From 8730659596dbfdb9625c0fc413625b261f7d6d70 Mon Sep 17 00:00:00 2001
From: Martin Lehoux <martin@lehoux.net>
Date: Sat, 4 Apr 2020 19:55:48 -0700
Subject: feat - Add Metal material

---
 material.go | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'material.go')

diff --git a/material.go b/material.go
index db1e4d6..a36fb52 100644
--- a/material.go
+++ b/material.go
@@ -14,3 +14,14 @@ func (lambertian Lambertian) Scatter(ray Ray, hit HitRecord) (Ray, Color) {
 	scattered := Ray{hit.point, direction}
 	return scattered, lambertian.albedo
 }
+
+type Metal struct {
+	albedo Color
+	fuzz   float64
+}
+
+func (metal Metal) Scatter(ray Ray, hit HitRecord) (Ray, Color) {
+	reflected := AddVec3D(ray.direction.Unit().Reflect(hit.normal), ScalarProduct(metal.fuzz, RandomInUnitSphere()))
+	scattered := Ray{hit.point, reflected}
+	return scattered, metal.albedo
+}
-- 
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