code: function(){
  
              this.geometry.clear();
  
              for ( var i = 0, b, l = this.children.length; i < l; i++ ) {
                  b = this.children[ i ];
                  this.geometry.addChild( b.geometry, new Physics.vector(b.state.pos).vadd(b.offset), b.state.angular.pos );
              }
  
              return this;
          }
docs: CompoundBody#refreshGeometry() -> this
  
  If the children's positions change, `refreshGeometry()` should be called to fix the shape.