/// <summary>
/// returns the angle in desired mode between 0 and 180
/// </summary>
/// <param name="firstPoint"></param>
/// <param name="middlePoint"></param>
/// <param name="lastPoint"></param>
/// <returns></returns>
public static double GetAngle(IPoint firstPoint, IPoint middlePoint, IPoint lastPoint, AngleMode mode = AngleMode.Radian)
{
var radianAngle = Math.Acos(GetCosineOfAngle(firstPoint, middlePoint, lastPoint));
if (mode == AngleMode.Radian)
{
return(radianAngle);
}
else if (mode == AngleMode.Degree)
{
return(UnitConversion.RadianToDegree(radianAngle));
}
else if (mode == AngleMode.Grade)
{
return(UnitConversion.RadianToGrade(radianAngle));
}
throw new NotImplementedException("SpatialUtility > GetAngle");
}
