Jcg.geometry

Class Point_2

java.lang.Object

Jcg.geometry.Point_2

All Implemented Interfaces:

java.lang.Comparable<Point_>, Point_

public class Point_2
extends java.lang.Object
implements Point_

Field Summary

Fields

Modifier and Type	Field and Description
java.lang.Double	x
java.lang.Double	y

Constructor Summary

Constructors

Constructor and Description
Point_2()
Point_2(java.lang.Number x, java.lang.Number y)
Point_2(Point_ p)

Method Summary

Modifier and Type	Method and Description
void	barycenter(Point_[] points) Set the current point as the barycenter of an array of points
int	compareCartesian(Point_ o, int i) Compare the i-th coordinate of two points
int	compareTo(Point_ o) Compare two points (lexicographic order on coordinates)
int	dimension() Return the dimension of the space
java.lang.Number	distanceFrom(Point_2 p)
boolean	equals(java.lang.Object o)
java.lang.Number	getCartesian(int i) return the i-th cartesian coordinate of the point
java.lang.Number	getX()
java.lang.Number	getY()
int	hashCode()
void	linearCombination(Point_[] points, java.lang.Number[] coefficients) Set the current point a linear combination of an array of points.
static Point_2	linearCombination(Point_2[] points, java.lang.Number[] coefficients)
static Point_2	midPoint(Point_2 p, Point_2 q)
Vector_	minus(Point_ b) Return the vector (p-q), where q is the current point
void	setCartesian(int i, java.lang.Number x) set the i-th cartesian coordinate
void	setOrigin() set the coordinates of the origin
void	setX(java.lang.Double x)
void	setY(java.lang.Double y)
java.lang.Number	squareDistance(Point_ p) Return the square distance ||p-q||^2, where q is the current point
Point_2	sum(Vector_ v)
java.lang.String	toString() Return a string (representation of the point)
void	translateOf(Vector_ v) Translate the current point according to a vector v

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Field Detail

x

public java.lang.Double x

y

public java.lang.Double y

Constructor Detail

Point_2

public Point_2()

Point_2

public Point_2(java.lang.Number x,
               java.lang.Number y)

Point_2

public Point_2(Point_ p)

Method Detail

barycenter

public void barycenter(Point_[] points)

Description copied from interface: Point_

Set the current point as the barycenter of an array of points

Specified by:

barycenter in interface Point_

linearCombination

public void linearCombination(Point_[] points,
                              java.lang.Number[] coefficients)

Description copied from interface: Point_

Set the current point a linear combination of an array of points. Coefficients must sum to 1

Specified by:

linearCombination in interface Point_

linearCombination

public static Point_2 linearCombination(Point_2[] points,
                                        java.lang.Number[] coefficients)

midPoint

public static Point_2 midPoint(Point_2 p,
                               Point_2 q)

getX

public java.lang.Number getX()

getY

public java.lang.Number getY()

setX

public void setX(java.lang.Double x)

setY

public void setY(java.lang.Double y)

translateOf

public void translateOf(Vector_ v)

Description copied from interface: Point_

Translate the current point according to a vector v

Specified by:

translateOf in interface Point_

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

distanceFrom

public java.lang.Number distanceFrom(Point_2 p)

squareDistance

public java.lang.Number squareDistance(Point_ p)

Description copied from interface: Point_

Return the square distance ||p-q||^2, where q is the current point

Specified by:

squareDistance in interface Point_

toString

public java.lang.String toString()

Description copied from interface: Point_

Return a string (representation of the point)

Specified by:

toString in interface Point_

Overrides:

toString in class java.lang.Object

dimension

public int dimension()

Description copied from interface: Point_

Return the dimension of the space

Specified by:

dimension in interface Point_

getCartesian

public java.lang.Number getCartesian(int i)

Description copied from interface: Point_

return the i-th cartesian coordinate of the point

Specified by:

getCartesian in interface Point_

setCartesian

public void setCartesian(int i,
                         java.lang.Number x)

Description copied from interface: Point_

set the i-th cartesian coordinate

Specified by:

setCartesian in interface Point_

setOrigin

public void setOrigin()

Description copied from interface: Point_

set the coordinates of the origin

Specified by:

setOrigin in interface Point_

minus

public Vector_ minus(Point_ b)

Description copied from interface: Point_

Return the vector (p-q), where q is the current point

Specified by:

minus in interface Point_

sum

public Point_2 sum(Vector_ v)

compareTo

public int compareTo(Point_ o)

Compare two points (lexicographic order on coordinates)

Specified by:

compareTo in interface java.lang.Comparable<Point_>

Parameters:

o - the point to compare

compareCartesian

public int compareCartesian(Point_ o,
                            int i)

Compare the i-th coordinate of two points

Specified by:

compareCartesian in interface Point_

Parameters:

o - the point to compare

i - the i-th coordinate to compare

Returns:

the result is -1 if first point is smaller then point o, return 1 is first point is greater then o, and 0 otherwise