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  3. FMeshRenderBufferSetConversionUtil

FMeshRenderBufferSetConversionUtil

Parameters and accompanying functions used to build and update FMeshRenderBuffers from a dynamic mesh.

API > API/Runtime > API/Runtime/GeometryFramework > API/Runtime/GeometryFramework/Components

References

   
Module GeometryFramework
Header /Engine/Source/Runtime/GeometryFramework/Public/Components/MeshRenderBufferSet.h
Include #include "Components/MeshRenderBufferSet.h"

Syntax

struct FMeshRenderBufferSetConversionUtil

Remarks

Parameters and accompanying functions used to build and update FMeshRenderBuffers from a dynamic mesh. For usage, see FBaseDynamicMeshSceneProxy or the simple converter below FDynamicMeshComponentToMeshRenderBufferSet

Note: This is low-level and methods assume, but do not check, all input data is consistent (e.g. that all overlays, the triangle count and enumerator are all consistent with the provided mesh. )

Variables

  Type Name Description
Public variable bool bApplyVertexColorRemapping If true, VertexColorRemappingFunc is called on Vertex Colors provided from Mesh to remap them to a different color
Public variable bool bIgnoreVertexColors If true, vertex colors on the FDynamicMesh will be ignored
Public variable bool bUsePerTriangleColor If true, a per-triangle color is used to set vertex colors
Public variable bool bUsePerTriangleNormals If true, a facet normals are used instead of mesh normals
Public variable bool bUseSecondaryTriBuffers If true, populate secondary buffers using SecondaryTriFilterFunc
Public variable EDynamicMeshVertexColorTransformMode ColorSpaceTransformMode Color Space Transform/Conversion applied to Vertex Colors provided from Mesh Color Overlay Attribute Color Space Conversion is applied after any Vertex Color Remapping.
Public variable FColor ConstantVertexColor Constant color assigned to vertices if no other vertex color is specified
Public variable TFunction< FColor(const FDynamicMesh3 *, int)> PerTriangleColorFunc Per-triangle color function. Only called if bUsePerTriangleColor=true
Public variable TUniqueFunction< bool(const FDynamicMesh3 *, int32)> SecondaryTriFilterFunc Filter predicate for secondary triangle index buffer. Only called if bUseSecondaryTriBuffers=true
Public variable TUniqueFunction< void(FVector4f &)> VertexColorRemappingFunc Vertex color remapping function.

Functions

  Type Name Description
Public function FColor

GetOverlayColorAsFColor ( const FDynamicMeshColorOverlay* ColorOverlay,
int32 ElementID
)

 Get the overlay color the FColor, respecting the ColorSpaceTransformMode utilizing the VertexColorRemappingFunc if requested.
Public function void

InitializeBuffersFromOverlays ( FMeshRenderBufferSet* RenderBuffers,
const FDynamicMesh3* Mesh,
int NumTriangles,
TriangleEnumerable Enumerable,
const FDynamicMeshUVOverlay* UVOverlay,
const FDynamicMeshNormalOverlay* NormalOverlay,
const FDynamicMeshColorOverlay* ColorOverlay,
TFunctionRef< void(int, int, int, const FVector3f&, FVector3f&, FVector3f&)> TangentsFunc,
bool bTrackTriangles
)

 Initialize rendering buffers from given attribute overlays.
Public function void

InitializeBuffersFromOverlays ( FMeshRenderBufferSet* RenderBuffers,
const FDynamicMesh3* Mesh,
int NumTriangles,
TriangleEnumerable Enumerable,
const TArray< const FDynamicMeshUVOverlay*, UVOverlayListAllocator >& UVOverlays,
const FDynamicMeshNormalOverlay* NormalOverlay,
const FDynamicMeshColorOverlay* ColorOverlay,
TFunctionRef< void(int, int, int, const FVector3f&, FVector3f&, FVector3f&)> TangentsFunc,
bool bTrackTriangles
)

 Initialize rendering buffers from given attribute overlays.
Public function void

RecomputeRenderBufferTriangleIndexSets ( FMeshRenderBufferSet* RenderBuffers,
const FDynamicMesh3* Mesh
)

 RecomputeRenderBufferTriangleIndexSets re-sorts the existing set of triangles in a FMeshRenderBufferSet into primary and secondary index buffers.
Public function void

UpdateSecondaryTriangleBuffer ( FMeshRenderBufferSet* RenderBuffers,
const FDynamicMesh3* Mesh,
bool bDuplicate
)

 ------------FMeshRenderBufferSetConversionUtil --------------- ///
Public function void

UpdateVertexBuffersFromOverlays ( FMeshRenderBufferSet* RenderBuffers,
const FDynamicMesh3* Mesh,
int NumTriangles,
TriangleEnumerable Enumerable,
const FDynamicMeshNormalOverlay* NormalOverlay,
const FDynamicMeshColorOverlay* ColorOverlay,
TFunctionRef< void(int, int, int, const FVector3f&, FVector3f&, FVector3f&)> TangentsFunc,
bool bUpdatePositions,
bool bUpdateNormals,
bool bUpdateColors
)

 Update vertex positions/normals/colors of an existing set of render buffers.
Public function void

UpdateVertexUVBufferFromOverlays ( FMeshRenderBufferSet* RenderBuffers,
const FDynamicMesh3* Mesh,
int32 NumTriangles,
TriangleEnumerable Enumerable,
const TArray< const FDynamicMeshUVOverlay*, UVOverlayListAllocator >& UVOverlays
)

 Update vertex uvs of an existing set of render buffers.

Typedefs

Name Description
FIndex2i  
FIndex3i  

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