Function look_to_affine3 

pub fn look_to_affine3(eye: Vec3, dir: Vec3, up: Vec3) -> Affine3

Returns an Affine3 view transform from eye, forward direction, and up.

Transforms left-handed world space points into left-handed Y-up view space.

Panics

Will panic if dir or up are not normalized when glam_assert is enabled.