embedded_libs/box2d-2.4.1/docs/testbed.md

# Testbed Once you have conquered the HelloWorld example, you should start looking at Box2D's testbed. The testbed is a testing framework and demo environment. Here are some of the features: - Camera with pan and zoom. - Mouse picking of shapes attached to dynamic bodies. - Extensible set of tests. - GUI for selecting tests, parameter tuning, and debug drawing options. - Pause and single step simulation. - Text rendering.  The testbed has many examples of Box2D usage in the test cases and the framework itself. I encourage you to explore and tinker with the testbed as you learn Box2D. Note: the testbed is written using [GLFW](https://www.glfw.org) and [imgui](https://github.com/ocornut/imgui). The testbed is not part of the Box2D library. The Box2D library is agnostic about rendering. As shown by the HelloWorld example, you don't need a renderer to use Box2D.