#include <b2WorldCallbacks.h>
Callback class for ray casts. See b2World::RayCast
| virtual float32 b2RayCastCallback::ReportFixture |
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b2Fixture * |
fixture, |
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const b2Vec2 & |
point, |
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const b2Vec2 & |
normal, |
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float32 |
fraction |
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) |
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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
- Parameters
-
| fixture | the fixture hit by the ray |
| point | the point of initial intersection |
| normal | the normal vector at the point of intersection |
- Returns
- -1 to filter, 0 to terminate, fraction to clip the ray for closest hit, 1 to continue
| virtual float32 b2RayCastCallback::ReportParticle |
( |
const b2ParticleSystem * |
particleSystem, |
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int32 |
index, |
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const b2Vec2 & |
point, |
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const b2Vec2 & |
normal, |
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float32 |
fraction |
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) |
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inlinevirtual |
Called for each particle found in the query. You control how the ray cast proceeds by returning a float: return <=0: ignore the remaining particles in this particle system return fraction: ignore particles that are 'fraction' percent farther along the line from 'point1' to 'point2'. Note that 'point1' and 'point2' are parameters to b2World::RayCast.
- Parameters
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| particleSystem | the particle system containing the particle |
| index | the index of the particle in particleSystem |
| point | the point of intersection bt the ray and the particle |
| normal | the normal vector at the point of intersection |
| fraction | percent (0.0~1.0) from 'point0' to 'point1' along the ray. Note that 'point1' and 'point2' are parameters to b2World::RayCast. |
- Returns
- <=0 to ignore rest of particle system, fraction to ignore particles that are farther away.
| virtual bool b2RayCastCallback::ShouldQueryParticleSystem |
( |
const b2ParticleSystem * |
particleSystem | ) |
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inlinevirtual |
Cull an entire particle system from b2World::RayCast. Ignored in b2ParticleSystem::RayCast.
- Returns
- true if you want to include particleSystem in the RayCast, or false to cull particleSystem from the RayCast.
The documentation for this class was generated from the following file:
