/*
 * Author: Andrey Pokidov
 * License: Apache-2.0
 * Date: 1 Feb 2019
 */

namespace BGC
{
    public static class AngleFP32
    {
        public static float ToRadians(float angle, AngleUnit unit)
        {
            if (unit == AngleUnit.DEGREES)
            {
                return angle * DegreeFP32.RADIANS_IN_DEGREE;
            }

            if (unit == AngleUnit.TURNS)
            {
                return angle * RadianFP32.TWO_PI;
            }

            return angle;
        }

        public static float ToDegrees(float angle, AngleUnit unit)
        {
            if (unit == AngleUnit.RADIANS)
            {
                return angle * RadianFP32.DEGREES_IN_RADIAN;
            }

            if (unit == AngleUnit.TURNS)
            {
                return angle * 360.0f;
            }

            return angle;
        }

        public static float ToTurns(float angle, AngleUnit unit)
        {
            if (unit == AngleUnit.RADIANS)
            {
                return angle * RadianFP32.TURNS_IN_RADIAN;
            }

            if (unit == AngleUnit.DEGREES)
            {
                return angle * DegreeFP32.TURNS_IN_DEGREE;
            }

            return angle;
        }

        public static float GetFullCircle(AngleUnit unit)
        {
            if (unit == AngleUnit.DEGREES)
            {
                return 360.0f;
            }

            if (unit == AngleUnit.TURNS)
            {
                return 1.0f;
            }

            return RadianFP32.TWO_PI;
        }
    
        public static float GetHalfCircle(AngleUnit unit)
        {
            if (unit == AngleUnit.DEGREES)
            {
                return 180.0f;
            }

            if (unit == AngleUnit.TURNS)
            {
                return 0.5f;
            }

            return RadianFP32.PI;
        }
    
        public static float GetQuarterCircle(AngleUnit unit)
        {
            if (unit == AngleUnit.DEGREES)
            {
                return 90.0f;
            }

            if (unit == AngleUnit.TURNS)
            {
                return 0.25f;
            }

            return RadianFP32.HALF_OF_PI;
        }

        public static float Normalize(float angle, AngleUnit unit, AngleRange range)
        {
            if (unit == AngleUnit.DEGREES)
            {
                return DegreeFP32.Normalize(angle, range);
            }

            if (unit == AngleUnit.TURNS)
            {
                return TurnFP32.Normalize(angle, range);
            }

            return RadianFP32.Normalize(angle, range);
        }
    }
}