class AContourLine2D : public ContourLine2D

a line (ie connected component) of a 2D active contour

Inheritance:

Public Fields

BoundaryCondition2D

boundary [2] the 2 boundary conditions of each line

Public Methods

double	getArea () const returns the area enclosed by the line
double	getLength () const returns the line length without computing it
unsigned int	getSliceNumber () const returns the line slice number
void	setSliceNumber (const unsigned int sl) set the line slice number
double	getRadius () const returns the line radius without computing it
Vec2	getCenter () const returns the line center without computing it
void	computeMaximumRigidity () const Computes maximum rigidity on all vertices of a line
void	computeLength () Computes the length of a contour and store it
void	computeArea () Computes the area of a contour and store it
void	computeSignedArea () Computes the signed area of a contour
void	computeCenter () Computes the center of a contour
void	computeRadius () Computes the radius of the smallest circle of center "center" enclosing the contour line
void	computeEdgeDirection () const throw(ContourLine2D::IllegalGeometry) Computes the length and the edge direction of all edges
ActiveVertexContourLine2DIterator	firstVertex () const returns an iterator on the list of active vertices that lies on this line
ActiveVertexContourLine2DIterator	lastVertex () const returns an iterator on the list of active vertices that lies on this line
virtual VertexContour*	createVertex () create a new vertex : use a virtual function in order to create inherited vertices

Public

constructor AContourLine2D (const unsigned int nbVertices, ActiveContour2D *c, ContourLine::Topology top) throw(ContourLine2D::EmptyLine) constructor consisting in creating a given number of line vertices AContourLine2D (ActiveContour2D *c, ContourLine::Topology top) create a line without creating any vertices AContourLine2D (const Vec2*array, const unsigned int nb, const ContourLine::Topology top, ActiveContour2D *c) throw(ContourLine2D::EmptyLine) construction based on an array of vertices AContourLine2D (const AContourLine2D *l, ActiveContour2D *c) construction based on another line

destructor virtual ~AContourLine2D (void) empty destructor

Protected Fields

unsigned int	sliceNumber slice number of the line (used in sliceActiveContour2D)
double	length the line length
double	area the area of the enclosed surface
Vec2	center the center of the line
double	radius the radius of the enclosing cercle
static const double	defaultForceRangeRatio the default force range ratio

Inherited from ContourLine2D:

Public Methods

Contour2D* getContour() const

void computeTangent() throw(ContourLine2D::IllegalGeometry)

virtual void removeLine()

Public

Exception classes

class EmptyLine: public Exception

Exception when creating a 2D contour line without any vertices

class IllegalGeometry: public Exception

Exception when two consecutive vertices have the same position which makes the definition of normal vector impossible

Constructors

ContourLine2D(const Vec2*array, const unsigned int nb, const ContourLine::Topology top, Contour2D *c) throw(EmptyLine)

constructor based on an array of 2D vertices and its topology

ContourLine2D(unsigned int nb, Contour2D *c, ContourLine::Topology top=ContourLine::OPENED) throw(EmptyLine)

Build a line segment only by specifying the number of vertices : the vertices are then initialized along the segment defined by (0,0) and (1,0)

ContourLine2D(Contour2D *c, ContourLine::Topology top)

Build a line without any vertices

ContourLine2D(const ContourLine2D* l, Contour2D *c)

Copy constructor

Inherited from ContourLine:

Public Classes

enum Topology

Public Methods

unsigned int getNbVertices() const

Topology getTopology() const

void setClosedTopology()

void setEdgePointer()

void addVertex(VertexContour *v)

ObjectsList <VertexContour> ::iterator firstVertexContour() const

ObjectsList <VertexContour> ::iterator lastVertexContour() const

VertexContour* getFirst(void) const

VertexContour* getLast(void) const

template void applyVertex(void (MT::*fn)(void))

Public

constructors

ContourLine(Contour *c, Topology t=CLOSED)

Build a line without any vertices

ContourLine(ContourLine *l)

Build a dummy line

Protected Fields

Contour* contour

Topology topology

ObjectsList <VertexContour> vertexList

unsigned int sliceNumber

slice number of the line (used in sliceActiveContour2D)

double length

the line length

double area

the area of the enclosed surface

Vec2 center

the center of the line

double radius

the radius of the enclosing cercle

static const double defaultForceRangeRatio

the default force range ratio

BoundaryCondition2D boundary[2]

the 2 boundary conditions of each line

double getArea() const

returns the area enclosed by the line

double getLength() const

returns the line length without computing it

unsigned int getSliceNumber() const

returns the line slice number

void setSliceNumber(const unsigned int sl)

set the line slice number

double getRadius() const

returns the line radius without computing it

Vec2 getCenter() const

returns the line center without computing it

void computeMaximumRigidity() const

Computes maximum rigidity on all vertices of a line

void computeLength()

Computes the length of a contour and store it

void computeArea()

Computes the area of a contour and store it

void computeSignedArea()

Computes the signed area of a contour

void computeCenter()

Computes the center of a contour

void computeRadius()

Computes the radius of the smallest circle of center "center" enclosing the contour line

void computeEdgeDirection() const throw(ContourLine2D::IllegalGeometry)

Computes the length and the edge direction of all edges

Throws:

ContourLine2D ::IllegalGeometry when two neighboring vertices have the same position

constructor

AContourLine2D(const unsigned int nbVertices, ActiveContour2D *c, ContourLine::Topology top) throw(ContourLine2D::EmptyLine)

constructor consisting in creating a given number of line vertices

Parameters:

nbVertices - the number of vertices : must be greater than 0
c - the contour containing the line
top - the line topology

AContourLine2D(ActiveContour2D *c, ContourLine::Topology top)

create a line without creating any vertices

Parameters:

c - the contour containing the line
top - the line topology

AContourLine2D(const Vec2*array, const unsigned int nb, const ContourLine::Topology top, ActiveContour2D *c) throw(ContourLine2D::EmptyLine)

construction based on an array of vertices

Parameters:

array - an array of 2D vectors
nb - the number of items in the array
top - the line topology
c - the contour containing the line

AContourLine2D(const AContourLine2D *l, ActiveContour2D *c)

construction based on another line

Parameters:

l - a line that may belong to another contour
c - the contour containing the line

destructor

virtual ~AContourLine2D(void)

empty destructor

ActiveVertexContourLine2DIterator firstVertex() const

returns an iterator on the list of active vertices that lies on this line

ActiveVertexContourLine2DIterator lastVertex() const

returns an iterator on the list of active vertices that lies on this line

virtual VertexContour* createVertex()

create a new vertex : use a virtual function in order to create inherited vertices

This class has no child classes.

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