package shapes;

// Shape5JA.java (for lecture demo)
// cmc, 11/23/00

import java.awt.Graphics;

/** Abstract base class of various drawable shapes. */
public abstract class Shape5JA {

    private int x, y; // location on Graphics object
    private int width, height; // size of shape in pixels

    /** Draw method to be implemented by subclasses.
        @param g the Graphics object to draw on, presumably
                 passed along from a paint method.
    */
    public abstract void draw(Graphics g);

    // Note: all other methods are implemented in this class

    /** Default constructor sets all dimensions to 0. */
    public Shape5JA() {
        setX(0);
        setY(0);
        setWidth(0);
        setHeight(0);
    }

    /** Better constructor sets dimensions as requested.
        @param x X coordinate
        @param y Y coordinate
        @param w Width
        @param h Height
    */
    public Shape5JA(int x, int y, int w, int h) {
        setX(x);
        setY(y);
        setWidth(w);
        setHeight(h);
    }

    /** Sets X coordinate to value of the parameter. */
    public void setX(int value) {
        x = value;
    }

    /** Sets Y coordinate to value of the parameter. */
    public void setY(int value) {
        y = value;
    }

    /** Sets width to value of the parameter. */
    public void setWidth(int value) {
        width = value;
    }

    /** Sets height to value of the parameter. */
    public void setHeight(int value) {
        height = value;
    }

    /** Returns X coordinate. */
    public int x() { return x; }

    /** Returns Y coordinate. */
    public int y() { return y; }

    /** Returns width. */
    public int width() { return width; }

    /** Returns height. */
    public int height() { return height; }
    
}