INTERP_KERNEL.SegSegIntersector Class Reference

#include <InterpKernelGeo2DEdgeLin.hxx>

Inheritance diagram for INTERP_KERNEL.SegSegIntersector:

Public Member Functions
	SegSegIntersector (const EdgeLin &e1, const EdgeLin &e2)
bool	areColinears () const
bool	haveTheySameDirection () const
void	getPlacements (Node *start, Node *end, TypeOfLocInEdge &whereStart, TypeOfLocInEdge &whereEnd, MergePoints &commonNode) const
void	areOverlappedOrOnlyColinears (const Bounds *whereToFind, bool &obviousNoIntersection, bool &areOverlapped)
std::list< IntersectElement >	getIntersectionsCharacteristicVal () const
Private Member Functions
void	getCurveAbscisse (Node *node, TypeOfLocInEdge &where, MergePoints &commonNode) const
Private Attributes
int	_ind
	index on which all single index op will be performed. Filled in case colinearity is equal to true.
double	_col [2]
double	_matrix [4]
Friends
class	Edge

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Constructor & Destructor Documentation

SegSegIntersector::SegSegIntersector	(	const EdgeLin &	e1,
		const EdgeLin &	e2
	)

References INTERP_KERNEL.SegSegIntersector._col, INTERP_KERNEL.SegSegIntersector._ind, INTERP_KERNEL.SegSegIntersector._matrix, INTERP_KERNEL.Edge.getEndNode(), and INTERP_KERNEL.Edge.getStartNode().

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Member Function Documentation

bool SegSegIntersector::areColinears

(

)

const

retrieves if segs are colinears. WARNING !!! Contrary to areOverlappedOrOnlyColinears method, this method use an another precision to detect colinearity !

References INTERP_KERNEL.QUADRATIC_PLANAR._arc_detection_precision, INTERP_KERNEL.SegSegIntersector._matrix, and INTERP_KERNEL.determinant().

bool SegSegIntersector::haveTheySameDirection

(

)

const [virtual]

Must be called when 'this' and 'other' have been detected to be at least colinear. Typically they are overlapped. Must be called after call of areOverlappedOrOnlyColinears.

Implements INTERP_KERNEL.EdgeIntersector.

References INTERP_KERNEL.SegSegIntersector._matrix.

void SegSegIntersector::getPlacements	(	Node *	start,
		Node *	end,
		TypeOfLocInEdge &	whereStart,
		TypeOfLocInEdge &	whereEnd,
		MergePoints &	commonNode
	)			const [virtual]

Precondition start and end must be so that there predecessor was in the same direction than 'e1'

Implements INTERP_KERNEL.EdgeIntersector.

References INTERP_KERNEL.SegSegIntersector.getCurveAbscisse().

void SegSegIntersector::areOverlappedOrOnlyColinears	(	const Bounds *	whereToFind,
		bool &	colinearity,
		bool &	areOverlapped
	)			[virtual]

Should be called once ! non const method.

Parameters:

	whereToFind	specifies the box where final seek should be done. Essentially it is used for caracteristic reason.
	colinearity	returns if regarding QUADRATIC_PLANAR._precision ; e1 and e2 are colinears If true 'this' is modified ! So this method be called once above all if true is returned for this parameter.
	areOverlapped	if colinearity if true, this parameter looks if e1 and e2 are overlapped.

Implements INTERP_KERNEL.EdgeIntersector.

References INTERP_KERNEL.EdgeIntersector._e1, INTERP_KERNEL.EdgeIntersector._e2, INTERP_KERNEL.SegSegIntersector._matrix, INTERP_KERNEL.QUADRATIC_PLANAR._precision, INTERP_KERNEL.determinant(), and INTERP_KERNEL.Edge.getStartNode().

std::list< IntersectElement > SegSegIntersector::getIntersectionsCharacteristicVal

(

)

const [virtual]

areColinears method should be called before with a returned colinearity equal to false to avoid bad news.

Implements INTERP_KERNEL.EdgeIntersector.

References INTERP_KERNEL.SegSegIntersector._col, INTERP_KERNEL.EdgeIntersector._e1, INTERP_KERNEL.EdgeIntersector._e2, INTERP_KERNEL.SegSegIntersector._matrix, INTERP_KERNEL.Node.declareOn(), INTERP_KERNEL.Edge.getCharactValue(), INTERP_KERNEL.Edge.getEndNode(), INTERP_KERNEL.Edge.getStartNode(), INTERP_KERNEL.Node.isEqual(), INTERP_KERNEL.SameTypeEdgeIntersector.keepOrder(), and testMEDMEM.ret.

void SegSegIntersector::getCurveAbscisse	(	Node *	node,
		TypeOfLocInEdge &	where,
		MergePoints &	commonNode
	)			const [private]

References INTERP_KERNEL.EdgeIntersector._e1, INTERP_KERNEL.SegSegIntersector._ind, INTERP_KERNEL.Edge.getEndNode(), INTERP_KERNEL.Edge.getStartNode(), INTERP_KERNEL.INSIDE, INTERP_KERNEL.EdgeIntersector.obviousCaseForCurvAbscisse(), INTERP_KERNEL.OUT_AFTER, INTERP_KERNEL.OUT_BEFORE, and testMEDMEM.ret.

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Friends And Related Function Documentation

friend class Edge [friend]

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Field Documentation

int INTERP_KERNEL.SegSegIntersector._ind [private]

index on which all single index op will be performed. Filled in case colinearity is equal to true.

double INTERP_KERNEL.SegSegIntersector._col[2] [private]

double INTERP_KERNEL.SegSegIntersector._matrix[4] [private]