Function normalize3

native/shared/src/shadows.rs:540–547

(v: [f32; 3])

}

fn normalize3(v: [f32; 3]) -> [f32; 3] {
    let len = (v[0] * v[0] + v[1] * v[1] + v[2] * v[2]).sqrt();
    if len > 1e-6 {
        [v[0] / len, v[1] / len, v[2] / len]
    } else {
        [0.0, 0.0, 1.0]
    }
}

fn dot3(a: [f32; 3], b: [f32; 3]) -> f32 {
    a[0] * b[0] + a[1] * b[1] + a[2] * b[2]