From 4b063ab098f80d4710c0f9d6ea29c7ea40bfc81c Mon Sep 17 00:00:00 2001
From: Oliver Vogel <oliver@olivervogel.com>
Date: Thu, 11 Nov 2021 15:21:50 +0000
Subject: [PATCH] RotateModifier

---
 src/Drivers/Gd/Modifiers/RotateModifier.php | 50 +++++++++++++++++++++
 1 file changed, 50 insertions(+)
 create mode 100644 src/Drivers/Gd/Modifiers/RotateModifier.php

diff --git a/src/Drivers/Gd/Modifiers/RotateModifier.php b/src/Drivers/Gd/Modifiers/RotateModifier.php
new file mode 100644
index 00000000..6c8b507a
--- /dev/null
+++ b/src/Drivers/Gd/Modifiers/RotateModifier.php
@@ -0,0 +1,50 @@
+<?php
+
+namespace Intervention\Image\Drivers\Gd\Modifiers;
+
+use Intervention\Image\Interfaces\FrameInterface;
+use Intervention\Image\Interfaces\ImageInterface;
+use Intervention\Image\Interfaces\ModifierInterface;
+
+class RotateModifier implements ModifierInterface
+{
+    /**
+     * Rotation angle
+     *
+     * @var float
+     */
+    protected $angle;
+
+    /**
+     * Background color
+     *
+     * @var mixed
+     */
+    protected $backgroundcolor;
+
+    /**
+     * Create new modifier
+     *
+     * @param float $angle
+     */
+    public function __construct(float $angle, $backgroundcolor = null)
+    {
+        $this->angle = $angle;
+        $this->backgroundcolor = $backgroundcolor;
+    }
+
+    public function apply(ImageInterface $image): ImageInterface
+    {
+        foreach ($image as $frame) {
+            imagerotate($frame->getCore(), $this->rotationAngle(), 0);
+        }
+
+        return $image;
+    }
+
+    protected function rotationAngle(): float
+    {
+        // restrict rotations beyond 360 degrees, since the end result is the same
+        return fmod($this->angle, 360);
+    }
+}