fix velocity lmgc90 in 2D

python/lmgc90Interface.py

@@ -41,7 +41,7 @@ class ParticleProblem(object):
   
   - iterate()  : do one time iteration
   - position() : give back position of all spher
-  - velocity() : give back position of all spher
+  - velocity() : give back velocity of all spher
   - externalForces() : update external forces on particles
   
   - getMeanRadius() : return the mean radius of particles
@@ -253,9 +253,9 @@ class ParticleProblem(object):
 
       elif self._dim==2:
         for i in range(self._nbDisk):
-          self._position[i,:] = chipy.RBDY2_GetBodyVector('Coor_',int(self._d2bMap[i,0]))
-        self._position[i,2] = 0.
-        return self._position[:,:2]
+          self._velocity[i,:] = chipy.RBDY2_GetBodyVector('V____',int(self._d2bMap[i,0]))
+        self._velocity[i,2] = 0.
+        return self._velocity[:,:2]
         
       
   def externalForces(self):