[ODE] How to use category bits?

Roland Kindermann iyo at gmx.de
Sat Sep 16 05:28:02 MST 2006

geoms collide if collide_bits & category_bits != 0 (bitwise and).
Geoms with collide bits 0xFFFFFFFF colide with every geom with category 
bits != 0.

michael kapelko schrieb:
> I defined ray's category bits. And collide bits define with which geoms 
> this geom will collide. As I see, default bits are 0xFFFFFF or smth. So 
> ray has 0xFFFFFF collide bits, 0x000002 category bits, therefore it 
> can't (shouldn't) collide with 0x000001 which is of capsule. 0xFFFFFF != 
> 0x000001, is it? Or am I misunderstanding smth?
> BTW, what does "~" mean in "~2"?
> Thanks.
> _______________________________________________
> ODE mailing list
> ODE at q12.org
> http://q12.org/mailman/listinfo/ode

More information about the ODE mailing list