Exemple #1
0
        /// <summary>
        /// Minimal degree between vectors
        /// </summary>
        public static float Angle(this PointF c1, PointF c2)
        {
            var a = c1.Angle() - c2.Angle();

            a += (float)((a > PI) ? -2 * PI : (a < -PI) ? 2 * PI : 0);

            return(a);
        }
 public static float Subtend(this PointF point, PointF a1, PointF a2)
 {
     a1 = a1.Subtract(point);
     a2 = a2.Subtract(point);
     float angleA = a1.Angle(), angleB = a2.Angle();
     if (angleA > angleB)
     {
         float swap = angleA;
         angleA = angleB;
         angleB = swap;
     }
     return (float)((angleB - angleA + (Math.PI * 2)) % (Math.PI * 2));
 }