boazsender/Determine Dominant Color Secret

## Determine Dominant Color
<?php
  $file = $_GET['file'];
  if (!$_GET['file']){
    $file = 'http://labs.suredev.com/stuff/speckles.jpg';
  }

  $image = imagecreatefromjpeg($file);
  $width = imagesx($image);
  $height = imagesy($image);
  $pixels = $width * $height;
  $pixel = $internpixel = 0;
  $scores = $dist = $distances = array();

  for($x = 0; $x < $width; $x++){
    for($y = 0; $y < $height; $y++,$pixel++){

      $rgb = imagecolorat($image, $x, $y);
      $color = imagecolorsforindex($image, $rgb);

      $colorkey = join(array_slice($color, 0, 3), ",");
      $pixelkey = $x . "," . $y;

      for($x2 = 0; $x2 < $width; $x2++){
        for($y2 = 0; $y2 < $height; $y2++){
          $internpixel++;
          $rgb2 = imagecolorat($image, $x2, $y2);
          $color2 = imagecolorsforindex($image, $rgb2);
          $dist[] = sqrt(pow(($color2['red'] - $color['red']), 2) + pow(($color2['green'] - $color['green']), 2) + pow(($color2['blue'] - $color['blue']), 2));
          $computeddists = array_sum($dist);
          unset($dist);
        }
      }

      $distances[$colorkey] = $computeddists;
    }
  }
  asort($distances, SORT_NUMERIC);
  $topcolor = array_shift(array_keys($distances));
?>

<html>
  <head>
    <title>Find the most common color</title>
  </head>
  <body>
    <form action='' method='get'>
      <label>Path to img on the www</label> <input type='text' name='file'><input type='submit'>
    </form>
    <img src='<?php echo $file ?>'>
     <br />
    <h1>The most common color is:</h1>
    <div style='background: rgb(<?php echo $topcolor ?>); height: 100px;width:100px'></div>

<hr/>


<pre>
<?php
  echo 'pixel: ' . $pixel . '<br />';
  echo 'block: ' . $block . '<br />';
  echo 'internpixel: ' . $internpixel . '<br />';
  echo 'pixels: ' . $pixels . '<br />';
  echo 'x: ' . $x . '<br />';
  echo 'y: ' . $y . '<br />';
  echo 'top color index: ' . $topcolor . '<br />';
  echo 'distances: ' . print_r($distances) . '<br />';
?>
</pre>


  </body>
</html>
	<?php
	$file = $_GET['file'];
	if (!$_GET['file']){
	$file = 'http://labs.suredev.com/stuff/speckles.jpg';
	}

	$image = imagecreatefromjpeg($file);
	$width = imagesx($image);
	$height = imagesy($image);
	$pixels = $width * $height;
	$pixel = $internpixel = 0;
	$scores = $dist = $distances = array();

	for($x = 0; $x < $width; $x++){
	for($y = 0; $y < $height; $y++,$pixel++){

	$rgb = imagecolorat($image, $x, $y);
	$color = imagecolorsforindex($image, $rgb);

	$colorkey = join(array_slice($color, 0, 3), ",");
	$pixelkey = $x . "," . $y;

	for($x2 = 0; $x2 < $width; $x2++){
	for($y2 = 0; $y2 < $height; $y2++){
	$internpixel++;
	$rgb2 = imagecolorat($image, $x2, $y2);
	$color2 = imagecolorsforindex($image, $rgb2);
	$dist[] = sqrt(pow(($color2['red'] - $color['red']), 2) + pow(($color2['green'] - $color['green']), 2) + pow(($color2['blue'] - $color['blue']), 2));
	$computeddists = array_sum($dist);
	unset($dist);
	}
	}

	$distances[$colorkey] = $computeddists;
	}
	}
	asort($distances, SORT_NUMERIC);
	$topcolor = array_shift(array_keys($distances));
	?>

	<html>
	<head>
	<title>Find the most common color</title>
	</head>
	<body>
	<form action='' method='get'>
	<label>Path to img on the www</label> <input type='text' name='file'><input type='submit'>
	</form>
	<img src='<?php echo $file ?>'>
	<br />
	<h1>The most common color is:</h1>
	<div style='background: rgb(<?php echo $topcolor ?>); height: 100px;width:100px'></div>

	<hr/>


	<pre>
	<?php
	echo 'pixel: ' . $pixel . '<br />';
	echo 'block: ' . $block . '<br />';
	echo 'internpixel: ' . $internpixel . '<br />';
	echo 'pixels: ' . $pixels . '<br />';
	echo 'x: ' . $x . '<br />';
	echo 'y: ' . $y . '<br />';
	echo 'top color index: ' . $topcolor . '<br />';
	echo 'distances: ' . print_r($distances) . '<br />';
	?>
	</pre>


	</body>
	</html>