code: public void set(double x, double y, double z) {
          this.MODE = POINTS_3D;
          this.x = x;
          this.y = y;
          this.z = z;
      }
docs: Sets x,y,z-coordinate.
  
  @param x The x-coordinate of the Point.
  @param y The y-coordinate of the Point.
  @param z The z-coordinate of the Point.