stgsharp/源代码/StgSharp/Geometries/GeometryScaler/Angle.cs

//-----------------------------------------------------------------------
//-----------------------------------------------------------------------
//     file="Angle.cs"
//     Project: StgSharp
//     AuthorGroup: Nitload Space
//     Copyright (c) Nitload Space. 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, 
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//     
//-----------------------------------------------------------------------
//-----------------------------------------------------------------------
using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.CompilerServices;
using System.Text;
using System.Threading.Tasks;

namespace StgSharp.Math
{
    public static partial class GeometryScaler
    {

        internal const float DegToRad = 180 / Scaler.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;

        internal 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) / Scaler.Pi);
        }

    }
}