public class SoftCircle extends PixelMapping
{
    int cx,cy;
    
    public int mx = 20, my = 20;
    boolean finished=true;
    public SoftCircle(ComplexImage ci, PixelMapping ne)
    {
        super(ci,ne);        
    }
    public SoftCircle(ComplexImage ci, PixelMapping ne,int x,int y)
    {
        super(ci,ne);        
        mx = x; my = y;
    }
    public void setOrigin(int x,int y)
    {
        ox=x;oy=y;startAgain = true; finished = false;
        if (next!=null) next.setOrigin(x,y);
    }
    public PixelDesc nextPixel()
    {
        if (startAgain)
        {
            cx = 0;
            cy = 0;
            startAgain = false;
            finished = false;
        }
        double ret = Math.exp(-20*((cx-mx/2)*(cx-mx/2)+(cy-my/2)*(cy-my/2))/(mx*mx));      
        if (cx<mx)
        {
            cx++;
        }
        else
        {
            cx=0;
            if (cy<my)
            {
                cy++;
            }
            else
            {
                finished = true;
            }
        }
        return new PixelDesc(null,ox+cx-mx/2,oy+cy-my/2,(float)ret);
    }
    public boolean morePixels()
    {
        return !finished;
    }
}