m = new THREE.CylinderGeometry(OBJ_SIZE, OBJ_SIZE, OBJ_SIZE*2, 8);
                var material = new THREE.MeshLambertMaterial( { color: randColor(), shading: THREE.FlatShading  } );
                var cylinder = new THREE.Mesh( geom, material );
                cylinder.position.set(randPos(), randPos(), randPos());
                cylinder.velocity = new THREE.Vector3(randVel(), randVel(), randVel());
                cylinder.spin = new THREE.Euler(randSpin(),randSpin(),randSpin());
              