cs1.android

Class Point

java.lang.Object

cs1.android.Shape

cs1.android.Point

public class Point
extends Shape

Representation of a point drawn on the canvas.

Field Summary

Fields

Modifier and Type	Field and Description
double	X
double	Y

Fields inherited from class cs1.android.Shape

DEFAULT_COLOR

Constructor Summary

Constructors

Constructor and Description
Point(double xx, double yy) Creates a point with the given coordinates.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	contains(Point point) Determines if this point contains the given point.
static double	distance_squared(double x1, double y1, double x2, double y2) Returns the squared distance between points with the given points.
static double	distance_squared(Point p1, Point p2) Returns the squared distance between the given points.
static double	distance(double x1, double y1, double x2, double y2) Returns the distance between points with the given coordinates.
static double	distance(Point p1, Point p2) Returns the distance between the given points.
void	draw(android.graphics.Canvas canvas) Draws this point on the given canvas.
Point	getCenter() Returns center of this point.
double	getX() Returns the x-coordinate of this point.
double	getY() Returns the y-coordinate of this point.
void	move(double dx, double dy) Moves this point by the given displacement.

Methods inherited from class cs1.android.Shape

distance_squared, distance, draw, erase, getColor, getLabel, setColor, setColor, setLabel

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

X

public double X

Y

public double Y

Constructor Detail

Point

public Point(double xx,
     double yy)

Creates a point with the given coordinates.

Parameters:

xx - the point x-coordinate

yy - the point y-coordinate

Method Detail

contains

public boolean contains(Point point)

Determines if this point contains the given point.

Specified by:

contains in class Shape

Parameters:

point - the point to check for containment

Returns:

this method always returns false

distance_squared

public static double distance_squared(double x1,
                      double y1,
                      double x2,
                      double y2)

Returns the squared distance between points with the given points.

Parameters:

x1 - the x-coordinate of the first point

y1 - the y-coordinate of the first point

x2 - the x-coordinate of the second point

y2 - the y-coordinate of the second point

Returns:

the squared distance between the points with the given coordinates

distance_squared

public static double distance_squared(Point p1,
                      Point p2)

Returns the squared distance between the given points.

Parameters:

p1 - the first point

p2 - the second point

Returns:

the squared distance between the given points

distance

public static double distance(double x1,
              double y1,
              double x2,
              double y2)

Returns the distance between points with the given coordinates.

Parameters:

x1 - the x-coordinate of the first point

y1 - the y-coordinate of the first point

x2 - the x-coordinate of the second point

y2 - the y-coordinate of the second point

Returns:

the distance between the points with the given coordinates

distance

public static double distance(Point p1,
              Point p2)

Returns the distance between the given points.

Parameters:

p1 - the first point

p2 - the second point

Returns:

the distance between the given points

draw

public void draw(android.graphics.Canvas canvas)

Draws this point on the given canvas. Should not be used directly.

Specified by:

draw in class Shape

Parameters:

canvas - the canvas in which to draw this point

getCenter

public Point getCenter()

Returns center of this point.

Specified by:

getCenter in class Shape

Returns:

center of this point

getX

public double getX()

Returns the x-coordinate of this point.

Returns:

the x-coordinate of this point

getY

public double getY()

Returns the y-coordinate of this point.

Returns:

the y-coordinate of this point

move

public void move(double dx,
        double dy)

Moves this point by the given displacement.

Specified by:

move in class Shape

Parameters:

dx - the displacement in x

dy - the displacement in y