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> Unreal Engine API Reference > Plugins > MagicLeap > UMagicLeapMeshTrackerComponent

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UMagicLeapMeshTrackerComponent

The MeshTrackerComponent class manages requests for environmental mesh data, processes the results and provides them to the calling system.

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Inheritance Hierarchy

UObjectBase

UObjectBaseUtility

UObject

UActorComponent

USceneComponent

UMagicLeapMeshTrackerComponent

References

Module	MagicLeap
Header	/Engine/Plugins/Lumin/MagicLeap/Source/MagicLeap/Public/MagicLeapMeshTrackerComponent.h
Include	#include "MagicLeapMeshTrackerComponent.h"

Syntax

[UCLASS](Programming/UnrealArchitecture/Reference/Classes#classdeclaration)(ClassGroup=MagicLeap, BlueprintType, Blueprintable, EditInlineNew,
       Meta=(BlueprintSpawnableComponent))
class UMagicLeapMeshTrackerComponent :
    public USceneComponent,
    public IMagicLeapMeshBlockSelectorInterface

Remarks

The MeshTrackerComponent class manages requests for environmental mesh data, processes the results and provides them to the calling system. The calling system is able request environmental mesh data within a specified area. Various other search criteria can be set via this class's public properties. Mesh data requests are processed on a separate thread. Once a mesh data request has been processed the calling system will be notified via an FOnMeshTrackerUpdated broadcast.

Variables

	Name	Description
TArray< FColor ...	BlockVertexColors	Colors through which we cycle when setting vertex color by block.
UBoxComponent &...	BoundingVolume	Bounding box for the mesh scan. The mesh will be scanned for only within this box.
int32	BricksPerFrame	Specifies the number of MR Mesh bricks to create per frame.
float	DisconnectedSectionArea	Any section that is disconnected from the main mesh and has an area (in Unreal Units squared) less than this value will be removed.
EMagicLeapMeshL...	LevelOfDetail	Meshing LOD.
EMagicLeapMeshT...	MeshType	The type of mesh to query.
UMRMeshComponen...	MRMesh	MRMeshComponent can render and provide collision based on the Mesh data.
FOnMeshTrackerU...	OnMeshTrackerUpdated	Activated whenever new information about this mesh tracker is detected.
float	PerimeterOfGapsToFill	The perimeter (in Unreal Units) of gaps to be filled. 0 means do not fill. A good value is 300cm.
bool	Planarize	If true, the system will planarize the returned mesh i.e. planar regions will be smoothed out.
bool	RemoveOverlappingTriangles	If true, overlapping area between two mesh blocks will be removed.
bool	RequestNormals	If true, the system will generate normals for the triangle vertices.
bool	RequestVertexConfidence	If true, the system will generate the mesh confidence values for the triangle vertices.
bool	ScanWorld	Set to true to start scanning the world for meshes.
FLinearColor	VertexColorFromConfidenceOne	Color mapped to confidence value of one.
FLinearColor	VertexColorFromConfidenceZero	Color mapped to confidence value of zero.
EMagicLeapMeshV...	VertexColorMode	Vertex Colors can be unused, or filled with several types of information.

Constructors

	Name	Description
	UMagicLeapMeshTrackerComponent()

Destructors

	Name	Description
	~UMagicLeapMeshTrackerComponent()	Destroys the FMagicLeapMeshTrackerImpl instance.

Functions

	Name	Description
void	ConnectBlockSelector ( TScriptInterface< IMagicLeapMeshBlo... )	Sets the interface to be used for selecting blocks to mesh.
void	ConnectMRMesh ( UMRMeshComponent* InMRMeshPtr )	Sets the procedural mesh component that will store and display the environmental mesh results.
void	DisconnectBlockSelector()	Disconnects the previously connected IMagicLeapMeshBlockSelectorInterface.
void	DisconnectMRMesh ( UMRMeshComponent* InMRMeshPtr )	Unlinks the current procedural mesh component from the mesh tracking system.
int32	GetNumQueuedBlockUpdates()	Gets the number of mesh bricks in the pending queue.
void	SelectMeshBlocks ( const FMagicLeapTrackingMeshInfo& ..., TArray< FMagicLeapMeshBlockRequest ... )	IMagicLeapMeshBlockSelectorInterface
void	SelectMeshBlocks_Implementation ( const FMagicLeapTrackingMeshInfo& ..., TArray< FMagicLeapMeshBlockRequest ... )

Overridden from UActorComponent

		Name	Description
	void	TickComponent ( float DeltaTime, enum ELevelTick TickType, FActorComponentTickFunction* T... )	Polls for and handles the results of the environmental mesh queries.

Overridden from UObject

	Name	Description
void	BeginDestroy()	Unlinks the current procedural mesh component from the mesh tracking system.
void	FinishDestroy()	Destroys the interface object to the mesh tracking api
void	PostEditChangeProperty ( FPropertyChangedEvent& PropertyCha... )	Called when a property on this object has been modified externally

Classes

	Name	Description
	FOnMeshTrackerUpdated	Delegate used by OnMeshUpdated().

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