<?php
/* PIMG module: replaces the original image with a cropped rectangle */
class pimg_crop
{
/* Resources */
private $pimg;
// PIMG constructor
function __construct($pimg)
{
$this -> pimg = $pimg;
}
/*
Replaces the original image with a cropped rectangle specified by it's start point's X & Y and width, and height
@param: $x - x of start point
@param: $y - y of start point
@param: $width - width of rectangle
@param: $height - height of rectangle
@result: a pointer to the caller pimg class for furthur usage
*/
function init($x, $y, $width, $height)
{
/* INPUT VALIDATORS */
if ($x < 0)
{
$x = 0;
$this -> pimg -> setDebug('X start point must be >= 0', 'notice', __CLASS__);
}
if ($y < 0)
{
$y = 0;
$this -> pimg -> setDebug('Y start point must be >= 0', 'notice', __CLASS__);
}
if ($width <= 0)
$this -> pimg -> setDebug('Crop width must be > 0', 'error', __CLASS__);
if ($height <= 0)
$this -> pimg -> setDebug('Crop height must be > 0', 'error', __CLASS__);
// New empty image
$crop = $this -> pimg -> newImage(null, $width, $height);
// Crop the area
imagecopy($crop, $this -> pimg -> handle(), 0, 0, $x, $y, $width, $height);
// Update the image
$this -> pimg -> update($crop, $width, $height);
// Return the caller pimg instance
return $this -> pimg;
}
}
?>
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