From 65d9d794d9aca3159a59fdc867ee422087e11306 Mon Sep 17 00:00:00 2001
From: Stanislaw Skowronek <skylark@disorder.sko>
Date: Sat, 16 Nov 2013 19:48:15 -0500
Subject: Fix the one particle bug.


diff --git a/src/simulation/Simulation.cpp b/src/simulation/Simulation.cpp
index 1cb83a9..eb8f065 100644
--- a/src/simulation/Simulation.cpp
+++ b/src/simulation/Simulation.cpp
@@ -5069,7 +5069,10 @@ void Simulation::update_solids()
         }
 
         if(sld->an) {
-            sld->vrot = atanf(sld->arot / av);
+            if(av > 0.0001f)
+                sld->vrot = atanf(sld->arot / av);
+            else
+                sld->vrot = 0.0f;
 #ifdef DEBUG_SOLID
             printf("Solid %d: count %d, vx %f, vy %f, vrot %f, b %d/%d, cdx %f, cdy %f\n", i, sld->an, sld->vx, sld->vy, sld->vrot, sld->bf, bd, sld->cdx, sld->cdy);
             if(sld->bf) {
--
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