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  3. UCollisionPrimitivesMechanic

UCollisionPrimitivesMechanic

API > API/Plugins > API/Plugins/ModelingComponents > API/Plugins/ModelingComponents/Mechanics

Inheritance Hierarchy

References

   
Module ModelingComponents
Header /Engine/Plugins/Runtime/MeshModelingToolset/Source/ModelingComponents/Public/Mechanics/CollisionPrimitivesMechanic.h
Include #include "Mechanics/CollisionPrimitivesMechanic.h"

Syntax

UCLASS&40;&41;  
class UCollisionPrimitivesMechanic :  
    public UInteractionMechanic,  
    public IClickBehaviorTarget,  
    public IHoverBehaviorTarget

Variables

  Type Name Description
Protected variable bool bCtrlToggle  
Protected variable bool bGizmoBeingDragged Used to make it easy to tell whether the gizmo was moved by the user or by undo/redo or some other change that we shouldn't respond to.
Protected variable bool bIsDraggingRectangle  
Protected variable UProperty TObjectPtr< UCombinedTransformGizmo > BoxTransformGizmo  
Protected variable UProperty TObjectPtr< UTransformProxy > BoxTransformProxy  
Protected variable bool bShiftToggle Support for Shift and Ctrl toggle.
Protected variable FViewCameraState CachedCameraState  
Protected variable UProperty TObjectPtr< UCombinedTransformGizmo > CapsuleTransformGizmo  
Protected variable UProperty TObjectPtr< UTransformProxy > CapsuleTransformProxy  
Protected variable UProperty TObjectPtr< UTransformProxy > CurrentActiveProxy  
Protected variable int32 CurrentChangeStamp Used for expiring undo/redo changes, which compare this to their stored value and expire themselves if they do not match.
Protected variable TArray< int32 > CurrentDragSelection  
Protected variable TMap< int32, int32 > CurveToPrimitiveLookup  
Protected variable float DepthBias  
Protected variable UProperty TObjectPtr< ULineSetComponent > DrawnPrimitiveEdges  
Protected variable UProperty TObjectPtr< UCombinedTransformGizmo > FullTransformGizmo  
Protected variable UProperty TObjectPtr< UTransformProxy > FullTransformProxy  
Protected variable UE::Geometry::FGeometrySet3 GeometrySet Used for spatial queries.
Protected variable TFunction< bool(const FVector3d &, const FVector3d &)> GeometrySetToleranceTest Support for hovering.
Protected variable FVector GizmoStartPosition The starting point of the gizmo is needed to determine the offset by which to move the points.
Protected variable FQuat GizmoStartRotation  
Protected variable FVector GizmoStartScale  
Protected variable FColor HoverColor  
Protected variable int32 HoveredPrimitiveID  
Protected variable FTransform3d LocalToWorldTransform  
Protected variable UProperty TObjectPtr< URectangleMarqueeMechanic > MarqueeMechanic Support for selection.
Protected variable UE::Geometry::FAxisAlignedBox3d MeshBounds  
Protected variable FColor NormalSegmentColor Variables for drawing.
Public variable OnCollisionGeometryChangedEvent OnCollisionGeometryChanged  
Public variable OnSelectionChangedEvent OnSelectionChanged  
Protected variable TSharedPtr< FPhysicsDataCollection > PhysicsData  
Protected variable TSet< int32 > PreDragSelection  
Protected variable FColor PreHoverPrimitiveColor Cache previous color while temporarily changing the color of a hovered-over curve.
Protected variable UProperty TObjectPtr< UPreviewGeometry > PreviewGeometry Used for displaying Primitives/segments
Protected variable TSharedPtr< FKAggregateGeom > PrimitivePreTransform  
Protected variable TArray< FPrimitiveRenderData > PrimitiveRenderData  
Protected variable TMap< int32, TArray< int32 > > PrimitiveToCurveLookup  
Protected variable float SegmentsThickness  
Protected variable FColor SelectedColor  
Protected variable TSet< int32 > SelectedPrimitiveIDs  
Protected variable TFunction< bool(void)> ShouldAddToSelectionFunc Default modifier key behavior is consistent with PolygonSelectionMechanic.
Public variable FShouldHideGizmo ShouldHideGizmo  
Protected variable TFunction< bool(void)> ShouldRemoveFromSelectionFunc  
Protected variable UProperty TObjectPtr< UCombinedTransformGizmo > SphereTransformGizmo  
Protected variable UProperty TObjectPtr< UTransformProxy > SphereTransformProxy  
Protected variable UProperty TObjectPtr< UCombinedTransformGizmo > TranslateTransformGizmo  
Protected variable UProperty TObjectPtr< UTransformProxy > TranslateTransformProxy Support for gizmos.

Functions

  Type Name Description
Public function void

AddBox ()

  
Public function void  
Public function void  
Protected function void  
Public function void  
Public function void  
Protected function bool

DeselectPrimitive ( int32 PrimitiveID
)

  
Public function Virtual void

DrawHUD ( FCanvas* Canvas,
IToolsContextRenderAPI* RenderAPI
)

  
Public function void  
Protected function void

GizmoTransformChanged ( UTransformProxy* Proxy,
FTransform Transform
)

 Callbacks we'll receive from the gizmo proxy.
Protected function void  
Protected function void  
Protected function bool

HitTest ( const FInputDeviceRay& ClickPos,
FInputRayHit& ResultOut
)

 All of the following do not issue undo/redo change objects.
Public function Virtual void

Initialize ( TSharedPtr< FPhysicsDataCollection >,
const UE::Geometry::FAxisAlignedBox3d& MeshBoundsIn,
const FTransform3d& LocalToWorldTransform
)

  
Protected function void  
Protected function void

OnDragRectangleFinished ( const FCameraRectangle& Rectangle,
bool bCancelled
)

  
Protected function void  
Protected function void

RebuildDrawables ( bool bRegenerateCurveLists
)

  
Protected function void

SelectPrimitive ( int32 PrimitiveID
)

  
Public function void

SetWorld ( UWorld* World
)

  
Protected function void

UpdateCollisionGeometry ( const FKAggregateGeom& NewGeometryIn
)

  
Public function void  
Protected function void  
Protected function void  

Overridden from UInteractionMechanic

  Type Name Description
Public function Virtual void Allow the Mechanic to do any custom drawing (ie via PDI/RHI)
Public function Virtual void

Setup ( UInteractiveTool* ParentTool
)

 UInteractionMechanic.
Public function Virtual void Called to clean up the InteractionMechanic

Overridden from IClickBehaviorTarget

  Type Name Description
Public function Virtual FInputRayHit

IsHitByClick ( const FInputDeviceRay& ClickPos
)

 IClickBehaviorTarget implementation.
Public function Virtual void

OnClicked ( const FInputDeviceRay& ClickPos
)

 Notify Target that click ocurred

Overridden from IModifierToggleBehaviorTarget

  Type Name Description
Public function Virtual void

OnUpdateModifierState ( int ModifierID,
bool bIsOn
)

 Notify target of current modifier state

Overridden from IHoverBehaviorTarget

  Type Name Description
Public function Virtual FInputRayHit IHoverBehaviorTarget implementation.
Public function Virtual void

OnBeginHover ( const FInputDeviceRay& DevicePos
)

 Initialize hover sequence at given position
Public function Virtual void Terminate active hover sequence
Public function Virtual bool

OnUpdateHover ( const FInputDeviceRay& DevicePos
)

 Update active hover sequence with new input position

Classes

  Type Name Description
Protected class FCollisionPrimitivesMechanicGeometryChange Primitives have moved/changed.  
Protected class FCollisionPrimitivesMechanicSelectionChange Primitive selection has changed.  
Protected struct FPrimitiveRenderData    

Typedefs

Name Description
FShouldHideGizmo  
FVector2i  
OnCollisionGeometryChangedEvent This delegate is called every time the collision geometry is changed or moved.
OnSelectionChangedEvent This delegate is called every time the collision geometry selection changes.

Constants

Name Description
CtrlModifierID  
ShiftModifierID  

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