current selection w/o having to copy selection
Override UEditMeshPolygonsActionModeToolBuilder::CanBuildTool, use this new function to do specific per-action filtering to limit to supported input selection types
UEditMeshPolygonsSelectionModeToolBuilder::InitializeNewTool() now filters UI panels for current input selection if available, update Selection-palette PolyEd button to use this builder instead
#jira UE-176168
#preflight 63e2c886c2257e56f413b805
#rb david.hill
[CL 24068438 by ryan schmidt in ue5-main branch]
Add IGeometrySelector::UpdateSelectionViaShape() API, takes a FConvexHull to use as selection shape. Implement in DynamicMeshSelector.
Add UGeometrySelectionManager::UpdateSelectionViaConvex() API, calls above
ModelingToolsEditorMode now implements ILegacyEdModeSelectInterface, ::FrustumSelect() implementation calls above w/ frustum convex hull
Hide Marquee drag mode option, set default drag mode to "none"
Add save/restore of selection mode, drag mode, and volume/staticmesh toggles via UModelingToolsModeCustomizationSettings
Remove old selection toggle commands that were replaced w/ combined commands
Call DeleteSelectionCommand in UModelingToolsEditorMode::ProcessEditDelete() if there is an active selection
#preflight 63cac131fa66be4cc33661a9
#rb none
[CL 23796046 by ryan schmidt in ue5-main branch]
Add support for Tools to provide an "output" selection. Add UGeometrySelectionManager::SetSelectionForComponent() which can set an explicit externally-provided selection. FBaseDynamicMeshSelector::UpdateSelectionFromSelection() now supports selection conversion when available and requested (is used to implement SetSelectionForComponent). New GeometrySelectionUtil functions InitializeSelectionFromTriangles() and ConvertSelection() are used to implement this (note: only Triangles->other conversion is currently supported). Add HaveAvailableGeometrySelection() and SetToolOutputGeometrySelectionForTarget() in StoredMeshSelectionUtil.h, this is the top-level function that Tools can use to set an Output selection.
ExtrudeMeshSelectionTool now emits output selection.
Update EditMeshPolygonsTool to use new Selection system and allow individual operations to be utilized as standalone Tools. Convert EditMeshPolygonsTool to be a USingleTargetWithSelectionTool, use FGeometrySelection to initialize selection. Add bTerminateOnPendingActionComplete flag, which is set when Tool is directly initialized to a specific operation, and forces tool to shut down when operation completes. This allows it to be used to more cleanly implement multiple action buttons in Modeling UI. When in this mode, selection panels are not shown. On Shutdown, now emits an "output" selection which GeometrySelectionManager can use to provide new selection to user. Update UPolygonSelectionMechanic Set/Get selection APIs to use FGeometrySelection instead of UPersistentMeshSelection.
port UVProjectionTool to derive from USingleTargetWithSelectionTool, use FGeometrySelection to initialize target ROI
deprecate UPersistentMeshSelection and related functions in StoredMeshSelectionUtil.h. Deprecate Tool Input Selection APIs in USingleSelectionMeshEditingTool and Builder.
Repurpose old ModelingMode-level PolyModel tab operations for new Selection Tools UI, now support Inset, Outset, Cut Faces, Insert Edge Loop, PushPull, and Bevel.
#rb none
#preflight 63c84fa2b065224750b9831f
[CL 23766643 by ryan schmidt in ue5-main branch]
Add UInteractiveCommandResult, UInteractiveCommand::ExecuteCommand() now optionally can return a result subclass
Add UGeometrySelectionEditCommandResult, UGeometrySelectionEditCommand now can optionally return an "output" selection via this type
UGeometrySelectionManager::ExecuteSelectionCommand optionally can restore a selection after a command, via UGeometrySelectionEditCommandResult
Add UDisconnectGeometrySelectionCommand, implements disconnection of selected triangles (ie separates but not into a new mesh)
Add UModifyGeometrySelectionCommand, implements various selection edits (select all, expand to connected, invert, invert connected, expand, contract)
Add IGeometrySelector::InitializeSelectionFromPredicate() and ::UpdateSelectionFromSelection(), implement in UDynamicMeshSelector, used to implement selection edit commands
Add UI to enable new commands in Modeling Mode
#rb none
#preflight 63c047f4305002c64170f6a2
[CL 23667880 by ryan schmidt in ue5-main branch]
Refactor most of FDynamicMeshSelector into FDynamicMeshSelectorBase, FDynamicMeshSelector is now a subclass.
Move the DynamicMeshTransformer from cpp to FBasicDynamicMeshSelectionTransformer in header.
Add FVolumeSelector and FStaticMeshSelector which are derived from FBaseDynamicMeshSelector.
Add ability to filter selection queries/edits by TopologyID in FGeometrySelectionEditor. This is necesary for polygroup and polygroup-edge selections as their encoding includes an arbitrary TriangleID paired w/ the TopologyID.
UGeometrySelectionManager now manages this TopologyID filtering on selection editors it creates/updates
Add concept of "Tracked" selection changes to UGeometrySelectionManager, allows a single selection FChange to be constructed incrementally, eg like with a brush. Add a variant of raycast-selection-update that can be run inside a tracked change.
#rb none
#preflight 6388f0cf4b2f03a7d761ccef
[CL 23361634 by ryan schmidt in ue5-main branch]
