acm.graphics
Class GPoint

java.lang.Object
  |
  +--acm.graphics.GPoint

public class GPoint extends Object

This class is a double-precision version of the Point class in java.awt.

Constructor Summary

GPoint()

GPoint(double x, double y)

GPoint(GPoint p)

GPoint(Point p)

Method Summary

GPoint	getLocation() Returns a new GPoint whose coordinates are the same as this one.
double	getX() Returns the x coordinate of this GPoint.
double	getY() Returns the y coordinate of this GPoint.
void	setLocation(double x, double y) Sets the location of the GPoint to the specified x and y values.
void	setLocation(GPoint p) Sets the location of the GPoint to that of an existing one.
Point	toPoint() Converts this GPoint to the nearest integer-based Point.
void	translate(double dx, double dy) Adjusts the coordinates of a point by the specified dx and dy offsets.

Constructor Detail

public GPoint()

Constructs a new GPoint at the origin (0, 0).

Usage:

pt = new GPoint();

public GPoint(double x, double y)

Constructs a new GPoint with the specified coordinates.

Usage:

pt = new GPoint(x, y);

Parameters:

x	The x-coordinate of the point
y	The y-coordinate of the point

public GPoint(GPoint p)

Constructs a new GPoint from an existing one.

Usage:

pt = new GPoint(p);

Parameter:

p	The original point

public GPoint(Point p)

Constructs a new GPoint from an existing AWT Point.

Usage:

pt = new GPoint(p);

Parameter:

p	An AWT Point

Method Detail

public GPoint getLocation()

Returns a new GPoint whose coordinates are the same as this one.

Usage:	p = pt.getLocation();
Returns:	A new point with the same coordinates

public double getX()

Returns the x coordinate of this GPoint.

Usage:	x = pt.getX();
Returns:	The x coordinate of this GPoint

public double getY()

Returns the y coordinate of this GPoint.

Usage:	y = pt.getY();
Returns:	The y coordinate of this GPoint

public void setLocation(double x, double y)

Sets the location of the GPoint to the specified x and y values.

Usage:

pt.setLocation(x, y);

Parameters:

x	The new x-coordinate for the point
y	The new y-coordinate for the point

public void setLocation(GPoint p)

Sets the location of the GPoint to that of an existing one.

Usage:

pt.setLocation(p);

Parameter:

p	An existing GPoint specifying the new location

public Point toPoint()

Converts this GPoint to the nearest integer-based Point.

Usage:	size = dim.toPoint();
Returns:	The closest integer-based Point

public void translate(double dx, double dy)

Adjusts the coordinates of a point by the specified dx and dy offsets.

Usage:

pt.translate(dx, dy);

Parameters:

dx	The change in the x direction (positive is rightward)
dy	The change in the y direction (positive is downward)