| Name | Description |
|---|---|
| ContactFilter | Implement this class to provide collision filtering. In other words, you can implement this class if you want finer control over contact creation. |
| ContactImpulse | Contact impulses for reporting. Impulses are used instead of forces because sub-step forces may approach infinity for rigid body collisions. These match up one-to-one with the contact points in b2Manifold. |
| DebugDraw | Implement this abstract class to allow JBox2d to automatically draw your physics for debugging purposes. Not intended to replace your own custom rendering routines! |