Streaming terrain with bullet

[razer]

I wish to have "infinite" height field terrain generated by math function.
What is best way to do that with bullet.

Thanks

[Erwin Coumans]

The best way is to create a custom shape derived from btConcaveShape and implement the 'processAllTriangles' method (generating several temporarily triangles on-the-fly that overlap with a given AABB).

See also btHeightfieldTerrainShape for an example (there are some other virtual methods that need some implementation).
Thanks,
Erwin