From 3347aa91e85443f78617b574b461ed841aa4f7be Mon Sep 17 00:00:00 2001
From: wmayer <wmayer@users.sourceforge.net>
Date: Fri, 23 Nov 2012 19:23:10 +0100
Subject: [PATCH] Fix view fit for perspective camera by setting height angle
 to 45 deg

---
 src/Gui/View3DInventorViewer.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/Gui/View3DInventorViewer.cpp b/src/Gui/View3DInventorViewer.cpp
index 47f3b9991..6e17e1d72 100644
--- a/src/Gui/View3DInventorViewer.cpp
+++ b/src/Gui/View3DInventorViewer.cpp
@@ -1378,6 +1378,11 @@ void View3DInventorViewer::viewAll()
         group->mode = SoSkipBoundingGroup::EXCLUDE_BBOX;
     }
 
+    // Set the height angle to 45 deg
+    SoCamera* cam = this->getCamera();
+    if (cam && cam->getTypeId().isDerivedFrom(SoPerspectiveCamera::getClassTypeId()))
+        static_cast<SoPerspectiveCamera*>(cam)->heightAngle = (float)(M_PI / 4.0);
+
     // call the default implementation first to make sure everything is visible
     SoQtViewer::viewAll();