import java.awt.*;
import Raster;

public class ZRaster extends Raster {
    public final static int MAXZ = (1 << 16) - 1;
    public int zbuff[];

    ///////////////////////// Constructors //////////////////////

    /**
     *  This constructor which takes no arguments
     *  allows for future extension.
     */
    public ZRaster()
    {
    }

    /**
     *  This constructor creates an uninitialized
     *  Raster Object of a given size (w x h).
     */
    public ZRaster(int w, int h)
    {
        super(w, h);
        zbuff = new int[w*h];
    }

    /**
     *  This constructor creates an Raster initialized
     *  with the contents of an image.
     */
    public ZRaster(Image img)
    {
        super(img);
        zbuff = new int[this.size()];
    }

    /**
     *    Set all z values in the zbuffer
     *    to the maximum value
     */
    public final void resetz()
    {
        for (int i = 0; i < zbuff.length; i++)
            zbuff[i] = MAXZ;
    }
}