/**
* Resizes image.
* @access public
* @param integer $width New width
* @param integer $height New height
* @param boolean $interpolate Flag: use interpolation
* @return object Processor object for chaining
* @throws InvalidArgumentException if width is not an integer value
* @throws InvalidArgumentException if height is not an integer value
* @throws OutOfRangeException if width is lower than 1
* @throws OutOfRangeException if height is lower than 1
* @throws OutOfRangeException if resulting image has more mega pixels than allowed
*/
public function resize($width, $height, $interpolate = TRUE)
{
if (!is_int($width)) {
throw new \InvalidArgumentException('Width must be integer');
}
if (!is_int($height)) {
throw new \InvalidArgumentException('Height must be integer');
}
if ($width < 1) {
throw new \OutOfRangeException('Width must be atleast 1');
}
if ($height < 1) {
throw new \OutOfRangeException('Height must be atleast 1');
}
if ($this->image->getWidth() == $width && $this->image->getHeight() == $height) {
return $this;
}
if ($this->maxMegaPixels && $width * $height > $this->maxMegaPixels * 1024 * 1024) {
throw new \OutOfRangeException('Larger than ' . $this->maxMegaPixels . 'MP (' . $width . 'x' . $height . ')');
}
$image = new \CeusMedia\Image\Image();
$image->create($width, $height);
$image->setType($this->image->getType());
$parameters = array_merge(array($image->getResource(), $this->image->getResource()), array(0, 0, 0, 0), array($width, $height), array($this->image->getWidth(), $this->image->getHeight()));
$function = $interpolate ? 'imagecopyresampled' : 'imagecopyresized';
// function to use depending on interpolation
$reflection = new \ReflectionFunction($function);
// reflect function
$reflection->invokeArgs($parameters);
// call function with parameters
$this->image->setResource($image->getResource());
// replace held image resource object by result
return $this;
}
