Changed atan to atan2 for transfroming coordinates from cartesian to spheri...

Samo Penic

2014-04-17 e9c87efeb9235748e8d19a3f5a067ec442d8a500

 src/frame.c

@@ -2,6 +2,7 @@
#include "general.h"
#include "cell.h"
#include "frame.h"

ts_bool centermass(ts_vesicle *vesicle){
    ts_uint i,j, n=vesicle->vlist->n;
    ts_vertex **vtx=vesicle->vlist->vtx;