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  3. TIsosurfaceStuffing

TIsosurfaceStuffing

API > API/Plugins > API/Plugins/TetMeshing > API/Plugins/TetMeshing/Generate

Inheritance Hierarchy

References

   
Module TetMeshing
Header /Engine/Plugins/Experimental/TetMeshing/Source/TetMeshing/Public/Generate/IsosurfaceStuffing.h
Include #include "Generate/IsosurfaceStuffing.h"

Syntax

template<typename RealType, ERootFindingMethod RootMethod>  
class TIsosurfaceStuffing : public UE::Geometry::TTetMeshGenerator< RealType >

Variables

  Type Name Description
Public variable UE::Math::TBox< RealType > Bounds Parameters for generation.
Public variable RealType CellSize  
Protected variable TMap< int64, FCutData > ComputedCutPts  
Protected variable TMap< int64, FGridPtData > ComputedGridPts  
Public variable TFunction< RealType(TVec3)> Implicit Implicit is the implicit function defining the desired output shape, typically a fast winding or signed distance function It should be larger than IsoValue inside the desired shape, and smaller than IsoValue outside
Public variable RealType IsoValue  
Public variable int32 RootModeSteps Number of steps to take when root finding.

Functions

  Type Name Description
Protected function Const TVec3

ComputeEdgeCutPos ( TVec3 APos,
RealType AVal,
TVec3 BPos,
RealType BVal
)

  
Protected function Static RealType

GetAlpha ( const TVec3& APos,
const TVec3& BPos,
const TVec3& Between
)

  
Protected function Static constexpr int64

GetCornerEdgeTag ( FIntVector3 Delta
)

 Delta should be 0 or 1 for each coordinate.
Protected function bool

GetCutData ( int64 EdgeID,
const FGridPt& A,
const FGridPt& B,
const TVec3& APos,
const TVec3& BPos,
int16 LabelA,
int16 LabelB,
RealType AlphaThreshold,
FCutData& CutOut,
RealType& AlphaOut
)

  
Protected function Static int64 Return a unique ID for the BCC edge connecting A to B (note: assumes A,B are connected in the BCC lattice)
Protected function Static void

GetEdges ( FGridPt Pt,
int64 EdgeIDsOut,
FGridPt OtherPtOut
)

  
Protected function Static int64

GetGridID ( const FGridPt& Pt
)

  
Protected function Static int64

GetGridID ( int32 X,
int32 Y,
int32 Z,
bool bIsCenter
)

  
Protected function Static int64

GetGridID ( FIntVector3 Idx,
bool bIsCenter
)

  
Protected function FGridPtData

GetGridPtData ( const FGridPt& Pt,
TVec3& PosOut,
bool bAllowWarp
)

  
Protected function Static constexpr int64

GetMajorAxisEdgeTag ( int64 Axis
)

 Axis should be 0, 1, or 2 for X, Y, or Z.
Protected function int32

GetOrAddCutVertex ( const FGridPt& A,
const FGridPt& B
)

  
Protected function Const TVec3

GetUnwarpedGridPos ( const FGridPt& Pt
)

 Get grid coordinates s.t. Cell 0,0,0's center is at the minimum corner of Bounds.
Protected function Const int16

ImplicitValueToLabel ( RealType Value
)

 TODO: Update this for the multi-label case?
Protected function Const RealType

LabelToImplicitValue ( int16 Label
)

 TODO: Note this is incompatible with Lerp-based iso-surface finding.
Protected function void TODO: should this take the pre-fetched edge data as well? Stuff output tetrahedra into the given background tetrahedron

Overridden from TTetMeshGenerator

  Type Name Description
Public function Virtual TIsosurfaceStuffing & Subclasses implement this to generate mesh
Public function Virtual void

Reset ()

 Clear arrays so that Generate() can be run again

Classes

  Type Name Description
Protected struct FCutData    
Protected struct FGridPt    
Protected struct FGridPtData    

Typedefs

Name Description
TVec3  

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