FMeshShapeGenerator

Base class for triangle mesh generators (eg like to generate sphere, cylinder, etc) Subclasses must implement [Generate()](API\Editor\DetailCustomizations\EPropertyEditorGuidActions__Type)

API > API/Runtime > API/Runtime/GeometryCore > API/Runtime/GeometryCore/Generators

Inheritance Hierarchy

References

   
Module GeometryCore
Header /Engine/Source/Runtime/GeometryCore/Public/Generators/MeshShapeGenerator.h
Include #include "Generators/MeshShapeGenerator.h"

Syntax

class FMeshShapeGenerator

Remarks

Base class for triangle mesh generators (eg like to generate sphere, cylinder, etc) Subclasses must implement Generate()

Variables

  Type Name Description
Public variable bool bReverseOrientation If true, reverse orientation of created mesh
Public variable TArray< int > NormalParentVertex Parent vertex index for each Normal. Same length as Normals array.
Public variable TArray< FVector3f > Normals Array of Normals.
Public variable TArray< FIndex3i > TriangleNormals Array of triangle corner Normals, stored as tuples of indices into Normals array.
Public variable TArray< int > TrianglePolygonIDs Array of per-triangle integer polygon IDs. Same length as Triangles array.
Public variable TArray< FIndex3i > Triangles Array of triangle corner positions, stored as tuples of indices into Vertices array
Public variable TArray< FIndex3i > TriangleUVs Array of triangle corner UVs, stored as tuples of indices into UVs array.
Public variable TArray< int > UVParentVertex Parent vertex index for each UV. Same length as UVs array.
Public variable TArray< FVector2f > UVs Array of UV positions.
Public variable TArray< FVector3d > Vertices Array of vertex positions

Destructors

  Type Name Description
Public function Virtual    

Functions

  Type Name Description
Public function int

AppendNormal ( const FVector3f& Normal,
int ParentVertex
)

  
Public function int

AppendTriangle ( int A,
int B,
int C
)

  
Public function int

AppendUV ( const FVector2f& UV,
int ParentVertex
)

  
Public function int

AppendVertex ( const FVector3d& Position
)

 Append a new vertex at the given Position
Public function Static FVector2f

BilinearInterp ( const FVector2f& v00,
const FVector2f& v10,
const FVector2f& v11,
const FVector2f& v01,
float tx,
float ty
)

  
Public function Static FVector2d

BilinearInterp ( const FVector2d& v00,
const FVector2d& v10,
const FVector2d& v11,
const FVector2d& v01,
double tx,
double ty
)

  
Public function Static FVector3d

BilinearInterp ( const FVector3d& v00,
const FVector3d& v10,
const FVector3d& v11,
const FVector3d& v01,
double tx,
double ty
)

  
Public function void

ExtendBufferSizes ( int AddVertices,
int AddTriangles,
int AddUVs,
int AddNormals
)

 Extends the various internal buffers to the correct sizes for the given additional element counts
Public function FMeshShapeGenerator & Subclasses implement this to generate mesh
Public function Const bool  
Public function Static FVector3i

LinearInterp ( const FVector3i& a,
const FVector3i& b,
double t
)

  
Public function void

Reset ()

 Clear arrays so that Generate() can be run again
Public function void

SetBufferSizes ( int NumVertices,
int NumTriangles,
int NumUVs,
int NumNormals
)

 Set the various internal buffers to the correct sizes for the given element counts
Public function void

SetNormal ( int Index,
const FVector3f& Normal,
int ParentVertex
)

 Set Normal at Index to given value with given ParentVertex
Public function void

SetTriangle ( int Index,
int A,
int B,
int C,
bool bClockwiseOverride
)

  
Public function void

SetTriangle ( int Index,
const FIndex3i& Tri
)

  
Public function void

SetTriangle ( int Index,
int A,
int B,
int C
)

  
Public function void

SetTriangleNormals ( int Index,
int A,
int B,
int C
)

  
Public function void

SetTriangleNormals ( int Index,
int A,
int B,
int C,
bool bClockwiseOverride
)

  
Public function void

SetTriangleNormals ( int Index,
const FIndex3i& Tri
)

  
Public function void

SetTrianglePolygon ( int Index,
int PolygonID
)

  
Public function void

SetTriangleUVs ( int Index,
const FIndex3i& Tri
)

  
Public function void

SetTriangleUVs ( int Index,
int A,
int B,
int C,
bool bClockwiseOverride
)

  
Public function void

SetTriangleUVs ( int Index,
int A,
int B,
int C
)

  
Public function void

SetTriangleWithMatchedUVNormal ( int Index,
int A,
int B,
int C
)

 Set triangle and UVs and normals with matching indices Convenience function for shapes with no uv or normal seams
Public function void

SetUV ( int Index,
const FVector2f& UV,
int ParentVertex
)

 Set UV at Index to given value with given ParentVertex
Public function void

SetVertex ( int Index,
const FVector3d& Position
)

 Set vertex at Index to given Position

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