File mechanics/src/collision/native/SpaceFilter.hpp

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Spatial filtering of interactions for 2D/3D objects.

Functions

DEFINE_SPTR(space_hash)

Basic broad phase contact detection between 2D/3D mechanical systems.

algorithm description: Optimized Spatial Hashing for Collision Detection of Deformable Objects M. Teschner, B. Heidelberger, M. Mueller, D. Pomeranets, M. Gross Proceedings of VMV’03 Munich, Germany pp. 47-54 November 19-21, 2003

DEFINE_SPTR(DiskDiskRDeclaredPool)

DEFINE_SPTR(DiskPlanRDeclaredPool)

DEFINE_SPTR(CircleCircleRDeclaredPool)

DEFINE_SPTR(Hashed)

class SpaceFilter : public InteractionManager, public std::enable_shared_from_this<SpaceFilter>

Subclassed by OccSpaceFilter

Public Functions

SpaceFilter(unsigned int bboxfactor, unsigned int cellsize, SP::SiconosMatrix plans, SP::FMatrix moving_plans)

SpaceFilter(unsigned int bboxfactor, unsigned int cellsize, SP::SiconosMatrix plans)

SpaceFilter()

void insert(SP::Disk, int, int, int)

2D/3D objects insertion

void insert(SP::Circle, int, int, int)

void insert(SP::SphereLDS, int, int, int)

void insert(SP::SphereNEDS, int, int, int)

void insert(SP::Hashed)

general hashed object

inline unsigned int bboxfactor()

get parameters

inline unsigned int cellsize()

inline void setBBoxfactor(unsigned int value)

inline void setCellsize(unsigned int value)

bool haveNeighbours(SP::Hashed h)

get the neighbours

Just test the presence of neighbours.

Parameters:

h – hashed component of a body.

double minDistance(SP::Hashed h)

Give the minimal distance.

Parameters:

h – hashed component of a body.

void updateInteractions(SP::Simulation simulation) override

Broadphase contact detection: add interactions in indexSet 0.

Parameters:

simulation – the current simulation setup

void insertLine(double a, double b, double c)

inline virtual ~SpaceFilter()

Destructor.

ACCEPT_STD_VISITORS()

Protected Functions

ACCEPT_SERIALIZATION(SpaceFilter)

void _PlanCircularFilter(SP::Simulation, double A, double B, double C, double xCenter, double yCenter, double width, SP::CircularDS ds)

void _MovingPlanCircularFilter(SP::Simulation, unsigned int i, SP::CircularDS ds, double time)

void _PlanSphereLDSFilter(SP::Simulation, double A, double B, double C, double D, SP::SphereLDS ds)

void _PlanSphereNEDSFilter(SP::Simulation, double A, double B, double C, double D, SP::SphereNEDS ds)

Protected Attributes

unsigned int _bboxfactor

the bounding box factor is multiplicated by the largest object dimension

unsigned int _cellsize

the cell size

SP::SiconosMatrix _plans

plans

SP::FMatrix _moving_plans

moving plans

SP::space_hash _hash_table

SP::DiskDiskRDeclaredPool diskdisk_relations

SP::DiskPlanRDeclaredPool diskplan_relations

SP::CircleCircleRDeclaredPool circlecircle_relations

Friends

friend struct SpaceFilter::_CircularFilter

friend struct SpaceFilter::_SphereLDSFilter

friend struct SpaceFilter::_SphereNEDSFilter

friend struct SpaceFilter::_BodyHash

friend struct SpaceFilter::_FindInteractions

friend struct SpaceFilter::_IsSameDiskPlanR

friend struct SpaceFilter::_IsSameDiskMovingPlanR

friend struct SpaceFilter::_IsSameSpherePlanR

friend struct SpaceFilter::_DiskDistance