Changeset 10630 for code/trunk/src/libraries/util

Timestamp:

Oct 10, 2015, 6:36:49 PM (9 years ago)

Author:

landauf

Message:

avoid division by zero errors (happened e.g. if 'myposition' and 'targetposition' were equal)

File:

• code/trunk/src/libraries/util/Math.cc (modified) (1 diff)

code/trunk/src/libraries/util/Math.cc

@@ -358 +358 @@
         float discriminant = b*b - 4*a*c;
         if (discriminant < 0)
-            return orxonox::Vector3::ZERO;
-
+            return orxonox::Vector3::ZERO; // solution is undefined (e.g. target faster than projectile)
+
+        if (a == 0.0f)
+            return orxonox::Vector3::ZERO; // avoid division by zero
         float solution = (-b + sqrt(discriminant)) / (2 * a);
+
+        if (solution == 0.0f)
+            return orxonox::Vector3::ZERO; // avoid division by zero
         float time = 1.0f / solution;