mat2: nml::mat2& operator*=(const nml::mat2& other)

Multiply the current mat2 by a mat2.

The product between two mat2 is calculated this way:

\(\begin{bmatrix} x.x & y.x \\ x.y & y.y \end{bmatrix} * \begin{bmatrix} other.x.x & other.y.x \\ other.x.y & other.y.y \end{bmatrix} =\)

\(\begin{bmatrix} x.x * other.x.x + y.x * other.x.y & x.x * other.y.x + y.x * other.y.y \\ x.y * other.x.x + y.y * other.x.y & x.y * other.y.x + y.y * other.y.y \end{bmatrix}\)

Example

#include "include/mat2.h"
#include <iostream>

int main() {
        nml::mat2 a(1.0f, 2.0f, 3.0f, 4.0f);
        nml::mat2 b = nml::inverse(a);
        a *= b;
        std::cout << nml::to_string(a) << std::endl;

        return 0;
}

Result:

[[1.000000, 0.000000], [0.000000, 1.000000]]