/// <summary>
/// Calculates the angle of the line segment in degrees
/// </summary>
/// <param name="segment"></param>
/// <returns></returns>
public static double CalculateAngle(this LineSegment2D segment)
{
double angle;
Vector2D wallUnitVector = segment.CalculateUnitVector();
if (wallUnitVector.X == 0)
{
if (wallUnitVector.Y > 0)
{
angle = 90;
}
else
{
angle = -90;
}
}
else
{
angle = Math.Atan(wallUnitVector.Y / wallUnitVector.X) * 180 / Math.PI;
}
return(angle);
}