IntPolyh_MaillageAffinage Class Reference

Low-level algorithm to compute intersection of the surfaces by computing the intersection of their triangulations. More...

#include <IntPolyh_MaillageAffinage.hxx>

Public Member Functions
	IntPolyh_MaillageAffinage (const occ::handle< Adaptor3d_Surface > &S1, const int NbSU1, const int NbSV1, const occ::handle< Adaptor3d_Surface > &S2, const int NbSU2, const int NbSV2, const int PRINT)
	IntPolyh_MaillageAffinage (const occ::handle< Adaptor3d_Surface > &S1, const occ::handle< Adaptor3d_Surface > &S2, const int PRINT)
void	MakeSampling (const int SurfID, NCollection_Array1< double > &theUPars, NCollection_Array1< double > &theVPars)
	Makes the sampling of the surface - Fills the arrays with the parametric values of the sampling points (triangulation nodes).
void	FillArrayOfPnt (const int SurfID)
	Computes points on one surface and fills an array of points; standard (default) method.
void	FillArrayOfPnt (const int SurfID, const bool isShiftFwd)
	isShiftFwd flag is added. The purpose is to define shift of points along normal to the surface in this point. The shift length represents maximal deflection of triangulation. The direction (forward or reversed regarding to normal direction) is defined by isShiftFwd flag. Compute points on one surface and fill an array of points; advanced method
void	FillArrayOfPnt (const int SurfID, const NCollection_Array1< double > &Upars, const NCollection_Array1< double > &Vpars, const double *theDeflTol=nullptr)
	Compute points on one surface and fill an array of points; If given, <theDeflTol> is the deflection tolerance of the given sampling. standard (default) method.
void	FillArrayOfPnt (const int SurfID, const bool isShiftFwd, const NCollection_Array1< double > &Upars, const NCollection_Array1< double > &Vpars, const double *theDeflTol=nullptr)
	isShiftFwd flag is added. The purpose is to define shift of points along normal to the surface in this point. The shift length represents maximal deflection of triangulation. The direction (forward or reversed regarding to normal direction) is defined by isShiftFwd flag. Compute points on one surface and fill an array of points; If given, <theDeflTol> is the deflection tolerance of the given sampling. advanced method
void	FillArrayOfPnt (const int SurfID, const bool isShiftFwd, const IntPolyh_ArrayOfPointNormal &thePoints, const NCollection_Array1< double > &theUPars, const NCollection_Array1< double > &theVPars, const double theDeflTol)
	Fills the array of points for the surface taking into account the shift.
void	CommonBox ()
	Looks for the common box of the surfaces and marks the points of the surfaces inside that common box for possible intersection.
void	CommonBox (const Bnd_Box &B1, const Bnd_Box &B2, double &xMin, double &yMin, double &zMin, double &xMax, double &yMax, double &zMax)
	Compute the common box which is the intersection of the two bounding boxes, and mark the points of the two surfaces that are inside.
void	FillArrayOfEdges (const int SurfID)
	Compute edges from the array of points.
void	FillArrayOfTriangles (const int SurfID)
	Compute triangles from the array of points, and mark the triangles that use marked points by the CommonBox function.
void	CommonPartRefinement ()
	Refine systematicaly all marked triangles of both surfaces.
void	LocalSurfaceRefinement (const int SurfId)
	Refine systematicaly all marked triangles of ONE surface.
void	ComputeDeflections (const int SurfID)
	Compute deflection for all triangles of one surface,and sort min and max of deflections.
void	TrianglesDeflectionsRefinementBSB ()
	Refine both surfaces using BoundSortBox as rejection. The criterions used to refine a triangle are: The deflection The size of the bounding boxes (one surface may be very small compared to the other)
int	TriContact (const IntPolyh_Point &P1, const IntPolyh_Point &P2, const IntPolyh_Point &P3, const IntPolyh_Point &Q1, const IntPolyh_Point &Q2, const IntPolyh_Point &Q3, double &Angle) const
	This function checks if two triangles are in contact or not, return 1 if yes, return 0 if not.
int	TriangleEdgeContact (const int TriSurfID, const int EdgeIndice, const IntPolyh_Triangle &Tri1, const IntPolyh_Triangle &Tri2, const IntPolyh_Point &P1, const IntPolyh_Point &P2, const IntPolyh_Point &P3, const IntPolyh_Point &C1, const IntPolyh_Point &C2, const IntPolyh_Point &C3, const IntPolyh_Point &Pe1, const IntPolyh_Point &Pe2, const IntPolyh_Point &E, const IntPolyh_Point &N, IntPolyh_StartPoint &SP1, IntPolyh_StartPoint &SP2) const
int	StartingPointsResearch (const int T1, const int T2, IntPolyh_StartPoint &SP1, IntPolyh_StartPoint &SP2) const
	From two triangles compute intersection points. If we found more than two intersection points that means that those triangles are coplanar.
int	NextStartingPointsResearch (const int T1, const int T2, const IntPolyh_StartPoint &SPInit, IntPolyh_StartPoint &SPNext) const
	from two triangles and an intersection point I search the other point (if it exists). This function is used by StartPointChain
int	TriangleCompare ()
	Analyse each couple of triangles from the two – array of triangles, to see if they are in contact, and compute the incidence. Then put couples in contact in the array of couples.
int	StartPointsChain (IntPolyh_ArrayOfSectionLines &TSectionLines, IntPolyh_ArrayOfTangentZones &TTangentZones)
	Loop on the array of couples. Compute StartPoints. Try to chain the StartPoints into SectionLines or put the point in the ArrayOfTangentZones if chaining it, is not possible.
int	GetNextChainStartPoint (const IntPolyh_StartPoint &SPInit, IntPolyh_StartPoint &SPNext, IntPolyh_SectionLine &MySectionLine, IntPolyh_ArrayOfTangentZones &TTangentZones, const bool Prepend=false)
	Mainly used by StartPointsChain(), this function try to compute the next StartPoint.
const IntPolyh_ArrayOfPoints &	GetArrayOfPoints (const int SurfID) const
const IntPolyh_ArrayOfEdges &	GetArrayOfEdges (const int SurfID) const
const IntPolyh_ArrayOfTriangles &	GetArrayOfTriangles (const int SurfID) const
int	GetFinTE (const int SurfID) const
int	GetFinTT (const int SurfID) const
Bnd_Box	GetBox (const int SurfID) const
NCollection_List< IntPolyh_Couple > &	GetCouples ()
	This method returns list of couples of contact triangles.
void	SetEnlargeZone (const bool EnlargeZone)
bool	GetEnlargeZone () const
double	GetMinDeflection (const int SurfID) const
	returns FlecheMin
double	GetMaxDeflection (const int SurfID) const
	returns FlecheMax

Detailed Description

Low-level algorithm to compute intersection of the surfaces by computing the intersection of their triangulations.

Constructor & Destructor Documentation

IntPolyh_MaillageAffinage() [1/2]

IntPolyh_MaillageAffinage::IntPolyh_MaillageAffinage	(	const occ::handle< Adaptor3d_Surface > &	S1,
		const int	NbSU1,
		const int	NbSV1,
		const occ::handle< Adaptor3d_Surface > &	S2,
		const int	NbSU2,
		const int	NbSV2,
		const int	PRINT )

IntPolyh_MaillageAffinage() [2/2]

IntPolyh_MaillageAffinage::IntPolyh_MaillageAffinage	(	const occ::handle< Adaptor3d_Surface > &	S1,
		const occ::handle< Adaptor3d_Surface > &	S2,
		const int	PRINT )

Member Function Documentation

CommonBox() [1/2]

void IntPolyh_MaillageAffinage::CommonBox

(

)

Looks for the common box of the surfaces and marks the points of the surfaces inside that common box for possible intersection.

CommonBox() [2/2]

void IntPolyh_MaillageAffinage::CommonBox	(	const Bnd_Box &	B1,
		const Bnd_Box &	B2,
		double &	xMin,
		double &	yMin,
		double &	zMin,
		double &	xMax,
		double &	yMax,
		double &	zMax )

Compute the common box which is the intersection of the two bounding boxes, and mark the points of the two surfaces that are inside.

CommonPartRefinement()

void IntPolyh_MaillageAffinage::CommonPartRefinement

(

)

Refine systematicaly all marked triangles of both surfaces.

ComputeDeflections()

void IntPolyh_MaillageAffinage::ComputeDeflections

(

const int

SurfID

)

Compute deflection for all triangles of one surface,and sort min and max of deflections.

FillArrayOfEdges()

void IntPolyh_MaillageAffinage::FillArrayOfEdges

(

const int

SurfID

)

Compute edges from the array of points.

FillArrayOfPnt() [1/5]

void IntPolyh_MaillageAffinage::FillArrayOfPnt

(

const int

SurfID

)

Computes points on one surface and fills an array of points; standard (default) method.

FillArrayOfPnt() [2/5]

void IntPolyh_MaillageAffinage::FillArrayOfPnt	(	const int	SurfID,
		const bool	isShiftFwd )

isShiftFwd flag is added. The purpose is to define shift of points along normal to the surface in this point. The shift length represents maximal deflection of triangulation. The direction (forward or reversed regarding to normal direction) is defined by isShiftFwd flag. Compute points on one surface and fill an array of points; advanced method

FillArrayOfPnt() [3/5]

void IntPolyh_MaillageAffinage::FillArrayOfPnt	(	const int	SurfID,
		const bool	isShiftFwd,
		const IntPolyh_ArrayOfPointNormal &	thePoints,
		const NCollection_Array1< double > &	theUPars,
		const NCollection_Array1< double > &	theVPars,
		const double	theDeflTol )

Fills the array of points for the surface taking into account the shift.

FillArrayOfPnt() [4/5]

void IntPolyh_MaillageAffinage::FillArrayOfPnt	(	const int	SurfID,
		const bool	isShiftFwd,
		const NCollection_Array1< double > &	Upars,
		const NCollection_Array1< double > &	Vpars,
		const double *	theDeflTol = nullptr )

isShiftFwd flag is added. The purpose is to define shift of points along normal to the surface in this point. The shift length represents maximal deflection of triangulation. The direction (forward or reversed regarding to normal direction) is defined by isShiftFwd flag. Compute points on one surface and fill an array of points; If given, <theDeflTol> is the deflection tolerance of the given sampling. advanced method

FillArrayOfPnt() [5/5]

void IntPolyh_MaillageAffinage::FillArrayOfPnt	(	const int	SurfID,
		const NCollection_Array1< double > &	Upars,
		const NCollection_Array1< double > &	Vpars,
		const double *	theDeflTol = nullptr )

Compute points on one surface and fill an array of points; If given, <theDeflTol> is the deflection tolerance of the given sampling. standard (default) method.

FillArrayOfTriangles()

void IntPolyh_MaillageAffinage::FillArrayOfTriangles

(

const int

SurfID

)

Compute triangles from the array of points, and mark the triangles that use marked points by the CommonBox function.

GetArrayOfEdges()

const IntPolyh_ArrayOfEdges & IntPolyh_MaillageAffinage::GetArrayOfEdges

(

const int

SurfID

)

const

GetArrayOfPoints()

const IntPolyh_ArrayOfPoints & IntPolyh_MaillageAffinage::GetArrayOfPoints

(

const int

SurfID

)

const

GetArrayOfTriangles()

const IntPolyh_ArrayOfTriangles & IntPolyh_MaillageAffinage::GetArrayOfTriangles

(

const int

SurfID

)

const

GetBox()

Bnd_Box IntPolyh_MaillageAffinage::GetBox

(

const int

SurfID

)

const

GetCouples()

NCollection_List< IntPolyh_Couple > & IntPolyh_MaillageAffinage::GetCouples

(

)

This method returns list of couples of contact triangles.

GetEnlargeZone()

bool IntPolyh_MaillageAffinage::GetEnlargeZone

(

)

const

GetFinTE()

int IntPolyh_MaillageAffinage::GetFinTE

(

const int

SurfID

)

const

GetFinTT()

int IntPolyh_MaillageAffinage::GetFinTT

(

const int

SurfID

)

const

GetMaxDeflection()

double IntPolyh_MaillageAffinage::GetMaxDeflection

(

const int

SurfID

)

const

returns FlecheMax

GetMinDeflection()

double IntPolyh_MaillageAffinage::GetMinDeflection

(

const int

SurfID

)

const

returns FlecheMin

GetNextChainStartPoint()

int IntPolyh_MaillageAffinage::GetNextChainStartPoint	(	const IntPolyh_StartPoint &	SPInit,
		IntPolyh_StartPoint &	SPNext,
		IntPolyh_SectionLine &	MySectionLine,
		IntPolyh_ArrayOfTangentZones &	TTangentZones,
		const bool	Prepend = false )

Mainly used by StartPointsChain(), this function try to compute the next StartPoint.

LocalSurfaceRefinement()

void IntPolyh_MaillageAffinage::LocalSurfaceRefinement

(

const int

SurfId

)

Refine systematicaly all marked triangles of ONE surface.

MakeSampling()

void IntPolyh_MaillageAffinage::MakeSampling	(	const int	SurfID,
		NCollection_Array1< double > &	theUPars,
		NCollection_Array1< double > &	theVPars )

Makes the sampling of the surface - Fills the arrays with the parametric values of the sampling points (triangulation nodes).

NextStartingPointsResearch()

int IntPolyh_MaillageAffinage::NextStartingPointsResearch	(	const int	T1,
		const int	T2,
		const IntPolyh_StartPoint &	SPInit,
		IntPolyh_StartPoint &	SPNext ) const

from two triangles and an intersection point I search the other point (if it exists). This function is used by StartPointChain

SetEnlargeZone()

void IntPolyh_MaillageAffinage::SetEnlargeZone

(

const bool

EnlargeZone

)

StartingPointsResearch()

int IntPolyh_MaillageAffinage::StartingPointsResearch	(	const int	T1,
		const int	T2,
		IntPolyh_StartPoint &	SP1,
		IntPolyh_StartPoint &	SP2 ) const

From two triangles compute intersection points. If we found more than two intersection points that means that those triangles are coplanar.

StartPointsChain()

int IntPolyh_MaillageAffinage::StartPointsChain	(	IntPolyh_ArrayOfSectionLines &	TSectionLines,
		IntPolyh_ArrayOfTangentZones &	TTangentZones )

Loop on the array of couples. Compute StartPoints. Try to chain the StartPoints into SectionLines or put the point in the ArrayOfTangentZones if chaining it, is not possible.

TriangleCompare()

int IntPolyh_MaillageAffinage::TriangleCompare

(

)

Analyse each couple of triangles from the two – array of triangles, to see if they are in contact, and compute the incidence. Then put couples in contact in the array of couples.

TriangleEdgeContact()

int IntPolyh_MaillageAffinage::TriangleEdgeContact	(	const int	TriSurfID,
		const int	EdgeIndice,
		const IntPolyh_Triangle &	Tri1,
		const IntPolyh_Triangle &	Tri2,
		const IntPolyh_Point &	P1,
		const IntPolyh_Point &	P2,
		const IntPolyh_Point &	P3,
		const IntPolyh_Point &	C1,
		const IntPolyh_Point &	C2,
		const IntPolyh_Point &	C3,
		const IntPolyh_Point &	Pe1,
		const IntPolyh_Point &	Pe2,
		const IntPolyh_Point &	E,
		const IntPolyh_Point &	N,
		IntPolyh_StartPoint &	SP1,
		IntPolyh_StartPoint &	SP2 ) const

TrianglesDeflectionsRefinementBSB()

void IntPolyh_MaillageAffinage::TrianglesDeflectionsRefinementBSB

(

)

Refine both surfaces using BoundSortBox as rejection. The criterions used to refine a triangle are: The deflection The size of the bounding boxes (one surface may be very small compared to the other)

TriContact()

int IntPolyh_MaillageAffinage::TriContact	(	const IntPolyh_Point &	P1,
		const IntPolyh_Point &	P2,
		const IntPolyh_Point &	P3,
		const IntPolyh_Point &	Q1,
		const IntPolyh_Point &	Q2,
		const IntPolyh_Point &	Q3,
		double &	Angle ) const

This function checks if two triangles are in contact or not, return 1 if yes, return 0 if not.

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

• IntPolyh_MaillageAffinage.hxx