| Box2D 2.4.1
    A 2D physics engine for games | 
#include <b2_world_callbacks.h>
| Public Member Functions | |
| virtual float | ReportFixture (b2Fixture *fixture, const b2Vec2 &point, const b2Vec2 &normal, float fraction)=0 | 
Callback class for ray casts. See b2World::RayCast
| 
 | pure virtual | 
Called for each fixture found in the query. You control how the ray cast proceeds by returning a float: return -1: ignore this fixture and continue return 0: terminate the ray cast return fraction: clip the ray to this point return 1: don't clip the ray and continue
| fixture | the fixture hit by the ray | 
| point | the point of initial intersection | 
| normal | the normal vector at the point of intersection | 
| fraction | the fraction along the ray at the point of intersection |