Added modifiers to mirror images horizontally & vertically

src/Drivers/Abstract/AbstractImage.php

@@ -153,6 +153,30 @@ abstract class AbstractImage
         );
     }
 
+    /**
+     * Creates a vertical mirror image
+     *
+     * @return ImageInterface
+     */
+    public function flip(): ImageInterface
+    {
+        return $this->modify(
+            $this->resolveDriverClass('Modifiers\FlipModifier')
+        );
+    }
+
+    /**
+     * Creates a horizontal mirror image
+     *
+     * @return ImageInterface
+     */
+    public function flop(): ImageInterface
+    {
+        return $this->modify(
+            $this->resolveDriverClass('Modifiers\FlopModifier')
+        );
+    }
+
     public function place($element, string $position = 'top-left', int $offset_x = 0, int $offset_y = 0): ImageInterface
     {
         return $this->modify(

src/Drivers/Gd/Modifiers/FlipModifier.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace Intervention\Image\Drivers\Gd\Modifiers;
+
+use Intervention\Image\Interfaces\ImageInterface;
+use Intervention\Image\Interfaces\ModifierInterface;
+
+class FlipModifier implements ModifierInterface
+{
+    public function apply(ImageInterface $image): ImageInterface
+    {
+        foreach ($image as $frame) {
+            imageflip($frame->getCore(), IMG_FLIP_VERTICAL);
+        }
+
+        return $image;
+    }
+}

src/Drivers/Gd/Modifiers/FlopModifier.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace Intervention\Image\Drivers\Gd\Modifiers;
+
+use Intervention\Image\Interfaces\ImageInterface;
+use Intervention\Image\Interfaces\ModifierInterface;
+
+class FlopModifier implements ModifierInterface
+{
+    public function apply(ImageInterface $image): ImageInterface
+    {
+        foreach ($image as $frame) {
+            imageflip($frame->getCore(), IMG_FLIP_HORIZONTAL);
+        }
+
+        return $image;
+    }
+}

src/Drivers/Imagick/Modifiers/FlipModifier.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace Intervention\Image\Drivers\Imagick\Modifiers;
+
+use Intervention\Image\Interfaces\ImageInterface;
+use Intervention\Image\Interfaces\ModifierInterface;
+
+class FlipModifier implements ModifierInterface
+{
+    public function apply(ImageInterface $image): ImageInterface
+    {
+        foreach ($image as $frame) {
+            $frame->getCore()->flipImage();
+        }
+
+        return $image;
+    }
+}

src/Drivers/Imagick/Modifiers/FlopModifier.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace Intervention\Image\Drivers\Imagick\Modifiers;
+
+use Intervention\Image\Interfaces\ImageInterface;
+use Intervention\Image\Interfaces\ModifierInterface;
+
+class FlopModifier implements ModifierInterface
+{
+    public function apply(ImageInterface $image): ImageInterface
+    {
+        foreach ($image as $frame) {
+            $frame->getCore()->flopImage();
+        }
+
+        return $image;
+    }
+}

tests/Drivers/Gd/Modifiers/FlipFlopModifierTest.php

@@ -0,0 +1,34 @@
+<?php
+
+namespace Intervention\Image\Tests\Drivers\Gd\Modifiers;
+
+use Intervention\Image\Drivers\Gd\Modifiers\FlipModifier;
+use Intervention\Image\Drivers\Gd\Modifiers\FlopModifier;
+use Intervention\Image\Tests\TestCase;
+use Intervention\Image\Tests\Traits\CanCreateGdTestImage;
+
+/**
+ * @requires extension gd
+ * @covers \Intervention\Image\Drivers\Gd\Modifiers\FlipModifier
+ * @covers \Intervention\Image\Drivers\Gd\Modifiers\FlopModifier
+ */
+class FlipFlopModifierTest extends TestCase
+{
+    use CanCreateGdTestImage;
+
+    public function testFlipImage(): void
+    {
+        $image = $this->createTestImage('tile.png');
+        $this->assertEquals('b4e000', $image->pickColor(0, 0)->toHex());
+        $image->modify(new FlipModifier());
+        $this->assertEquals('000000', $image->pickColor(0, 0)->toHex());
+    }
+
+    public function testFlopImage(): void
+    {
+        $image = $this->createTestImage('tile.png');
+        $this->assertEquals('b4e000', $image->pickColor(0, 0)->toHex());
+        $image->modify(new FlopModifier());
+        $this->assertEquals('000000', $image->pickColor(0, 0)->toHex());
+    }
+}

tests/Drivers/Imagick/Modifiers/FlipFlopModifierTest.php

@@ -0,0 +1,34 @@
+<?php
+
+namespace Intervention\Image\Tests\Drivers\Imagick\Modifiers;
+
+use Intervention\Image\Drivers\Imagick\Modifiers\FlipModifier;
+use Intervention\Image\Drivers\Imagick\Modifiers\FlopModifier;
+use Intervention\Image\Tests\TestCase;
+use Intervention\Image\Tests\Traits\CanCreateImagickTestImage;
+
+/**
+ * @requires extension imagick
+ * @covers \Intervention\Image\Drivers\Imagick\Modifiers\FlipModifier
+ * @covers \Intervention\Image\Drivers\Imagick\Modifiers\FlopModifier
+ */
+class FlipFlopModifierTest extends TestCase
+{
+    use CanCreateImagickTestImage;
+
+    public function testFlipImage(): void
+    {
+        $image = $this->createTestImage('tile.png');
+        $this->assertEquals('b4e000', $image->pickColor(0, 0)->toHex());
+        $image->modify(new FlipModifier());
+        $this->assertEquals('000000', $image->pickColor(0, 0)->toHex());
+    }
+
+    public function testFlopImage(): void
+    {
+        $image = $this->createTestImage('tile.png');
+        $this->assertEquals('b4e000', $image->pickColor(0, 0)->toHex());
+        $image->modify(new FlopModifier());
+        $this->assertEquals('000000', $image->pickColor(0, 0)->toHex());
+    }
+}