Use openGL 3.3 with glew 1.13.0, glfw 3.1.2 by MinGw

before use, make sure you download models from:

• https://drive.google.com/file/d/0B1IQd6JMt7EwcnBNeDBHZkdsX0k
• https://drive.google.com/file/d/0B1IQd6JMt7Ewb2ZBMFNaMW1tN0U
• https://drive.google.com/file/d/0B1IQd6JMt7EwaU1PUGNFSzMtWUE

create a folder named "smoothing", put downloaded zips in and unzip them

for example, there should be a file's path like: /smoothing/ori/bunny.obj

Except description on the UI, the '='(as '+') and '-' button, which left to backspace can zoom in the camera