From dcbb7456ac6e00cc9b5b5b28ebde0b0835fa771b Mon Sep 17 00:00:00 2001
From: cignoni <paolo.cignoni@isti.cnr.it>
Date: Mon, 22 Sep 2008 23:10:00 +0000
Subject: [PATCH] Added by default rotation on middle + alt, (almost a standard
 on various 3d packages). Kind patch submitted by Sebastian Herholz.

---
 wrap/gui/trackball.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/wrap/gui/trackball.cpp b/wrap/gui/trackball.cpp
index 98c17728..ce56ec7a 100644
--- a/wrap/gui/trackball.cpp
+++ b/wrap/gui/trackball.cpp
@@ -149,6 +149,7 @@ void Trackball::setDefaultMapping () {
   modes[BUTTON_MIDDLE] = new PanMode ();
   modes[BUTTON_LEFT | KEY_SHIFT] = new ScaleMode ();
   modes[BUTTON_LEFT | KEY_ALT] = new ZMode ();
+  modes[BUTTON_MIDDLE | KEY_ALT] = new SphereMode ();
   modes[WHEEL] = new ScaleMode ();
   SetCurrentAction ();
 }