From 5ac7aa7f55b52c9bfd847faeb36e531c4aaceadc Mon Sep 17 00:00:00 2001
From: mkr <mkr@opencascade.com>
Date: Wed, 30 Apr 2008 07:00:37 +0000
Subject: [PATCH] Fix for bug IPAL19512: Error message is shown after selection
 of Gauss point outside of segmentation cursor.

---
 src/VTKViewer/VTKViewer_Trihedron.cxx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/VTKViewer/VTKViewer_Trihedron.cxx b/src/VTKViewer/VTKViewer_Trihedron.cxx
index f50d67b30..d9f5d3321 100755
--- a/src/VTKViewer/VTKViewer_Trihedron.cxx
+++ b/src/VTKViewer/VTKViewer_Trihedron.cxx
@@ -81,7 +81,7 @@ void VTKViewer_UnScaledActor::Render(vtkRenderer *theRenderer)
     vtkFloatingPointType aPrecision = 1.0E-3;
     vtkFloatingPointType anOldScale = GetScale()[0];
     vtkFloatingPointType aScale = mySize*aWorldDiag/aWinDiag/aLength*sqrt(vtkFloatingPointType(aSize[0])/vtkFloatingPointType(aSize[1]));
-    if(fabs(aScale - anOldScale)/aScale > aPrecision){
+    if(aScale != 0.0 && fabs(aScale - anOldScale)/aScale > aPrecision){
       SetScale(aScale);
     }
   }
-- 
2.39.2