using System;
using System.Collections.Generic;
using System.Text;

namespace StgSharp.Math
{
    public struct Array2x2
    {
        public Vec2D row0;
        public Vec2D row1;

        public Vec2D colum0;
        public Vec2D colum1;

        public Array2x2(Vec2D c0, Vec2D c1)
        {
            row0 = c0;
            row1 = c1;
            colum0 = new Vec2D(c0.X,c1.X);
            colum1 = new Vec2D(c0.Y,c1.Y);
        }

        public Array2x2(
            float a11,
            float a12,
            float a21,
            float a22
            )
        {
            row0 = new Vec2D(a11, a12);
            row1 = new Vec2D(a21, a22);

            colum0 = new Vec2D(a11, a21);
            colum1 = new Vec2D(a21, a22);
        }

        public static Array2x2 operator *(Array2x2 array1, Array2x2 array2)
        {
            return new Array2x2(
                array1.colum0 * array2.row0,
                array1.colum1 * array2.row0,
                array1.colum0 * array2.row1,
                array1.colum1 * array2.row1
                );
        }

        public static Array2x2 operator +(Array2x2 array1, Array2x2 array2)
        {
            return new Array2x2(
                array1.row0 + array2.row0,
                array1.row1 + array2.row1
                );
        }

        public static Array2x2 operator -(Array2x2 array1, Array2x2 array2)
        {
            return new Array2x2(
                array1.row0 - array2.row0,
                array1.row1 - array2.row1
                );
        }

        

    }
}