From cb563199249a6e065927e7aed84cdc41ea9d826d Mon Sep 17 00:00:00 2001
From: Ellpeck <megamaximal@gmail.com>
Date: Wed, 18 Mar 2020 16:47:14 +0100
Subject: [PATCH] added easy scale origin function to custom draw groups

---
 MLEM.Ui/Elements/CustomDrawGroup.cs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/MLEM.Ui/Elements/CustomDrawGroup.cs b/MLEM.Ui/Elements/CustomDrawGroup.cs
index 43651d5..8220975 100644
--- a/MLEM.Ui/Elements/CustomDrawGroup.cs
+++ b/MLEM.Ui/Elements/CustomDrawGroup.cs
@@ -42,6 +42,10 @@ namespace MLEM.Ui.Elements {
             }
         }
 
+        public void ScaleOrigin(float scale, Vector2? origin = null) {
+            this.Transform = Matrix.CreateScale(scale, scale, 0) * Matrix.CreateTranslation(new Vector3((1 - scale) * (origin ?? this.DisplayArea.Center), 0));
+        }
+
         public delegate void BeginDelegate(CustomDrawGroup element, GameTime time, SpriteBatch batch, float alpha, BlendState blendState, SamplerState samplerState, Matrix matrix);
 
         public delegate Matrix TransformCallback(CustomDrawGroup element, GameTime time, Matrix matrix);