This method has not been properly implemented it seems - it has no effect whatsoever on the image.(PECL imagick 2, PECL imagick 3)
Imagick::affineTransformImage — Transforms an image
Transforms an image as dictated by the affine matrix.
matrixThe affine matrix
   Restituisce true in caso di successo.
  
Example #1 Imagick::affineTransformImage()
<?php
function affineTransformImage($imagePath) {
    $imagick = new \Imagick(realpath($imagePath));
    $draw = new \ImagickDraw();
    $angle = deg2rad(40);
    $affineRotate = array(
        "sx" => cos($angle), "sy" => cos($angle), 
        "rx" => sin($angle), "ry" => -sin($angle), 
        "tx" => 0, "ty" => 0,
    );
    $draw->affine($affineRotate);
    $imagick->affineTransformImage($draw);
    header("Content-Type: image/jpg");
    echo $imagick->getImageBlob();
}
?>This method has not been properly implemented it seems - it has no effect whatsoever on the image.This function is obsolete. Use distortImage() instead, with the affine transformation constant, and an array of six values, sx, rx, ry, sy, tx, ty.