//-----------------------------------------------------------------------
// -----------------------------------------------------------------------
// file="Angle"
// Project: StgSharp
// AuthorGroup: Nitload
// Copyright (c) Nitload. All rights reserved.
//     
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
//     
// -----------------------------------------------------------------------
// -----------------------------------------------------------------------
using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.CompilerServices;
using System.Text;
using System.Threading.Tasks;

namespace StgSharp.Mathematics
{
    public static partial class GeometryScaler
    {

        internal const float DegToRad = 180 / MathF.PI;

        [MethodImpl(MethodImplOptions.AggressiveInlining)]
        public static float Cos(
                            Radius r
        )
        {
            return MathF.Cos(r._radius);
        }

        [MethodImpl(MethodImplOptions.AggressiveInlining)]
        public static float Cos(
                            Degree r
        )
        {
            return MathF.Cos(r._degree / DegToRad);
        }

        [MethodImpl(MethodImplOptions.AggressiveInlining)]
        public static float Sin(
                            Radius r
        )
        {
            return MathF.Sin(r._radius);
        }

        [MethodImpl(MethodImplOptions.AggressiveInlining)]
        public static float Sin(
                            Degree r
        )
        {
            return MathF.Sin(r._degree / DegToRad);
        }

        [MethodImpl(MethodImplOptions.AggressiveInlining)]
        public static float Tan(
                            Radius r
        )
        {
            return MathF.Tan(r._radius);
        }

        [MethodImpl(MethodImplOptions.AggressiveInlining)]
        public static float Tan(
                            Degree r
        )
        {
            return MathF.Tan(r._degree / DegToRad);
        }

        [MethodImpl(MethodImplOptions.AggressiveInlining)]
        public static Degree ToDegree(
                             float value
        )
        {
            return new Degree(value);
        }

    }

    public struct Degree
    {

        internal float _degree;

        public Degree(
               float dgree
        )
        {
            _degree = dgree;
        }

        public static implicit operator Radius(
                                        Degree d
        )
        {
            return new Radius(d._degree / GeometryScaler.DegToRad);
        }

    }

    public struct Radius
    {

        internal float _radius;

        [Obsolete("Unsafe, you may forget this is radius.", true)]
        public Radius() { }

        public Radius(
               float radius
        )
        {
            _radius = radius;
        }

        public static Radius Zero
        {
            get => new Radius(0);
        }

        [MethodImpl(MethodImplOptions.AggressiveInlining)]
        public static Radius operator -(
                                      Radius r
        )
        {
            return new Radius(-r._radius);
        }

        [MethodImpl(MethodImplOptions.AggressiveInlining)]
        public static Radius operator -(
                                      Radius left,
                                      Radius Right
        )
        {
            return new Radius(left._radius - Right._radius);
        }

        [MethodImpl(MethodImplOptions.AggressiveInlining)]
        public static bool operator !=(
                                    Radius left,
                                    Radius right
        )
        {
            return left._radius != right._radius;
        }

        [MethodImpl(MethodImplOptions.AggressiveInlining)]
        public static Radius operator *(
                                      Radius left,
                                      float right
        )
        {
            return new Radius(left._radius * right);
        }

        [MethodImpl(MethodImplOptions.AggressiveInlining)]
        public static Radius operator /(
                                      Radius left,
                                      float right
        )
        {
            return new Radius(left._radius / right);
        }

        [MethodImpl(MethodImplOptions.AggressiveInlining)]
        public static float operator /(
                                     Radius left,
                                     Radius right
        )
        {
            return left._radius / right._radius;
        }

        [MethodImpl(MethodImplOptions.AggressiveInlining)]
        public static Radius operator +(
                                      Radius left,
                                      Radius Right
        )
        {
            return new Radius(left._radius + Right._radius);
        }

        [MethodImpl(MethodImplOptions.AggressiveInlining)]
        public static bool operator ==(
                                    Radius left,
                                    Radius right
        )
        {
            return left._radius == right._radius;
        }

        public static implicit operator Degree(
                                        Radius r
        )
        {
            return new Degree(r._radius * 180 / MathF.PI);
        }

    }
}