|  | Box2D
    2.3.0
    A 2D Physics Engine for Games | 
This holds contact filtering data. More...
#include <b2Fixture.h>
| Public Attributes | |
| uint16 | categoryBits | 
| The collision category bits. Normally you would just set one bit. | |
| uint16 | maskBits | 
| int16 | groupIndex | 
This holds contact filtering data.
| int16 b2Filter::groupIndex | 
Collision groups allow a certain group of objects to never collide (negative) or always collide (positive). Zero means no collision group. Non-zero group filtering always wins against the mask bits.
| uint16 b2Filter::maskBits | 
The collision mask bits. This states the categories that this shape would accept for collision.
 1.8.17
 1.8.17