btBroadphaseInterface::rayTest specification

Motherbrain · **Joined:** Tue Sep 11, 2012 12:26 pm **Posts:** 1

I'm new to Bullet Physics and I'm trying to understand the following function:

Code:

virtual void btBroadphaseInterface::rayTest(
   const btVector3 & rayFrom,
   const btVector3 & rayTo,
   btBroadphaseRayCallback & rayCallback,
   const btVector3 & aabbMin = btVector3(0, 0, 0),
   const btVector3 & aabbMax = btVector3(0, 0, 0)
)

How are the last two parameters, aabbMin and aabbMax, used?

Erwin Coumans · **Posted:** Fri Sep 14, 2012 5:56 pm

The rayTest can optionally perform a swept AABB test (rather than just sweeping a point).
This can be useful to accelerate linearly swept volume queries, for example the btCollisionWorld::convexSweepTest uses this interface.

Note that most users don't need to worry about this internal interface, unless you (re) implement your own broadphase and you want to support swept queries.

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btBroadphaseInterface::rayTest specification

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