Function nalgebra_glm::faceforward

source · 
pub fn faceforward<T: Number, const D: usize>(
    n: &TVec<T, D>,
    i: &TVec<T, D>,
    nref: &TVec<T, D>
) -> TVec<T, D>
Expand description

If dot(nref, i) < 0.0, return n, otherwise, return -n.