Function normalize3

tools/imposter-baker/src/render.rs:445–448

(v: [f32; 3])

// ────────────────────────────────────────────────────────────────────

fn normalize3(v: [f32; 3]) -> [f32; 3] {
    let l = (v[0] * v[0] + v[1] * v[1] + v[2] * v[2]).sqrt().max(1e-8);
    [v[0] / l, v[1] / l, v[2] / l]
}
fn cross(a: [f32; 3], b: [f32; 3]) -> [f32; 3] {
    [a[1] * b[2] - a[2] * b[1], a[2] * b[0] - a[0] * b[2], a[0] * b[1] - a[1] * b[0]]
}