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.

---
 lib/vec3.rb | 27 +++++++++++++++------------
 1 file changed, 15 insertions(+), 12 deletions(-)

(limited to 'lib/vec3.rb')

diff --git a/lib/vec3.rb b/lib/vec3.rb
index 478fe4c..46d8ee1 100644
--- a/lib/vec3.rb
+++ b/lib/vec3.rb
@@ -1,8 +1,8 @@
 class Vec3
-  def initialize(x = 0, y = 0, z = 0)
-    @x = x.to_f
-    @y = y.to_f
-    @z = z.to_f
+  def initialize(x = 0.0, y = 0.0, z = 0.0)
+    @x = x
+    @y = y
+    @z = z
   end
 
   attr_reader :x, :y, :z
@@ -67,7 +67,7 @@ class Vec3
     rout_perp + rout_parr
   end
 
-  def in_unit_sphere?
+  def in_unit?
     mag_sqr < 1
   end
 
@@ -79,18 +79,21 @@ class Vec3
     "{#{@x}, #{@y}, #{@z}}"
   end
 
-  def self.random(min = 0, max = 1)
-    interval = Interval.new(min.to_f, max.to_f)
-    Vec3.new(interval.sample, interval.sample, interval.sample)
+  def self.random(min: -1.0, max: 1.0, dimensions: 3)
+    interval = Interval.new(min, max)
+    self.new(
+      dimensions >= 1 ? interval.sample : 0,
+      dimensions >= 2 ? interval.sample : 0,
+      dimensions >= 3 ? interval.sample : 0
+    )
   end
 
-  def self.random_unit(normal = nil)
+  def self.random_in_unit(normal: nil, dimensions: 3)
     p = nil
     while p.nil?
-      c = Vec3.random
-      p = c.unit if c.in_unit_sphere?
+      c = self.random(dimensions: dimensions)
+      p = c.unit if c.in_unit?
     end
-
     normal.nil? || p.dot(normal) > 0 ? p : -p
   end
 end
-- 
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