//generate a specified number of random images and place them in the
//directory of the source file.
//It is very unlikely something of meaning will be generated, but
//this is why the program can generate hundreds of them...

//By Dominic Matarese

import java.awt.*;
import java.io.*;
import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.util.Scanner;

public class randomimages{
  public static void main(String[] args)
  {

    //int defaultWidth = 720, defaultHeight = 480, defaultNum = 5;
    int width = 720, height = 480, num = 5;


    Scanner reader = new Scanner(System.in);  // Reading from System.in
    System.out.println("How many images do you want to generate?");
    System.out.println("Enter a number: ");
    num = reader.nextInt(); // Scans the next token of the input as an int.

    System.out.println("");
    System.out.println("What will be the resolution of the images? \n(enter both width and height)");
    System.out.println("Enter width in # of pixels: ");
    width = reader.nextInt();
    System.out.println("Enter height in # of pixels: ");
    height = reader.nextInt();
    reader.close();

    generateImages(width, height, num);

    if(num == 1) {
    	System.out.println("The image has been generated!");
    }
    else {
    	System.out.println(num + "images have been generated!");
    }
    return;

  }
  public static void generateImages(int width, int height, int num)
  {
    for(int i = 1; i < num + 1; i++)
    {
      BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);

  	  //generate random RGB values for each pixel
  	  for(int x = 0; x < width; x++) {
  		  for(int y = 0; y < height; y++) {

  			  int r = (int)(Math.random()*256);
          int g = (int)(Math.random()*256);
          int b = (int)(Math.random()*256);

          Color color = new Color(r, g, b);
          image.setRGB(x, y, color.getRGB());
  		  }
  	  }

  	  try {
  		  File random = new File("Random" + i + ".png");
  		  ImageIO.write(image, "png", random);
  	  }
  	  catch (IOException exception){
        System.out.println("Error: IOException occured!");
  		  return; //prints error if IOException occurs
  	  }
    }
  }
}