bgc-net/BasicGeometry/TurnFP64.cs

/*
 * Author: Andrey Pokidov
 * License: Apache-2.0
 * Date: 18 Nov 2024
 */

namespace BasicGeometry
{
    public class TurnFP64
    {
        public static double ToRadians(double turns)
        {
            return turns * RadianFP64.TWO_PI;
        }

        public static double ToDegrees(double turns)
        {
            return turns * 360.0;
        }

        public static double ToUnits(double turns, AngleUnit toUnit)
        {
            if (toUnit == AngleUnit.RADIANS)
            {
                return turns * RadianFP64.TWO_PI;
            }

            if (toUnit == AngleUnit.DEGREES)
            {
                return turns * 360.0;
            }

            return turns;
        }

        public static double Normalize(double turns, AngleRange range)
        {
            if (range == AngleRange.UNSIGNED_RANGE)
            {
                if (0.0 <= turns && turns < 1.0)
                {
                    return turns;
                }
            }
            else
            {
                if (-0.5 < turns && turns <= 0.5)
                {
                    return turns;
                }
            }

            double rest = turns - Math.Floor(turns);

            if (range == AngleRange.SIGNED_RANGE && rest > 0.5)
            {
                rest -= 1.0;
            }

            return rest;
        }
    }
}