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fix a potential division by zero

0.6.9-post-fixes
dahlia 2010-07-08 10:14:02 -07:00
parent d743a221e8
commit 0116b80795
1 changed files with 11 additions and 6 deletions
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17
OpenSim/Region/ScriptEngine/Shared/LSL_Types.cs
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@ -257,12 +257,17 @@ namespace OpenSim.Region.ScriptEngine.Shared
public static double Mag(Vector3 v) public static double Mag(Vector3 v)
{ {
return Math.Sqrt(v.x * v.x + v.y * v.y + v.z * v.z); return Math.Sqrt(v.x * v.x + v.y * v.y + v.z * v.z);
} }
public static Vector3 Norm(Vector3 vector) public static Vector3 Norm(Vector3 vector)
{ {
double mag = Mag(vector); double mag = Mag(vector);
return new Vector3(vector.x / mag, vector.y / mag, vector.z / mag); if (mag > 0.0)
{
double invMag = 1.0 / mag;
return vector * invMag;
}
return new Vector3(0, 0, 0);
} }
#endregion #endregion