Fix tests after recent refactor

rtchallenge/examples/eoc1.rs

@@ -1,4 +1,4 @@
-use rtchallenge::tuples::{point, vector, Tuple};
+use rtchallenge::tuples::Tuple;
 
 #[derive(Debug)]
 struct Environment {
@@ -18,12 +18,12 @@ fn tick(env: &Environment, proj: &Projectile) -> Projectile {
 }
 fn main() {
     let mut p = Projectile {
-        position: point(0., 1., 0.),
-        velocity: 4. * vector(1., 1., 0.).normalize(),
+        position: Tuple::point(0., 1., 0.),
+        velocity: 4. * Tuple::vector(1., 1., 0.).normalize(),
     };
     let e = Environment {
-        gravity: vector(0., -0.1, 0.).normalize(),
-        wind: vector(-0.01, 0., 0.),
+        gravity: Tuple::vector(0., -0.1, 0.).normalize(),
+        wind: Tuple::vector(-0.01, 0., 0.),
     };
 
     let mut i = 0;