Function quat::look_rotation

pub fn look_rotation<'out, T>(
    out: &'out mut [T; 4], 
    forward: &[T; 3], 
    up: &[T; 3]
) -> &'out mut [T; 4] where
    T: Real + FromPrimitive, 

Example

let mut q = quat::new_identity::<f32>();
quat::look_rotation(&mut q, &[0_f32, 1_f32, 0_f32], &[0_f32, 0_f32, 1_f32]);
assert_eq!(q, [-0.25_f32, 0_f32, 0_f32, 2_f32]);