Vec2D oldVec=itLarge->Vector;
                        Vec2D oldVec2=iLarge->Vector;
                        itLarge->Vector  = (((itLarge->weight - iLarge->weight)  *itLarge->Vector +2*iLarge->weight  *iLarge->Vector) /(itLarge->weight+iLarge->weight));
                        iLarge->Vector   = (((iLarge->weight  - itLarge->weight) *iLarge->Vector  +2*itLarge->weight *oldVec)/(itLarge->weight+iLarge->weight));
                        itLarge->VecToSpeed();
                        iLarge->VecToSpeed();
                        itLarge->Vector.normalize();
                        iLarge->Vector.normalize();
                        oldVec.normalize();
                        oldVec2.normalize();
                        itLarge->Angle+=std::acos(itLarge->Vector.DotProduct(itLarge->Vector,oldVec))*Pi/180;
                        iLarge->Angle+=std::acos(iLarge->Vector.DotProduct(iLarge->Vector,oldVec2))*Pi/180;