1.1 --- a/src/sphere.cc	Sun Nov 09 14:39:01 2014 +0200
     1.2 +++ b/src/sphere.cc	Sun Nov 09 20:13:33 2014 +0200
     1.3 @@ -1,3 +1,20 @@
     1.4 +/*
     1.5 +Simple introductory ray tracer
     1.6 +Copyright (C) 2012  John Tsiombikas <nuclear@member.fsf.org>
     1.7 +
     1.8 +This program is free software: you can redistribute it and/or modify
     1.9 +it under the terms of the GNU General Public License as published by
    1.10 +the Free Software Foundation, either version 3 of the License, or
    1.11 +(at your option) any later version.
    1.12 +
    1.13 +This program is distributed in the hope that it will be useful,
    1.14 +but WITHOUT ANY WARRANTY; without even the implied warranty of
    1.15 +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    1.16 +GNU General Public License for more details.
    1.17 +
    1.18 +You should have received a copy of the GNU General Public License
    1.19 +along with this program.  If not, see <http://www.gnu.org/licenses/>.
    1.20 +*/
    1.21  #include <stdio.h>
    1.22  #include "sphere.h"
    1.23