物理沙盒，C++课程大作业 / My 2D Physics Sandbox, a project for C++ course in ENPC.
Github: https://github.com/flm8620/RigidBody
Part of code is based on Box2D
How does it look like:
蓝线表示碰撞求解，红线表示力求解
Blue vectors indicate collision solver, red vectors indicates contact solver
