fix periodic condition

python/lmgc90Interface.py

@@ -86,6 +86,9 @@ class ParticleProblem(object):
       chipy.utilities_logMes('READ INI Vloc Rloc')
       chipy.ReadIniVlocRloc()
 
+      if (period):
+        chipy.SetPeriodicCondition(xperiod=xp,yperiod=yp)
+      
       chipy.PRPRx_UseCpCundallDetection(30)
 
       chipy.OpenPostproFiles()