Ellipse Class Reference

To store and treat an ellipsoidal figure. More...

#include <Figure.h>

Inheritance diagram for Ellipse:

Public Member Functions
	Ellipse ()
	Default constructor.
	Ellipse (Point< real_t > c, real_t a, real_t b, int code=1)
	Constructor with given ellipse data.
real_t	getSignedDistance (const Point< real_t > &p) const
	Return signed distance of a given point from the current ellipse.
Ellipse &	operator+= (Point< real_t > a)
	Operator +=
Ellipse &	operator+= (real_t a)
	Operator *=
void	getSignedDistance (const Grid &g, Vect< real_t > &d) const
	Calculate signed distance to current figure with respect to grid points.
Public Member Functions inherited from Figure
	Figure ()
	Default constructor.
	Figure (const Figure &f)
	Copy constructor.
virtual	~Figure ()
	Destructor.
void	setCode (int code)
	Choose a code for the domain defined by the figure.
Figure &	operator= (const Figure &f)
	Operator =.
void	getSignedDistance (const Grid &g, Vect< real_t > &d) const
	Calculate signed distance to current figure with respect to grid points.
real_t	dLine (const Point< real_t > &p, const Point< real_t > &a, const Point< real_t > &b) const
	Compute signed distance from a line.

Detailed Description

To store and treat an ellipsoidal figure.

Constructor & Destructor Documentation

Ellipse() [1/2]

Ellipse

(

)

Default constructor.

Constructs an ellipse with semimajor axis = 1, and semiminor axis = 1

Ellipse() [2/2]

Ellipse	(	Point< real_t >	c,
		real_t	a,
		real_t	b,
		int	code = 1 )

Constructor with given ellipse data.

Parameters

[in]	c	Coordinates of center
[in]	a	Semimajor axis
[in]	b	Semiminor axis
[in]	code	Code to assign to the generated figure [Default: 1]

Member Function Documentation

getSignedDistance() [1/2]

void getSignedDistance	(	const Grid &	g,
		Vect< real_t > &	d ) const

Calculate signed distance to current figure with respect to grid points.

Parameters

[in]	g	Grid instance
[in]	d	Vect instance containing calculated distance from each grid index to Figure

Remarks

Vector d doesn't need to be sized before invoking this function

getSignedDistance() [2/2]

real_t getSignedDistance ( const Point< real_t > & p ) const

virtual

Return signed distance of a given point from the current ellipse.

The computed distance is negative if p lies in the ellipse, positive if it is outside, and 0 on its boundary

Parameters

[in]

p

Point<double> instance

Reimplemented from Figure.

operator+=() [1/2]

Ellipse & operator+=

(

Point< real_t >

a

)

Operator +=

Translate ellipse by a vector a

Parameters

[in]

a

Vector defining the translation

operator+=() [2/2]

Ellipse & operator+=

(

real_t

a

)

Operator *=

Scale ellipse by a factor a

Parameters

[in]

a

Scaling value