@Override public State getNextState(State state) { State state1 = new State(state); double d; d = Util.rand(-da, da); state1.ax += d; if (state1.ax > maxa || state1.ax < -maxa) state1.ax -= d; d = Util.rand(-da, da); state1.ay += d; if (state1.ay > maxa || state1.ay < -maxa) state1.ay -= d; d = Util.rand(-da, da); state1.az += d; if (state1.az > maxa || state1.az < -maxa) state1.az -= d; d = Util.rand(-dd, dd); state1.dx += d; if (state1.dx > maxd || state1.dx < -maxd) state1.dx -= d; d = Util.rand(-dd, dd); state1.dy += d; if (state1.dy > maxd || state1.dy < -maxd) state1.dy -= d; d = Util.rand(-dd, dd); state1.dz += d; if (state1.dz > maxd || state1.dz < -maxd) state1.dz -= d; return state1; }