// 立方体の座標データ [Cube.java] 
  public class Cube { 
     final double L=80; 
     double [][] x={{0,0,L,L}, {L,L,L,L}, {0,0,L,L}, 
                    {0,0,0,0}, {0,L,L,0}, {0,L,L,0}}; 
     double [][] y={{0,L,L,0}, {0,L,L,0}, {L,L,L,L}, 
                    {0,0,L,L}, {0,0,0,0}, {0,0,L,L}}; 
     double [][] z={{0,0,0,0}, {0,0,L,L}, {0,L,L,0}, 
                    {0,L,L,0}, {0,0,L,L}, {L,L,L,L}}; 
  } //end Cube