oofem::AlphaEdge2D Class Reference

#include <edge2d.h>

Inheritance diagram for oofem::AlphaEdge2D:

Collaboration diagram for oofem::AlphaEdge2D:

Public Member Functions
	AlphaEdge2D (int node1, int node2, double _length)
	Constructor.
virtual	~AlphaEdge2D ()
	Destructor.
void	setOuterAlphaBound (double alphaMin)
	Sets the outer limit.
void	setInnerAlphaBound (double alphaMax)
	Sets the inner limit.
double	giveOuterAlphaBound ()
	Returns the outer limit.
double	giveInnerAlphaBound ()
	Returns the inner limit.
void	setHullFlag (bool flag)
	Sets the convex hull property.
bool	giveHullFlag ()
	Returns true if the edge lies on convex hull, false otherwise.
void	setSharing (int n, DelaunayTriangle *pTE)
	Stores DelaunayTriangle sharing the receiver.
DelaunayTriangle *	giveShared (int n)
	Returns DelaunayTriangle sharing receiver.
double	giveLength ()
	Returns length of the receiver.
Public Member Functions inherited from oofem::Edge2D
	Edge2D (int node1, int node2)
	Constructor.
virtual	~Edge2D ()
	Destructor.
int	giveFirstNodeNumber ()
	Gives the number of the first node.
int	giveSecondNodeNumber ()
	Gives the number of the second node.
virtual bool	operator== (const Edge2D &right)
	Compares receiver with passed Edge2D. Returns true if node numbers are equal, false otherwise.

Private Attributes
bool	isOnConvexHull
	Convex hull flag means edge is not shared by two triangle.
double	outerAlphaBound
	Bottom (outer) limit for alpha shape, for smaller values of alpha the edge lies outside.
double	innerAlphaBound
	Top (inner) limit for alpha shape, for greater values of alpha the edge lies inside of the shape.
DelaunayTriangle *	sharedByTriangles [2]
	Triangles which share the alphaEdge.
double	length
	Length of edge is stored in order to allow variable alpha value.

Detailed Description

Class for the boundary recognition method - alpha shape. Case 1 - convex hull edge: alpha greater than outerAlphaBound, edge is part of alpha shape. Case 2 - shared edge: alpha greater than innerAlphaBound, edge lies within alpha shape. Alpha between bounds, edge is exactly on alpha shape Alpha smaller than outerAlphaBound, edge lies outside of alpha shape

Author

David Krybus

Definition at line 77 of file edge2d.h.

Constructor & Destructor Documentation

AlphaEdge2D()

oofem::AlphaEdge2D::AlphaEdge2D	(	int	node1,
		int	node2,
		double	_length )

Constructor.

Definition at line 55 of file edge2d.C.

References oofem::Edge2D::Edge2D(), innerAlphaBound, isOnConvexHull, length, outerAlphaBound, and sharedByTriangles.

~AlphaEdge2D()

oofem::AlphaEdge2D::~AlphaEdge2D ( )

virtual

Destructor.

Definition at line 66 of file edge2d.C.

Member Function Documentation

giveHullFlag()

bool oofem::AlphaEdge2D::giveHullFlag ( )

inline

Returns true if the edge lies on convex hull, false otherwise.

Definition at line 96 of file edge2d.h.

References isOnConvexHull.

giveInnerAlphaBound()

double oofem::AlphaEdge2D::giveInnerAlphaBound ( )

inline

Returns the inner limit.

Definition at line 92 of file edge2d.h.

References innerAlphaBound.

Referenced by oofem::DelaunayTriangulator::computeAlphaComplex().

giveLength()

double oofem::AlphaEdge2D::giveLength ( )

inline

Returns length of the receiver.

Definition at line 102 of file edge2d.h.

References length.

giveOuterAlphaBound()

double oofem::AlphaEdge2D::giveOuterAlphaBound ( )

inline

Returns the outer limit.

Definition at line 90 of file edge2d.h.

References outerAlphaBound.

Referenced by oofem::DelaunayTriangulator::computeAlphaComplex().

giveShared()

DelaunayTriangle * oofem::AlphaEdge2D::giveShared ( int n )

inline

Returns DelaunayTriangle sharing receiver.

Definition at line 100 of file edge2d.h.

References sharedByTriangles.

setHullFlag()

void oofem::AlphaEdge2D::setHullFlag ( bool flag )

inline

Sets the convex hull property.

Definition at line 94 of file edge2d.h.

References isOnConvexHull.

Referenced by oofem::DelaunayTriangulator::computeAlphaComplex().

setInnerAlphaBound()

void oofem::AlphaEdge2D::setInnerAlphaBound ( double alphaMax )

inline

Sets the inner limit.

Definition at line 88 of file edge2d.h.

References innerAlphaBound.

Referenced by oofem::DelaunayTriangulator::computeAlphaComplex().

setOuterAlphaBound()

void oofem::AlphaEdge2D::setOuterAlphaBound ( double alphaMin )

inline

Sets the outer limit.

Definition at line 86 of file edge2d.h.

References outerAlphaBound.

Referenced by oofem::DelaunayTriangulator::computeAlphaComplex().

setSharing()

void oofem::AlphaEdge2D::setSharing	(	int	n,
		DelaunayTriangle *	pTE )

Stores DelaunayTriangle sharing the receiver.

Definition at line 70 of file edge2d.C.

References sharedByTriangles.

Referenced by oofem::DelaunayTriangulator::computeAlphaComplex().

Member Data Documentation

innerAlphaBound

double oofem::AlphaEdge2D::innerAlphaBound

private

Top (inner) limit for alpha shape, for greater values of alpha the edge lies inside of the shape.

Definition at line 110 of file edge2d.h.

Referenced by AlphaEdge2D(), giveInnerAlphaBound(), and setInnerAlphaBound().

isOnConvexHull

bool oofem::AlphaEdge2D::isOnConvexHull

private

Convex hull flag means edge is not shared by two triangle.

Definition at line 106 of file edge2d.h.

Referenced by AlphaEdge2D(), giveHullFlag(), and setHullFlag().

length

double oofem::AlphaEdge2D::length

private

Length of edge is stored in order to allow variable alpha value.

Definition at line 114 of file edge2d.h.

Referenced by AlphaEdge2D(), and giveLength().

outerAlphaBound

double oofem::AlphaEdge2D::outerAlphaBound

private

Bottom (outer) limit for alpha shape, for smaller values of alpha the edge lies outside.

Definition at line 108 of file edge2d.h.

Referenced by AlphaEdge2D(), giveOuterAlphaBound(), and setOuterAlphaBound().

sharedByTriangles

DelaunayTriangle* oofem::AlphaEdge2D::sharedByTriangles[2]

private

Triangles which share the alphaEdge.

Definition at line 112 of file edge2d.h.

Referenced by AlphaEdge2D(), giveShared(), and setSharing().

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

• edge2d.h
• edge2d.C