SlaveMatrix-SDL/2DGAMELIB/_2DGAMELIB/Vector4D.cs

using System;
using System.Globalization;

namespace _2DGAMELIB
{
    [Serializable]
    public struct Vector4D
    {
    	public double X;

    	public double Y;

    	public double Z;

    	public double W;

    	public double this[int index]
    	{
    		get
    		{
    			return index switch
    			{
    				0 => X, 
    				1 => Y, 
    				2 => Z, 
    				3 => W, 
    				_ => throw new ArgumentOutOfRangeException("index", "Indices for Vector4D run from 0 to 3, inclusive."), 
    			};
    		}
    		set
    		{
    			switch (index)
    			{
    			case 0:
    				X = value;
    				break;
    			case 1:
    				Y = value;
    				break;
    			case 2:
    				Z = value;
    				break;
    			case 3:
    				W = value;
    				break;
    			default:
    				throw new ArgumentOutOfRangeException("index", "Indices for Vector4D run from 0 to 3, inclusive.");
    			}
    		}
    	}

    	public Vector4D(double value)
    	{
    		X = value;
    		Y = value;
    		Z = value;
    		W = value;
    	}

    	public Vector4D(Vector2D value, double z, double w)
    	{
    		X = value.X;
    		Y = value.Y;
    		Z = z;
    		W = w;
    	}

    	public Vector4D(ref Vector2D value, double z, double w)
    	{
    		X = value.X;
    		Y = value.Y;
    		Z = z;
    		W = w;
    	}

    	public Vector4D(Vector3D value, double w)
    	{
    		X = value.X;
    		Y = value.Y;
    		Z = value.Z;
    		W = w;
    	}

    	public Vector4D(ref Vector3D value, double w)
    	{
    		X = value.X;
    		Y = value.Y;
    		Z = value.Z;
    		W = w;
    	}

    	public Vector4D(double x, double y, double z, double w)
    	{
    		X = x;
    		Y = y;
    		Z = z;
    		W = w;
    	}

    	public double Length()
    	{
    		return System.Math.Sqrt(X * X + Y * Y + Z * Z + W * W);
    	}

    	public double LengthSquared()
    	{
    		return X * X + Y * Y + Z * Z + W * W;
    	}

    	public void Normalize()
    	{
    		double num = Length();
    		if (num != 0.0)
    		{
    			double num2 = 1.0 / num;
    			X *= num2;
    			Y *= num2;
    			Z *= num2;
    			W *= num2;
    		}
    	}

    	public static Vector4D operator +(Vector4D left, Vector4D right)
    	{
    		return new Vector4D(left.X + right.X, left.Y + right.Y, left.Z + right.Z, left.W + right.W);
    	}

    	public static Vector4D operator -(Vector4D left, Vector4D right)
    	{
    		return new Vector4D(left.X - right.X, left.Y - right.Y, left.Z - right.Z, left.W - right.W);
    	}

    	public static Vector4D operator -(Vector4D value)
    	{
    		return new Vector4D(0.0 - value.X, 0.0 - value.Y, 0.0 - value.Z, 0.0 - value.W);
    	}

    	public static Vector4D operator *(Vector4D value, double scale)
    	{
    		return new Vector4D(value.X * scale, value.Y * scale, value.Z * scale, value.W * scale);
    	}

    	public static Vector4D operator *(double scale, Vector4D value)
    	{
    		return new Vector4D(value.X * scale, value.Y * scale, value.Z * scale, value.W * scale);
    	}

    	public static Vector4D operator /(Vector4D value, double scale)
    	{
    		return new Vector4D(value.X / scale, value.Y / scale, value.Z / scale, value.W / scale);
    	}

    	public static bool operator ==(Vector4D left, Vector4D right)
    	{
    		if (left.X == right.X && left.Y == right.Y && left.Z == right.Z)
    		{
    			return left.W == right.W;
    		}
    		return false;
    	}

    	public static bool operator !=(Vector4D left, Vector4D right)
    	{
    		if (left.X == right.X && left.Y == right.Y && left.Z == right.Z)
    		{
    			return left.W != right.W;
    		}
    		return true;
    	}

    	public override string ToString()
    	{
    		return string.Format(CultureInfo.CurrentCulture, "X:{0} Y:{1} Z:{2} W:{3}", X.ToString(CultureInfo.CurrentCulture), Y.ToString(CultureInfo.CurrentCulture), Z.ToString(CultureInfo.CurrentCulture), W.ToString(CultureInfo.CurrentCulture));
    	}

    	public override int GetHashCode()
    	{
    		return X.GetHashCode() + Y.GetHashCode() + Z.GetHashCode() + W.GetHashCode();
    	}

    	public override bool Equals(object value)
    	{
    		if (value == null)
    		{
    			return false;
    		}
    		if (value.GetType() != GetType())
    		{
    			return false;
    		}
    		return Equals((Vector4D)value);
    	}

    	public bool Equals(Vector4D value)
    	{
    		if (X == value.X && Y == value.Y && Z == value.Z)
    		{
    			return W == value.W;
    		}
    		return false;
    	}

    	public bool Equals(ref Vector4D value)
    	{
    		if (X == value.X && Y == value.Y && Z == value.Z)
    		{
    			return W == value.W;
    		}
    		return false;
    	}
    }
}