FMeshApproximationSettings | Unreal Engine 5.7 Documentation

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Name	FMeshApproximationSettings
Type	struct
Header File	/Engine/Source/Runtime/Engine/Public/MeshMerge/MeshApproximationSettings.h
Include Path	#include "MeshMerge/MeshApproximationSettings.h"

Syntax

USTRUCT (Blueprintable)  
struct FMeshApproximationSettings

Variables

Public

Name	Type	Remarks	Include Path	Unreal Specifiers
ApproximationAccuracy	float	Mesh Generation Settings Approximation Accuracy in Meters, will determine (eg) voxel resolution	MeshMerge/MeshApproximationSettings.h	BlueprintReadWrite EditAnywhere Category=ShapeSettings Meta=(DisplayName="Approximation Accuracy (meters)", ClampMin="0.001")
bAllowDistanceField	bool	Whether to allow distance field to be computed for this mesh.	MeshMerge/MeshApproximationSettings.h	BlueprintReadWrite EditAnywhere Category=MeshSettings
BaseCapping	EMeshApproximationBaseCappingType	Optional methods to attempt to close off the bottom of open meshes	MeshMerge/MeshApproximationSettings.h	BlueprintReadWrite EditAnywhere Category=ShapeSettings
bAttemptAutoThickening	bool	If enabled, we will attempt to auto-thicken thin parts or flat sheets	MeshMerge/MeshApproximationSettings.h	BlueprintReadWrite EditAnywhere Category=ShapeSettings
bEmitFullDebugMesh	bool	If true, write the full mesh triangle set (ie flattened, non-instanced) used for mesh generation.	MeshMerge/MeshApproximationSettings.h	BlueprintReadWrite EditAnywhere Category=DebugSettings
bEnableParallelBaking	bool	If false, texture capture and baking will be done serially after mesh generation, rather than in parallel when possible.	MeshMerge/MeshApproximationSettings.h	BlueprintReadWrite EditAnywhere Category=PerformanceSettings
bEnableSimplifyPrePass	bool	If true, a faster mesh simplfication strategy will be used.	MeshMerge/MeshApproximationSettings.h	BlueprintReadWrite EditAnywhere Category=PerformanceSettings
bEstimateHardNormals	bool	Mesh Normals and Tangents Settings If true, normal angle will be used to estimate hard normals	MeshMerge/MeshApproximationSettings.h	BlueprintReadWrite EditAnywhere Category=NormalsSettings
bFillGaps	bool	If true, topological expand/contract is used to try to fill small gaps between objects.	MeshMerge/MeshApproximationSettings.h	BlueprintReadWrite EditAnywhere Category=ShapeSettings
bGenerateNaniteEnabledMesh	bool	Output Static Mesh Settings Whether to generate a nanite-enabled mesh	MeshMerge/MeshApproximationSettings.h	BlueprintReadWrite EditAnywhere Category=MeshSettings
bIgnoreTinyParts	bool	If enabled, tiny parts will be excluded from the mesh merging, which can improve performance	MeshMerge/MeshApproximationSettings.h	BlueprintReadWrite EditAnywhere Category=ShapeSettings
bOccludeFromBottom	bool	If true, then the OcclusionMethod computation is configured to try to consider downward-facing "bottom" geometry as occluded	MeshMerge/MeshApproximationSettings.h	BlueprintReadWrite EditAnywhere Category=SimplifySettings
bPrintDebugMessages	bool	Debug Output Settings If true, print out debugging messages	MeshMerge/MeshApproximationSettings.h	BlueprintReadWrite EditAnywhere Category=DebugSettings
bSupportRayTracing	bool	Whether ray tracing will be supported on this mesh.	MeshMerge/MeshApproximationSettings.h	BlueprintReadWrite EditAnywhere Category=MeshSettings
bUseRenderLODMeshes	bool	Performance Settings If true, LOD0 Render Meshes (or Nanite Fallback meshes) are used instead of Source Mesh data.	MeshMerge/MeshApproximationSettings.h	BlueprintReadWrite EditAnywhere Category=PerformanceSettings
CaptureFieldOfView	float		MeshMerge/MeshApproximationSettings.h	BlueprintReadWrite EditAnywhere AdvancedDisplay Category=MaterialSettings Meta=(ClampMin="5.0", ClampMax="160.0")
ClampVoxelDimension	int32	Maximum allowable voxel count along main directions.	MeshMerge/MeshApproximationSettings.h	BlueprintReadWrite EditAnywhere AdvancedDisplay Category=ShapeSettings Meta=(ClampMin="64", ClampMax="1290")
CurvatureAlignment	float	This parameter controls alignment of the initial patches to creases in the mesh	MeshMerge/MeshApproximationSettings.h	BlueprintReadWrite EditAnywhere Category=UVSettings AdvancedDisplay Meta=(UIMin="0.1", UIMax="2.0", ClampMin="0.01", ClampMax="100.0", EditCondition="UVGenerationMethod == EMeshApproximationUVGenerationPolicy::PreferPatchBuilder")
GapDistance	float	Distance in Meters to expand/contract to fill gaps	MeshMerge/MeshApproximationSettings.h	BlueprintReadWrite EditAnywhere Category=ShapeSettings Meta=(DisplayName="Gap Filling Distance (meters)", ClampMin="0.001", EditCondition="bFillGaps")
GeometricDeviation	float	Allowable Geometric Deviation in Meters when SimplifyMethod incorporates a Geometric Tolerance	MeshMerge/MeshApproximationSettings.h	BlueprintReadWrite EditAnywhere Category=SimplifySettings Meta=(DisplayName="Geometric Deviation (meters)", ClampMin="0.0001", EditCondition="SimplifyMethod == EMeshApproximationSimplificationPolicy::GeometricTolerance")
GroundClipping	EMeshApproximationGroundPlaneClippingPolicy	Configure how the final mesh should be clipped with a ground plane, if desired	MeshMerge/MeshApproximationSettings.h	BlueprintReadWrite EditAnywhere Category=SimplifySettings
GroundClippingZHeight	float	Z-Height for the ground clipping plane, if enabled	MeshMerge/MeshApproximationSettings.h	BlueprintReadWrite EditAnywhere Category=SimplifySettings Meta=(EditCondition="GroundClipping != EMeshApproximationGroundPlaneClippingPolicy::NoGroundClipping")
HardNormalAngle	float		MeshMerge/MeshApproximationSettings.h	BlueprintReadWrite EditAnywhere Category=NormalsSettings Meta=(ClampMin="0.0", ClampMax="90.0", EditCondition="bEstimateHardNormals")
InitialPatchCount	int	Number of initial patches mesh will be split into before computing island merging	MeshMerge/MeshApproximationSettings.h	BlueprintReadWrite EditAnywhere Category=UVSettings AdvancedDisplay Meta=(UIMin="1", UIMax="1000", ClampMin="1", ClampMax="99999999", EditCondition="UVGenerationMethod == EMeshApproximationUVGenerationPolicy::PreferPatchBuilder")
MaterialSettings	FMaterialProxySettings	Material generation settings	MeshMerge/MeshApproximationSettings.h	BlueprintReadWrite EditAnywhere Category=MaterialSettings
MaxAngleDeviation	float	UV islands will not be merged if their average face normals deviate by larger than this amount	MeshMerge/MeshApproximationSettings.h	BlueprintReadWrite EditAnywhere Category=UVSettings AdvancedDisplay Meta=(UIMin="0.0", UIMax="90.0", ClampMin="0.0", ClampMax="180.0", EditCondition="UVGenerationMethod == EMeshApproximationUVGenerationPolicy::PreferPatchBuilder")
MergingThreshold	float	Distortion/Stretching Threshold for island merging - larger values increase the allowable UV stretching	MeshMerge/MeshApproximationSettings.h	BlueprintReadWrite EditAnywhere Category=UVSettings AdvancedDisplay Meta=(UIMin="1.0", UIMax="5.0", ClampMin="1.0", EditCondition="UVGenerationMethod == EMeshApproximationUVGenerationPolicy::PreferPatchBuilder")
MultiSamplingAA	int32	Material Baking Settings If Value is > 1, Multisample output baked textures by this amount in each direction (eg 4 == 16x supersampling)	MeshMerge/MeshApproximationSettings.h	BlueprintReadWrite EditAnywhere Category=MaterialSettings Meta=(ClampMin="0", ClampMax="8", UIMin="0", UIMax="4")
NaniteFallbackPercentTriangles	float	Percentage of triangles to keep from source Nanite mesh for fallback.	MeshMerge/MeshApproximationSettings.h	BlueprintReadWrite EditAnywhere AdvancedDisplay Category=MeshSettings Meta=(EditConditionHides, EditCondition="bGenerateNaniteEnabledMesh && NaniteFallbackTarget == ENaniteFallbackTarget::PercentTriangles", ClampMin=0, ClampMax=1)
NaniteFallbackRelativeError	float	Reduce Nanite fallback mesh until at least this amount of error is reached relative to size of the mesh.	MeshMerge/MeshApproximationSettings.h	BlueprintReadWrite EditAnywhere AdvancedDisplay Category=MeshSettings Meta=(EditConditionHides, EditCondition="bGenerateNaniteEnabledMesh && NaniteFallbackTarget == ENaniteFallbackTarget::RelativeError", ClampMin=0)
NaniteFallbackTarget	ENaniteFallbackTarget	Which heuristic to use when generating the Nanite fallback mesh.	MeshMerge/MeshApproximationSettings.h	BlueprintReadWrite EditAnywhere AdvancedDisplay Category=MeshSettings Meta=(EditConditionHides, EditCondition="bGenerateNaniteEnabledMesh")
NearPlaneDist	float		MeshMerge/MeshApproximationSettings.h	BlueprintReadWrite EditAnywhere AdvancedDisplay Category=MaterialSettings Meta=(ClampMin="0.001", ClampMax="1000.0")
OcclusionMethod	EOccludedGeometryFilteringPolicy	Output Mesh Filtering and Simplification Settings Type of hidden geometry removal to apply	MeshMerge/MeshApproximationSettings.h	BlueprintReadWrite EditAnywhere Category=SimplifySettings
OutputType	EMeshApproximationType	Type of output from mesh approximation process	MeshMerge/MeshApproximationSettings.h	BlueprintReadWrite EditAnywhere Category=ShapeSettings
RenderCaptureResolution	int32	If Value is zero, use MaterialSettings resolution, otherwise override the render capture resolution	MeshMerge/MeshApproximationSettings.h	BlueprintReadWrite EditAnywhere Category=MaterialSettings Meta=(ClampMin="0")
SimplifyMethod	EMeshApproximationSimplificationPolicy	Mesh Simplification criteria	MeshMerge/MeshApproximationSettings.h	BlueprintReadWrite EditAnywhere Category=SimplifySettings
TargetMinThicknessMultiplier	float	Multiplier on Approximation Accuracy used for auto-thickening	MeshMerge/MeshApproximationSettings.h	BlueprintReadWrite EditAnywhere Category=ShapeSettings Meta=(ClampMin="0.001", EditCondition="bAttemptAutoThickening")
TargetTriCount	int32	Target triangle count for Mesh Simplification, for SimplifyMethods that use a Count	MeshMerge/MeshApproximationSettings.h	BlueprintReadWrite EditAnywhere Category=SimplifySettings Meta=(ClampMin="16", EditCondition="SimplifyMethod == EMeshApproximationSimplificationPolicy::FixedTriangleCount")
TinyPartSizeMultiplier	float	Multiplier on Approximation Accuracy used to define tiny-part threshold, using maximum bounding-box dimension	MeshMerge/MeshApproximationSettings.h	BlueprintReadWrite EditAnywhere Category=ShapeSettings Meta=(ClampMin="0.001", EditCondition="bIgnoreTinyParts")
TrianglesPerM	float	Approximate Number of triangles per Square Meter, for SimplifyMethods that use such a constraint	MeshMerge/MeshApproximationSettings.h	BlueprintReadWrite EditAnywhere Category=SimplifySettings Meta=(ClampMin="0.01", EditCondition="SimplifyMethod == EMeshApproximationSimplificationPolicy::TrianglesPerArea")
UVGenerationMethod	EMeshApproximationUVGenerationPolicy	Mesh UV Generation Settings	MeshMerge/MeshApproximationSettings.h	BlueprintReadWrite EditAnywhere Category=UVSettings
WindingThreshold	float	Winding Threshold controls hole filling at open mesh borders.	MeshMerge/MeshApproximationSettings.h	BlueprintReadWrite EditAnywhere AdvancedDisplay Category=ShapeSettings Meta=(ClampMin="0.01", ClampMax="0.99")

Functions

Public

Name	Remarks	Include Path	Unreal Specifiers
void PostSerialize ( const FArchive& Ar )	Handles deprecated properties	MeshMerge/MeshApproximationSettings.h

Operators

Name	Remarks	Include Path	Unreal Specifiers
bool operator!= ( const FMeshApproximationSettings& Other ) const	Inequality.	MeshMerge/MeshApproximationSettings.h
bool operator== ( const FMeshApproximationSettings& Other ) const	Equality operator.	MeshMerge/MeshApproximationSettings.h

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Syntax

Variables

Public

Functions

Public

Operators