From 3549acb5dbd2f6fe43be6cce9828785ccead7e77 Mon Sep 17 00:00:00 2001
From: Nat Lasseter <user@4574.co.uk>
Date: Fri, 14 Jun 2024 12:23:49 +0100
Subject: Finished! Good god performance nope.

---
 rtiaw | 65 +++++++++++++++++++++++++++++++++++++++++++++++++++++------------
 1 file changed, 53 insertions(+), 12 deletions(-)

(limited to 'rtiaw')

diff --git a/rtiaw b/rtiaw
index 234aa85..f8a6700 100755
--- a/rtiaw
+++ b/rtiaw
@@ -10,20 +10,61 @@ require 'hittable'
 require 'camera'
 require 'material'
 
-mat_ground = Lambertian.new(0.8, 0.8, 0.0)
-mat_centre = Lambertian.new(0.1, 0.2, 0.5)
-mat_left = Dielectric.new(1.5)
-mat_bubble = Dielectric.new(1 / 1.5)
-mat_right = Metal.new(0.8, 0.6, 0.2, 1.0)
+#mat_ground = Lambertian.new(Colour.new(0.8, 0.8, 0.0))
+#mat_centre = Lambertian.new(Colour.new(0.1, 0.2, 0.5))
+#mat_left = Dielectric.new(1.5)
+#mat_bubble = Dielectric.new(1 / 1.5)
+#mat_right = Metal.new(Colour.new(0.8, 0.6, 0.2), 1.0)
+#
+#world = Hittables.new
+#world << Sphere.new(Point.new( 0, -100.5,   -1), 100, mat_ground)
+#world << Sphere.new(Point.new( 0,      0, -1.2), 0.5, mat_centre)
+#world << Sphere.new(Point.new(-1,      0,   -1), 0.5, mat_left)
+#world << Sphere.new(Point.new(-1,      0,   -1), 0.4, mat_bubble)
+#world << Sphere.new(Point.new( 1,      0,   -1), 0.5, mat_right)
+#
+#camera = Camera.new(400, 16.0 / 9,
+#                    vfov: 20,
+#                    lookfrom: Point.new(-2,2,1),
+#                    defocus_angle: 10, focus_dist: 3.4)
+#camera.render(world)
 
 world = Hittables.new
-world << Sphere.new( 0, -100.5,   -1,    100,    mat_ground)
-world << Sphere.new( 0,      0, -1.2,    0.5,    mat_centre)
-world << Sphere.new(-1,      0,   -1,    0.5,    mat_left)
-world << Sphere.new(-1,      0,   -1,    0.4,    mat_bubble)
-world << Sphere.new( 1,      0,   -1,    0.5,    mat_right)
+
+mat_ground = Lambertian.new(Colour.new(0.5, 0.5, 0.5))
+world << Sphere.new(Point.new(0.0, -1000.0, 0.0), 1000.0, mat_ground)
+
+(-4...4).each do |a|
+  (-4...4).each do |b|
+    centre = Point.new(a + 0.9 * rand, 0.2, b + 0.9 * rand)
+    if (centre - Point.new(4, 0.2, 0)).mag > 0.9
+      s_mat = case rand
+      when 0...0.8
+        albedo = Colour.random * Colour.random
+        Lambertian.new(albedo)
+      when 0.8...0.95
+        albedo = Colour.random(min: 0.5, max: 1)
+        fuzz = rand(0...0.5)
+        Metal.new(albedo, fuzz)
+      else
+        Dielectric.new(1.5)
+      end
+      world << Sphere.new(centre, 0.2, s_mat)
+    end
+  end
+end
+
+mat1 = Dielectric.new(1.5)
+world << Sphere.new(Point.new(0.0, 1.0, 0.0), 1.0, mat1)
+mat2 = Lambertian.new(Colour.new(0.4, 0.2, 0.1))
+world << Sphere.new(Point.new(-4.0, 1.0, 0.0), 1.0, mat2)
+mat3 = Metal.new(Colour.new(0.7, 0.6, 0.5), 0.0)
+world << Sphere.new(Point.new(4.0, 1.0, 0.0), 1.0, mat3)
 
 camera = Camera.new(400, 16.0 / 9,
-                    vfov: 20,
-                    lookfrom: Point.new(-2,2,1))
+                    aliasing: 4, depth: 4,
+                    vfov: 20.0,
+                    lookfrom: Point.new(13.0, 2.0, 3.0),
+                    lookat: Point.new,
+                    defocus_angle: 0.6, focus_dist: 10.0)
 camera.render(world)
-- 
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