 | Create a Mosaic Image from a Source Image with Slight Color Variations |  |
// Function to create a mosaic image from a source image with slight color variations
function createMosaicImage($sourceImagePath, $tileSize = 50) {
if (!file_exists($sourceImagePath)) return false;
$imageInfo = getimagesize($sourceImagePath);
$mimeType = $imageInfo['mime'];
switch ($mimeType) {
case 'image/jpeg':
$sourceImage = imagecreatefromjpeg($sourceImagePath);
break;
case 'image/png':
$sourceImage = imagecreatefrompng($sourceImagePath);
break;
case 'image/gif':
$sourceImage = imagecreatefromgif($sourceImagePath);
break;
default:
return false;
}
$width = imagesx($sourceImage);
$height = imagesy($sourceImage);
// Calculate number of tiles
$cols = ceil($width / $tileSize);
$rows = ceil($height / $tileSize);
// Create a transparent mosaic base
$mosaic = imagecreatetruecolor($width, $height);
imagesavealpha($mosaic, true);
$transparent = imagecolorallocatealpha($mosaic, 0, 0, 0, 127);
imagefill($mosaic, 0, 0, $transparent);
// Create tiles with slight color variation
for ($y = 0; $y < $rows; $y++) {
for ($x = 0; $x < $cols; $x++) {
$tileX = $x * $tileSize;
$tileY = $y * $tileSize;
$tileWidth = min($tileSize, $width - $tileX);
$tileHeight = min($tileSize, $height - $tileY);
// Create a small tile
$tile = imagecreatetruecolor($tileWidth, $tileHeight);
imagecopy($tile, $sourceImage, 0, 0, $tileX, $tileY, $tileWidth, $tileHeight);
// Apply slight brightness variation
$brightnessAdjust = rand(-50, 50); // Random variation between -120 and +120
imagefilter($tile, IMG_FILTER_BRIGHTNESS, $brightnessAdjust);
// Randomly apply a color tint
if (rand(0, 1) === 0) { // ~20% chance of tinting
$tintColor = rand(1, 3);
switch ($tintColor) {
case 1:
imagefilter($tile, IMG_FILTER_COLORIZE, 50, 0, 0); // Red tint
break;
case 2:
imagefilter($tile, IMG_FILTER_COLORIZE, 0, 50, 0); // Green tint
break;
case 3:
imagefilter($tile, IMG_FILTER_COLORIZE, 0, 0, 50); // Blue tint
break;
}
}
// Add border to each tile
$borderColor = imagecolorallocate($tile, 200, 200, 200);
imagerectangle($tile, 0, 0, $tileWidth-1, $tileHeight-1, $borderColor);
// Copy tile to mosaic
imagecopy($mosaic, $tile, $tileX, $tileY, 0, 0, $tileWidth, $tileHeight);
imagedestroy($tile);
}
}
// Save mosaic to cache
$mosaicPath = CACHE_DIR . 'mosaic_' . basename($sourceImagePath);
imagepng($mosaic, $mosaicPath);
imagedestroy($sourceImage);
imagedestroy($mosaic);
return $mosaicPath;
}
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