DrawingExample
GraphicalObject.java
import java.awt.*;
/**
* A class that stores an object that is to be drawn on some canvas
* somewhere. Since the method can be called from anywhere, the object
* can be draw in different places.
*
* @author Chuck Cusack
* @version 1.0, September, 2005
*/
public abstract class GraphicalObject {
protected int x;
protected int y;
/**
* Default constructor--create a 0 by 0 object located at (0,0).
*/
public GraphicalObject() {
setLocation(0,0);
}
/**
* Constructor for objects of class GraphicalObject
* @param x the x-coordinate of the upper-left corner of the object
* @param y the y-ccordinate of the upper-left corner of object
*/
public GraphicalObject(int x,int y) {
this.x=x;
this.y=y;
// Or:
// setLocation(x,y);
// Or:
// setX(x);
// setY(y);
}
/**
* drawObject
* Draw the object on the given graphics object
* @param g the graphics context
*/
public abstract void drawObject(Graphics g);
//----------------------------------------------------
// The usual get methods
public int getX() {
return x;
}
public int getY() {
return y;
}
// The usual set methods
public void setLocation(int x,int y) {
setX(x);
setY(y);
}
public void setX(int x) {
this.x=x;
}
public void setY(int y) {
this.y=y;
}
}
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