/*
 * Copyright 2019-2025 Andrey Pokidov <andrey.pokidov@gmail.com>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

using System;

/*
 * Author: Andrey Pokidov
 * Date: 1 Feb 2019
 */

namespace BasicGeometry
{
    public static class FP64Angle
    {
        public static double ToRadians(double angle, AngleUnit unit)
        {
            if (unit == AngleUnit.DEGREES)
            {
                return angle * FP64Degrees.RADIANS_IN_DEGREE;
            }

            if (unit == AngleUnit.TURNS)
            {
                return angle * FP64Radians.TWO_PI;
            }

            return angle;
        }

        public static double ToDegrees(double angle, AngleUnit unit)
        {
            if (unit == AngleUnit.RADIANS)
            {
                return angle * FP64Radians.DEGREES_IN_RADIAN;
            }

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

            return angle;
        }

        public static double ToTurns(double angle, AngleUnit unit)
        {
            if (unit == AngleUnit.RADIANS)
            {
                return angle * FP64Radians.TURNS_IN_RADIAN;
            }

            if (unit == AngleUnit.DEGREES)
            {
                return angle * FP64Degrees.TURNS_IN_DEGREE;
            }

            return angle;
        }

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

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

            return FP64Radians.TWO_PI;
        }
    
        public static double GetHalfCircle(AngleUnit unit)
        {
            if (unit == AngleUnit.DEGREES)
            {
                return 180.0;
            }

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

            return FP64Radians.PI;
        }
    
        public static double GetQuarterCircle(AngleUnit unit)
        {
            if (unit == AngleUnit.DEGREES)
            {
                return 90.0;
            }

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

            return FP64Radians.HALF_OF_PI;
        }

        public static double Normalize(double angle, AngleUnit unit, AngleRange range)
        {
            if (unit == AngleUnit.DEGREES)
            {
                return FP64Degrees.Normalize(angle, range);
            }

            if (unit == AngleUnit.TURNS)
            {
                return FP64Turns.Normalize(angle, range);
            }

            return FP64Radians.Normalize(angle, range);
        }
    }
}