Class Quadratic

java.lang.Object
  |
  +--Quadratic

class Quadratic

extends java.lang.Object

implements Function

Represents a simplified quadratic curve. The function will have a repeated root (on the origin by default).

Field Summary

protected double	coeff
static double	DEFAULT_COEFF
static double	DEFAULT_SHIFT
protected double	shift

Constructor Summary

Quadratic()
Creates a new quadratic curve, with a single root on the origin, and passing through (-1,1) and (1,1).

Quadratic(double coeff)
Creates a new quadratic curve, with a single root on the origin.

Quadratic(double coeff, double shift)
Creates a new quadratic curve.

Method Summary

double	evaluate(double x)
double	getCoeff()
double	getShift()
void	setCoeff(double d)
void	setShift(double d)

Methods inherited from class java.lang.Object

, clone, equals, finalize, getClass, hashCode, notify, notifyAll, registerNatives, toString, wait, wait, wait

Field Detail

coeff

protected double coeff

shift

protected double shift

DEFAULT_COEFF

public static final double DEFAULT_COEFF

DEFAULT_SHIFT

public static final double DEFAULT_SHIFT

Constructor Detail

Quadratic

public Quadratic(double coeff,
                 double shift)

Creates a new quadratic curve.

Parameters:

coeff - The x-squared coefficient

shift - The x-coordinate of the root

Quadratic

public Quadratic(double coeff)

Creates a new quadratic curve, with a single root on the origin.

Parameters:

coeff - The x-squared coefficient

Quadratic

public Quadratic()

Creates a new quadratic curve, with a single root on the origin, and passing through (-1,1) and (1,1).

Method Detail

evaluate

public double evaluate(double x)

Specified by:

evaluate in interface Function

Returns:

coeff*(x-shift)*(x-shift)

getShift

public double getShift()

getCoeff

public double getCoeff()

setShift

public void setShift(double d)

setCoeff

public void setCoeff(double d)