Simpler version of Ray Tracing project.
We need freeglut.dll in the directory of the project. Also we need freeglut.lib and glut.h, we write paths to those files in Properties. C/C++, Linker -> Additional libraries ("Дополнительные каталоги библиотек")
x86
I don't understand piece of vec.h with 'operator[]' and 'assert(...)', so we don't use this piece of code.