From 7150b27aea500e5384ae90c294b0498a3dcc7997 Mon Sep 17 00:00:00 2001
From: ouv <ouv@opencascade.com>
Date: Wed, 20 Apr 2011 09:11:47 +0000
Subject: [PATCH] To avoid SIGSEGV caused by pressing arrow key just after
 creation of the VTK view

---
 src/SVTK/SVTK_InteractorStyle.cxx | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/SVTK/SVTK_InteractorStyle.cxx b/src/SVTK/SVTK_InteractorStyle.cxx
index 483a3fbbb..e95c0c50f 100644
--- a/src/SVTK/SVTK_InteractorStyle.cxx
+++ b/src/SVTK/SVTK_InteractorStyle.cxx
@@ -1307,6 +1307,9 @@ void SVTK_InteractorStyle::Place(const int theX, const int theY)
 */
 void SVTK_InteractorStyle::TranslateView(int toX, int toY, int fromX, int fromY)
 {
+  if (GetCurrentRenderer() == NULL)
+    return;
+
   vtkCamera *cam = GetCurrentRenderer()->GetActiveCamera();
   double viewFocus[4], focalDepth, viewPoint[3];
   vtkFloatingPointType newPickPoint[4], oldPickPoint[4], motionVector[3];
-- 
2.39.2