#include <Grid.h>

Inheritance diagram for UE::CADKernel::FGrid:

Public Member Functions
	FGrid (FTopologicalFace &InFace, FModelMesh &InShellMesh)

virtual	~FGrid ()=default

void	DefineCuttingParameters ()

void	DefineCuttingParameters (EIso Iso, FCuttingGrid &Neighbors)

bool	GeneratePointCloud ()

void	ProcessPointCloud ()

constexpr const int32	GetCuttingCount (EIso Iso) const

const int32	GetTotalCuttingCount () const

const double	GetTolerance (EIso Iso) const

const bool	IsNodeInsideAndMeshable (int32 Index) const

const bool	IsNodeInsideButTooCloseToLoop (int32 Index) const

const bool	IsNodeFarFromFace (int32 Index) const

const bool	IsNodeOutsideFace (int32 Index) const

const bool	IsNodeInsideAndCloseToLoop (int32 Index) const

const bool	IsNodeOusideFaceButClose (int32 Index) const

void	SetNodeInside (int32 Index)

const int32	InnerNodesCount () const

const bool	IsNodeCloseToLoop (int32 Index) const

const bool	IsNodeTooCloseToLoop (int32 Index) const

void	SetCloseToLoop (int32 Index)

void	SetTooCloseToLoop (int32 Index)

void	ResetInsideLoop (int32 Index)

void	SetInner2DPoint (EGridSpace Space, int32 Index, const FVector2d &NewCoordinate)

const FVector3f &	GetPointNormal (int32 IndexU, int32 IndexV) const

const FVector3f &	GetPointNormal (int32 Index) const

const TArray< double > &	GetCuttingCoordinatesAlongIso (EIso Iso) const

const FCoordinateGrid &	GetCuttingCoordinates () const

TArray< FVector3f > &	GetNormals ()

const TArray< TArray< int32 > > &	GetNodeIdsOfFaceLoops () const

const FVector2d &	GetLoop2DPoint (EGridSpace Space, int32 LoopIndex, int32 Index) const

void	SetLoop2DPoint (EGridSpace Space, int32 LoopIndex, int32 Index, const FVector2d &NewCoordinate)

const FVector &	GetLoop3DPoint (int32 LoopIndex, int32 Index) const

const int32	GetLoopCount () const

const TArray< TArray< FVector2d > > &	GetLoops2D (EGridSpace Space) const

TArray< TArray< FVector > > &	GetLoops3D ()

const TArray< TArray< FVector > > &	GetLoops3D () const

const TArray< TArray< FVector3f > > &	GetLoopNormals () const

void	UVIndexFromGlobalIndex (int32 GLobalIndex, int32 &OutIndexU, int32 &OutIndexV) const

double	GetMinElementSize () const

Public Member Functions inherited from UE::CADKernel::FGridBase
	FGridBase (FTopologicalFace &InFace)

virtual	~FGridBase ()

void	TransformPoints (EGridSpace DestinationSpace, const TArray< FVector2d > &InPointsToScale, TArray< FVector2d > &OutScaledPoints) const

bool	ScaleGrid ()

double	GetTolerance () const

const FVector2d &	GetInner2DPoint (EGridSpace Space, int32 Index) const

const FVector2d &	GetInner2DPoint (EGridSpace Space, int32 IndexU, int32 IndexV) const

const FVector &	GetInner3DPoint (int32 Index) const

constexpr const TArray< double > &	GetUniformCuttingCoordinatesAlongIso (EIso Iso) const

const FCoordinateGrid &	GetUniformCuttingCoordinates () const

TArray< FVector > &	GetInner3DPoints ()

const TArray< FVector > &	GetInner3DPoints () const

const TArray< FVector2d > &	GetInner2DPoints (EGridSpace Space) const

const FTopologicalFace &	GetFace () const

FTopologicalFace &	GetFace ()

int32	GobalIndex (int32 IndexU, int32 IndexV) const

Public Member Functions inherited from UE::CADKernel::FHaveStates
	FHaveStates ()

void	Serialize (FCADKernelArchive &Ar)

void	ResetElementStatus ()

bool	HasMarker1 () const

bool	HasMarker2 () const

bool	HasMarker1And2 () const

bool	HasMarker1Or2 () const

void	SetMarker1 () const

void	SetMarker2 () const

void	ResetMarker1 () const

void	ResetMarker2 () const

void	ResetMarkers () const

bool	IsDeleted () const

void	SetDeletedMarker () const

void	ResetDeleted () const

virtual bool	IsDeletedOrDegenerated () const

virtual bool	IsDegenerated () const

virtual void	SetAsDegenerated () const

virtual void	ResetDegenerated () const

void	SetWaitingMarker () const

void	ResetWaitingMarker () const

virtual bool	IsWaiting () const

void	SetProcessedMarker () const

void	ResetProcessedMarker () const

virtual bool	IsProcessed () const

virtual bool	IsProcessedDeletedOrDegenerated () const

void	SetToProcessMarker () const

void	ResetToProcessMarker () const

virtual bool	IsToProcess () const

virtual bool	IsNotToProcess () const

virtual bool	IsNotToOrAlreadyProcess () const

Protected Member Functions
virtual const FCoordinateGrid &	GetCoordinateGrid () const override

void	ScaleLoops ()

void	FindInnerFacePoints ()

void	FindPointsCloseToLoop ()

void	RemovePointsCloseToLoop ()

void	GetPreferredUVCuttingParametersFromLoops (FCuttingGrid &CuttingFromLoops)

bool	GetMeshOfLoops ()

void	GetMeshOfLoop (const FTopologicalLoop &Loop)

void	GetMeshOfThinZone (const FThinZone2D &ThinZone)

bool	CheckIfExternalLoopIsDegenerate () const

bool	CheckIf2DGridIsDegenerate () const

Protected Member Functions inherited from UE::CADKernel::FGridBase
void	EvaluatePointGrid (const FCoordinateGrid &CoordinateGrid, bool bWithNormals)

void	ComputeNewCoordinate (const TArray< FVector2d > &NewGrid, int32 IndexU, int32 IndexV, const FVector2d &InPoint, FVector2d &OutNewScaledPoint) const

Protected Attributes
FCoordinateGrid &	CoordinateGrid

const FSurfacicTolerance	FaceTolerance

const double	MinimumElementSize

FModelMesh &	MeshModel

TArray< TArray< FVector2d > >	FaceLoops2D [EGridSpace::EndGridSpace]

TArray< TArray< FVector > >	FaceLoops3D

TArray< TArray< FVector3f > >	NormalsOfFaceLoops

TArray< TArray< int32 > >	NodeIdsOfFaceLoops

int32	CountOfInnerNodes = 0

double	MinOfMaxElementSize = 0

TArray< ENodeMarker >	NodeMarkers

Protected Attributes inherited from UE::CADKernel::FGridBase
FTopologicalFace &	Face

const double	Tolerance3D

int32	CuttingCount [2] = { 0 , 0 }

int32	CuttingSize = 0

FCoordinateGrid	UniformCuttingCoordinates

TArray< FVector2d >	Points2D [EGridSpace::EndGridSpace]

TArray< FVector >	Points3D

TArray< FVector3f >	Normals

Protected Attributes inherited from UE::CADKernel::FHaveStates
EHaveStates	States

Additional Inherited Members
Public Attributes inherited from UE::CADKernel::FGridBase
FGridChronos	Chronos

Constructor & Destructor Documentation

◆ FGrid()

UE::CADKernel::FGrid::FGrid	(	FTopologicalFace &	InFace,
		FModelMesh &	InShellMesh
	)

◆ ~FGrid()

virtual UE::CADKernel::FGrid::~FGrid ( )

virtualdefault

Member Function Documentation

◆ CheckIf2DGridIsDegenerate()

bool UE::CADKernel::FGrid::CheckIf2DGridIsDegenerate ( ) const

protected

Returns: true if along an Iso, all (U(i+1) - U(i)) < FaceTolerance

◆ CheckIfExternalLoopIsDegenerate()

bool UE::CADKernel::FGrid::CheckIfExternalLoopIsDegenerate ( ) const

protected

Returns: true if the grid is not consistent to build a mesh as composed of only two border nodes.

◆ DefineCuttingParameters() [1/2]

void UE::CADKernel::FGrid::DefineCuttingParameters ( )

Defines the cutting coordinate of the grid according to mesh criteria and the existing mesh of bordering edges (loop's edges)

See also: GetPreferredUVCoordinatesFromNeighbours

◆ DefineCuttingParameters() [2/2]

void UE::CADKernel::FGrid::DefineCuttingParameters	(	EIso	Iso,
		FCuttingGrid &	Neighbors
	)

◆ FindInnerFacePoints()

void UE::CADKernel::FGrid::FindInnerFacePoints ( )

protected

See also: ProcessPointClound (called in ProcessPointClound)

◆ FindPointsCloseToLoop()

void UE::CADKernel::FGrid::FindPointsCloseToLoop ( )

protected

Define if an inner node is close to a loop i.e. if the loop cross the cell [[IndexU - 1, IndexU], [IndexV - 1, IndexV]], each corner node of the cell is close to the loop

This algorithm is inspired of Bresenham's line algorithm The loop is traversed segment by segment For each segment, according to the slop of the segment, each cell intersecting the segment is selected (FindIntersectionsCaseSlope_) i.e. each corner node of the cell is flagged IsCloseToLoop (SetCellCloseToLoop)

See also: SlopeUtils; IsNodeCloseToLoop; ProcessPointCloud (called in ProcessPointClound)

◆ GeneratePointCloud()

bool UE::CADKernel::FGrid::GeneratePointCloud ( )

Computes the 2d Points, 3D points and Normals of the grid. call of DefineCuttingParameters is mandatory called before

Returns: false if the grid is degenerated

◆ GetCoordinateGrid()

virtual const FCoordinateGrid & UE::CADKernel::FGrid::GetCoordinateGrid ( ) const

inlineoverrideprotectedvirtual

Implements UE::CADKernel::FGridBase.

◆ GetCuttingCoordinates()

const FCoordinateGrid & UE::CADKernel::FGrid::GetCuttingCoordinates ( ) const

inline

◆ GetCuttingCoordinatesAlongIso()

const TArray< double > & UE::CADKernel::FGrid::GetCuttingCoordinatesAlongIso ( EIso Iso ) const

inline

◆ GetCuttingCount()

constexpr const int32 UE::CADKernel::FGrid::GetCuttingCount ( EIso Iso ) const

inlineconstexpr

◆ GetLoop2DPoint()

const FVector2d & UE::CADKernel::FGrid::GetLoop2DPoint	(	EGridSpace	Space,
		int32	LoopIndex,
		int32	Index
	)		const

inline

◆ GetLoop3DPoint()

const FVector & UE::CADKernel::FGrid::GetLoop3DPoint	(	int32	LoopIndex,
		int32	Index
	)		const

inline

◆ GetLoopCount()

const int32 UE::CADKernel::FGrid::GetLoopCount ( ) const

inline

◆ GetLoopNormals()

const TArray< TArray< FVector3f > > & UE::CADKernel::FGrid::GetLoopNormals ( ) const

inline

Returns: the array of array of normal of the points of the loops

◆ GetLoops2D()

const TArray< TArray< FVector2d > > & UE::CADKernel::FGrid::GetLoops2D ( EGridSpace Space ) const

inline

Returns: the array of array of 2d points of the loops according to the defined grid space

◆ GetLoops3D() [1/2]

TArray< TArray< FVector > > & UE::CADKernel::FGrid::GetLoops3D ( )

inline

Returns: the array of array of 3d points of the loops

◆ GetLoops3D() [2/2]

const TArray< TArray< FVector > > & UE::CADKernel::FGrid::GetLoops3D ( ) const

inline

Returns: the array of array of 3d points of the loops

◆ GetMeshOfLoop()

void UE::CADKernel::FGrid::GetMeshOfLoop ( const FTopologicalLoop & Loop )

protected

◆ GetMeshOfLoops()

bool UE::CADKernel::FGrid::GetMeshOfLoops ( )

protected

@ return false if the mesh of the loop is degenerated

◆ GetMeshOfThinZone()

void UE::CADKernel::FGrid::GetMeshOfThinZone ( const FThinZone2D & ThinZone )

protected

◆ GetMinElementSize()

double UE::CADKernel::FGrid::GetMinElementSize ( ) const

inline

Returns: the minimal size of the mesh elements according to 3d geometric tolerance

◆ GetNodeIdsOfFaceLoops()

const TArray< TArray< int32 > > & UE::CADKernel::FGrid::GetNodeIdsOfFaceLoops ( ) const

inline

◆ GetNormals()

TArray< FVector3f > & UE::CADKernel::FGrid::GetNormals ( )

inline

Returns: the array of normal of the points of the grid

◆ GetPointNormal() [1/2]

const FVector3f & UE::CADKernel::FGrid::GetPointNormal ( int32 Index ) const

inline

Returns: the normal of the surface at the point at the Index of the grid

◆ GetPointNormal() [2/2]

const FVector3f & UE::CADKernel::FGrid::GetPointNormal	(	int32	IndexU,
		int32	IndexV
	)		const

inline

Returns: the normal of the surface at the point at the Index of the grid

◆ GetPreferredUVCuttingParametersFromLoops()

void UE::CADKernel::FGrid::GetPreferredUVCuttingParametersFromLoops ( FCuttingGrid & CuttingFromLoops )

protected

Gets the cutting coordinates of the existing mesh of bordering edges (loop's edges)

See also: DefineCuttingParameters (called in DefineCuttingParameters)

◆ GetTolerance()

const double UE::CADKernel::FGrid::GetTolerance ( EIso Iso ) const

inline

◆ GetTotalCuttingCount()

const int32 UE::CADKernel::FGrid::GetTotalCuttingCount ( ) const

inline

Return the number of points (inner and outer points) of the grid (i.e. CuttingCount[IsoU] x CuttingCount[IsoV]).

◆ InnerNodesCount()

const int32 UE::CADKernel::FGrid::InnerNodesCount ( ) const

inline

Returns: the count of inner nodes

◆ IsNodeCloseToLoop()

const bool UE::CADKernel::FGrid::IsNodeCloseToLoop ( int32 Index ) const

inline

Returns: true if the node is close to a loop i.e. the loop cross the space [[IndexU - 1, IndexU + 1], [IndexV - 1, IndexV + 1]]

◆ IsNodeFarFromFace()

const bool UE::CADKernel::FGrid::IsNodeFarFromFace ( int32 Index ) const

inline

Returns: true if the bits EPointMarker::IsInside, EPointMarker::IsInsideButTooCloseToLoop and EPointMarker::IsCloseToLoop are alls equal to 0

◆ IsNodeInsideAndCloseToLoop()

const bool UE::CADKernel::FGrid::IsNodeInsideAndCloseToLoop ( int32 Index ) const

inline

◆ IsNodeInsideAndMeshable()

const bool UE::CADKernel::FGrid::IsNodeInsideAndMeshable ( int32 Index ) const

inline

Returns: true if the node is inner the external loop and outer the inner loops and not too close

◆ IsNodeInsideButTooCloseToLoop()

const bool UE::CADKernel::FGrid::IsNodeInsideButTooCloseToLoop ( int32 Index ) const

inline

◆ IsNodeOusideFaceButClose()

const bool UE::CADKernel::FGrid::IsNodeOusideFaceButClose ( int32 Index ) const

inline

Returns: true if the bits EPointMarker::IsInside and EPointMarker::IsInsideButTooCloseToLoop are booth equal to 0 and EPointMarker::IsCloseToLoop is equal to 1

◆ IsNodeOutsideFace()

const bool UE::CADKernel::FGrid::IsNodeOutsideFace ( int32 Index ) const

inline

Returns: true if the bits EPointMarker::IsInside, EPointMarker::IsInsideButTooCloseToLoop and EPointMarker::IsCloseToLoop are alls equal to 0

◆ IsNodeTooCloseToLoop()

const bool UE::CADKernel::FGrid::IsNodeTooCloseToLoop ( int32 Index ) const

inline

◆ ProcessPointCloud()

void UE::CADKernel::FGrid::ProcessPointCloud ( )

Process the generated point cloud to compute the scaled parametric spaces and to identify outer points of the face

See also: IsNodeInsideFace; Points2D

◆ RemovePointsCloseToLoop()

void UE::CADKernel::FGrid::RemovePointsCloseToLoop ( )

protected

Find all node close to the boundary. For each node, the 3d distance to the boundary is estimated If this distance is bigger than the Tolerance, the node is remove Removing a node can make its neighbor removable, Each removed node make its direct neighbor removable, the process is recursive as long as it is possible to remove a node

See also: ProcessPointClound (called in ProcessPointClound)

◆ ResetInsideLoop()

void UE::CADKernel::FGrid::ResetInsideLoop ( int32 Index )

inline

◆ ScaleLoops()

void UE::CADKernel::FGrid::ScaleLoops ( )

protected

Projects loop's points in the scaled parametric spaces

See also: FaceLoops2D; ProcessPointClound (called in ProcessPointClound)

◆ SetCloseToLoop()

void UE::CADKernel::FGrid::SetCloseToLoop ( int32 Index )

inline

◆ SetInner2DPoint()

void UE::CADKernel::FGrid::SetInner2DPoint	(	EGridSpace	Space,
		int32	Index,
		const FVector2d &	NewCoordinate
	)

inline

◆ SetLoop2DPoint()

void UE::CADKernel::FGrid::SetLoop2DPoint	(	EGridSpace	Space,
		int32	LoopIndex,
		int32	Index,
		const FVector2d &	NewCoordinate
	)

inline

◆ SetNodeInside()

void UE::CADKernel::FGrid::SetNodeInside ( int32 Index )

inline

◆ SetTooCloseToLoop()

void UE::CADKernel::FGrid::SetTooCloseToLoop ( int32 Index )

inline

◆ UVIndexFromGlobalIndex()

void UE::CADKernel::FGrid::UVIndexFromGlobalIndex	(	int32	GLobalIndex,
		int32 &	OutIndexU,
		int32 &	OutIndexV
	)		const

inline

Returns: the Index of the position in the arrays of a point [IndexU, IndexV] of the grid

Member Data Documentation

◆ CoordinateGrid

FCoordinateGrid& UE::CADKernel::FGrid::CoordinateGrid

protected

◆ CountOfInnerNodes

int32 UE::CADKernel::FGrid::CountOfInnerNodes = 0

protected

count of node inside the face i.e. node inside the external loop and outer the inner loops

◆ FaceLoops2D

TArray<TArray<FVector2d> > UE::CADKernel::FGrid::FaceLoops2D[EGridSpace::EndGridSpace]

protected

2D Coordinate of Loop's nodes in each space

◆ FaceLoops3D

TArray<TArray<FVector> > UE::CADKernel::FGrid::FaceLoops3D

protected

3D Coordinate of Loop nodes in each space

◆ FaceTolerance

const FSurfacicTolerance UE::CADKernel::FGrid::FaceTolerance

protected

◆ MeshModel

FModelMesh& UE::CADKernel::FGrid::MeshModel

protected

◆ MinimumElementSize

const double UE::CADKernel::FGrid::MinimumElementSize

protected

◆ MinOfMaxElementSize

double UE::CADKernel::FGrid::MinOfMaxElementSize = 0

protected

◆ NodeIdsOfFaceLoops

TArray<TArray<int32> > UE::CADKernel::FGrid::NodeIdsOfFaceLoops

protected

◆ NodeMarkers

TArray<ENodeMarker> UE::CADKernel::FGrid::NodeMarkers

protected

Array to flag each points as inside, close, ... the face

See also: IsNode...,

◆ NormalsOfFaceLoops

TArray<TArray<FVector3f> > UE::CADKernel::FGrid::NormalsOfFaceLoops

protected

Surface Normal at each boundary nodes

The documentation for this class was generated from the following files:

Engine/Source/Runtime/Datasmith/CADKernel/Base/Private/Mesh/Structure/Grid.h
Engine/Source/Runtime/Datasmith/CADKernel/Base/Private/Mesh/Structure/Grid.cpp

Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Constructor & Destructor Documentation

◆ FGrid()

◆ ~FGrid()

Member Function Documentation

◆ CheckIf2DGridIsDegenerate()

◆ CheckIfExternalLoopIsDegenerate()

◆ DefineCuttingParameters() [1/2]

◆ DefineCuttingParameters() [2/2]

◆ FindInnerFacePoints()

◆ FindPointsCloseToLoop()

◆ GeneratePointCloud()

◆ GetCoordinateGrid()

◆ GetCuttingCoordinates()

◆ GetCuttingCoordinatesAlongIso()

◆ GetCuttingCount()

◆ GetLoop2DPoint()

◆ GetLoop3DPoint()

◆ GetLoopCount()

◆ GetLoopNormals()

◆ GetLoops2D()

◆ GetLoops3D() [1/2]

◆ GetLoops3D() [2/2]

◆ GetMeshOfLoop()

◆ GetMeshOfLoops()

◆ GetMeshOfThinZone()

◆ GetMinElementSize()

◆ GetNodeIdsOfFaceLoops()

◆ GetNormals()

◆ GetPointNormal() [1/2]

◆ GetPointNormal() [2/2]

◆ GetPreferredUVCuttingParametersFromLoops()

◆ GetTolerance()

◆ GetTotalCuttingCount()

◆ InnerNodesCount()

◆ IsNodeCloseToLoop()

◆ IsNodeFarFromFace()

◆ IsNodeInsideAndCloseToLoop()

◆ IsNodeInsideAndMeshable()

◆ IsNodeInsideButTooCloseToLoop()

◆ IsNodeOusideFaceButClose()

◆ IsNodeOutsideFace()

◆ IsNodeTooCloseToLoop()

◆ ProcessPointCloud()

◆ RemovePointsCloseToLoop()

◆ ResetInsideLoop()

◆ ScaleLoops()

◆ SetCloseToLoop()

◆ SetInner2DPoint()

◆ SetLoop2DPoint()

◆ SetNodeInside()

◆ SetTooCloseToLoop()

◆ UVIndexFromGlobalIndex()

Member Data Documentation

◆ CoordinateGrid

◆ CountOfInnerNodes

◆ FaceLoops2D

◆ FaceLoops3D

◆ FaceTolerance

◆ MeshModel

◆ MinimumElementSize

◆ MinOfMaxElementSize

◆ NodeIdsOfFaceLoops

◆ NodeMarkers

◆ NormalsOfFaceLoops