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- create a new MeshTopologySelector base class. The existing GroupTopologySelector class now inherits from it, as does a new BoundarySelector class - likewise, create a new MeshTopologySelectionMehchanic base class and have (existing) PolygonSelectionMechanic and (new) BoundarySelectionMechanic inherit from it - the new Boundary classes use FMeshBoundary loops to define selectable loops rather than FGroupTopology HoleFillTool: - change to using BoundarySelectionMechanic instead of GroupTopologySelector Misc: - allow FMeshBoundaryLoops to fail untangling a loop with bowties but still continue processing other loops #jira UE-144821 #rb jimmy.andrews #preflight 63222176e93a80888cb7d3df [CL 22013854 by tyson brochu in ue5-main branch]
95 lines
2.9 KiB
C++
95 lines
2.9 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#include "Selection/BoundarySelectionMechanic.h"
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#include "MeshBoundaryLoops.h"
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#include "Selection/BoundarySelector.h"
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#include "ToolSceneQueriesUtil.h"
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using namespace UE::Geometry;
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#define LOCTEXT_NAMESPACE "UBoundarySelectionMechanic"
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void UBoundarySelectionMechanic::Initialize(
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const FDynamicMesh3* MeshIn,
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FTransform3d TargetTransformIn,
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UWorld* WorldIn,
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const UE::Geometry::FMeshBoundaryLoops* BoundaryLoopsIn,
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TFunction<FDynamicMeshAABBTree3* ()> GetSpatialSourceFuncIn)
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{
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TopoSelector = MakeShared<FBoundarySelector>(MeshIn, BoundaryLoopsIn);;
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UMeshTopologySelectionMechanic::Initialize(MeshIn, TargetTransformIn, WorldIn, GetSpatialSourceFuncIn);
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}
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bool UBoundarySelectionMechanic::UpdateHighlight(const FRay& WorldRay)
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{
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checkf(DrawnTriangleSetComponent != nullptr, TEXT("Initialize() not called on UMeshTopologySelectionMechanic."));
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FRay3d LocalRay(TargetTransform.InverseTransformPosition((FVector3d)WorldRay.Origin),
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TargetTransform.InverseTransformVector((FVector3d)WorldRay.Direction));
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UE::Geometry::Normalize(LocalRay.Direction);
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HilightSelection.Clear();
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FVector3d LocalPosition, LocalNormal;
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FGroupTopologySelector::FSelectionSettings TopoSelectorSettings = GetTopoSelectorSettings(CameraState.bIsOrthographic);
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bool bHit = TopoSelector->FindSelectedElement(TopoSelectorSettings, LocalRay, HilightSelection, LocalPosition, LocalNormal);
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// Don't hover highlight a selection that we already selected, because people didn't like that
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if (PersistentSelection.Contains(HilightSelection))
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{
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HilightSelection.Clear();
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}
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return bHit;
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}
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bool UBoundarySelectionMechanic::UpdateSelection(const FRay& WorldRay, FVector3d& LocalHitPositionOut, FVector3d& LocalHitNormalOut)
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{
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FRay3d LocalRay(TargetTransform.InverseTransformPosition((FVector3d)WorldRay.Origin),
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TargetTransform.InverseTransformVector((FVector3d)WorldRay.Direction));
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UE::Geometry::Normalize(LocalRay.Direction);
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const FGroupTopologySelection PreviousSelection = PersistentSelection;
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FVector3d LocalPosition, LocalNormal;
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FGroupTopologySelection Selection;
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FGroupTopologySelector::FSelectionSettings TopoSelectorSettings = GetTopoSelectorSettings(CameraState.bIsOrthographic);
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if (TopoSelector->FindSelectedElement(TopoSelectorSettings, LocalRay, Selection, LocalPosition, LocalNormal))
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{
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LocalHitPositionOut = LocalPosition;
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LocalHitNormalOut = LocalNormal;
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}
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if (ShouldAddToSelectionFunc())
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{
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if (ShouldRemoveFromSelectionFunc())
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{
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PersistentSelection.Toggle(Selection);
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}
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else
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{
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PersistentSelection.Append(Selection);
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}
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}
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else if (ShouldRemoveFromSelectionFunc())
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{
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PersistentSelection.Remove(Selection);
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}
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else
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{
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PersistentSelection = Selection;
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}
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if (PersistentSelection != PreviousSelection)
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{
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SelectionTimestamp++;
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OnSelectionChanged.Broadcast();
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return true;
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}
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return false;
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}
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#undef LOCTEXT_NAMESPACE
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