/*
 * Author: Andrey Pokidov
 * License: Apache-2.0
 * Date: 11 Nov 2024
 */

namespace BGC
{
    public class MatrixProductFP64
    {
        public static void Get2x2At2x2(in Matrix2x2FP64 left, in Matrix2x2FP64 right, out Matrix2x2FP64 product)
        {
            double r1c1 = left.r1c1 * right.r1c1 + left.r1c2 * right.r2c1;
            double r1c2 = left.r1c1 * right.r1c2 + left.r1c2 * right.r2c2;

            double r2c1 = left.r2c1 * right.r1c1 + left.r2c2 * right.r2c1;
            double r2c2 = left.r2c1 * right.r1c2 + left.r2c2 * right.r2c2;

            product.r1c1 = r1c1;
            product.r1c2 = r1c2;

            product.r2c1 = r2c1;
            product.r2c2 = r2c2;
        }

        public static void Get2x2At3x2(in Matrix2x2FP64 left, in Matrix3x2FP64 right, out Matrix3x2FP64 product)
        {
            double r1c1 = left.r1c1 * right.r1c1 + left.r1c2 * right.r2c1;
            double r1c2 = left.r1c1 * right.r1c2 + left.r1c2 * right.r2c2;
            double r1c3 = left.r1c1 * right.r1c3 + left.r1c2 * right.r2c3;

            double r2c1 = left.r2c1 * right.r1c1 + left.r2c2 * right.r2c1;
            double r2c2 = left.r2c1 * right.r1c2 + left.r2c2 * right.r2c2;
            double r2c3 = left.r2c1 * right.r1c3 + left.r2c2 * right.r2c3;

            product.r1c1 = r1c1;
            product.r1c2 = r1c2;
            product.r1c3 = r1c3;

            product.r2c1 = r2c1;
            product.r2c2 = r2c2;
            product.r2c3 = r2c3;
        }
    
        public static void Get2x3At2x2(in Matrix2x3FP64 left, in Matrix2x2FP64 right, out Matrix2x3FP64 product)
        {
            double r1c1 = left.r1c1 * right.r1c1 + left.r1c2 * right.r2c1;
            double r1c2 = left.r1c1 * right.r1c2 + left.r1c2 * right.r2c2;
        
            double r2c1 = left.r2c1 * right.r1c1 + left.r2c2 * right.r2c1;
            double r2c2 = left.r2c1 * right.r1c2 + left.r2c2 * right.r2c2;
        
            double r3c1 = left.r3c1 * right.r1c1 + left.r3c2 * right.r2c1;
            double r3c2 = left.r3c1 * right.r1c2 + left.r3c2 * right.r2c2;
        
            product.r1c1 = r1c1;
            product.r1c2 = r1c2;
        
            product.r2c1 = r2c1;
            product.r2c2 = r2c2;
        
            product.r3c1 = r3c1;
            product.r3c2 = r3c2;
        }

        public static void Get2x3At3x2(in Matrix2x3FP64 left, in Matrix3x2FP64 right, out Matrix3x3FP64 product)
        {
            product.r1c1 = left.r1c1 * right.r1c1 + left.r1c2 * right.r2c1;
            product.r1c2 = left.r1c1 * right.r1c2 + left.r1c2 * right.r2c2;
            product.r1c3 = left.r1c1 * right.r1c3 + left.r1c2 * right.r2c3;
        
            product.r2c1 = left.r2c1 * right.r1c1 + left.r2c2 * right.r2c1;
            product.r2c2 = left.r2c1 * right.r1c2 + left.r2c2 * right.r2c2;
            product.r2c3 = left.r2c1 * right.r1c3 + left.r2c2 * right.r2c3;
        
            product.r3c1 = left.r3c1 * right.r1c1 + left.r3c2 * right.r2c1;
            product.r3c2 = left.r3c1 * right.r1c2 + left.r3c2 * right.r2c2;
            product.r3c3 = left.r3c1 * right.r1c2 + left.r3c2 * right.r2c3;
        }

        public static void Get3x2At3x3(in Matrix3x2FP64 left, in Matrix3x3FP64 right, out Matrix3x2FP64 product)
        {
            double r1c1 = left.r1c1 * right.r1c1 + left.r1c2 * right.r2c1 + left.r1c3 * right.r3c1;
            double r1c2 = left.r1c1 * right.r1c2 + left.r1c2 * right.r2c2 + left.r1c3 * right.r3c2;
            double r1c3 = left.r1c1 * right.r1c3 + left.r1c2 * right.r2c3 + left.r1c3 * right.r3c3;

            double r2c1 = left.r2c1 * right.r1c1 + left.r2c2 * right.r2c1 + left.r2c3 * right.r3c1;
            double r2c2 = left.r2c1 * right.r1c2 + left.r2c2 * right.r2c2 + left.r2c3 * right.r3c2;
            double r2c3 = left.r2c1 * right.r1c3 + left.r2c2 * right.r2c3 + left.r2c3 * right.r3c3;

            product.r1c1 = r1c1;
            product.r1c2 = r1c2;
            product.r1c3 = r1c3;

            product.r2c1 = r2c1;
            product.r2c2 = r2c2;
            product.r2c3 = r2c3;
        }

        public static void Get3x2At2x3(in Matrix3x2FP64 left, in Matrix2x3FP64 right, out Matrix2x2FP64 product)
        {
            product.r1c1 = left.r1c1 * right.r1c1 + left.r1c2 * right.r2c1 + left.r1c3 * right.r3c1;
            product.r1c2 = left.r1c1 * right.r1c2 + left.r1c2 * right.r2c2 + left.r1c3 * right.r3c2;

            product.r2c1 = left.r2c1 * right.r1c1 + left.r2c2 * right.r2c1 + left.r2c3 * right.r3c1;
            product.r2c2 = left.r2c1 * right.r1c2 + left.r2c2 * right.r2c2 + left.r2c3 * right.r3c2;
        }

        public static void Get3x3At2x3(in Matrix3x3FP64 left, in Matrix2x3FP64 right, out Matrix2x3FP64 product)
        {
            double r1c1 = left.r1c1 * right.r1c1 + left.r1c2 * right.r2c1 + left.r1c3 * right.r3c1;
            double r1c2 = left.r1c1 * right.r1c2 + left.r1c2 * right.r2c2 + left.r1c3 * right.r3c2;

            double r2c1 = left.r2c1 * right.r1c1 + left.r2c2 * right.r2c1 + left.r2c3 * right.r3c1;
            double r2c2 = left.r2c1 * right.r1c2 + left.r2c2 * right.r2c2 + left.r2c3 * right.r3c2;

            double r3c1 = left.r3c1 * right.r1c1 + left.r3c2 * right.r2c1 + left.r3c3 * right.r3c1;
            double r3c2 = left.r3c1 * right.r1c2 + left.r3c2 * right.r2c2 + left.r3c3 * right.r3c2;

            product.r1c1 = r1c1;
            product.r1c2 = r1c2;

            product.r2c1 = r2c1;
            product.r2c2 = r2c2;

            product.r3c1 = r3c1;
            product.r3c2 = r3c2;
        }

        public static void Get3x3At3x3(in Matrix3x3FP64 left, in Matrix3x3FP64 right, out Matrix3x3FP64 product)
        {
            double r1c1 = left.r1c1 * right.r1c1 + left.r1c2 * right.r2c1 + left.r1c3 * right.r3c1;
            double r1c2 = left.r1c1 * right.r1c2 + left.r1c2 * right.r2c2 + left.r1c3 * right.r3c2;
            double r1c3 = left.r1c1 * right.r1c3 + left.r1c2 * right.r2c3 + left.r1c3 * right.r3c3;

            double r2c1 = left.r2c1 * right.r1c1 + left.r2c2 * right.r2c1 + left.r2c3 * right.r3c1;
            double r2c2 = left.r2c1 * right.r1c2 + left.r2c2 * right.r2c2 + left.r2c3 * right.r3c2;
            double r2c3 = left.r2c1 * right.r1c3 + left.r2c2 * right.r2c3 + left.r2c3 * right.r3c3;

            double r3c1 = left.r3c1 * right.r1c1 + left.r3c2 * right.r2c1 + left.r3c3 * right.r3c1;
            double r3c2 = left.r3c1 * right.r1c2 + left.r3c2 * right.r2c2 + left.r3c3 * right.r3c2;
            double r3c3 = left.r3c1 * right.r1c3 + left.r3c2 * right.r2c3 + left.r3c3 * right.r3c3;

            product.r1c1 = r1c1;
            product.r1c2 = r1c2;
            product.r1c3 = r1c3;

            product.r2c1 = r2c1;
            product.r2c2 = r2c2;
            product.r2c3 = r2c3;

            product.r3c1 = r3c1;
            product.r3c2 = r3c2;
            product.r3c3 = r3c3;
        }
    }
}