using System;
using System.Runtime.InteropServices;

namespace OpenCvSharp
{
    /// <summary>
    /// 
    /// </summary>
    [Serializable]
    [StructLayout(LayoutKind.Sequential)]
    public struct Size2f : IEquatable<Size2f>
    {
        /// <summary>
        /// 
        /// </summary>
        public float Width;

        /// <summary>
        /// 
        /// </summary>
        public float Height;

        /// <summary>
        /// 
        /// </summary>
        /// <param name="width"></param>
        /// <param name="height"></param>
        public Size2f(float width, float height)
        {
            Width = width;
            Height = height;
        }

        /// <summary>
        /// 
        /// </summary>
        /// <param name="width"></param>
        /// <param name="height"></param>
        public Size2f(double width, double height)
        {
            Width = (int) width;
            Height = (int) height;
        }

        #region Operators

#if LANG_JP
    /// <summary>
    /// 指定したオブジェクトと等しければtrueを返す 
    /// </summary>
    /// <param name="obj">比較するオブジェクト</param>
    /// <returns>型が同じで、メンバの値が等しければtrue</returns>
#else
        /// <summary>
        /// Specifies whether this object contains the same members as the specified Object.
        /// </summary>
        /// <param name="obj">The Object to test.</param>
        /// <returns>This method returns true if obj is the same type as this object and has the same members as this object.</returns>
#endif
        public bool Equals(Size2f obj)
        {
            return (Width == obj.Width && Height == obj.Height);
        }

#if LANG_JP
    /// <summary>
    /// == 演算子のオーバーロード
    /// </summary>
    /// <param name="lhs">左辺値</param>
    /// <param name="rhs">右辺値</param>
    /// <returns>等しければtrue</returns>
#else
        /// <summary>
        /// Compares two CvPoint objects. The result specifies whether the members of each object are equal.
        /// </summary>
        /// <param name="lhs">A Point to compare.</param>
        /// <param name="rhs">A Point to compare.</param>
        /// <returns>This operator returns true if the members of left and right are equal; otherwise, false.</returns>
#endif
        public static bool operator ==(Size2f lhs, Size2f rhs)
        {
            return lhs.Equals(rhs);
        }

#if LANG_JP
    /// <summary>
    /// != 演算子のオーバーロード
    /// </summary>
    /// <param name="lhs">左辺値</param>
    /// <param name="rhs">右辺値</param>
    /// <returns>等しくなければtrue</returns>
#else
        /// <summary>
        /// Compares two CvPoint objects. The result specifies whether the members of each object are unequal.
        /// </summary>
        /// <param name="lhs">A Point to compare.</param>
        /// <param name="rhs">A Point to compare.</param>
        /// <returns>This operator returns true if the members of left and right are unequal; otherwise, false.</returns>
#endif
        public static bool operator !=(Size2f lhs, Size2f rhs)
        {
            return !lhs.Equals(rhs);
        }

        #endregion

        #region Override

#if LANG_JP
    /// <summary>
    /// Equalsのオーバーライド
    /// </summary>
    /// <param name="obj">比較するオブジェクト</param>
    /// <returns></returns>
#else
        /// <summary>
        /// Specifies whether this object contains the same members as the specified Object.
        /// </summary>
        /// <param name="obj">The Object to test.</param>
        /// <returns>This method returns true if obj is the same type as this object and has the same members as this object.</returns>
#endif
        public override bool Equals(object obj)
        {
            return base.Equals(obj);
        }

#if LANG_JP
    /// <summary>
    /// GetHashCodeのオーバーライド
    /// </summary>
    /// <returns>このオブジェクトのハッシュ値を指定する整数値。</returns>
#else
        /// <summary>
        /// Returns a hash code for this object.
        /// </summary>
        /// <returns>An integer value that specifies a hash value for this object.</returns>
#endif
        public override int GetHashCode()
        {
            return Width.GetHashCode() ^ Height.GetHashCode();
        }

#if LANG_JP
    /// <summary>
    /// 文字列形式を返す 
    /// </summary>
    /// <returns>文字列形式</returns>
#else
        /// <summary>
        /// Converts this object to a human readable string.
        /// </summary>
        /// <returns>A string that represents this object.</returns>
#endif
        public override string ToString()
        {
            return string.Format("(width:{0} height:{1})", Width, Height);
        }

        #endregion
    }
}
