From 4936839723191510851312d8f9b21514afec9b35 Mon Sep 17 00:00:00 2001
From: Bill Thiede <git@xinu.tv>
Date: Thu, 22 Jul 2021 21:34:18 -0700
Subject: [PATCH] prelude: create prelude and add some tuple helpers to it.

---
 rtchallenge/src/lib.rs    |  4 ++++
 rtchallenge/src/tuples.rs | 26 ++++++++++++++++++++++++++
 2 files changed, 30 insertions(+)

diff --git a/rtchallenge/src/lib.rs b/rtchallenge/src/lib.rs
index d02e1b0..54fc30d 100644
--- a/rtchallenge/src/lib.rs
+++ b/rtchallenge/src/lib.rs
@@ -37,3 +37,7 @@ pub mod float {
 }
 
 pub use float::Float;
+
+pub mod prelude {
+    pub use crate::tuples::{point, vector, Color};
+}
diff --git a/rtchallenge/src/tuples.rs b/rtchallenge/src/tuples.rs
index 04f7f5f..ecd9848 100644
--- a/rtchallenge/src/tuples.rs
+++ b/rtchallenge/src/tuples.rs
@@ -2,6 +2,32 @@ use std::ops::{Add, Div, Mul, Neg, Sub};
 
 use crate::{Float, EPSILON};
 
+/// Short hand for creating a Tuple that represents a point, w=1.
+///
+/// # Examples
+/// ```
+/// use rtchallenge::tuples::{point, Tuple};
+///
+/// assert_eq!(point(1., 2., 3.), Tuple::point(1., 2., 3.));
+/// assert_eq!(point(1., 2., 3.), Tuple::new(1., 2., 3., 1.));
+/// ```
+pub fn point(x: Float, y: Float, z: Float) -> Tuple {
+    Tuple::point(x, y, z)
+}
+
+/// Short hand for creating a Tuple that represents a vector, w=0.
+///
+/// # Examples
+/// ```
+/// use rtchallenge::tuples::{vector, Tuple};
+///
+/// assert_eq!(vector(1., 2., 3.), Tuple::vector(1., 2., 3.));
+/// assert_eq!(vector(1., 2., 3.), Tuple::new(1., 2., 3., 0.));
+/// ```
+pub fn vector(x: Float, y: Float, z: Float) -> Tuple {
+    Tuple::vector(x, y, z)
+}
+
 #[derive(Debug, Default, Copy, Clone)]
 pub struct Tuple {
     pub x: Float,