PHP Play Mosaic

In this paper, the author introduces the method of local mosaic of image in PHP implementation. Share to everyone for your reference. The specific analysis is as follows:

Principle:

For each pixel in the selected area of the picture, a number of widths and heights are added to create the moment shape. The moments of each pixel overlap together, creating a mosaic effect.
This example uses the Imagecolorat of the GD library to get the pixel color, using imagefilledrectangle to draw the moment shape.

As shown below:

The code is as follows:

Copy CodeThe code is as follows: <?php
/** Pictures Local mosaic
* @param String $source Original
* @param stirng $dest generated pictures
* @param int $x 1 start axis
* @param int $y 1 start ordinate
* @param int $x 2 End axis
* @param int $y 2 End ordinate
* @param int $deep Depth, the larger the number the more blurred
* @return Boolean
*/
function Imagemosaics ($source, $dest, $x 1, $y 1, $x 2, $y 2, $deep) {

Determine if the original image exists
if (!file_exists ($source)) {
return false;
}

Get the original information
List ($owidth, $oheight, $otype) = getimagesize ($source);

Determine if the area is outside the picture
if ($x 1> $owidth | | $x 1<0 | | $x 2> $owidth | | $x 2<0 | | $y 1> $oheight | | $y 1<0 | | $y 2> $oheight | | $y 2<0) {
return false;
}

Switch ($otype) {
Case 1: $source _img = Imagecreatefromgif ($source); Break
Case 2: $source _img = Imagecreatefromjpeg ($source); Break
Case 3: $source _img = Imagecreatefrompng ($source); Break
Default
return false;
}

Play Mosaic
for ($x = $x 1; $x < $x 2; $x = $x + $deep) {
for ($y = $y 1; $y < $y 2; $y = $y + $deep) {
$color = Imagecolorat ($source _img, $x +round ($deep/2), $y +round ($deep/2));
Imagefilledrectangle ($source _img, $x, $y, $x + $deep, $y + $deep, $color);
}
}

Create a picture
Switch ($otype) {
Case 1:imagegif ($source _img, $dest); Break
Case 2:imagejpeg ($source _img, $dest); Break
Case 3:imagepng ($source _img, $dest); Break
}

Return Is_file ($dest)? True:false;

}

$source = ' source.jpg ';
$dest = ' dest.jpg ';

$flag = Imagemosaics ($source, $dest, 176, 98, 273, 197, 4);
Echo ' ';
Echo ' ';
?>

PHP Play Mosaic