// Copyright (c) Six Labors and contributors.
// Licensed under the Apache License, Version 2.0.

using System;
using System.Runtime.CompilerServices;

namespace SixLabors
{
    /// <summary>
    /// Utility class for common geometric functions.
    /// </summary>
    public static class GeometryUtilities
    {
        /// <summary>
        /// Converts a degree (360-periodic) angle to a radian (2*Pi-periodic) angle.
        /// </summary>
        /// <param name="degree">The angle in degrees.</param>
        /// <returns>
        /// The <see cref="float"/> representing the degree as radians.
        /// </returns>
        [MethodImpl(MethodImplOptions.AggressiveInlining)]
        public static float DegreeToRadian(float degree) => degree * (MathF.PI / 180F);

        /// <summary>
        /// Converts a radian (2*Pi-periodic) angle to a degree (360-periodic) angle.
        /// </summary>
        /// <param name="radian">The angle in radians.</param>
        /// <returns>
        /// The <see cref="float"/> representing the degree as radians.
        /// </returns>
        [MethodImpl(MethodImplOptions.AggressiveInlining)]
        public static float RadianToDegree(float radian) => radian / (MathF.PI / 180F);
    }
}