From 5d8024a485e707799a660766fe0ff64a5f8a0402 Mon Sep 17 00:00:00 2001
From: Bill Thiede <git@xinu.tv>
Date: Sun, 18 Jul 2021 17:29:30 -0700
Subject: [PATCH] features: rename s/_/-/g and make double sizes Floats
 default.

---
 rtchallenge/Cargo.toml     | 3 ++-
 rtchallenge/src/camera.rs  | 4 ++--
 rtchallenge/src/spheres.rs | 4 ++--
 3 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/rtchallenge/Cargo.toml b/rtchallenge/Cargo.toml
index bf830f2..2c03228 100644
--- a/rtchallenge/Cargo.toml
+++ b/rtchallenge/Cargo.toml
@@ -7,7 +7,8 @@ edition = "2018"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [features]
-disable_inverse_cache = []
+default = [ "float-as-double" ]
+disable-inverse-cache = []
 float-as-double = []
 
 [dependencies]
diff --git a/rtchallenge/src/camera.rs b/rtchallenge/src/camera.rs
index a2c6453..ddb137f 100644
--- a/rtchallenge/src/camera.rs
+++ b/rtchallenge/src/camera.rs
@@ -172,7 +172,7 @@ impl Camera {
     ///     Tuple::vector((2. as Float).sqrt() / 2., 0., -(2. as Float).sqrt() / 2.)
     /// );
     /// ```
-    #[cfg(not(feature = "disable_inverse_cache"))]
+    #[cfg(not(feature = "disable-inverse-cache"))]
     pub fn ray_for_pixel(&self, px: usize, py: usize) -> Ray {
         // The offset from the edge of the canvas to the pixel's corner.
         let xoffset = (px as Float + 0.5) * self.pixel_size;
@@ -192,7 +192,7 @@ impl Camera {
 
         Ray::new(origin, direction)
     }
-    #[cfg(feature = "disable_inverse_cache")]
+    #[cfg(feature = "disable-inverse-cache")]
     pub fn ray_for_pixel(&self, px: usize, py: usize) -> Ray {
         // The offset from the edge of the canvas to the pixel's corner.
         let xoffset = (px as Float + 0.5) * self.pixel_size;
diff --git a/rtchallenge/src/spheres.rs b/rtchallenge/src/spheres.rs
index cf88ffa..4d45558 100644
--- a/rtchallenge/src/spheres.rs
+++ b/rtchallenge/src/spheres.rs
@@ -105,7 +105,7 @@ impl Sphere {
     /// let n = s.normal_at(Tuple::point(0., (2. as Float).sqrt()/2., -(2. as Float).sqrt()/2.));
     /// assert_eq!(n, Tuple::vector(0., 0.97014, -0.24254));
     /// ```
-    #[cfg(not(feature = "disable_inverse_cache"))]
+    #[cfg(not(feature = "disable-inverse-cache"))]
     pub fn normal_at(&self, world_point: Tuple) -> Tuple {
         let object_point = self.inverse_transform * world_point;
         let object_normal = object_point - Tuple::point(0., 0., 0.);
@@ -113,7 +113,7 @@ impl Sphere {
         world_normal.w = 0.;
         world_normal.normalize()
     }
-    #[cfg(feature = "disable_inverse_cache")]
+    #[cfg(feature = "disable-inverse-cache")]
     pub fn normal_at(&self, world_point: Tuple) -> Tuple {
         let object_point = self.transform.inverse() * world_point;
         let object_normal = object_point - Tuple::point(0., 0., 0.);