gd image class

gistfile1.php

<?php

// sort of psuedo, but a basic image class.

/*
$img = new image($file);
$img->scale(640,480)->crop(64,64,128,128);
*/

class image {

	public $img;
	
	public function __construct($filename) {
		$this->img = imagecreatefromjpeg($img);
		$this->w = imagesx($this->img);
		$this->h = imagesy($this->img);
	}

	public function scale($w,$h,$ratio=true) {
		if($ratio) list($w,$h) = magic_ratio_function($this->w,$this->h,$w,$h);

		$new = imagecreatetruecolor($w,$h);
		imagecopyresampled($new,$this->img, 0,0, 0,0, $w,$h, $this->w,$this->h);

		$this->rethrone($new);
		return $this;
	}

	public function crop($x,$y,$w,$h) {

		$new = imagecreatetruecolor($w,$h);
		imagecopyresampled($new,$this->img, 0,0, $x,$y, $w,$h, $w,$h);

		$this->rethrone($new);
		return $this;
	}

	protected function rethrone($new) {
		imagedestroy($this->img);
		$this->img = $new;
		$this->w = imagesx($this->img);
		$this->h = imagesy($this->img);
	}
	
}

?>