Function look_to_mat4 

pub fn look_to_mat4(eye: DVec3, dir: DVec3, up: DVec3) -> DMat4

Returns a DMat4 view matrix 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.