UPlaneDistanceFromHitMechanic | Unreal Engine 4.27 Documentation

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

Inheritance Hierarchy

References


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

Syntax

UCLASS&40;&41;  
class UPlaneDistanceFromHitMechanic : public UInteractionMechanic

Remarks

UPlaneDistanceFromHitMechanic implements an interaction where a Height/Distance from a plane is defined by intersecting a ray with a target mesh, and then using that hit point to define the distance. Optionally the hit point can be snapped (eg to a world grid), and also the ray can hit other objects to define the height.

Variables

Type	Name	Description
bool	bCurrentHitIsWorldHit	True if the current hit/height was determined via WorldHitQueryFunc result
bool	bFallbackToLineAxisPoint	If true, then if we don't find any intersection point, just use nearest point on plane normal to ray
float	CurrentHeight	Height at last hit point
UE::Geometry::FFrame3d	CurrentHitPosFrameWorld	World frame at last hit point
FHitResult	LastActiveWorldHit	Last active hit point
FFrame3d	PreviewHeightFrame
UE::Geometry::FDynamicMesh3	PreviewHeightTarget
UE::Geometry::FDynamicMeshAABBTree3	PreviewHeightTargetAABB
TUniqueFunction< bool(const FRay &, FHitResult &)>	WorldHitQueryFunc	If this function is set, we will check it for a ray intersection if the target mesh is not hit
TUniqueFunction< bool(const FVector3d &, FVector3d &)>	WorldPointSnapFunc	If this function is set, the hit point will be passed in to this function for snapping.

Functions

Type	Name	Description
const FFrame3d &	GetPlane ()
void	Initialize ( UE::Geometry::FDynamicMesh3&& HitTargetMesh, const FFrame3d& PlaneFrameWorld, bool bMeshInWorldCoords )	Set the hit target mesh and the plane frame.
void	Initialize ( UE::Geometry::FDynamicMesh3&& HitTargetMesh, const FFrame3d& PlaneFrameWorld, const FTransform& MeshToPlaneFrame )	Set the hit target mesh and the plane frame.
void	UpdateCurrentDistance ( const FRay& WorldRay )	Update the current distance/height based on the input world ray

Overridden from UInteractionMechanic

	Type	Name	Description
	void	Render ( IToolsContextRenderAPI* RenderAPI )	Allow the Mechanic to do any custom drawing (ie via PDI/RHI)
	void	Setup ( UInteractiveTool* ParentTool )	Called to initialize the InteractionMechanic

Typedefs

Name	Description
FFrame3d

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