From fc9f3abfbbdedaf7a6b351e362143b9f0937d23e Mon Sep 17 00:00:00 2001
From: Thomas Geymayer <tomgey@gmail.com>
Date: Sat, 21 Jun 2014 12:26:58 +0200
Subject: [PATCH] ShivaVG: check for zero before dividing.

---
 simgear/canvas/ShivaVG/src/shVectors.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/simgear/canvas/ShivaVG/src/shVectors.c b/simgear/canvas/ShivaVG/src/shVectors.c
index 53bb1969..1fb59eb6 100644
--- a/simgear/canvas/ShivaVG/src/shVectors.c
+++ b/simgear/canvas/ShivaVG/src/shVectors.c
@@ -124,11 +124,13 @@ int shLineLineXsection(SHVector2 *o1, SHVector2 *v1,
   SHfloat DX = rightU * (-v2->y) - rightD * (-v2->x);
 /*SHfloat DY = v1.x   * rightD  - v1.y   * rightU;*/
   
-  SHfloat t1 = DX / D;
+  SHfloat t1;
   
   if (D == 0.0f)
     return 0;
-  
+
+  t1 = DX / D;
+
   xsection->x = o1->x + t1*v1->x;
   xsection->y = o1->y + t1*v1->y;
   return 1;
-- 
2.39.2