Function get_camera_matrix2D 

pub fn get_camera_matrix2D(camera: impl Into<Camera2D>) -> Matrix

Returns camera 2D transform matrix (view matrix)

use raylib::prelude::*;
fn main() {
    let c = Camera2D::default();
    let m = get_camera_matrix2D(&c);
    let mut check = Matrix::zero();
    check.m10 = 1.0;
    check.m15 = 1.0;
    assert_eq!(m, check);
}