From d248e30d365d5e401d5cd372aa415fb2f9a39326 Mon Sep 17 00:00:00 2001
From: Nat Lasseter <user@4574.co.uk>
Date: Mon, 24 Jun 2024 22:12:44 +0100
Subject: Chapter 10

---
 hittable.go | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'hittable.go')

diff --git a/hittable.go b/hittable.go
index 5ab11cc..42599ab 100644
--- a/hittable.go
+++ b/hittable.go
@@ -11,6 +11,7 @@ type HitRecord struct {
   P Vec3
   N Vec3
   T float64
+  Mat Material
 }
 
 func (rec *HitRecord) SetFaceNormal(r Ray, out_n Vec3) {
@@ -32,6 +33,7 @@ type Hittable interface {
 type Sphere struct {
   Origin Vec3
   Radius float64
+  Mat Material
 }
 
 func (s Sphere) Hit(r Ray, ray_t Interval) (rec HitRecord) {
@@ -58,6 +60,7 @@ func (s Sphere) Hit(r Ray, ray_t Interval) (rec HitRecord) {
   rec.P = r.At(rec.T);
   out_n := rec.P.Sub(s.Origin).Div(SplatVec3(s.Radius));
   rec.SetFaceNormal(r, out_n);
+  rec.Mat = s.Mat;
   rec.Valid = true;
   return;
 }
-- 
cgit v1.2.1