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  3. FGenericParticlePairMidPhase

FGenericParticlePairMidPhase

A midphase for a particle pair where one or both have a large number of collisions shapes, or a non-flat hierarchy of shapes.

API > API/Runtime > API/Runtime/Chaos > API/Runtime/Chaos/Chaos > API/Runtime/Chaos/Chaos/Collision

Inheritance Hierarchy

References

   
Module Chaos
Header /Engine/Source/Runtime/Experimental/Chaos/Public/Chaos/Collision/ParticlePairMidPhase.h
Include #include "Chaos/Collision/ParticlePairMidPhase.h"

Syntax

class FGenericParticlePairMidPhase : public Chaos::FParticlePairMidPhase

Remarks

A midphase for a particle pair where one or both have a large number of collisions shapes, or a non-flat hierarchy of shapes. This is the general-purpose collision path and does not cache as much data as the FShapePairParticlePairMidPhase and must visit the geometry hierarchy on both shapes every time we detect collisions. It must also rerun the collision filters on overlapping pairs, among other things. It does, howver, take advantage of the BVH held in the root ImplicitObjectUnion if there is one, so it can be much faster the the FShapePairParticlePairMidPhase when the set of potentially colliding pairs is very large.

Constructors

  Type Name Description
Public function    

Destructors

  Type Name Description
Public function    

Functions

  Type Name Description
Public function void

WakeCollisionsImpl ( const int32 SleepEpoch,
const int32 CurrentEpoch
)

 Reactivate the constraint SleepEpoch The tick on which the particle went to sleep. Only constraints that were active when the particle went to sleep should be reactivated.

Overridden from FParticlePairMidPhase

  Type Name Description
Public function Virtual void Build the list of potentially colliding shape pairs. This is all the shape pairs in the partilces' shapes arrays that pass the collision filter.
Public function Virtual FPBDCollisionConstraint *

FindOrCreateConstraint ( FGeometryParticleHandle* InParticle0,
const FImplicitObject* InImplicit0,
const int32 InImplicitId0,
const FShapeInstance* InShape0,
const FBVHParticles* InBVHParticles0,
const FRigidTransform3& InShapeRelativeTransform0,
FGeometryParticleHandle* InParticle1,
const FImplicitObject* Implicit1,
const int32 InImplicitId1,
const FShapeInstance* InShape1,
const FBVHParticles* InBVHParticles1,
const FRigidTransform3& InhapeRelativeTransform1,
const FReal CullDistance,
const EContactShapesType ShapePairType,
const bool bUseManifold,
const bool bEnableSweep,
const FCollisionContext& Context
)

 Callback from the narrow phase to create a collision constraint for this particle pair. We should never be asked for a collision for a different particle pair, but the implicit objects may be children of the root shape.
Protected function Virtual int32

GenerateCollisionsImpl ( const FReal CullDistance,
const FReal Dt,
const FCollisionContext& Context
)

  
Protected function Virtual void

InjectCollisionImpl ( const FPBDCollisionConstraint& Constraint,
const FCollisionContext& Context
)

  
Public function Virtual void  
Protected function Virtual void

WakeCollisionsImpl ( const int32 CurrentEpoch
)

  

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