FSkeletalMeshOptimizationSettings Struct Reference

FSkeletalMeshOptimizationSettings - The settings used to optimize a skeletal mesh LOD. More...

Public Member Functions
Functions
void	SetbRemapMorphTargets (bool Value)
	Remap the morph targets from the base LOD onto the reduce LOD.
void	SetbRecalcNormals (bool Value)
	Whether Normal smoothing groups should be preserved. If true then Hard Edge Angle (NormalsThreshold) is used *.
void	SetbEnforceBoneBoundaries (bool Value)
	Penalize edge collapse between vertices that have different major bones. This will help articulated segments like tongues but can lead to undesirable results under extreme simplification.
void	SetbMergeCoincidentVertBones (bool Value)
	If enabled this option make sure vertices that share the same location (e.g. UV boundaries) have the same bone weights. This can fix cracks when the characters animate.
void	SetbLockEdges (bool Value)
	Preserve cuts in the mesh surface by locking vertices in place. Increases the quality of the simplified mesh at edges at the cost of more triangles.
void	SetbLockColorBounaries (bool Value)
	Disallow edge collapse when the vertices do not have a common color.
void	SetbImproveTrianglesForCloth (bool Value)
	Better distribution of triangles on 2d meshes, such as flat cloth, but at the cost of potentially worse UVs in those areas. This generally has little or no effect for mesh regions that aren't laid out on a plane intersecting the origin such as the xy-plane. When this is disabled, the planar regions may simplify to fewer large triangles.
FSkeletalMeshOptimizationSettings &	opAssign (FSkeletalMeshOptimizationSettings Other)

Public Attributes
FSkeletalMeshOptimizationSettings
SkeletalMeshOptimizationImportance	SilhouetteImportance
	How important the shape of the geometry is.
float32	VolumeImportance
	Default value of 1 attempts to preserve volume. Smaller values will loose volume by flattening curved surfaces, and larger values will accentuate curved surfaces.
SkeletalMeshOptimizationImportance	TextureImportance
	How important texture density is.
float32	WeldingThreshold
	The welding threshold distance. Vertices under this distance will be welded.
SkeletalMeshOptimizationImportance	ShadingImportance
	How important shading quality is.
SkeletalMeshOptimizationImportance	SkinningImportance
	How important skinning quality is.
float32	NormalsThreshold
	If the angle between two triangles are above this value, the normals will not be smooth over the edge between those two triangles. Set in degrees. This is only used when bRecalcNormals is set to true.
int	MaxBonesPerVertex
	Maximum number of bones that can be assigned to each vertex.
int	BaseLOD
	Base LOD index to generate this LOD. By default, we generate from LOD 0.
ReductionMethod
uint	MaxNumOfTrianglesPercentage
	The maximum number of triangles to retain when using percentage termination criterion.
uint	MaxNumOfVertsPercentage
	The maximum number of vertices to retain when using percentage termination criterion.
uint	MaxNumOfTriangles
	The maximum number of triangles to retain.
float32	MaxDeviationPercentage
	If ReductionMethod equals MaxDeviation this value is the maximum deviation from the base mesh as a percentage of the bounding sphere. In code, it ranges from [0, 1]. In the editor UI, it ranges from [0, 100].
uint	MaxNumOfVerts
	The maximum number of vertices to retain.
float32	NumOfVertPercentage
	The percentage of vertices to retain as a ratio, e.g. 0.1 indicates 10 percent.
SkeletalMeshOptimizationType	ReductionMethod
	The method to use when optimizing the skeletal mesh LOD.
float32	NumOfTrianglesPercentage
	The percentage of triangles to retain as a ratio, e.g. 0.1 indicates 10 percent.
SkeletalMeshTerminationCriterion	TerminationCriterion
	The method to use when optimizing the skeletal mesh LOD.

Detailed Description

FSkeletalMeshOptimizationSettings - The settings used to optimize a skeletal mesh LOD.

Member Function Documentation

opAssign()

FSkeletalMeshOptimizationSettings & opAssign

(

FSkeletalMeshOptimizationSettings

Other

)

SetbEnforceBoneBoundaries()

void SetbEnforceBoneBoundaries

(

bool

Value

)

Penalize edge collapse between vertices that have different major bones. This will help articulated segments like tongues but can lead to undesirable results under extreme simplification.

SetbImproveTrianglesForCloth()

void SetbImproveTrianglesForCloth

(

bool

Value

)

Better distribution of triangles on 2d meshes, such as flat cloth, but at the cost of potentially worse UVs in those areas. This generally has little or no effect for mesh regions that aren't laid out on a plane intersecting the origin such as the xy-plane. When this is disabled, the planar regions may simplify to fewer large triangles.

SetbLockColorBounaries()

void SetbLockColorBounaries

(

bool

Value

)

Disallow edge collapse when the vertices do not have a common color.

SetbLockEdges()

void SetbLockEdges

(

bool

Value

)

Preserve cuts in the mesh surface by locking vertices in place. Increases the quality of the simplified mesh at edges at the cost of more triangles.

SetbMergeCoincidentVertBones()

void SetbMergeCoincidentVertBones

(

bool

Value

)

If enabled this option make sure vertices that share the same location (e.g. UV boundaries) have the same bone weights. This can fix cracks when the characters animate.

SetbRecalcNormals()

void SetbRecalcNormals

(

bool

Value

)

Whether Normal smoothing groups should be preserved. If true then Hard Edge Angle (NormalsThreshold) is used *.

SetbRemapMorphTargets()

void SetbRemapMorphTargets

(

bool

Value

)

Remap the morph targets from the base LOD onto the reduce LOD.

Member Data Documentation

BaseLOD

int BaseLOD

Base LOD index to generate this LOD. By default, we generate from LOD 0.

MaxBonesPerVertex

int MaxBonesPerVertex

Maximum number of bones that can be assigned to each vertex.

MaxDeviationPercentage

float32 MaxDeviationPercentage

If ReductionMethod equals MaxDeviation this value is the maximum deviation from the base mesh as a percentage of the bounding sphere. In code, it ranges from [0, 1]. In the editor UI, it ranges from [0, 100].

MaxNumOfTriangles

uint MaxNumOfTriangles

The maximum number of triangles to retain.

MaxNumOfTrianglesPercentage

uint MaxNumOfTrianglesPercentage

The maximum number of triangles to retain when using percentage termination criterion.

MaxNumOfVerts

uint MaxNumOfVerts

The maximum number of vertices to retain.

MaxNumOfVertsPercentage

uint MaxNumOfVertsPercentage

The maximum number of vertices to retain when using percentage termination criterion.

NormalsThreshold

float32 NormalsThreshold

If the angle between two triangles are above this value, the normals will not be smooth over the edge between those two triangles. Set in degrees. This is only used when bRecalcNormals is set to true.

NumOfTrianglesPercentage

float32 NumOfTrianglesPercentage

The percentage of triangles to retain as a ratio, e.g. 0.1 indicates 10 percent.

NumOfVertPercentage

float32 NumOfVertPercentage

The percentage of vertices to retain as a ratio, e.g. 0.1 indicates 10 percent.

ReductionMethod

SkeletalMeshOptimizationType ReductionMethod

The method to use when optimizing the skeletal mesh LOD.

ShadingImportance

SkeletalMeshOptimizationImportance ShadingImportance

How important shading quality is.

SilhouetteImportance

SkeletalMeshOptimizationImportance SilhouetteImportance

How important the shape of the geometry is.

SkinningImportance

SkeletalMeshOptimizationImportance SkinningImportance

How important skinning quality is.

TerminationCriterion

SkeletalMeshTerminationCriterion TerminationCriterion

The method to use when optimizing the skeletal mesh LOD.

TextureImportance

SkeletalMeshOptimizationImportance TextureImportance

How important texture density is.

VolumeImportance

float32 VolumeImportance

Default value of 1 attempts to preserve volume. Smaller values will loose volume by flattening curved surfaces, and larger values will accentuate curved surfaces.

WeldingThreshold

float32 WeldingThreshold

The welding threshold distance. Vertices under this distance will be welded.