FDynamicMeshBuilder | Unreal Engine 5.2 Documentation

References


Module	Engine
Header	/Engine/Source/Runtime/Engine/Public/DynamicMeshBuilder.h
Include	#include "DynamicMeshBuilder.h"

Syntax

class FDynamicMeshBuilder

Remarks

A utility used to construct dynamically generated meshes, and render them to a FPrimitiveDrawInterface. Note: This is meant to be easy to use, not fast. It moves the data around more than necessary, and requires dynamically allocating RHI resources. Exercise caution.

Constructors

	Type	Name	Description
		FDynamicMeshBuilder ( ERHIFeatureLevel::Type InFeatureLevel, uint32 InNumTexCoords, uint32 InLightmapCoordinateIndex, bool InUse16bitTexCoord, FDynamicMeshBufferAllocator* InDynamicMeshBufferAllocator )	Initialization constructor.

Destructors

	Type	Name	Description
		~FDynamicMeshBuilder ()	Destructor.

Functions

Type	Name	Description
void	AddTriangle ( int32 V0, int32 V1, int32 V2 )	Adds a triangle to the mesh.
void	AddTriangles ( const TArray< uint32 >& InIndices )	Add many indices to the mesh.
int32	AddVertex ( const FVector3f& InPosition, const FVector2f& InTextureCoordinate, const FVector3f& InTangentX, const FVector3f& InTangentY, const FVector3f& InTangentZ, const FColor& InColor )	Adds a vertex to the mesh.
int32	AddVertex ( const FDynamicMeshVertex& InVertex )	Adds a vertex to the mesh.
int32	AddVertices ( const TArray< FDynamicMeshVertex >& InVertices )	Adds many vertices to the mesh.
void	Draw ( FPrimitiveDrawInterface* PDI, const FMatrix& LocalToWorld, const FMaterialRenderProxy* MaterialRenderProxy, uint8 DepthPriorityGroup, bool bDisableBackfaceCulling, bool bReceivesDecals, const FHitProxyId HitProxyId )	Draws the mesh to the given primitive draw interface.
void	GetMesh ( const FMatrix& LocalToWorld, const FMaterialRenderProxy* MaterialRenderProxy, uint8 DepthPriorityGroup, bool bDisableBackfaceCulling, bool bReceivesDecals, int32 ViewIndex, FMeshElementCollector& Collector )	Adds a mesh of what's been built so far to the collector.
void	GetMesh ( const FMatrix& LocalToWorld, const FMaterialRenderProxy* MaterialRenderProxy, uint8 DepthPriorityGroup, const FDynamicMeshBuilderSettings& Settings, FDynamicMeshDrawOffset const*const DrawOffset, int32 ViewIndex, FMeshElementCollector& Collector, const FHitProxyId HitProxyId )
void	GetMesh ( const FMatrix& LocalToWorld, const FMaterialRenderProxy* MaterialRenderProxy, uint8 DepthPriorityGroup, bool bDisableBackfaceCulling, bool bReceivesDecals, bool bUseSelectionOutline, int32 ViewIndex, FMeshElementCollector& Collector, HHitProxy* HitProxy )
void	GetMesh ( const FMatrix& LocalToWorld, const FMaterialRenderProxy* MaterialRenderProxy, uint8 DepthPriorityGroup, bool bDisableBackfaceCulling, bool bReceivesDecals, bool bUseSelectionOutline, int32 ViewIndex, FMeshElementCollector& Collector, const FHitProxyId HitProxyId )
void	GetMesh ( const FMatrix& LocalToWorld, const FMatrix& PrevLocalToWorld, const FMaterialRenderProxy* MaterialRenderProxy, uint8 DepthPriorityGroup, const FDynamicMeshBuilderSettings& Settings, FDynamicMeshDrawOffset const*const DrawOffset, int32 ViewIndex, FMeshElementCollector& Collector, const FHitProxyId HitProxyId )
void	GetMeshElement ( const FPrimitiveUniformShaderParameters& PrimitiveParams, const FMaterialRenderProxy* MaterialRenderProxy, uint8 DepthPriorityGroup, bool bDisableBackfaceCulling, int32 ViewIndex, FMeshBuilderOneFrameResources& OneFrameResource, FMeshBatch& Mesh )
void	GetMeshElement ( const FMatrix& LocalToWorld, const FMaterialRenderProxy* MaterialRenderProxy, uint8 DepthPriorityGroup, bool bDisableBackfaceCulling, bool bReceivesDecals, int32 ViewIndex, FMeshBuilderOneFrameResources& OneFrameResource, FMeshBatch& Mesh )
void	ReserveTriangles ( int32 InNumTriangles )	Pre-allocate space for the given number of triangles.
void	ReserveVertices ( int32 InNumVertices )	Pre-allocate space for the given number of vertices.