note 84178 added to function.imagick-thumbnailimage

Here is a function to calculate the new dimensions of a thumbnail, to fit within the given dimensions on both sides. <?php /** * Calculate new image dimensions to new constraints * * @param Original X size in pixels * @param Original Y size in pixels * @return New X maximum size in pixels * @return New Y maximum size in pixels */ function scaleImage($x,$y,$cx,$cy) { //Set the default NEW values to be the old, in case it doesn't even need scaling list($nx,$ny)=array($x,$y); //If image is generally smaller, don't even bother if ($x>=$cx || $y>=$cx) { //Work out ratios if ($x>0) $rx=$cx/$x; if ($y>0) $ry=$cy/$y; //Use the lowest ratio, to ensure we don't go over the wanted image size if ($rx>$ry) { $r=$ry; } else { $r=$rx; } //Calculate the new size based on the chosen ratio $nx=intval($x*$r); $ny=intval($y*$r); } //Return the results return array($nx,$ny); } ?> Use it like this: <?php //Read original image and create Imagick object $thumb=new Imagick($originalImageFilename); //Work out new dimensions list($newX,$newY)=scaleImage( $thumb->getImageWidth(), $thumb->getImageHeight(), $newMaximumWidth, $newMaximumHeight); //Scale the image $thumb->thumbnailImage($newX,$newY); //Write the new image to a file $thumb->writeImage($thumbnailFilename); ?> ---- Server IP: 92.48.100.16 Probable Submitter: 217.64.123.94 ---- Manual Page -- http://www.php.net/manual/en/function.imagick-thumbnailimage.php Edit -- https://master.php.net/note/edit/84178 Del: integrated -- https://master.php.net/note/delete/84178/integrated Del: useless -- https://master.php.net/note/delete/84178/useless Del: bad code -- https://master.php.net/note/delete/84178/bad+code Del: spam -- https://master.php.net/note/delete/84178/spam Del: non-english -- https://master.php.net/note/delete/84178/non-english Del: in docs -- https://master.php.net/note/delete/84178/in+docs Del: other reasons-- https://master.php.net/note/delete/84178 Reject -- https://master.php.net/note/reject/84178 Search -- https://master.php.net/manage/user-notes.php