Bill Thiede 7c213e3a2b Implement Lambertian and Metal materials.
Fixed bug with Vec3::unit_vector().
Had to remove old example programs because Sphere::new() API changed to
allow materials.
2018-09-09 17:01:52 -07:00
..
2018-09-08 17:32:12 -07:00

What?

Implementations of the concepts explored by Peter Shirley in "Ray Tracing in One Weekend"