Fast dynamic polymesh generation?

[pHySiQuE]

Is there any fast-track method of generating a polymesh collision in Newton, specifically for build Minecraft-like worlds? My users report the collision tree generation is not fast enough to do without running it on a separate thread.

[Julio Jerez]

what is a polymesh?

collision trees are not good for that, however user collision is.
The terrain use the uses the user collision.

you just pass the faces that interest the aabb in a call back.