Voting

The Note You're Voting On

4 years ago
Control Points for DISTORTION_PERSPECTIVE are pairs of x0, y0, x1, y1 coordinates, where x0/y0 is the original point and x1/y1 is the destination point, 

e.g. for a four point distortion:

    <?php 

    $im = new imagick( $fn); 

    $w=$im->getImageWidth();
    $h=$im->getImageHeight();
    $im->setImageFormat('png');

    $controlPoints = array(
                    $tLx, $tLy, 0, 0,  // top left
                    $tRx, $tRy, $w, 0, // top right
                    $bRx, $bRy, $w, $h, // bottom right
                    $bLx, $bLy, 0, $h // bottom left
                );

    /* Perform the distortion */
    $im->distortImage(Imagick::DISTORTION_PERSPECTIVE, $controlPoints, false);

    // Output the image
    $output = $im->getimageblob();
    $outputtype = $im->getFormat();

    header("Content-type: $outputtype");
    echo $output;
     
    ?>
<< Back to user notes page