pub fn projection(coeff: f64) -> Matrix {
    let mut projection = Matrix::identity(4);
    projection.put(3, 2, coeff);
    projection
}
/// Create a perspective projection matrix.
Create a perspective projection matrix.
Create a perspective projection matrix .
pub fn projection(coeff: f64) -> Matrix {
    let mut projection = Matrix::identity(4);
    projection.put(3, 2, coeff);
    projection
}
pub fn projection ( coeff : f64 ) -> Matrix { let mut projection = Matrix :: identity ( 4 ) ; projection . put ( 3 , 2 , coeff ) ; projection }
Create a perspective projection matrix.
Create a perspective projection matrix .
coeff
f64