resolve dot,length
Merge branch 'master' of https://github.com/YumeYami/Realtime-Project
resolve
Conflicts:
	tutorial10_transparency/box3D/box3DcalculateForce.cpp
	tutorial10_transparency/box3D/box3Dcollision.cpp
	tutorial10_transparency/tutorial10.cpp
Merge branch 'master' of https://github.com/YumeYami/Realtime-Project

Conflicts:
	tutorial10_transparency/box3D/box3Dcollision.cpp
resolve conflict