public static double AngleBetweenJoints(MyJoint j1, MyJoint j2, MyJoint j3)
        {
            double Angulo = 0;
            double shrhX  = j1.getX() - j2.getX();
            double shrhY  = j1.getY() - j2.getY();
            double shrhZ  = j1.getZ() - j2.getZ();
            double hsl    = vectorNorm(shrhX, shrhY, shrhZ);
            double unrhX  = j3.getX() - j2.getX();
            double unrhY  = j3.getY() - j2.getY();
            double unrhZ  = j3.getZ() - j2.getZ();
            double hul    = vectorNorm(unrhX, unrhY, unrhZ);
            double mhshu  = shrhX * unrhX + shrhY * unrhY + shrhZ * unrhZ;
            double x      = mhshu / (hul * hsl);

            if (x != Double.NaN)
            {
                if (-1 <= x && x <= 1)
                {
                    double angleRad = Math.Acos(x);
                    Angulo = angleRad * (180.0 / Math.PI);
                }
                else
                {
                    Angulo = 0;
                }
            }
            else
            {
                Angulo = 0;
            }

            return(Angulo);
        }
 public MyAngle()
 {
     _myJoint = new MyJoint[25];
     angle    = new int[25];
     for (int i = 0; i < 25; i++)
     {
         _myJoint[i] = new MyJoint();
     }
 }