#include "cv.h"
#include "highgui.h"
#include <stdlib.h>
#include <stdio.h>

#define NUMBER 100
#define DELAY 5

CvScalar random_color(CvRNG* rng)
{
  int icolor = cvRandInt(rng);
  return CV_RGB(icolor&255, (icolor>>8)&255, (icolor>>16)&255);
}

int main( int argc, char** argv )
{
  // Set up variables
  CvFont font;
  CvPoint pt;
  CvRNG rng; // Random number generator
  CvSize text_size;
  char window_name[] = "Hello World! The Return";
  int arr[2], i;
  int line_type = CV_AA; // change it to 8 to see non-antialiased graphics
  int width = 1000,     height = 700;
  int width2 = width*2, height2 = height*2;

  // Initialise the random number generator
  rng = cvRNG((unsigned)-1);

  // Create an image
  IplImage* image = cvCreateImage( cvSize(width,height), 8, 3 );

  // Create a window
  cvNamedWindow(window_name, 1 );

  // Zero the image data
  cvZero( image );

  for (i = 1; i < NUMBER; i++)
  {
    // Set random text location
    pt.x=cvRandInt(&rng) % width2 - width;
    pt.y=cvRandInt(&rng) % height2 - height;

    // Initialise random font
    cvInitFont( &font, cvRandInt(&rng) % 8,
	(cvRandInt(&rng)%100)*0.05+0.1, (cvRandInt(&rng)%100)*0.05+0.1, 
	(cvRandInt(&rng)%5)*0.1, cvRound(cvRandInt(&rng)%10), line_type );

    // Add text to image
    cvPutText( image, "Hello World!", pt, &font, random_color(&rng));

    // Display image
    cvShowImage(window_name,image);

    // Wait for a tiny little bit
    cvWaitKey(DELAY);
  }

  // Wait for a key stroke, then release memory and exit
  cvWaitKey(0);
  cvReleaseImage(&image);
  cvDestroyWindow(window_name);

  return 0;
}