feat - Add Lambertian material

1 files changed, 16 insertions, 0 deletions

diff --git a/material.go b/material.go
new file mode 100644
index 0000000..db1e4d6
--- /dev/null
+++ b/material.go
@@ -0,0 +1,16 @@
+package main
+
+type Material interface {
+	Scatter(ray Ray, hit HitRecord) (Ray, Color)
+}
+
+type Lambertian struct {
+	albedo Color
+}
+
+func (lambertian Lambertian) Scatter(ray Ray, hit HitRecord) (Ray, Color) {
+	// TODO: Use the correct distribution
+	direction := AddVec3D(hit.normal, RandomInUnitSphere())
+	scattered := Ray{hit.point, direction}
+	return scattered, lambertian.albedo
+}