Code cleanup
* Reduced the usage of #include “three.h” and using namespace std; Since most of my codes have become more modular, it’s no longer tedious to include individual headers, or to use only specific module of STL.
* Also added torus geometry and scratch pad .
Merge branch 'master' of https://github.com/subokita/Three.cpp-Rev-2
Code cleanup
* Reduced the usage of #include “three.h” and using namespace std; Since most of my codes have become more modular, it’s no longer tedious to include individual headers, or to use only specific module of STL.
* Also added torus geometry and scratch pad .