import java.awt.*;

public class  ArrayImage
{
  private Image img;
  private int width;
  private int height;
  private int base[];
  private int before[];
  
   private int rx,ry,rex,rey; 
  
  
  
  public ArrayImage(Image img,int width,int height)
    {
      this.img = img;
      this.width = width;
      this.height = height;
      
      base = new int[width*height];
      before = new int[width*height];

      rx=width;ry=width;rex=0;rey=0; 
    }
  
  public void clearImage()
    {
      for(int i = 0; i < width * height;i++)
        {
          base[i] = 0;
         // before[i] = 0;
        }
      Graphics gra = img.getGraphics();
      gra.setColor(new Color(255,255,255));      
      gra.fillRect(0,0,width,height);
      gra.setColor(new Color(0,0,0));
    }
  
  
    public int index(int x,int y)
    {
      if( 0 <= x && x<width&&
          0 <= y && x<height
          )
        {
          return base[width*y+x];
        }
      else
        {
          throw new ArithmeticException();
        }
    }
  
  public Graphics getGraphics()
    {
      return img.getGraphics();
    }
  
  public int[] getArray()
    {
      return base;
    }
  public int Width()
    {
      return width;
    }
  public int Height()
    {
      return height;
    }
  private int zetu(int a)
    {
      if(a >= 0){return a;}
      else{return -a;}
    }
  
  private int susumuX(Point start,int x,int xx)
    {
      try
        {
          return (int)(start.getX()+(xx-x)/zetu(xx-x));
        }
      catch(Exception e)
        {
          return (int)start.getX();
        }
    }
  
  private int susumuY(Point start,int y,int yy)
    {
      try
        {
          return (int)(start.getY()+(yy-y)/zetu(yy-y));
        }
      catch(Exception e)
        {
          return (int)start.getY();
        }
    }
  
  public void drawLine(int x ,int y,int xx, int yy)
    {
      Point start  = new Point(x,y);
      int time;
      if( zetu(xx-x) > zetu(yy-y)){time= zetu(xx-x);}else{time=zetu(yy-y);}
      Point vector = new Point();vector.setLocation((xx-x)/(double)time,(yy-y)/(double)time);
      
      for(int i=0; i < 100;i++){
        try
          {
              if( start.getX()!=xx &&((double)(xx-x)/(double)time > 0) &&(int)start.getX() <= (x+ (xx-x)/(time/i)))
                {
                  start.setLocation(susumuX(start,x,xx),start.getY());
                }
              
              if(start.getX()!=xx&& ( (double)(xx-x)/(double)time < 0) &&(int)start.getX() >= (x+ (xx-x)/(time/i)))
                {
                  start.setLocation(susumuX(start,x,xx),start.getY());
                }
            }
          catch(Exception e)
            {
              ;
            }
          try
            {
              if(start.getY()!=yy &&( (double)(yy-y)/(double)time > 0) &&(int)start.getY() <= (y+ (yy-y)/(time/i)))
                {
                  start.setLocation(start.getX(),susumuY(start,y,yy));
                }
              
              if(start.getY()!=yy&& ( (double)(yy-y)/(double)time < 0) &&(int)start.getY() >= (y+ (yy-y)/(time/i)))
                {
                  start.setLocation(start.getX(),susumuY(start,y,yy));
                }
              
            }catch(Exception e){;}
          baseXY((int)start.getX(),(int)start.getY(),true);
          imageXY((int)start.getX(),(int)start.getY());
          
        }
    }
  
  
  
  public void baseXY(int x,int y,boolean bo)
    {
      if(x > width &&y >height && x < 0 && y<0)
        {return ;}
      if(bo == true)
        {
          base[y*width+x] = 1;
        }
      else
        {
          base[y*width+x] = -1;
        }
    }
  
  public void imageXY(int x,int y)
    {
       if(x >= width &&y >=height && x <= 0 && y<=0)
        {return ;}
      if(before[y*width+x] != base[y*width+x])
        {
          
          Graphics g = img.getGraphics();
          g.fillRect(x,y,1,1);
          before[y*width+x] = base[y*width+x];
        }
    }
  
  
  
  
  public Image createImage()
    {
      rx=width;ry=width;rex=0;rey=0; 
      Graphics g = img.getGraphics();
      for(int y=0; y < height;y++)
        {
          for(int x=0;x<width;x++)
          {
            if(before[y*width+x] != base[y*width+x] &&  0 < base[y*width+x] )
              {
                g.fillRect(x,y,1,1);
                
                if(rx > x){rx = x;} 
                if(ry > x){ry = y;}
                if(rex < x){rex = x;} 
                if(rey < y){rey = y;} 
              }
            before[y*width+x] = base[y*width+x];
          }
        }
      return img;
    }
  
  public int RX()
    {
      return rx;
    }
  public int RY()
    {
      return ry;
    }
  public int REX()
    {
      return rex;
    }
  public int REY()
    {
      return rey;
    }
  
}