Function draw_poly 

pub fn draw_poly(
    _x_1: f32,
    _y_1: f32,
    _z_1: f32,
    _x_2: f32,
    _y_2: f32,
    _z_2: f32,
    _x_3: f32,
    _y_3: f32,
    _z_3: f32,
    _red: i32,
    _green: i32,
    _blue: i32,
    _alpha: i32,
)