/**
* Applies pixelation effect to the image.
* This is a fix for not working IMG_FILTER_PIXELATE and implements mode GD_PIXELATE_UPPERLEFT only.
* @access public
* @param integer $sizeX Block width in pixels
* @param integer $sizeY Block height in pixels
* @return void
*/
public function pixelate2($sizeX = 20, $sizeY = 20)
{
if (!is_int($sizeX) || $sizeX < 1) {
throw new \InvalidArgumentException('SizeX must be integer and atleast 1');
}
if (!is_int($sizeY) || $sizeY < 1) {
throw new \InvalidArgumentException('SizeY must be integer and atleast 1');
}
if ($sizeX == 1 && $sizeY == 1) {
throw new \InvalidArgumentException('One of the pixel sizes must differ from 1ss');
}
$width = $this->image->getWidth();
$height = $this->image->getHeight();
$image = $this->image->getResource();
for ($y = 0; $y < $height; $y += $sizeY) {
for ($x = 0; $x < $width; $x += $sizeX) {
$rgb = imagecolorsforindex($image, imagecolorat($image, $x, $y));
// get the color for current pixel
$color = imagecolorclosest($image, $rgb['red'], $rgb['green'], $rgb['blue']);
// get the closest color from palette
imagefilledrectangle($image, $x, $y, $x + $sizeX - 1, $y + $sizeY - 1, $color);
// fill block
}
}
}
/**
* Scale image to fit into a size range.
* Reduces to maximum size after possibly enlarging to minimum size.
* Range maximum has higher priority.
* For better resolution this method will first maximize and than minimize if both is needed.
* @access public
* @param integer $minWidth Minimum width
* @param integer $minHeight Minimum height
* @param integer $maxWidth Maximum width
* @param integer $maxHeight Maximum height
* @param boolean $interpolate Flag: use interpolation
* @param integer $maxMegaPixel Maxiumum megapixels
* @return object Processor object for chaining
*/
public function scaleToRange($minWidth, $minHeight, $maxWidth, $maxHeight, $interpolate, $maxMegaPixel = 50)
{
$width = $this->image->getWidth();
$height = $this->image->getHeight();
if ($width < $minWidth || $height < $minHeight) {
return $this->scaleUpToLimit($minWidth, $minHeight, $interpolate, $maxMegaPixel);
} else {
if ($width > $maxWidth || $height > $maxHeight) {
return $this->scaleDownToLimit($maxWidth, $maxHeight, $interpolate, $maxMegaPixel);
}
}
return $this;
}
