Function mat4::look_at

pub fn look_at<'out, T>(
    out: &'out mut [T; 16], 
    eye: &[T; 3], 
    target: &[T; 3], 
    up: &[T; 3]
) -> &'out mut [T; 16] where
    T: Clone + Zero + One + Float + Add<T, Output = T> + Sub<T, Output = T>,
    &'a T: Mul<&'b T, Output = T> + Div<&'b T, Output = T> + Add<&'b T, Output = T> + Sub<&'b T, Output = T>, 

Example

let mut m = mat4::new_identity::<f32>();
mat4::look_at(&mut m, &[0_f32, 0_f32, 1_f32], &[0_f32, 0_f32, 0_f32], &[0_f32, 0_f32, 1_f32]);
assert_eq!(m, [
    0_f32, 0_f32, 0_f32, 0_f32,
    0_f32, 0_f32, 0_f32, 0_f32,
    0_f32, 0_f32, 1_f32, 0_f32,
    0_f32, 0_f32, -1_f32, 1_f32
]);