Change behaviour of the position argument of ResizeCanvasModifier

src/Modifiers/ResizeCanvasModifier.php

@@ -22,6 +22,16 @@ class ResizeCanvasModifier extends AbstractModifier
         $height = is_null($this->height) ? $image->height() : $this->height;
 
         return (new Rectangle($width, $height))
-            ->alignPivotTo($image->size(), $this->position);
+            ->alignPivotTo($image->size(), $this->position());
+    }
+
+    protected function position(): string
+    {
+        return strtr($this->position, [
+            'left' => 'right',
+            'right' => 'left',
+            'top' => 'bottom',
+            'bottom' => 'top',
+        ]);
     }
 }