/**
 * Rotation of an image by 90 degrees clockwise
 *
 * @author Pat Troy: troy AT uic DOT edu
 */


import java.util.*;
import java.awt.*;

public class Lect1021b
{
  public static void main(String[] args)
  {
    // create the picture and a turtle
    String fileName = FileChooser.pickAFile();
    Picture pict = new Picture (fileName);
   
    // get an array of pixels
    Pixel pixArray[];
    pixArray = pict.getPixels();
    
    System.out.println ("Width: " + pict.getWidth());
    System.out.println ("Height: " + pict.getHeight());
    System.out.println ("Total Pixels: " + pict.getWidth() * pict.getHeight());
    
    System.out.println ("Array Length: " + pixArray.length );
    System.out.println ( pixArray [0] );
    

    
    int index;
    Pixel pix, pix2;
    Color cl1, cl2;
    int red, green, blue, gray;
    int xPos, yPos, newX, newY;
    int originalWidth, originalHeight;
    
    originalWidth = pict.getWidth();
    originalHeight = pict.getHeight();
    
        // create the duplicate "canvas"
    Picture pict2 = new Picture (originalHeight, originalWidth);
    
    for ( index = 0 ; index < pixArray.length ; index++ )
    {
      //get the pixel from the source image
      pix = pixArray[index];
      
      // get the x, y coordinates for the source pixel
      xPos = pix.getX();
      yPos = pix.getY();
      
      // get the destination pixel using the x,y coordinates
      newX = originalHeight - 1 - yPos;  // the "- 1" is to adjust of X value range
      newY = xPos;
      
      pix2 = pict2.getPixel (newX, newY);
     
      // retrieve the source color information
      red = pix.getRed();
      green = pix.getGreen();
      blue = pix.getBlue();
           
      // store the color information in the destination pixel
      pix2.setRed (red);
      pix2.setGreen (green);
      pix2.setBlue (blue); 
    }
    
    // display the picture
    pict.show();
    pict2.show();
    
    // save the picture to the computer
    // Note:  Be sure to add the .jpg to the end of the filename!!!!!
    fileName = FileChooser.pickAFile();
    System.out.println(fileName);
    pict2.write (fileName);

  }
  

  
  
}