From c7185649ce3573e617c64b14b3c5c42d6046d681 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jacob=20St=C3=B8ren?= <jacob.storen@ceetronsolutions.com>
Date: Fri, 26 Jan 2018 11:15:32 +0100
Subject: [PATCH] Caf: Guard against crash when point of interest is not set
 correctly

---
 Fwk/AppFwk/cafViewer/cafTrackBallBasedNavigation.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Fwk/AppFwk/cafViewer/cafTrackBallBasedNavigation.cpp b/Fwk/AppFwk/cafViewer/cafTrackBallBasedNavigation.cpp
index 519b5d8534..48c9be65f5 100644
--- a/Fwk/AppFwk/cafViewer/cafTrackBallBasedNavigation.cpp
+++ b/Fwk/AppFwk/cafViewer/cafTrackBallBasedNavigation.cpp
@@ -190,7 +190,7 @@ cvf::ref<cvf::Ray> caf::TrackBallBasedNavigation::createZoomRay(int cvfXPos, int
     cvf::Camera* cam = m_viewer->mainCamera();
     ray = cam->rayFromWindowCoordinates(cvfXPos, cvfYPos);
 
-    if (cam->projection() == cvf::Camera::ORTHO)
+    if (ray.notNull() && cam->projection() == cvf::Camera::ORTHO)
     {
         cvf::Vec3d camDir = cam->direction();
         cvf::Plane focusPlane;