ImagickDraw::affine

Adjusts the current affine transformation matrix

&reftitle.description; public `bool` `ImagickDraw::affine` `array` `affine` &warn.undocumented.func;

Adjusts the current affine transformation matrix with the specified affine transformation matrix.

&reftitle.parameters;

`affine`

- Affine matrix parameters

&reftitle.returnvalues;

&return.void;

&reftitle.examples;

### `ImagickDraw::affine` example

    <?php
    function affine($strokeColor, $fillColor, $backgroundColor) {

        $draw = new \ImagickDraw();

        $draw->setStrokeWidth(1);
        $draw->setStrokeOpacity(1);
        $draw->setStrokeColor($strokeColor);
        $draw->setFillColor($fillColor);

        $draw->setStrokeWidth(2);

        $PI = 3.141592653589794;
        $angle = 60 * $PI / 360;

        //Scale the drawing co-ordinates.
        $affineScale = array("sx" => 1.75, "sy" => 1.75, "rx" => 0, "ry" => 0, "tx" => 0, "ty" => 0);

        //Shear the drawing co-ordinates.
        $affineShear = array("sx" => 1, "sy" => 1, "rx" => sin($angle), "ry" => -sin($angle), "tx" => 0, "ty" => 0);

        //Rotate the drawing co-ordinates. The shear affine matrix
        //produces incorrectly scaled drawings.
        $affineRotate = array("sx" => cos($angle), "sy" => cos($angle), "rx" => sin($angle), "ry" => -sin($angle), "tx" => 0, "ty" => 0,);

        //Translate (offset) the drawing
        $affineTranslate = array("sx" => 1, "sy" => 1, "rx" => 0, "ry" => 0, "tx" => 30, "ty" => 30);

        //The identiy affine matrix
        $affineIdentity = array("sx" => 1, "sy" => 1, "rx" => 0, "ry" => 0, "tx" => 0, "ty" => 0);

        $examples = [$affineScale, $affineShear, $affineRotate, $affineTranslate, $affineIdentity,];

        $count = 0;

        foreach ($examples as $example) {
            $draw->push();
            $draw->translate(($count % 2) * 250, intval($count / 2) * 250);
            $draw->translate(100, 100);
            $draw->affine($example);
            $draw->rectangle(-50, -50, 50, 50);
            $draw->pop();
            $count++;
        }

        //Create an image object which the draw commands can be rendered into
        $image = new \Imagick();
        $image->newImage(500, 750, $backgroundColor);
        $image->setImageFormat("png");

        //Render the draw commands in the ImagickDraw object
        //into the image.
        $image->drawImage($draw);

        //Send the image to the browser
        header("Content-Type: image/png");
        echo $image->getImageBlob();
    }

    ?>