OpenGL Billboarding Tutorial
http://www.lighthouse3d.com/opengl/billboarding/
Billboarding
http://dis.dankook.ac.kr/lectures/cg09/entry/OPENGL-Billboarding
Before Billboarding
![사용자 삽입 이미지](http://dis.dankook.ac.kr/lectures/cg11/attach/1/5891110594.png)
After Billboarding
![사용자 삽입 이미지](http://dis.dankook.ac.kr/lectures/cg11/attach/1/5706047133.png)
OpenGL Billboarding Tutorial
http://www.lighthouse3d.com/opengl/billboarding/
Billboarding
http://dis.dankook.ac.kr/lectures/cg09/entry/OPENGL-Billboarding
Before Billboarding