/**
* Add a certain image to the classification.
*
* @param wsgen\MetaImage $image
*/
public function classify(wsgen\MetaImage $image)
{
$this->logger->log(E_NOTICE, "Classifying image '%s'.", $image->getFilename());
$colortable = array();
list($width, $height) = $image->getResolution();
for ($y = 0; $y < $height; ++$y) {
for ($x = 0; $x < $width; ++$x) {
$color = $image->getColorAt($x, $y);
if ($color[3] > 127) {
// Skip all transparent pixels with a transparency of more
// than 50%
continue;
}
if (($matchIndex = $this->findMatch($color, $colortable, self::INTER_COLOR_THRESHOLD)) === false) {
$colortable[] = array('color' => $color, 'matches' => 1);
} else {
++$colortable[$matchIndex]['matches'];
$this->updateMatch($matchIndex, $colortable, $color);
}
}
}
usort($colortable, function ($a, $b) {
return $b['matches'] - $a['matches'];
});
$primaryColor = $colortable[0]['color'];
// Search for an already defined color in the classification, which
// matches the primary color of our image.
if (($matchIndex = $this->findMatch($primaryColor, $this->classification, self::INTER_PICTURE_THRESHOLD)) === false) {
$this->classification[] = array('color' => $primaryColor, 'images' => array($image));
} else {
$this->classification[$matchIndex]['images'][] = $image;
$this->updateMatch($matchIndex, $this->classification, $primaryColor);
}
}
/**
* Layout the given image.
*
* This method may be called more than once with the same imagepath. This
* layout manager takes care of this to ensure every image is only rendered
* once.
*
* @param wsgen\MetaImage $image
* @return void
*/
public function layoutImage(wsgen\MetaImage $image)
{
if (array_key_exists($image->getFilename(), $this->layout)) {
// The image has already been processed.
return;
}
$this->logger->log(E_NOTICE, "Adding image '%s' to layout.", basename($image->getFilename()));
$resolution = $image->getResolution();
$filename = $image->getFilename();
$this->layout[$filename] = array(array(0, $this->currentY), $resolution);
$this->images[$filename] = $image;
$this->width = max($this->width, $resolution[0]);
$this->height += $resolution[1];
$this->currentY += $resolution[1];
}
/**
* Construct the object taking the image to provide information for as
* argument.
*
* @param string $filename
*/
public function __construct($filename)
{
parent::__construct($filename);
$this->resource = $this->loadImage($filename);
}
public function __construct($filename, $resolution)
{
parent::__construct($filename);
$this->resource = imagecreatefrompng($filename);
$this->resolution = $resolution;
}
/**
* Draw an image to the provided coordinates.
*
* @param wsgen\MetaImage\GD $image
* @param int $x
* @param int $y
* @throws RuntimeException if the image could not be drawn.
*/
public function drawImage(wsgen\MetaImage $image, $x, $y)
{
$this->logger->log(E_NOTICE, "Drawing image '%s' to sprite.", basename($image->getFilename()));
$srcDimensions = $image->getResolution();
imagecopy($this->image, $image->getResource(), $x, $y, 0, 0, $srcDimensions[0], $srcDimensions[1]);
}