*

Assets/Editor/LSystemEditor.cs

@@ -0,0 +1,18 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEditor;
+
+[CustomEditor(typeof(LSystem))]
+public class LSystemEditor : Editor {
+
+    public override void OnInspectorGUI()
+    {
+        base.OnInspectorGUI();
+
+        if (GUILayout.Button("Rebuild"))
+        {
+            (target as LSystem).RebuildTree();
+        }
+    }
+}