Circle Class Reference

To store and treat a circular figure. More...

Inheritance diagram for Circle:

List of all members.

Public Member Functions
	Circle ()
	Default construcor.
	Circle (const Point< double > &c, double r, int code=1)
	Constructor.
void	setRadius (double r)
	Assign radius of circle.
double	getRadius () const
	Return radius of circle.
void	setCenter (const Point< double > &c)
	Assign coordinates of center of circle.
Point< double >	getCenter () const
	Return coordinates of center of circle.
double	getSignedDistance (const Point< double > &p) const
	Return signed distance of a given point from the current circle.
Circle &	operator+= (Point< double > a)
	Operator +=.
Circle &	operator+= (double a)
	Operator *=.
void	setCode (int code)
	Choose a code for the domain defined by the figure.
void	getSignedDistance (const Grid &g, Vect< double > &d) const
	Calculate signed distance to current figure with respect to grid points.
double	dLine (const Point< double > &p, const Point< double > &a, const Point< double > &b) const

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Detailed Description

To store and treat a circular figure.

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Constructor & Destructor Documentation

Circle	(	const Point< double > &	c,
		double	r,
		int	code = 1
	)

Constructor.

Parameters:

[in]	c	Coordinates of center of circle
[in]	r	Radius
[in]	code	Code to assign to the generated domain [Default: 1]

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Member Function Documentation

double getSignedDistance

(

const Point< double > &

p

)

const [virtual]

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

The computed distance is negative if p lies in the disk, positive if it is outside, and 0 on the circle

Parameters:

[in]

p

Point<double> instance

Reimplemented from Figure.

Circle& operator+=

(

Point< double >

a

)

Operator +=.

Translate circle by a vector a

Circle& operator+=

(

double

a

)

Operator *=.

Scale circle by a factor a

void getSignedDistance	(	const Grid &	g,
		Vect< double > &	d
	)		const [inherited]

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

double dLine	(	const Point< double > &	p,
		const Point< double > &	a,
		const Point< double > &	b
	)		const [inherited]

Compute distance from a line

Parameters:

[in]	p	Point for which distance is computed
[in]	a	First vertex of line
[in]	b	Second vertex of line

Returns:

Signed distance