From 4014436905aace9acd47dde245b88bd5f69335ec Mon Sep 17 00:00:00 2001
From: Richard Qin <richard.qin.x@gmail.com>
Date: Mon, 9 Mar 2026 23:31:27 +0800
Subject: Sending Rays Into the Scene

---
 src/vec3.cc | 56 --------------------------------------------------------
 1 file changed, 56 deletions(-)

(limited to 'src/vec3.cc')

diff --git a/src/vec3.cc b/src/vec3.cc
index d01f90a..4332c56 100644
--- a/src/vec3.cc
+++ b/src/vec3.cc
@@ -74,59 +74,3 @@ double vec3::length_squared() const
 {
   return e[0] * e[0] + e[1] * e[1] + e[2] * e[2];
 }
-
-// point3 is just an alias for vec3, but useful for geometric clarity in the code.
-using point3 = vec3;
-
-// Vector Utility Functions
-
-inline std::ostream& operator<<( std::ostream& out, const vec3& v )
-{
-  return out << v.e[0] << ' ' << v.e[1] << ' ' << v.e[2];
-}
-
-inline vec3 operator+( const vec3& u, const vec3& v )
-{
-  return { u.e[0] + v.e[0], u.e[1] + v.e[1], u.e[2] + v.e[2] };
-}
-
-inline vec3 operator-( const vec3& u, const vec3& v )
-{
-  return { u.e[0] - v.e[0], u.e[1] - v.e[1], u.e[2] - v.e[2] };
-}
-
-inline vec3 operator*( const vec3& u, const vec3& v )
-{
-  return { u.e[0] * v.e[0], u.e[1] * v.e[1], u.e[2] * v.e[2] };
-}
-
-inline vec3 operator*( double t, const vec3& v )
-{
-  return { t * v.e[0], t * v.e[1], t * v.e[2] };
-}
-
-inline vec3 operator*( const vec3& v, double t )
-{
-  return t * v;
-}
-
-inline vec3 operator/( const vec3& v, double t )
-{
-  return ( 1 / t ) * v;
-}
-
-inline double dot( const vec3& u, const vec3& v )
-{
-  return u.e[0] * v.e[0] + u.e[1] * v.e[1] + u.e[2] * v.e[2];
-}
-
-inline vec3 cross( const vec3& u, const vec3& v )
-{
-  return {
-    u.e[1] * v.e[2] - u.e[2] * v.e[1], u.e[2] * v.e[0] - u.e[0] * v.e[2], u.e[0] * v.e[1] - u.e[1] * v.e[0] };
-}
-
-inline vec3 unit_vector( const vec3& v )
-{
-  return v / v.length();
-}
-- 
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