The ImagickDraw::affine() function is an inbuilt function in PHP which is used to adjust the current affine transformation matrix.
Syntax:
bool ImagickDraw::affine( array $affine )
Parameters: This function accepts a single parameter $affine which holds the array containing the affine matrix parameters.
Return Value: This function returns TRUE on success.
Exceptions: This function throws ImagickException on error.
Below given programs illustrate the ImagickDraw::affine() function in PHP:
Program 1:
<?php // Create a new Imagick object $imagick = new Imagick();    // Create a image on imagick object with // green background $imagick->newImage(800, 250, 'green');    // Create a new ImagickDraw object $draw = new ImagickDraw();    // Translate the object $draw->translate(100, 100);    // Apply the affine() function $draw->affine(array("sx" => 7, "sy" => 1,                     "rx" => 9, "ry" => 0,                     "tx" => 200, "ty" => 0));    // Draw a rectangle $draw->rectangle(-50, -50, 50, 50);    // Render the draw commands in the ImagickDraw object $imagick->drawImage($draw);    // Show the output $imagick->setImageFormat("png"); header("Content-Type: image/png"); echo $imagick->getImageBlob(); ?> |
Output:
Program 2:
<?php //Create a new Imagick object $imagick = new Imagick();   // Create a image on imagick object with // purple background $imagick->newImage(800, 250, 'purple');   // Create a new ImagickDraw object $draw = new ImagickDraw();   // Translate the object $draw->translate(100, 100);   // Apply the affine() function $draw->affine(array("sx" => 2, "sy" => 1,                     "rx" => 0, "ry" => 0,                     "tx" => 0, "ty" => 0));   // Draw a rectangle $draw->rectangle(0, -50, 50, 50);   // Draw a rectangle $draw->rectangle(100, 50, 150, 100);   // Draw a rectangle $draw->rectangle(200, -10, 250, 90);   // Render the draw commands in the ImagickDraw object $imagick->drawImage($draw);   // Show the output $imagick->setImageFormat("png"); header("Content-Type: image/png"); echo $imagick->getImageBlob(); ?> |
Output:
Reference: https://www.php.net/manual/en/imagickdraw.affine.php
