Function dot3

perro_source/core/perro_builtin_meshes/src/lib.rs:533–535

(a: [f32; 3], b: [f32; 3])

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

#[inline]
fn normalize3(v: [f32; 3]) -> [f32; 3] {