From d999e8196bb49454fb06d4d7b6ab342162913cb5 Mon Sep 17 00:00:00 2001
From: Bill Thiede <git@xinu.tv>
Date: Wed, 21 Jul 2021 15:15:59 -0700
Subject: [PATCH] eoc9: add ceiling.

---
 rtchallenge/examples/eoc9.rs | 17 ++++++++++++-----
 1 file changed, 12 insertions(+), 5 deletions(-)

diff --git a/rtchallenge/examples/eoc9.rs b/rtchallenge/examples/eoc9.rs
index 553c07e..e767a54 100644
--- a/rtchallenge/examples/eoc9.rs
+++ b/rtchallenge/examples/eoc9.rs
@@ -34,13 +34,13 @@ fn main() -> Result<()> {
     let width = 2560;
     let height = 1440;
 
-    let light_position = Tuple::point(-10., 10., -10.);
+    let light_position = Tuple::point(-5., 5., -5.);
     let light_color = WHITE;
     let light1 = PointLight::new(light_position, light_color);
-    let light_position = Tuple::point(10., 10., -10.);
+    let light_position = Tuple::point(5., 5., -5.);
     let light_color = Color::new(0.2, 0.2, 0.6);
     let light2 = PointLight::new(light_position, light_color);
-    let light_position = Tuple::point(0., 2., -10.);
+    let light_position = Tuple::point(0., 2., -5.);
     let light_color = Color::new(0.2, 0.2, 0.1);
     let light3 = PointLight::new(light_position, light_color);
 
@@ -58,9 +58,16 @@ fn main() -> Result<()> {
         specular: 0.,
         ..Material::default()
     };
+    let mut ceiling = Shape::plane();
+    ceiling.set_transform(Matrix4x4::translation(0., 6., 0.) * Matrix4x4::rotation_x(PI));
+    ceiling.material = Material {
+        color: Color::new(0.6, 0.6, 0.8),
+        specular: 0.2,
+        ..Material::default()
+    };
 
     let mut middle = Shape::sphere();
-    middle.set_transform(Matrix4x4::translation(-0.5, 1., 0.5));
+    middle.set_transform(Matrix4x4::translation(-0.5, 0.5, 0.5));
     middle.material = Material {
         color: Color::new(0.1, 1., 0.5),
         diffuse: 0.7,
@@ -90,7 +97,7 @@ fn main() -> Result<()> {
 
     let mut world = World::default();
     world.lights = vec![light1, light2, light3];
-    world.objects = vec![floor, middle, right, left];
+    world.objects = vec![floor, ceiling, middle, right, left];
 
     let image = camera.render(&world);