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Box2DAPIDocumentation2.0.1

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GeneratedonSunApr1315:21:272008forBox2Dby 1.5.4

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AlphabeticalList ClassList ClassHierarchy ClassMembers

Box2DClassListHerearetheclasses,structs,unionsandinterfaceswithbriefdescriptions:b2AABB Anaxisalignedboundingbox

b2Body Arigidbody

b2BodyDef Abodydefinitionholdsallthedataneededtoconstructarigidbody

b2BoundaryListener Thisiscalledwhenabody'sshapepassesoutsideoftheworldboundary

b2CircleDef Thisstructureisusedtobuildcircleshapes

b2CircleShape Acircleshape

b2Color Colorfordebugdrawing.Eachvaluehastherange[0,1]

b2Contact Theclassmanagescontactbetweentwoshapes

b2ContactEdgeAcontactedgeisusedtoconnectbodiesandcontactstogetherinacontactgraphwhereeachbodyisanodeandeachcontactisanedge

b2ContactFilter Implementthisclasstoprovidecollisionfiltering

b2ContactID Contactidstofacilitatewarmstarting

b2ContactID::Features Thefeaturesthatintersecttoformthecontactpoint

b2ContactListener Implementthisclasstogetcollisionresults

b2ContactPoint Thisstructureisusedtoreportcontactpoints

b2ContactResult Thisstructureisusedtoreportcontactpointresults

b2DebugDraw Implementandregisterthisclasswithab2Worldtoprovidedebugdrawingofphysicsentitiesinyourgame

b2DestructionListener Jointsandshapesaredestroyedwhentheirassociatedbodyisdestroyed

b2DistanceJoint Adistancejointconstrainstwopointsontwobodiestoremainatafixeddistancefromeachother

b2DistanceJointDef Distancejointdefinition

b2FilterData Thisholdscontactfilteringdata

b2GearJoint Agearjointisusedtoconnecttwojointstogether

b2GearJointDef Gearjointdefinition

b2Joint Thebasejointclass

b2JointDef Jointdefinitionsareusedtoconstructjoints

b2JointEdge Ajointedgeisusedtoconnectbodiesandjointstogetherinajointgraphwhereeachbodyisanodeandeachjointisanedge

b2Manifold Amanifoldfortwotouchingconvexshapes

b2ManifoldPoint Amanifoldpointisacontactpointbelongingtoacontactmanifold

b2MassData Thisholdsthemassdatacomputedforashape

b2Mat22 A2-by-2matrix.Storedincolumn-majororder

b2MouseJoint Amousejointisusedtomakeapointonabodytrackaspecifiedworldpoint

b2MouseJointDef Mousejointdefinition

b2OBB Anorientedboundingbox

b2PolygonDef Convexpolygon

b2PolygonShape Aconvexpolygon

b2PrismaticJoint Aprismaticjoint

b2PrismaticJointDef Prismaticjointdefinition

b2PulleyJoint Thepulleyjointisconnectedtotwobodiesandtwofixedgroundpoints

b2PulleyJointDef Pulleyjointdefinition

b2RevoluteJoint Arevolutejointconstrainstobodiestoshareacommonpointwhiletheyarefreetorotateaboutthepoint

b2RevoluteJointDef Revolutejointdefinition

b2Segment Alinesegment

b2Shape Ashapeisusedforcollisiondetection

b2ShapeDef Ashapedefinitionisusedtoconstructashape

b2Sweep Thisdescribesthemotionofabody/shapeforTOIcomputation

b2Vec2 A2Dcolumnvector

b2Version Versionnumberingscheme

b2World Theworldclassmanagesallphysicsentities,dynamicsimulation,andasynchronousqueries

b2XForm Atransformcontainstranslationandrotation



b2AABBStructReferenceAnaxisalignedboundingbox.More...

Listofallmembers.

PublicMemberFunctions

bool IsValid()const Verifythattheboundsaresorted.

PublicAttributes

b2Vec2 lowerBound thelowervertex

b2Vec2 upperBound theuppervertex

DetailedDescription

Anaxisalignedboundingbox.

Thedocumentationforthisstructwasgeneratedfromthefollowingfile:

b2Collision.h



b2BodyClassReferenceArigidbody.More...

Listofallmembers.


b2Shape* CreateShape(b2ShapeDef*shapeDef) Createsashapeandattachittothisbody.

void DestroyShape(b2Shape*shape) Destroyashape.

void SetMass(constb2MassData*massData) Setthemassproperties.

void SetMassFromShapes() Computethemasspropertiesfromtheattachedshapes.

bool SetXForm(constb2Vec2&position,float32angle) Setthepositionofthebody'soriginandrotation(radians).

constb2XForm& GetXForm()const Getthebodytransformforthebody'sorigin.

constb2Vec2& GetPosition()const Gettheworldbodyoriginposition.

float32 GetAngle()const Gettheangleinradians.

constb2Vec2& GetWorldCenter()const Gettheworldpositionofthecenterofmass.

constb2Vec2& GetLocalCenter()const Getthelocalpositionofthecenterofmass.

void SetLinearVelocity(constb2Vec2&v) Setthelinearvelocityofthecenterofmass.

b2Vec2 GetLinearVelocity()const Getthelinearvelocityofthecenterofmass.

void SetAngularVelocity(float32omega) Settheangularvelocity.

float32 GetAngularVelocity()const Gettheangularvelocity.

void ApplyForce(constb2Vec2&force,constb2Vec2&point) Applyaforceataworldpoint.

void ApplyTorque(float32torque) Applyatorque.

void ApplyImpulse(constb2Vec2&impulse,constb2Vec2&point) Applyanimpulseatapoint.

float32 GetMass()const Getthetotalmassofthebody.

float32 GetInertia()const Getthecentralrotationalinertiaofthebody.

b2Vec2 GetWorldPoint(constb2Vec2&localPoint)const Gettheworldcoordinatesofapointgiventhelocalcoordinates.

b2Vec2 GetWorldVector(constb2Vec2&localVector)const Gettheworldcoordinatesofavectorgiventhelocalcoordinates.

b2Vec2 GetLocalPoint(constb2Vec2&worldPoint)const Getsalocalpointrelativetothebody'sorigingivenaworldpoint.

b2Vec2 GetLocalVector(constb2Vec2&worldVector)const Getsalocalvectorgivenaworldvector.

b2Vec2 GetLinearVelocityFromWorldPoint(constb2Vec2&worldPoint)const Gettheworldlinearvelocityofaworldpointattachedtothisbody.

b2Vec2 GetLinearVelocityFromLocalPoint(constb2Vec2&localPoint)const Gettheworldvelocityofalocalpoint.

bool IsBullet()const Isthisbodytreatedlikeabulletforcontinuouscollisiondetection?

void SetBullet(boolflag) Shouldthisbodybetreatedlikeabulletforcontinuouscollisiondetection?

bool IsStatic()const Isthisbodystatic(immovable)?

bool IsDynamic()const Isthisbodydynamic(movable)?

bool IsFrozen()const Isthisbodyfrozen?

bool IsSleeping()const Isthisbodysleeping(notsimulating).

void AllowSleeping(boolflag) Youcandisablesleepingonthisbody.

void WakeUp() Wakeupthisbodysoitwillbeginsimulating.

void PutToSleep() Putthisbodytosleepsoitwillstopsimulating.

b2Shape* GetShapeList() Getthelistofallshapesattachedtothisbody.

b2JointEdge* GetJointList() Getthelistofalljointsattachedtothisbody.

b2Body* GetNext() Getthenextbodyintheworld'sbodylist.

void* GetUserData() Gettheuserdatapointerthatwasprovidedinthebodydefinition.

void SetUserData(void*data)

Settheuserdata.Usethistostoreyourapplicationspecificdata.

b2World* GetWorld() Gettheparentworldofthisbody.

Friends

class b2Worldclass b2DistanceJointclass b2GearJointclass b2MouseJointclass b2PrismaticJointclass b2PulleyJointclass b2RevoluteJoint

DetailedDescription

Arigidbody.

MemberFunctionDocumentation

b2Shape*b2Body::CreateShape ( b2ShapeDef* shapeDef )

Createsashapeandattachittothisbody.

Parameters:shapeDef theshapedefinition.

Warning:Thisfunctionislockedduringcallbacks.

voidb2Body::DestroyShape ( b2Shape* shape )

Destroyashape.

Thisremovestheshapefromthebroad-phaseandthereforedestroysanycontactsassociatedwiththisshape.Allshapesattachedtoabodyareimplicitlydestroyedwhenthebodyisdestroyed.

Parameters:shape theshapetoberemoved.


voidb2Body::SetMass ( constb2MassData* massData )

Setthemassproperties.

Notethatthischangesthecenterofmassposition.Ifyouarenotsurehowtocomputemassproperties,useSetMassFromShapes.Theinertiatensorisassumedtoberelativetothecenterofmass.

Parameters:massData themassproperties.

voidb2Body::SetMassFromShapes ( )

Computethemasspropertiesfromtheattachedshapes.

Youtypicallycallthisafteraddingalltheshapes.Ifyouaddorremoveshapeslater,youmaywanttocallthisagain.Notethatthischangesthecenterofmassposition.

boolb2Body::SetXForm ( constb2Vec2& position,float32 angle

)

Setthepositionofthebody'soriginandrotation(radians).

Thisbreaksanycontactsandwakestheotherbodies.

Parameters:position thenewworldpositionofthebody'sorigin(notnecessarilythecenterofmass).angle thenewworldrotationangleofthebodyinradians.

Returns:falseifthemovementputashapeoutsidetheworld.Inthiscasethebodyisautomaticallyfrozen.

constb2XForm&b2Body::GetXForm ( ) const[inline]

Getthebodytransformforthebody'sorigin.

Returns:theworldtransformofthebody'sorigin.

constb2Vec2&b2Body::GetPosition ( ) const[inline]

Gettheworldbodyoriginposition.

Returns:theworldpositionofthebody'sorigin.

float32b2Body::GetAngle ( ) const[inline]

Gettheangleinradians.

Returns:thecurrentworldrotationangleinradians.

voidb2Body::SetLinearVelocity ( constb2Vec2& v ) [inline]

Setthelinearvelocityofthecenterofmass.

Parameters:v thenewlinearvelocityofthecenterofmass.

b2Vec2b2Body::GetLinearVelocity ( ) const[inline]

Getthelinearvelocityofthecenterofmass.

Returns:thelinearvelocityofthecenterofmass.

voidb2Body::SetAngularVelocity ( float32 omega ) [inline]

Settheangularvelocity.

Parameters:omega thenewangularvelocityinradians/second.

float32b2Body::GetAngularVelocity ( ) const[inline]

Gettheangularvelocity.

Returns:theangularvelocityinradians/second.

voidb2Body::ApplyForce ( constb2Vec2& force,constb2Vec2& point

) [inline]

Applyaforceataworldpoint.

Iftheforceisnotappliedatthecenterofmass,itwillgenerateatorqueandaffecttheangularvelocity.Thiswakesupthebody.

Parameters:force theworldforcevector,usuallyinNewtons(N).point theworldpositionofthepointofapplication.

voidb2Body::ApplyTorque ( float32 torque ) [inline]

Applyatorque.

Thisaffectstheangularvelocitywithoutaffectingthelinearvelocityofthecenterofmass.Thiswakesupthebody.

Parameters:torque aboutthez-axis(outofthescreen),usuallyinN-m.

voidb2Body::ApplyImpulse ( constb2Vec2& impulse,constb2Vec2& point

) [inline]

Applyanimpulseatapoint.

Thisimmediatelymodifiesthevelocity.Italsomodifiestheangularvelocityifthepointofapplicationisnotatthecenterofmass.This

wakesupthebody.

Parameters:impulse theworldimpulsevector,usuallyinN-secondsorkg-m/s.point theworldpositionofthepointofapplication.

float32b2Body::GetMass ( ) const[inline]

Getthetotalmassofthebody.

Returns:themass,usuallyinkilograms(kg).

float32b2Body::GetInertia ( ) const[inline]

Getthecentralrotationalinertiaofthebody.

Returns:therotationalinertia,usuallyinkg-m^2.

b2Vec2b2Body::GetWorldPoint ( constb2Vec2& localPoint ) const[inline]

Gettheworldcoordinatesofapointgiventhelocalcoordinates.

Parameters:localPoint apointonthebodymeasuredrelativethethebody'sorigin.

Returns:thesamepointexpressedinworldcoordinates.

b2Vec2b2Body::GetWorldVector ( constb2Vec2& localVector ) const[inline]

Gettheworldcoordinatesofavectorgiventhelocalcoordinates.

Parameters:

localVector avectorfixedinthebody.

Returns:thesamevectorexpressedinworldcoordinates.

b2Vec2b2Body::GetLocalPoint ( constb2Vec2& worldPoint ) const[inline]

Getsalocalpointrelativetothebody'sorigingivenaworldpoint.

Parameters:a pointinworldcoordinates.

Returns:thecorrespondinglocalpointrelativetothebody'sorigin.

b2Vec2b2Body::GetLocalVector ( constb2Vec2& worldVector ) const[inline]

Getsalocalvectorgivenaworldvector.

Parameters:a vectorinworldcoordinates.

Returns:thecorrespondinglocalvector.

b2Vec2b2Body::GetLinearVelocityFromWorldPoint ( constb2Vec2& worldPoint ) const[inline]

Gettheworldlinearvelocityofaworldpointattachedtothisbody.

Parameters:a pointinworldcoordinates.

Returns:theworldvelocityofapoint.

b2Vec2b2Body::GetLinearVelocityFromLocalPoint ( constb2Vec2& localPoint ) const[inline]

Gettheworldvelocityofalocalpoint.

Parameters:a pointinlocalcoordinates.

Returns:theworldvelocityofapoint.

voidb2Body::PutToSleep ( ) [inline]

Putthisbodytosleepsoitwillstopsimulating.

Thisalsosetsthevelocitytozero.

Thedocumentationforthisclasswasgeneratedfromthefollowingfiles:

b2Body.hb2Body.cpp



b2BodyDefStructReferenceAbodydefinitionholdsallthedataneededtoconstructarigidbody.More...

Listofallmembers.


b2BodyDef() Thisconstructorsetsthebodydefinitiondefaultvalues.

PublicAttributes

b2MassData massData Youcanusethistoinitializedthemasspropertiesofthebody.

void* userData Usethistostoreapplicationspecificbodydata.

b2Vec2 position Theworldpositionofthebody.

float32 angle Theworldangleofthebodyinradians.

float32 linearDamping Lineardampingisusetoreducethelinearvelocity.

float32 angularDamping Angulardampingisusetoreducetheangularvelocity.

bool allowSleep Setthisflagtofalseifthisbodyshouldneverfallasleep.

bool isSleeping Isthisbodyinitiallysleeping?

bool fixedRotation Shouldthisbodybepreventedfromrotating?Usefulforcharacters.

bool isBullet

Isthisafastmovingbodythatshouldbepreventedfromtunnelingthroughothermovingbodies?Notethatallbodiesarepreventedfromtunnelingthroughstaticbodies.

DetailedDescription

Abodydefinitionholdsallthedataneededtoconstructarigidbody.

Youcansafelyre-usebodydefinitions.

MemberDataDocumentation

b2MassDatab2BodyDef::massData

Youcanusethistoinitializedthemasspropertiesofthebody.

Ifyouprefer,youcansetthemasspropertiesaftertheshapeshavebeenaddedusingb2Body::SetMassFromShapes.

b2Vec2b2BodyDef::position

Theworldpositionofthebody.

Avoidcreatingbodiesattheoriginsincethiscanleadtomanyoverlappingshapes.

float32b2BodyDef::linearDamping

Lineardampingisusetoreducethelinearvelocity.

Thedampingparametercanbelargerthan1.0fbutthedampingeffectbecomessensitivetothetimestepwhenthedampingparameterislarge.

float32b2BodyDef::angularDamping

Angulardampingisusetoreducetheangularvelocity.

Thedampingparametercanbelargerthan1.0fbutthedampingeffectbecomessensitivetothetimestepwhenthedampingparameterislarge.

boolb2BodyDef::allowSleep

Setthisflagtofalseifthisbodyshouldneverfallasleep.

NotethatthisincreasesCPUusage.

boolb2BodyDef::isBullet

Isthisafastmovingbodythatshouldbepreventedfromtunnelingthroughothermovingbodies?Notethatallbodiesarepreventedfromtunnelingthroughstaticbodies.

Warning:Youshouldusethisflagsparinglysinceitincreasesprocessingtime.


b2Body.h



b2BoundaryListenerClassReferenceThisiscalledwhenabody'sshapepassesoutsideoftheworldboundary.More...

Listofallmembers.


virtualvoid Violation(b2Body*body)=0 Thisiscalledforeachbodythatleavestheworldboundary.

DetailedDescription

Thisiscalledwhenabody'sshapepassesoutsideoftheworldboundary.


virtualvoidb2BoundaryListener::Violation ( b2Body* body ) [purevirtual]

Thisiscalledforeachbodythatleavestheworldboundary.

Warning:youcan'tmodifytheworldinsidethiscallback.

Thedocumentationforthisclasswasgeneratedfromthefollowingfile:

b2WorldCallbacks.h



b2CircleDefStructReferenceThisstructureisusedtobuildcircleshapes.More...

Inheritancediagramforb2CircleDef:

Listofallmembers.

DetailedDescription

Thisstructureisusedtobuildcircleshapes.


b2CircleShape.h



b2CircleShapeClassReferenceAcircleshape.More...

Inheritancediagramforb2CircleShape:

Listofallmembers.


bool TestPoint(constb2XForm&transform,constb2Vec2&p)const

Seealso:

b2Shape::TestPoint

bool TestSegment(constb2XForm&transform,float32*lambda,b2Vec2*normal,constb2Segment&segment,float32maxLambda)const

Seealso:

b2Shape::TestSegment

void ComputeAABB(b2AABB*aabb,constb2XForm&transform)const

Seealso:

b2Shape::ComputeAABB

void ComputeSweptAABB(b2AABB*aabb,constb2XForm&transform1,constb2XForm&transform2)const

Seealso:

b2Shape::ComputeSweptAABB

void ComputeMass(b2MassData*massData)const

Seealso:

b2Shape::ComputeMass

constb2Vec2& GetLocalPosition()const Getthelocalpositionofthiscircleinitsparentbody.

float32 GetRadius()const Gettheradiusofthiscircle.

Friends

class b2Shape

DetailedDescription

Acircleshape.


b2CircleShape.hb2CircleShape.cpp



b2ColorStructReferenceColorfordebugdrawing.Eachvaluehastherange[0,1].More...

Listofallmembers.

DetailedDescription

Colorfordebugdrawing.Eachvaluehastherange[0,1].


b2WorldCallbacks.h



b2ContactClassReferenceTheclassmanagescontactbetweentwoshapes.More...

Inheritedbyb2CircleContact,b2NullContact,b2PolyAndCircleContact,andb2PolygonContact.

Listofallmembers.


virtualb2Manifold* GetManifolds()=0 Getthemanifoldarray.

int32 GetManifoldCount()const Getthenumberofmanifolds.

bool IsSolid()const Isthiscontactsolid?

b2Contact* GetNext() Getthenextcontactintheworld'scontactlist.

b2Shape* GetShape1() Getthefirstshapeinthiscontact.

b2Shape* GetShape2() Getthesecondshapeinthiscontact.

DetailedDescription

Theclassmanagescontactbetweentwoshapes.

AcontactexistsforeachoverlappingAABBinthebroad-phase(exceptiffiltered).Thereforeacontactobjectmayexistthathasnocontactpoints.


int32b2Contact::GetManifoldCount ( ) const[inline]

Getthenumberofmanifolds.

Thisis0or1betweenconvexshapes.Thismaybegreaterthan1forconvex-vs-concaveshapes.Eachmanifoldholdsuptotwocontactpointswithasharedcontactnormal.

boolb2Contact::IsSolid ( ) const[inline]

Isthiscontactsolid?

Returns:trueifthiscontactshouldgeneratearesponse.


b2Contact.hb2Contact.cpp



b2ContactEdgeStructReferenceAcontactedgeisusedtoconnectbodiesandcontactstogetherinacontactgraphwhereeachbodyisanodeandeachcontactisanedge.More...

Listofallmembers.

PublicAttributes

b2Body* other providesquickaccesstotheotherbodyattached.

b2Contact* contact thecontact

b2ContactEdge* prev thepreviouscontactedgeinthebody'scontactlist

b2ContactEdge* next thenextcontactedgeinthebody'scontactlist

DetailedDescription

Acontactedgeisusedtoconnectbodiesandcontactstogetherinacontactgraphwhereeachbodyisanodeandeachcontactisanedge.

Acontactedgebelongstoadoublylinkedlistmaintainedineachattachedbody.Eachcontacthastwocontactnodes,oneforeachattachedbody.


b2Contact.h



b2ContactFilterClassReferenceImplementthisclasstoprovidecollisionfiltering.More...

Listofallmembers.


virtualbool ShouldCollide(b2Shape*shape1,b2Shape*shape2)

Returntrueifcontactcalculationsshouldbeperformedbetweenthesetwoshapes.

DetailedDescription

Implementthisclasstoprovidecollisionfiltering.

Inotherwords,youcanimplementthisclassifyouwantfinercontrolovercontactcreation.


boolb2ContactFilter::ShouldCollide ( b2Shape* shape1,b2Shape* shape2

) [virtual]

Returntrueifcontactcalculationsshouldbeperformedbetweenthesetwoshapes.

Warning:forperformancereasonsthisisonlycalledwhentheAABBsbegintooverlap.


b2WorldCallbacks.hb2WorldCallbacks.cpp



b2ContactIDUnionReferenceContactidstofacilitatewarmstarting.More...

Listofallmembers.

PublicAttributes

uint32 key Usedtoquicklycomparecontactids.

Classes

struct Features Thefeaturesthatintersecttoformthecontactpoint.More...

DetailedDescription

Contactidstofacilitatewarmstarting.

Thedocumentationforthisunionwasgeneratedfromthefollowingfile:

b2Collision.h





b2ContactID::Features

b2ContactID::FeaturesStructReferenceThefeaturesthatintersecttoformthecontactpoint.More...

Listofallmembers.

PublicAttributes

uint8 referenceEdge Theedgethatdefinestheoutwardcontactnormal.

uint8 incidentEdge Theedgemostanti-paralleltothereferenceedge.

uint8 incidentVertex Thevertex(0or1)ontheincidentedgethatwasclipped.

uint8 flip Avalueof1indicatesthatthereferenceedgeisonshape2.

DetailedDescription

Thefeaturesthatintersecttoformthecontactpoint.


b2Collision.h



b2ContactListenerClassReferenceImplementthisclasstogetcollisionresults.More...

Listofallmembers.


virtualvoid Add(constb2ContactPoint*point) Calledwhenacontactpointisadded.

virtualvoid Persist(constb2ContactPoint*point) Calledwhenacontactpointpersists.

virtualvoid Remove(constb2ContactPoint*point) Calledwhenacontactpointisremoved.

virtualvoid Result(constb2ContactResult*point) Calledafteracontactpointissolved.

DetailedDescription

Implementthisclasstogetcollisionresults.

Youcanusetheseresultsforthingslikesoundsandgamelogic.Youcanalsogetcontactresultsbytraversingthecontactlistsafterthetimestep.However,youmightmisssomecontactsbecausecontinuousphysicsleadstosub-stepping.Additionallyyoumayreceivemultiplecallbacksforthesamecontactinasingletimestep.Youshouldstrivetomakeyourcallbacksefficientbecausetheremaybemanycallbackspertimestep.

Warning:Thecontactseparationisthelastcomputedvalue.

Youcannotcreate/destroyBox2Dentitiesinsidethesecallbacks.


virtualvoidb2ContactListener::Add ( constb2ContactPoint* point ) [inline,virtual]

Calledwhenacontactpointisadded.

Thisincludesthegeometryandtheforces.

virtualvoidb2ContactListener::Persist ( constb2ContactPoint* point ) [inline,virtual]

Calledwhenacontactpointpersists.

Thisincludesthegeometryandtheforces.

virtualvoidb2ContactListener::Remove ( constb2ContactPoint* point ) [inline,virtual]

Calledwhenacontactpointisremoved.

Thisincludesthelastcomputedgeometryandforces.


b2WorldCallbacks.h



b2ContactPointStructReferenceThisstructureisusedtoreportcontactpoints.More...

Listofallmembers.

PublicAttributes

b2Shape* shape1 thefirstshape

b2Shape* shape2 thesecondshape

b2Vec2 position positioninworldcoordinates

b2Vec2 velocity velocityofpointonbody2relativetopointonbody1(pre-solver)

b2Vec2 normal pointsfromshape1toshape2

float32 separation theseparationisnegativewhenshapesaretouching

float32 friction thecombinedfrictioncoefficient

float32 restitution thecombinedrestitutioncoefficient

b2ContactID id thecontactididentifiesthefeaturesincontact

DetailedDescription

Thisstructureisusedtoreportcontactpoints.


b2Contact.h



b2ContactResultStructReferenceThisstructureisusedtoreportcontactpointresults.More...

Listofallmembers.

PublicAttributes

b2Shape* shape1 thefirstshape

b2Shape* shape2 thesecondshape

b2Vec2 position positioninworldcoordinates

b2Vec2 normal pointsfromshape1toshape2

float32 normalImpulse thenormalimpulseappliedtobody2

float32 tangentImpulse thetangentimpulseappliedtobody2

b2ContactID id thecontactididentifiesthefeaturesincontact

DetailedDescription

Thisstructureisusedtoreportcontactpointresults.


b2Contact.h



b2DebugDrawClassReferenceImplementandregisterthisclasswithab2Worldtoprovidedebugdrawingofphysicsentitiesinyourgame.More...

Listofallmembers.

PublicTypes

enum

{e_shapeBit=0x0001,e_jointBit=0x0002,e_coreShapeBit=0x0004,e_aabbBit=0x0008,e_obbBit=0x0010,e_pairBit=0x0020,e_centerOfMassBit=0x0040}


void SetFlags(uint32flags) Setthedrawingflags.

uint32 GetFlags()const Getthedrawingflags.

void AppendFlags(uint32flags) Appendflagstothecurrentflags.

void ClearFlags(uint32flags) Clearflagsfromthecurrentflags.

virtualvoid DrawPolygon(constb2Vec2*vertices,int32vertexCount,constb2Color&color)=0

DrawaclosedpolygonprovidedinCCWorder.

virtualvoid DrawSolidPolygon(constb2Vec2*vertices,int32vertexCount,constb2Color&color)=0

DrawasolidclosedpolygonprovidedinCCWorder.

virtualvoid DrawCircle(constb2Vec2&center,float32radius,constb2Color&color)=0 Drawacircle.

virtualvoid DrawSolidCircle(constb2Vec2&center,float32radius,constb2Vec2&axis,constb2Color&color)=0

Drawasolidcircle.

virtualvoid DrawSegment(constb2Vec2&p1,constb2Vec2&p2,constb2Color&color)=0 Drawalinesegment.

virtualvoid DrawXForm(constb2XForm&xf)=0 Drawatransform.

DetailedDescription

Implementandregisterthisclasswithab2Worldtoprovidedebugdrawingofphysicsentitiesinyourgame.

MemberEnumerationDocumentation

anonymousenum

Enumerator:e_shapeBit drawshapese_jointBit drawjointconnectionse_coreShapeBit drawcore(TOI)shapese_aabbBit drawaxisalignedboundingboxese_obbBit draworientedboundingboxese_pairBit drawbroad-phasepairse_centerOfMassBit drawcenterofmassframe


virtualvoidb2DebugDraw::DrawXForm ( constb2XForm& xf ) [purevirtual]

Drawatransform.

Chooseyourownlengthscale.

Parameters:xf atransform.


b2WorldCallbacks.hb2WorldCallbacks.cpp



b2DestructionListenerClassReferenceJointsandshapesaredestroyedwhentheirassociatedbodyisdestroyed.More...

Listofallmembers.


virtualvoid SayGoodbye(b2Joint*joint)=0

Calledwhenanyjointisabouttobedestroyedduetothedestructionofoneofitsattachedbodies.

virtualvoid SayGoodbye(b2Shape*shape)=0

Calledwhenanyshapeisabouttobedestroyedduetothedestructionofitsparentbody.

DetailedDescription

Jointsandshapesaredestroyedwhentheirassociatedbodyisdestroyed.

Implementthislistenersothatyoumaynullifyreferencestothesejointsandshapes.


virtualvoidb2DestructionListener::SayGoodbye ( b2Joint* joint ) [purevirtual]

Calledwhenanyjointisabouttobedestroyedduetothedestructionofoneofitsattachedbodies.

virtualvoidb2DestructionListener::SayGoodbye ( b2Shape* shape ) [purevirtual]

Calledwhenanyshapeisabouttobedestroyedduetothedestructionofitsparentbody.


b2WorldCallbacks.h



b2DistanceJointClassReferenceAdistancejointconstrainstwopointsontwobodiestoremainatafixeddistancefromeachother.More...

Inheritancediagramforb2DistanceJoint:

Listofallmembers.


b2Vec2 GetAnchor1()const Gettheanchorpointonbody1inworldcoordinates.


b2Vec2 GetReactionForce()const Getthereactionforceonbody2atthejointanchor.

float32 GetReactionTorque()const Getthereactiontorqueonbody2.

DetailedDescription

Adistancejointconstrainstwopointsontwobodiestoremainatafixeddistancefromeachother.

Youcanviewthisasamassless,rigidrod.


b2DistanceJoint.hb2DistanceJoint.cpp



b2DistanceJointDefStructReferenceDistancejointdefinition.More...

Inheritancediagramforb2DistanceJointDef:

Listofallmembers.


void Initialize(b2Body*body1,b2Body*body2,constb2Vec2&anchor1,constb2Vec2&anchor2)

Initializethebodies,anchors,andlengthusingtheworldanchors.

PublicAttributes

b2Vec2 localAnchor1 Thelocalanchorpointrelativetobody1'sorigin.


float32 length Theequilibriumlengthbetweentheanchorpoints.

float32 frequencyHz Theresponsespeed.

float32 dampingRatio Thedampingratio.0=nodamping,1=criticaldamping.

DetailedDescription

Distancejointdefinition.

Thisrequiresdefiningananchorpointonbothbodiesandthenon-zerolengthofthedistancejoint.Thedefinitionuseslocalanchorpointssothattheinitialconfigurationcanviolatetheconstraintslightly.Thishelpswhensavingandloadingagame.

Warning:Donotuseazeroorshortlength.


voidb2DistanceJointDef::Initialize ( b2Body* body1,b2Body* body2,constb2Vec2& anchor1,constb2Vec2& anchor2

)

Initializethebodies,anchors,andlengthusingtheworldanchors.

Thedocumentationforthisstructwasgeneratedfromthefollowingfiles:

b2DistanceJoint.hb2DistanceJoint.cpp



b2FilterDataStructReferenceThisholdscontactfilteringdata.More...

Listofallmembers.

PublicAttributes

uint16 categoryBits Thecollisioncategorybits.Normallyyouwouldjustsetonebit.

uint16 maskBits Thecollisionmaskbits.

int16 groupIndex

Collisiongroupsallowacertaingroupofobjectstonevercollide(negative)oralwayscollide(positive).

DetailedDescription

Thisholdscontactfilteringdata.


uint16b2FilterData::maskBits

Thecollisionmaskbits.

Thisstatesthecategoriesthatthisshapewouldacceptforcollision.

int16b2FilterData::groupIndex

Collisiongroupsallowacertaingroupofobjectstonevercollide(negative)oralwayscollide(positive).

Zeromeansnocollisiongroup.Non-zerogroupfilteringalwayswinsagainstthemaskbits.


b2Shape.h



b2GearJointClassReferenceAgearjointisusedtoconnecttwojointstogether.More...

Inheritancediagramforb2GearJoint:

Listofallmembers.






float32 GetRatio()const Getthegearratio.

DetailedDescription

Agearjointisusedtoconnecttwojointstogether.

Eitherjointcanbearevoluteorprismaticjoint.Youspecifyagearratiotobindthemotionstogether:coordinate1+ratio*coordinate2=constantTheratiocanbenegativeorpositive.Ifonejointisarevolutejointandtheotherjointisaprismaticjoint,thentheratiowillhaveunitsoflengthorunitsof1/length.

Warning:Therevoluteandprismaticjointsmustbeattachedtofixedbodies(whichmustbebody1onthosejoints).


b2GearJoint.hb2GearJoint.cpp



b2GearJointDefStructReferenceGearjointdefinition.More...

Inheritancediagramforb2GearJointDef:

Listofallmembers.

PublicAttributes

b2Joint* joint1 Thefirstrevolute/prismaticjointattachedtothegearjoint.

b2Joint* joint2 Thesecondrevolute/prismaticjointattachedtothegearjoint.

float32 ratio Thegearratio.

DetailedDescription

Gearjointdefinition.

Thisdefinitionrequirestwoexistingrevoluteorprismaticjoints(anycombinationwillwork).Theprovidedjointsmustattachadynamicbodytoastaticbody.


float32b2GearJointDef::ratio

Thegearratio.

Seealso:b2GearJointforexplanation.


b2GearJoint.h



b2JointClassReferenceThebasejointclass.More...

Inheritancediagramforb2Joint:

Listofallmembers.


b2JointType GetType()const Getthetypeoftheconcretejoint.

b2Body* GetBody1() Getthefirstbodyattachedtothisjoint.

b2Body* GetBody2() Getthesecondbodyattachedtothisjoint.

virtualb2Vec2 GetAnchor1()const=0 Gettheanchorpointonbody1inworldcoordinates.

virtualb2Vec2 GetAnchor2()const=0 Gettheanchorpointonbody2inworldcoordinates.

virtualb2Vec2 GetReactionForce()const=0 Getthereactionforceonbody2atthejointanchor.

virtualfloat32 GetReactionTorque()const=0 Getthereactiontorqueonbody2.

b2Joint* GetNext() Getthenextjointtheworldjointlist.

void* GetUserData() Gettheuserdatapointer.

void SetUserData(void*data) Settheuserdatapointer.

Friends

class b2Worldclass b2Body

DetailedDescription

Thebasejointclass.

Jointsareusedtoconstrainttwobodiestogetherinvariousfashions.Somejointsalsofeaturelimitsandmotors.


b2Joint.hb2Joint.cpp



b2JointDefStructReferenceJointdefinitionsareusedtoconstructjoints.More...

Inheritancediagramforb2JointDef:

Listofallmembers.

PublicAttributes

b2JointType type Thejointtypeissetautomaticallyforconcretejointtypes.

void* userData Usethistoattachapplicationspecificdatatoyourjoints.

b2Body* body1 Thefirstattachedbody.

b2Body* body2 Thesecondattachedbody.

bool collideConnected Setthisflagtotrueiftheattachedbodiesshouldcollide.

DetailedDescription

Jointdefinitionsareusedtoconstructjoints.


b2Joint.h



b2JointEdgeStructReferenceAjointedgeisusedtoconnectbodiesandjointstogetherinajointgraphwhereeachbodyisanodeandeachjointisanedge.More...

Listofallmembers.

PublicAttributes

b2Body* other providesquickaccesstotheotherbodyattached.

b2Joint* joint thejoint

b2JointEdge* prev thepreviousjointedgeinthebody'sjointlist

b2JointEdge* next thenextjointedgeinthebody'sjointlist

DetailedDescription

Ajointedgeisusedtoconnectbodiesandjointstogetherinajointgraphwhereeachbodyisanodeandeachjointisanedge.

Ajointedgebelongstoadoublylinkedlistmaintainedineachattachedbody.Eachjointhastwojointnodes,oneforeachattachedbody.


b2Joint.h



b2ManifoldStructReferenceAmanifoldfortwotouchingconvexshapes.More...

Listofallmembers.

PublicAttributes

b2ManifoldPoint points[b2_maxManifoldPoints] thepointsofcontact

b2Vec2 normal thesharedunitnormalvector

int32 pointCount thenumberofmanifoldpoints

DetailedDescription

Amanifoldfortwotouchingconvexshapes.


b2Collision.h



b2ManifoldPointStructReferenceAmanifoldpointisacontactpointbelongingtoacontactmanifold.More...

Listofallmembers.

PublicAttributes

b2Vec2 localPoint1 localpositionofthecontactpointinbody1

b2Vec2 localPoint2 localpositionofthecontactpointinbody2

float32 separation theseparationoftheshapesalongthenormalvector

float32 normalImpulse thenon-penetrationimpulse

float32 tangentImpulse thefrictionimpulse

b2ContactID id uniquelyidentifiesacontactpointbetweentwoshapes

DetailedDescription

Amanifoldpointisacontactpointbelongingtoacontactmanifold.

Itholdsdetailsrelatedtothegeometryanddynamicsofthecontactpoints.ThepointisstoredinlocalcoordinatesbecauseCCDrequiressub-steppinginwhichtheseparationisstale.


b2Collision.h



b2MassDataStructReferenceThisholdsthemassdatacomputedforashape.More...

Listofallmembers.

PublicAttributes

float32 mass Themassoftheshape,usuallyinkilograms.

b2Vec2 center Thepositionoftheshape'scentroidrelativetotheshape'sorigin.

float32 I Therotationalinertiaoftheshape.

DetailedDescription

Thisholdsthemassdatacomputedforashape.


b2Shape.h



b2Mat22StructReferenceA2-by-2matrix.Storedincolumn-majororder.More...

Listofallmembers.


b2Mat22() Thedefaultconstructordoesnothing(forperformance).

b2Mat22(constb2Vec2&c1,constb2Vec2&c2) Constructthismatrixusingcolumns.

b2Mat22(float32a11,float32a12,float32a21,float32a22) Constructthismatrixusingscalars.

b2Mat22(float32angle) Constructthismatrixusinganangle.

void Set(constb2Vec2&c1,constb2Vec2&c2) Initializethismatrixusingcolumns.

void Set(float32angle) Initializethismatrixusinganangle.

void SetIdentity() Setthistotheidentitymatrix.

void SetZero() Setthismatrixtoallzeros.

float32 GetAngle()const Extracttheanglefromthismatrix(assumedtobearotationmatrix).

b2Vec2 Solve(constb2Vec2&b)const SolveA*x=b,wherebisacolumnvector.

DetailedDescription

A2-by-2matrix.Storedincolumn-majororder.

Constructor&DestructorDocumentation

b2Mat22::b2Mat22 ( float32 angle ) [inline,explicit]

Constructthismatrixusinganangle.

Thismatrixbecomesanorthonormalrotationmatrix.


voidb2Mat22::Set ( float32 angle ) [inline]

Initializethismatrixusinganangle.

Thismatrixbecomesanorthonormalrotationmatrix.

float32b2Mat22::GetAngle ( ) const[inline]

Extracttheanglefromthismatrix(assumedtobearotationmatrix).

b2Vec2b2Mat22::Solve ( constb2Vec2& b ) const[inline]

SolveA*x=b,wherebisacolumnvector.

Thisismoreefficientthancomputingtheinverseinone-shotcases.


b2Math.h



b2MouseJointClassReferenceAmousejointisusedtomakeapointonabodytrackaspecifiedworldpoint.More...

Inheritancediagramforb2MouseJoint:

Listofallmembers.


b2Vec2 GetAnchor1()const Implementsb2Joint.b2Vec2 GetAnchor2()const Implementsb2Joint.b2Vec2 GetReactionForce()const Implementsb2Joint.float32 GetReactionTorque()const Implementsb2Joint.

void SetTarget(constb2Vec2&target) Usethistoupdatethetargetpoint.

DetailedDescription

Amousejointisusedtomakeapointonabodytrackaspecifiedworldpoint.

Thisasoftconstraintwithamaximumforce.Thisallowstheconstrainttostretchandwithoutapplyinghugeforces.


b2MouseJoint.hb2MouseJoint.cpp



b2MouseJointDefStructReferenceMousejointdefinition.More...

Inheritancediagramforb2MouseJointDef:

Listofallmembers.

PublicAttributes

b2Vec2 target Theinitialworldtargetpoint.

float32 maxForce Themaximumconstraintforcethatcanbeexertedtomovethecandidatebody.

float32 frequencyHz Theresponsespeed.

float32 dampingRatio Thedampingratio.0=nodamping,1=criticaldamping.

float32 timeStep Thetimestepusedinthesimulation.

DetailedDescription

Mousejointdefinition.

Thisrequiresaworldtargetpoint,tuningparameters,andthetimestep.


b2Vec2b2MouseJointDef::target

Theinitialworldtargetpoint.

Thisisassumedtocoincidewiththebodyanchorinitially.

float32b2MouseJointDef::maxForce

Themaximumconstraintforcethatcanbeexertedtomovethecandidatebody.

Usuallyyouwillexpressassomemultipleoftheweight(multiplier*mass*gravity).


b2MouseJoint.h



b2OBBStructReferenceAnorientedboundingbox.More...

Listofallmembers.

PublicAttributes

b2Mat22 R therotationmatrix

b2Vec2 center thelocalcentroid

b2Vec2 extents thehalf-widths

DetailedDescription

Anorientedboundingbox.


b2Collision.h



b2PolygonDefStructReferenceConvexpolygon.More...

Inheritancediagramforb2PolygonDef:

Listofallmembers.


void SetAsBox(float32hx,float32hy) Buildverticestorepresentanaxis-alignedbox.

void SetAsBox(float32hx,float32hy,constb2Vec2&center,float32angle) Buildverticestorepresentanorientedbox.

PublicAttributes

b2Vec2 vertices[b2_maxPolygonVertices] Thepolygonverticesinlocalcoordinates.

int32 vertexCount Thenumberofpolygonvertices.

DetailedDescription

Convexpolygon.

TheverticesmustbeinCCWorderforaright-handedcoordinatesystemwiththez-axiscomingoutofthescreen.


voidb2PolygonDef::SetAsBox ( float32 hx,float32 hy

)

Buildverticestorepresentanaxis-alignedbox.

Parameters:hx thehalf-width.hy thehalf-height.

voidb2PolygonDef::SetAsBox ( float32 hx,float32 hy,constb2Vec2& center,float32 angle

)

Buildverticestorepresentanorientedbox.

Parameters:hx thehalf-width.hy thehalf-height.center thecenteroftheboxinlocalcoordinates.angle therotationoftheboxinlocalcoordinates.


b2PolygonShape.hb2PolygonShape.cpp



b2PolygonShapeClassReferenceAconvexpolygon.More...

Inheritancediagramforb2PolygonShape:

Listofallmembers.


bool TestPoint(constb2XForm&transform,constb2Vec2&p)const

Seealso:

b2Shape::TestPoint

bool TestSegment(constb2XForm&transform,float32*lambda,b2Vec2*normal,constb2Segment&segment,float32maxLambda)const

Seealso:

b2Shape::TestSegment

void ComputeAABB(b2AABB*aabb,constb2XForm&transform)const

Seealso:

b2Shape::ComputeAABB

void ComputeSweptAABB(b2AABB*aabb,constb2XForm&transform1,constb2XForm&transform2)const

Seealso:

b2Shape::ComputeSweptAABB

void ComputeMass(b2MassData*massData)const

Seealso:

b2Shape::ComputeMass

constb2OBB& GetOBB()const Gettheorientedboundingboxrelativetotheparentbody.

constb2Vec2& GetCentroid()const Getlocalcentroidrelativetotheparentbody.

int32 GetVertexCount()const Getthevertexcount.

constb2Vec2* GetVertices()const Gettheverticesinlocalcoordinates.

constb2Vec2* GetCoreVertices()const Getthecoreverticesinlocalcoordinates.

constb2Vec2* GetNormals()const Gettheedgenormalvectors.Thereisoneforeachvertex.

b2Vec2 GetFirstVertex(constb2XForm&xf)const Getthefirstvertexandapplythesuppliedtransform.

b2Vec2 Centroid(constb2XForm&xf)const Getthecentroidandapplythesuppliedtransform.

b2Vec2 Support(constb2XForm&xf,constb2Vec2&d)const Getthesupportpointinthegivenworlddirection.

Friends

class b2Shape

DetailedDescription

Aconvexpolygon.


constb2Vec2*b2PolygonShape::GetCoreVertices ( ) const[inline]

Getthecoreverticesinlocalcoordinates.

Theseverticesrepresentasmallerpolygonthatisusedfortimeofimpactcomputations.

b2Vec2b2PolygonShape::Support ( constb2XForm& xf,constb2Vec2& d

) const

Getthesupportpointinthegivenworlddirection.

Usethesuppliedtransform.


b2PolygonShape.hb2PolygonShape.cpp



b2PrismaticJointClassReferenceAprismaticjoint.More...

Inheritancediagramforb2PrismaticJoint:

Listofallmembers.






float32 GetJointTranslation()const Getthecurrentjointtranslation,usuallyinmeters.

float32 GetJointSpeed()const Getthecurrentjointtranslationspeed,usuallyinmeterspersecond.

bool IsLimitEnabled()const Isthejointlimitenabled?

void EnableLimit(boolflag) Enable/disablethejointlimit.

float32 GetLowerLimit()const Getthelowerjointlimit,usuallyinmeters.

float32 GetUpperLimit()const Gettheupperjointlimit,usuallyinmeters.

void SetLimits(float32lower,float32upper) Setthejointlimits,usuallyinmeters.

bool IsMotorEnabled()const Isthejointmotorenabled?

void EnableMotor(boolflag) Enable/disablethejointmotor.

void SetMotorSpeed(float32speed) Setthemotorspeed,usuallyinmeterspersecond.

float32 GetMotorSpeed()const Getthemotorspeed,usuallyinmeterspersecond.

void SetMaxMotorForce(float32force) Setthemaximummotorforce,usuallyinN.

float32 GetMotorForce()const Getthecurrentmotorforce,usuallyinN.

DetailedDescription

Aprismaticjoint.

Thisjointprovidesonedegreeoffreedom:translationalonganaxisfixedinbody1.Relativerotationisprevented.Youcanuseajointlimittorestricttherangeofmotionandajointmotortodrivethemotionortomodeljointfriction.


b2PrismaticJoint.hb2PrismaticJoint.cpp



b2PrismaticJointDefStructReferencePrismaticjointdefinition.More...

Inheritancediagramforb2PrismaticJointDef:

Listofallmembers.


void Initialize(b2Body*body1,b2Body*body2,constb2Vec2&anchor,constb2Vec2&axis)

Initializethebodies,anchors,axis,andreferenceangleusingtheworldanchorandworldaxis.

PublicAttributes



b2Vec2 localAxis1 Thelocaltranslationaxisinbody1.

float32 referenceAngle Theconstrainedanglebetweenthebodies:body2_angle-body1_angle.

bool enableLimit Enable/disablethejointlimit.

float32 lowerTranslation Thelowertranslationlimit,usuallyinmeters.

float32 upperTranslation Theuppertranslationlimit,usuallyinmeters.

bool enableMotor Enable/disablethejointmotor.

float32 maxMotorForce Themaximummotortorque,usuallyinN-m.

float32 motorSpeed Thedesiredmotorspeedinradianspersecond.

DetailedDescription

Prismaticjointdefinition.

Thisrequiresdefiningalineofmotionusinganaxisandananchorpoint.Thedefinitionuseslocalanchorpointsandalocalaxissothattheinitialconfigurationcanviolatetheconstraintslightly.Thejointtranslationiszerowhenthelocalanchorpointscoincideinworldspace.Usinglocalanchorsandalocalaxishelpswhensavingandloadingagame.


voidb2PrismaticJointDef::Initialize ( b2Body* body1,b2Body* body2,constb2Vec2& anchor,constb2Vec2& axis

)

Initializethebodies,anchors,axis,andreferenceangleusingtheworldanchorandworldaxis.


b2PrismaticJoint.hb2PrismaticJoint.cpp



b2PulleyJointClassReferenceThepulleyjointisconnectedtotwobodiesandtwofixedgroundpoints.More...

Inheritancediagramforb2PulleyJoint:

Listofallmembers.






b2Vec2 GetGroundAnchor1()const Getthefirstgroundanchor.

b2Vec2 GetGroundAnchor2()const Getthesecondgroundanchor.

float32 GetLength1()const Getthecurrentlengthofthesegmentattachedtobody1.

float32 GetLength2()const Getthecurrentlengthofthesegmentattachedtobody2.

float32 GetRatio()const Getthepulleyratio.

DetailedDescription

Thepulleyjointisconnectedtotwobodiesandtwofixedgroundpoints.

Thepulleysupportsaratiosuchthat:length1+ratio*length2<=constantYes,theforcetransmittedisscaledbytheratio.Thepulleyalsoenforcesamaximumlengthlimitonbothsides.Thisisusefultopreventonesideofthepulleyhittingthetop.


b2PulleyJoint.hb2PulleyJoint.cpp



b2PulleyJointDefStructReferencePulleyjointdefinition.More...

Inheritancediagramforb2PulleyJointDef:

Listofallmembers.


voidInitialize(b2Body*body1,b2Body*body2,constb2Vec2&groundAnchor1,constb2Vec2&groundAnchor2,constb2Vec2&anchor1,constb2Vec2&anchor2,float32ratio)

Initializethebodies,anchors,lengths,maxlengths,andratiousingtheworldanchors.

PublicAttributes

b2Vec2 groundAnchor1 Thefirstgroundanchorinworldcoordinates.Thispointnevermoves.

b2Vec2 groundAnchor2 Thesecondgroundanchorinworldcoordinates.Thispointnevermoves.



float32 length1 Theareferencelengthforthesegmentattachedtobody1.

float32 maxLength1 Themaximumlengthofthesegmentattachedtobody1.

float32 length2 Theareferencelengthforthesegmentattachedtobody2.

float32 maxLength2 Themaximumlengthofthesegmentattachedtobody2.

float32 ratio Thepulleyratio,usedtosimulateablock-and-tackle.

DetailedDescription

Pulleyjointdefinition.

Thisrequirestwogroundanchors,twodynamicbodyanchorpoints,maxlengthsforeachside,andapulleyratio.


b2PulleyJoint.hb2PulleyJoint.cpp



b2RevoluteJointClassReferenceArevolutejointconstrainstobodiestoshareacommonpointwhiletheyarefreetorotateaboutthepoint.More...

Inheritancediagramforb2RevoluteJoint:

Listofallmembers.






float32 GetJointAngle()const Getthecurrentjointangleinradians.

float32 GetJointSpeed()const Getthecurrentjointanglespeedinradianspersecond.

bool IsLimitEnabled()const Isthejointlimitenabled?

void EnableLimit(boolflag) Enable/disablethejointlimit.

float32 GetLowerLimit()const Getthelowerjointlimitinradians.

float32 GetUpperLimit()const Gettheupperjointlimitinradians.

void SetLimits(float32lower,float32upper) Setthejointlimitsinradians.

bool IsMotorEnabled()const Isthejointmotorenabled?

void EnableMotor(boolflag) Enable/disablethejointmotor.

void SetMotorSpeed(float32speed) Setthemotorspeedinradianspersecond.

float32 GetMotorSpeed()const Getthemotorspeedinradianspersecond.

void SetMaxMotorTorque(float32torque) Setthemaximummotortorque,usuallyinN-m.

float32 GetMotorTorque()const Getthecurrentmotortorque,usuallyinN-m.

DetailedDescription

Arevolutejointconstrainstobodiestoshareacommonpointwhiletheyarefreetorotateaboutthepoint.

Therelativerotationaboutthesharedpointisthejointangle.Youcanlimittherelativerotationwithajointlimitthatspecifiesalowerandupperangle.Youcanuseamotortodrivetherelativerotationaboutthesharedpoint.Amaximummotortorqueisprovidedsothatinfiniteforcesarenotgenerated.


b2RevoluteJoint.hb2RevoluteJoint.cpp



b2RevoluteJointDefStructReferenceRevolutejointdefinition.More...

Inheritancediagramforb2RevoluteJointDef:

Listofallmembers.


void Initialize(b2Body*body1,b2Body*body2,constb2Vec2&anchor) Initializethebodies,anchors,andreferenceangleusingtheworldanchor.

PublicAttributes



float32 referenceAngle Thebody2angleminusbody1angleinthereferencestate(radians).

bool enableLimit Aflagtoenablejointlimits.

float32 lowerAngle Thelowerangleforthejointlimit(radians).

float32 upperAngle Theupperangleforthejointlimit(radians).

bool enableMotor Aflagtoenablethejointmotor.

float32 motorSpeed Thedesiredmotorspeed.Usuallyinradianspersecond.

float32 maxMotorTorque Themaximummotortorqueusedtoachievethedesiredmotorspeed.

DetailedDescription

Revolutejointdefinition.

Thisrequiresdefiningananchorpointwherethebodiesarejoined.Thedefinitionuseslocalanchorpointssothattheinitialconfigurationcanviolatetheconstraintslightly.Youalsoneedtospecifytheinitialrelativeangleforjointlimits.Thishelpswhensavingandloadingagame.Thelocalanchorpointsaremeasuredfromthebody'soriginratherthanthecenterofmassbecause:1.youmightnotknowwherethecenterofmasswillbe.2.ifyouadd/removeshapesfromabodyandrecomputethemass,thejointswillbebroken.


voidb2RevoluteJointDef::Initialize ( b2Body* body1,b2Body* body2,constb2Vec2& anchor

)

Initializethebodies,anchors,andreferenceangleusingtheworldanchor.


float32b2RevoluteJointDef::maxMotorTorque

Themaximummotortorqueusedtoachievethedesiredmotorspeed.

UsuallyinN-m.


b2RevoluteJoint.hb2RevoluteJoint.cpp



b2SegmentStructReferenceAlinesegment.More...

Listofallmembers.


bool TestSegment(float32*lambda,b2Vec2*normal,constb2Segment&segment,float32maxLambda)const

Raycastagainstthissegmentwithanothersegment.

PublicAttributes

b2Vec2 p1 thestartingpoint

b2Vec2 p2 theendingpoint

DetailedDescription

Alinesegment.


b2Collision.hb2Collision.cpp



b2ShapeClassReferenceAshapeisusedforcollisiondetection.More...

Inheritancediagramforb2Shape:

Listofallmembers.


b2ShapeType GetType()const Getthetypeofthisshape.

bool IsSensor()const Isthisshapeasensor(non-solid)?

void SetFilterData(constb2FilterData&filter) Setthecontactfilteringdata.

constb2FilterData& GetFilterData()const Getthecontactfilteringdata.

b2Body* GetBody() Gettheparentbodyofthisshape.

b2Shape* GetNext() Getthenextshapeintheparentbody'sshapelist.

void* GetUserData() Gettheuserdatathatwasassignedintheshapedefinition.

void SetUserData(void*data) Settheuserdata.Usethistostoreyourapplicationspecificdata.

virtualbool TestPoint(constb2XForm&xf,constb2Vec2&p)const=0 Testapointforcontainmentinthisshape.

virtualbool TestSegment(constb2XForm&xf,float32*lambda,b2Vec2*normal,constb2Segment&segment,float32maxLambda)const=0

Performaraycastagainstthisshape.

virtualvoid ComputeAABB(b2AABB*aabb,constb2XForm&xf)const=0

Givenatransform,computetheassociatedaxisalignedboundingboxforthisshape.

virtualvoid ComputeSweptAABB(b2AABB*aabb,constb2XForm&xf1,constb2XForm&xf2)const=0

Giventwotransforms,computetheassociatedsweptaxisalignedboundingboxforthisshape.

virtualvoid ComputeMass(b2MassData*massData)const=0

Computethemasspropertiesofthisshapeusingitsdimensionsanddensity.

float32 GetSweepRadius()const Getthemaximumradiusabouttheparentbody'scenterofmass.

float32 GetFriction()const Getthecoefficientoffriction.

float32 GetRestitution()const Getthecoefficientofrestitution.

Friends

class b2Bodyclass b2World

DetailedDescription

Ashapeisusedforcollisiondetection.

Shapesarecreatedinb2World.Youcanuseshapeforcollisiondetectionbeforetheyareattachedtotheworld.

Warning:youcannotreuseshapes.


b2ShapeTypeb2Shape::GetType ( ) const[inline]

Getthetypeofthisshape.

Youcanusethistodowncasttotheconcreteshape.

Returns:theshapetype.

boolb2Shape::IsSensor ( ) const[inline]

Isthisshapeasensor(non-solid)?

Returns:thetrueiftheshapeisasensor.

voidb2Shape::SetFilterData ( constb2FilterData& filter ) [inline]

Setthecontactfilteringdata.

Youmustcallb2World::Refiltertocorrectexistingcontacts/non-contacts.

b2Body*b2Shape::GetBody ( ) [inline]

Gettheparentbodyofthisshape.

ThisisNULLiftheshapeisnotattached.

Returns:theparentbody.

b2Shape*b2Shape::GetNext ( ) [inline]

Getthenextshapeintheparentbody'sshapelist.

Returns:thenextshape.

void*b2Shape::GetUserData ( ) [inline]

Gettheuserdatathatwasassignedintheshapedefinition.

Usethistostoreyourapplicationspecificdata.

virtualboolb2Shape::TestPoint ( constb2XForm& xf,constb2Vec2& p

) const[purevirtual]

Testapointforcontainmentinthisshape.

Thisonlyworksforconvexshapes.

Parameters:xf theshapeworldtransform.p apointinworldcoordinates.

Implementedinb2CircleShape,andb2PolygonShape.

virtualboolb2Shape::TestSegment ( constb2XForm& xf,float32* lambda,b2Vec2* normal,constb2Segment& segment,float32 maxLambda


Performaraycastagainstthisshape.

Parameters:

xf theshapeworldtransform.

lambda returnsthehitfraction.Youcanusethistocomputethecontactpointp=(1-lambda)*segment.p1+lambda*segment.p2.

normal returnsthenormalatthecontactpoint.Ifthereisnointersection,thenormalisnotset.

segment definesthebeginandendpointoftheraycast.maxLambda anumbertypicallyintherange[0,1].

Returns:trueiftherewasanintersection.


virtualvoidb2Shape::ComputeAABB ( b2AABB* aabb,constb2XForm& xf


Givenatransform,computetheassociatedaxisalignedboundingboxforthisshape.

Parameters:aabb returnstheaxisalignedbox.xf theworldtransformoftheshape.


virtualvoidb2Shape::ComputeSweptAABB ( b2AABB* aabb,constb2XForm& xf1,constb2XForm& xf2


Giventwotransforms,computetheassociatedsweptaxisalignedboundingboxforthisshape.

Parameters:aabb returnstheaxisalignedbox.xf1 thestartingshapeworldtransform.xf2 theendingshapeworldtransform.


virtualvoidb2Shape::ComputeMass ( b2MassData* massData ) const[purevirtual]

Computethemasspropertiesofthisshapeusingitsdimensionsanddensity.

Theinertiatensoriscomputedaboutthelocalorigin,notthecentroid.

Parameters:massData returnsthemassdataforthisshape.



b2Shape.hb2Shape.cpp



b2ShapeDefStructReferenceAshapedefinitionisusedtoconstructashape.More...

Inheritancediagramforb2ShapeDef:

Listofallmembers.


b2ShapeDef() Theconstructorsetsthedefaultshapedefinitionvalues.

PublicAttributes

b2ShapeType type Holdstheshapetypefordown-casting.

void* userData Usethistostoreapplicationspecifyshapedata.

float32 friction Theshape'sfrictioncoefficient,usuallyintherange[0,1].

float32 restitution Theshape'srestitution(elasticity)usuallyintherange[0,1].

float32 density Theshape'sdensity,usuallyinkg/m^2.

bool isSensor

Asensorshapecollectscontactinformationbutnevergeneratesacollisionresponse.

b2FilterData filter Contactfilteringdata.

DetailedDescription

Ashapedefinitionisusedtoconstructashape.

Thisclassdefinesanabstractshapedefinition.Youcanreuseshapedefinitionssafely.


boolb2ShapeDef::isSensor

Asensorshapecollectscontactinformationbutnevergeneratesacollisionresponse.


b2Shape.h



b2SweepStructReferenceThisdescribesthemotionofabody/shapeforTOIcomputation.More...

Listofallmembers.


void GetXForm(b2XForm*xf,float32t)const Gettheinterpolatedtransformataspecifictime.

void Advance(float32t) Advancethesweepforward,yieldinganewinitialstate.

PublicAttributes

b2Vec2 localCenter localcenterofmassposition

b2Vec2 c centerworldpositions

float32 a worldangles

float32 t0 timeinterval=[t0,1],wheret0isin[0,1]

DetailedDescription

Thisdescribesthemotionofabody/shapeforTOIcomputation.

Shapesaredefinedwithrespecttothebodyorigin,whichmaynocoincidewiththecenterofmass.However,tosupportdynamicswemustinterpolatethecenterofmassposition.


voidb2Sweep::GetXForm ( b2XForm* xf,float32 t

) const

Gettheinterpolatedtransformataspecifictime.

Parameters:t thenormalizedtimein[0,1].

voidb2Sweep::Advance ( float32 t )

Advancethesweepforward,yieldinganewinitialstate.

Parameters:t thenewinitialtime.


b2Math.hb2Math.cpp



b2Vec2StructReferenceA2Dcolumnvector.More...

Listofallmembers.


b2Vec2() Defaultconstructordoesnothing(forperformance).

b2Vec2(float32x,float32y) Constructusingcoordinates.

void SetZero() Setthisvectortoallzeros.

void Set(float32x_,float32y_) Setthisvectortosomespecifiedcoordinates.

b2Vec2 operator-()const Negatethisvector.

void operator+=(constb2Vec2&v) Addavectortothisvector.

void operator-=(constb2Vec2&v) Subtractavectorfromthisvector.

void operator*=(float32a) Multiplythisvectorbyascalar.

float32 Length()const Getthelengthofthisvector(thenorm).

float32 LengthSquared()const Getthelengthsquared.

float32 Normalize() Convertthisvectorintoaunitvector.Returnsthelength.

bool IsValid()const Doesthisvectorcontainfinitecoordinates?

DetailedDescription

A2Dcolumnvector.


float32b2Vec2::LengthSquared ( ) const[inline]

Getthelengthsquared.

Forperformance,usethisinsteadofb2Vec2::Length(ifpossible).


b2Math.h



b2VersionStructReferenceVersionnumberingscheme.More...

Listofallmembers.

PublicAttributes

int32 major significantchanges

int32 minor incrementalchanges

int32 revision bugfixes

DetailedDescription

Versionnumberingscheme.

Seehttp://en.wikipedia.org/wiki/Software_versioning


b2Settings.h


http://en.wikipedia.org/wiki/Software_versioning


b2WorldClassReferenceTheworldclassmanagesallphysicsentities,dynamicsimulation,andasynchronousqueries.More...

Listofallmembers.


b2World(constb2AABB&worldAABB,constb2Vec2&gravity,booldoSleep) Constructaworldobject.

~b2World()

Destructtheworld.Allphysicsentitiesaredestroyedandallheapmemoryisreleased.

void SetDestructionListener(b2DestructionListener*listener) Registeradestructionlistener.

void SetBoundaryListener(b2BoundaryListener*listener) Registerabroad-phaseboundarylistener.

void SetContactFilter(b2ContactFilter*filter) Registeracontactfiltertoprovidespecificcontrolovercollision.

void SetContactListener(b2ContactListener*listener) Registeracontacteventlistener.

void SetDebugDraw(b2DebugDraw*debugDraw) Registeraroutinefordebugdrawing.

b2Body* CreateBody(constb2BodyDef*def) Createarigidbodygivenadefinition.

void DestroyBody(b2Body*body) Destroyarigidbodygivenadefinition.

b2Joint* CreateJoint(constb2JointDef*def) Createajointtoconstrainbodiestogether.

void DestroyJoint(b2Joint*joint) Destroyajoint.

b2Body* GetGroundBody() Theworldprovidesasinglestaticgroundbodywithnocollisionshapes.

void Step(float32timeStep,int32iterations) Takeatimestep.

int32 Query(constb2AABB&aabb,b2Shape**shapes,int32maxCount) QuerytheworldforallshapesthatpotentiallyoverlaptheprovidedAABB.

b2Body* GetBodyList() Gettheworldbodylist.

b2Joint* GetJointList() Gettheworldjointlist.

void Refilter(b2Shape*shape) Re-filterashape.Thisre-runscontactfilteringonashape.

void SetWarmStarting(boolflag) Enable/disablewarmstarting.Fortesting.

void SetPositionCorrection(boolflag) Enable/disablepositioncorrection.Fortesting.

void SetContinuousPhysics(boolflag) Enable/disablecontinuousphysics.Fortesting.

void Validate() Performvalidationofinternaldatastructures.

int32 GetProxyCount()const Getthenumberofbroad-phaseproxies.

int32 GetPairCount()const Getthenumberofbroad-phasepairs.

int32 GetBodyCount()const Getthenumberofbodies.

int32 GetJointCount()const Getthenumberjoints.

int32 GetContactCount()const Getthenumberofcontacts(eachmayhave0ormorecontactpoints).

void SetGravity(constb2Vec2&gravity) Changetheglobalgravityvector.

Friends

class b2Body

DetailedDescription

Theworldclassmanagesallphysicsentities,dynamicsimulation,andasynchronousqueries.

Theworldalsocontainsefficientmemorymanagementfacilities.

Constructor&DestructorDocumentation

b2World::b2World ( constb2AABB& worldAABB,constb2Vec2& gravity,bool doSleep

)

Constructaworldobject.

Parameters:worldAABB aboundingboxthatcompletelyencompassesallyourshapes.gravity theworldgravityvector.doSleep improveperformancebynotsimulatinginactivebodies.


voidb2World::SetContactFilter ( b2ContactFilter* filter )

Registeracontactfiltertoprovidespecificcontrolovercollision.

Otherwisethedefaultfilterisused(b2_defaultFilter).

voidb2World::SetDebugDraw ( b2DebugDraw* debugDraw )

Registeraroutinefordebugdrawing.

Thedebugdrawfunctionsarecalledinsidetheb2World::Stepmethod,somakesureyourrendererisreadytoconsumedrawcommandswhenyoucallStep().

b2Body*b2World::CreateBody ( constb2BodyDef* def )

Createarigidbodygivenadefinition.

Noreferencetothedefinitionisretained.


voidb2World::DestroyBody ( b2Body* body )

Destroyarigidbodygivenadefinition.

Noreferencetothedefinitionisretained.Thisfunctionislockedduringcallbacks.

Warning:Thisautomaticallydeletesallassociatedshapesandjoints.

Thisfunctionislockedduringcallbacks.

b2Joint*b2World::CreateJoint ( constb2JointDef* def )

Createajointtoconstrainbodiestogether.

Noreferencetothedefinitionisretained.Thismaycausetheconnectedbodiestoceasecolliding.


voidb2World::DestroyJoint ( b2Joint* joint )

Destroyajoint.

Thismaycausetheconnectedbodiestobegincolliding.


b2Body*b2World::GetGroundBody ( ) [inline]

Theworldprovidesasinglestaticgroundbodywithnocollisionshapes.

Youcanusethistosimplifythecreationofjointsandstaticshapes.

voidb2World::Step ( float32 timeStep,int32 iterations

)

Takeatimestep.

Thisperformscollisiondetection,integration,andconstraintsolution.

Parameters:timeStep theamountoftimetosimulate,thisshouldnotvary.iterations thenumberofiterationstobeusedbytheconstraintsolver.

int32b2World::Query ( constb2AABB& aabb,b2Shape** shapes,int32 maxCount

)

QuerytheworldforallshapesthatpotentiallyoverlaptheprovidedAABB.

Youprovideashapepointerbufferofspecifiedsize.Thenumberofshapesfoundisreturned.

Parameters:aabb thequerybox.shapes auserallocatedshapepointerarrayofsizemaxCount(orgreater).maxCount thecapacityoftheshapesarray.

Returns:thenumberofshapesfoundinaabb.

b2Body*b2World::GetBodyList ( ) [inline]

Gettheworldbodylist.

Withthereturnedbody,useb2Body::GetNexttogetthenextbodyintheworldlist.ANULLbodyindicatestheendofthelist.

Returns:theheadoftheworldbodylist.

b2Joint*b2World::GetJointList ( ) [inline]

Gettheworldjointlist.

Withthereturnedjoint,useb2Joint::GetNexttogetthenextjointintheworldlist.ANULLjointindicatestheendofthelist.

Returns:theheadoftheworldjointlist.


b2World.hb2World.cpp



b2XFormStructReferenceAtransformcontainstranslationandrotation.More...

Listofallmembers.


b2XForm() Thedefaultconstructordoesnothing(forperformance).

b2XForm(constb2Vec2&position,constb2Mat22&R) Initializeusingapositionvectorandarotationmatrix.

void SetIdentity() Setthistotheidentitytransform.

DetailedDescription

Atransformcontainstranslationandrotation.

Itisusedtorepresentthepositionandorientationofrigidframes.


b2Math.h



Box2DClassHierarchyThisinheritancelistissortedroughly,butnotcompletely,alphabetically:

b2AABBb2Bodyb2BodyDefb2BoundaryListenerb2Colorb2Contactb2ContactEdgeb2ContactFilterb2ContactIDb2ContactID::Featuresb2ContactListenerb2ContactPointb2ContactResultb2DebugDrawb2DestructionListenerb2FilterDatab2Joint

b2DistanceJointb2GearJointb2MouseJointb2PrismaticJointb2PulleyJointb2RevoluteJoint

b2JointDefb2DistanceJointDefb2GearJointDefb2MouseJointDefb2PrismaticJointDefb2PulleyJointDefb2RevoluteJointDef

b2JointEdgeb2Manifoldb2ManifoldPointb2MassData

b2Mat22b2OBBb2Segmentb2Shape

b2CircleShapeb2PolygonShape

b2ShapeDefb2CircleDefb2PolygonDef

b2Sweepb2Vec2b2Versionb2Worldb2XForm





All Functions Variables Enumerator

a b c d e f g i j k l m n o p q r s t u v w x ~

Hereisalistofalldocumentedclassmemberswithlinkstotheclassdocumentationforeachmember:

-a-

a:b2SweepAdd():b2ContactListenerAdvance():b2SweepallowSleep:b2BodyDefAllowSleeping():b2Bodyangle:b2BodyDefangularDamping:b2BodyDefAppendFlags():b2DebugDrawApplyForce():b2BodyApplyImpulse():b2BodyApplyTorque():b2Body




FileList FileMembers

Box2DFileListHereisalistofalldocumentedfileswithbriefdescriptions:b2Collision.h Structuresandfunctionsusedforcomputingcontactpoints,distance

queries,andTOIqueries

b2Settings.h Globaltuningconstantsbasedonmeters-kilograms-seconds(MKS)units



b2Collision.hFileReferenceStructuresandfunctionsusedforcomputingcontactpoints,distancequeries,andTOIqueries.More...

Classes

union b2ContactID Contactidstofacilitatewarmstarting.More...

struct b2ContactID::Features Thefeaturesthatintersecttoformthecontactpoint.More...

struct b2ManifoldPoint Amanifoldpointisacontactpointbelongingtoacontactmanifold.More...

struct b2Manifold Amanifoldfortwotouchingconvexshapes.More...

struct b2Segment Alinesegment.More...

struct b2AABB Anaxisalignedboundingbox.More...

struct b2OBB Anorientedboundingbox.More...

Functions

void b2CollideCircles(b2Manifold*manifold,constb2CircleShape*circle1,constb2XForm&xf1,constb2CircleShape*circle2,constb2XForm&xf2)

Computethecollisionmanifoldbetweentwocircles.

void b2CollidePolygonAndCircle(b2Manifold*manifold,constb2PolygonShape*polygon,constb2XForm&xf1,constb2CircleShape*circle,constb2XForm&xf2)

Computethecollisionmanifoldbetweenapolygonandacircle.

void b2CollidePolygons(b2Manifold*manifold,constb2PolygonShape*polygon1,constb2XForm&xf1,constb2PolygonShape*polygon2,constb2XForm&xf2)

Computethecollisionmanifoldbetweentwocircles.

float32 b2Distance(b2Vec2*x1,b2Vec2*x2,constb2Shape*shape1,constb2XForm&xf1,constb2Shape*shape2,constb2XForm&xf2)

Computethedistancebetweentwoshapesandtheclosestpoints.

float32 b2TimeOfImpact(constb2Shape*shape1,constb2Sweep&sweep1,constb2Shape*shape2,constb2Sweep&sweep2)

Computethetimewhentwoshapesbegintotouchortouchatacloserdistance.

DetailedDescription

Structuresandfunctionsusedforcomputingcontactpoints,distancequeries,andTOIqueries.

FunctionDocumentation

float32b2Distance ( b2Vec2* x1,b2Vec2* x2,constb2Shape* shape1,constb2XForm& xf1,constb2Shape* shape2,constb2XForm& xf2

)

Computethedistancebetweentwoshapesandtheclosestpoints.

Returns:thedistancebetweentheshapesorzeroiftheyareoverlapped/touching.

float32b2TimeOfImpact ( constb2Shape* shape1,constb2Sweep& sweep1,constb2Shape* shape2,constb2Sweep& sweep2

)

Computethetimewhentwoshapesbegintotouchortouchatacloserdistance.

Warning:thesweepsmusthavethesametimeinterval.

Returns:thefractionbetween[0,1]inwhichtheshapesfirsttouch.fraction=0meanstheshapesbegintouching/overlapped,andfraction=1meanstheshapesdon'ttouch.



b2Settings.hFileReferenceGlobaltuningconstantsbasedonmeters-kilograms-seconds(MKS)units.More...

Classes

struct b2Version Versionnumberingscheme.More...

Functions

void* b2Alloc(int32size) Implementthisfunctiontouseyourownmemoryallocator.

void b2Free(void*mem) Ifyouimplementb2Alloc,youshouldalsoimplementthisfunction.

float32 b2MixFriction(float32friction1,float32friction2) Frictionmixinglaw.Feelfreetocustomizethis.

float32 b2MixRestitution(float32restitution1,float32restitution2) Restitutionmixinglaw.Feelfreetocustomizethis.

Variables

constfloat32 b2_linearSlop=0.005f Asmalllengthusedasacollisionandconstrainttolerance.

constfloat32 b2_angularSlop=2.0f/180.0f*b2_pi Asmallangleusedasacollisionandconstrainttolerance.

constfloat32 b2_toiSlop=8.0f*b2_linearSlop Continuouscollisiondetection(CCD)workswithcore,shrunkenshapes.

constint32 b2_maxTOIContactsPerIsland=32 MaximumnumberofcontactstobehandledtosolveaTOIisland.

constfloat32 b2_velocityThreshold=1.0f Avelocitythresholdforelasticcollisions.

constfloat32 b2_maxLinearCorrection=0.2f Themaximumlinearpositioncorrectionusedwhensolvingconstraints.

constfloat32 b2_maxAngularCorrection=8.0f/180.0f*b2_pi Themaximumangularpositioncorrectionusedwhensolvingconstraints.

constfloat32 b2_maxLinearVelocity=200.0f Themaximumlinearvelocityofabody.

constfloat32 b2_maxAngularVelocity=250.0f Themaximumangularvelocityofabody.

constfloat32 b2_contactBaumgarte=0.2f Thisscalefactorcontrolshowfastoverlapisresolved.

constfloat32 b2_timeToSleep=0.5f Thetimethatabodymustbestillbeforeitwillgotosleep.

constfloat32 b2_linearSleepTolerance=0.01f Abodycannotsleepifitslinearvelocityisabovethistolerance.

constfloat32 b2_angularSleepTolerance=2.0f/180.0f Abodycannotsleepifitsangularvelocityisabovethistolerance.

int32 b2_byteCount Thecurrentnumberofbytesallocatedthroughb2Alloc.

b2Version b2_version Currentversion.

DetailedDescription

Globaltuningconstantsbasedonmeters-kilograms-seconds(MKS)units.

VariableDocumentation

constfloat32b2_angularSlop=2.0f/180.0f*b2_pi

Asmallangleusedasacollisionandconstrainttolerance.

Usuallyitischosentobenumericallysignificant,butvisuallyinsignificant.

constfloat32b2_contactBaumgarte=0.2f

Thisscalefactorcontrolshowfastoverlapisresolved.

Ideallythiswouldbe1sothatoverlapisremovedinonetimestep.Howeverusingvaluescloseto1oftenleadtoovershoot.

constfloat32b2_linearSlop=0.005f

Asmalllengthusedasacollisionandconstrainttolerance.

Usuallyitischosentobenumericallysignificant,butvisuallyinsignificant.

constfloat32b2_maxAngularCorrection=8.0f/180.0f*b2_pi

Themaximumangularpositioncorrectionusedwhensolvingconstraints.

Thishelpstopreventovershoot.

constfloat32b2_maxAngularVelocity=250.0f

Themaximumangularvelocityofabody.

Thislimitisverylargeandisusedtopreventnumericalproblems.Youshouldn'tneedtoadjustthis.

constfloat32b2_maxLinearCorrection=0.2f

Themaximumlinearpositioncorrectionusedwhensolvingconstraints.

Thishelpstopreventovershoot.

constfloat32b2_maxLinearVelocity=200.0f

Themaximumlinearvelocityofabody.

Thislimitisverylargeandisusedtopreventnumericalproblems.Youshouldn'tneedtoadjustthis.

constfloat32b2_toiSlop=8.0f*b2_linearSlop

Continuouscollisiondetection(CCD)workswithcore,shrunkenshapes.

ThisistheamountbywhichshapesareautomaticallyshrunktoworkwithCCD.Thismustbelargerthanb2_linearSlop.

constfloat32b2_velocityThreshold=1.0f

Avelocitythresholdforelasticcollisions.

Anycollisionwitharelativelinearvelocitybelowthisthresholdwillbetreatedasinelastic.





All Functions Variables

Hereisalistofalldocumentedfilememberswithlinkstothedocumentation:

b2_angularSleepTolerance:b2Settings.hb2_angularSlop:b2Settings.hb2_byteCount:b2Settings.hb2_contactBaumgarte:b2Settings.hb2_linearSleepTolerance:b2Settings.hb2_linearSlop:b2Settings.hb2_maxAngularCorrection:b2Settings.hb2_maxAngularVelocity:b2Settings.hb2_maxLinearCorrection:b2Settings.hb2_maxLinearVelocity:b2Settings.hb2_maxTOIContactsPerIsland:b2Settings.hb2_timeToSleep:b2Settings.hb2_toiSlop:b2Settings.hb2_velocityThreshold:b2Settings.hb2_version:b2Settings.hb2Alloc():b2Settings.hb2CollideCircles():b2Collision.hb2CollidePolygonAndCircle():b2Collision.hb2CollidePolygons():b2Collision.hb2Distance():b2Collision.hb2Free():b2Settings.hb2MixFriction():b2Settings.hb2MixRestitution():b2Settings.hb2TimeOfImpact():b2Collision.h



Box2DClassIndex

A|B|C|D|F|G|J|M|O|P|R|S|V|W|X

A b2ContactID b2GearJoint Ob2AABB b2ContactID::Features b2GearJointDef b2OBB

B b2ContactListener J Pb2Body b2ContactPoint b2Joint b2PolygonDef b2ShapeDef

b2BodyDef b2ContactResult b2JointDef b2PolygonShape

b2BoundaryListener D b2JointEdge b2PrismaticJoint

C b2DebugDraw M b2PrismaticJointDef

b2CircleDef b2DestructionListener b2Manifold b2PulleyJoint

b2CircleShape b2DistanceJoint b2ManifoldPoint b2PulleyJointDef

b2Color b2DistanceJointDef b2MassData R

b2Contact F b2Mat22 b2RevoluteJoint

b2ContactEdge b2FilterData b2MouseJoint b2RevoluteJointDef

b2ContactFilter G b2MouseJointDef

A|B|C|D|F|G|J|M|O|P|R|S|V|W|X



b2AABBMemberListThisisthecompletelistofmembersforb2AABB,includingallinheritedmembers.

IsValid()const b2AABB [inline]

lowerBound b2AABBupperBound b2AABB



b2BodyMemberListThisisthecompletelistofmembersforb2Body,includingallinheritedmembers.

AllowSleeping(boolflag) b2Body [inline]

ApplyForce(constb2Vec2&force,constb2Vec2&point) b2Body [inline]

ApplyImpulse(constb2Vec2&impulse,constb2Vec2&point) b2Body [inline]

ApplyTorque(float32torque) b2Body [inline]

CreateShape(b2ShapeDef*shapeDef) b2BodyDestroyShape(b2Shape*shape) b2BodyGetAngle()const b2Body [inline]

GetAngularVelocity()const b2Body [inline]

GetInertia()const b2Body [inline]

GetJointList() b2Body [inline]

GetLinearVelocity()const b2Body [inline]

GetLinearVelocityFromLocalPoint(constb2Vec2&localPoint)const b2Body [inline]

GetLinearVelocityFromWorldPoint(constb2Vec2&worldPoint)const b2Body [inline]

GetLocalCenter()const b2Body [inline]

GetLocalPoint(constb2Vec2&worldPoint)const b2Body [inline]

GetLocalVector(constb2Vec2&worldVector)const b2Body [inline]

GetMass()const b2Body [inline]

GetNext() b2Body [inline]

GetPosition()const b2Body [inline]

GetShapeList() b2Body [inline]

GetUserData() b2Body [inline]

GetWorld() b2Body [inline]

GetWorldCenter()const b2Body [inline]

GetWorldPoint(constb2Vec2&localPoint)const b2Body [inline]

GetWorldVector(constb2Vec2&localVector)const b2Body [inline]

GetXForm()const b2Body [inline]

IsBullet()const b2Body [inline]

IsDynamic()const b2Body [inline]

IsFrozen()const b2Body [inline]

IsSleeping()const b2Body [inline]

IsStatic()const b2Body [inline]

PutToSleep() b2Body [inline]

SetAngularVelocity(float32omega) b2Body [inline]

SetBullet(boolflag) b2Body [inline]

SetLinearVelocity(constb2Vec2&v) b2Body [inline]

SetMass(constb2MassData*massData) b2Body

SetMassFromShapes() b2BodySetUserData(void*data) b2Body [inline]

SetXForm(constb2Vec2&position,float32angle) b2BodyWakeUp() b2Body [inline]



b2BodyDefMemberListThisisthecompletelistofmembersforb2BodyDef,includingallinheritedmembers.

allowSleep b2BodyDefangle b2BodyDefangularDamping b2BodyDefb2BodyDef() b2BodyDef [inline]fixedRotation b2BodyDefisBullet b2BodyDefisSleeping b2BodyDeflinearDamping b2BodyDefmassData b2BodyDefposition b2BodyDefuserData b2BodyDef



b2BoundaryListenerMemberListThisisthecompletelistofmembersforb2BoundaryListener,includingallinheritedmembers.

Violation(b2Body*body)=0 b2BoundaryListener [purevirtual]



b2CircleDefMemberListThisisthecompletelistofmembersforb2CircleDef,includingallinheritedmembers.

b2ShapeDef() b2ShapeDef [inline]density b2ShapeDeffilter b2ShapeDeffriction b2ShapeDefisSensor b2ShapeDefrestitution b2ShapeDeftype b2ShapeDefuserData b2ShapeDef



b2CircleShapeMemberListThisisthecompletelistofmembersforb2CircleShape,includingallinheritedmembers.

ComputeAABB(b2AABB*aabb,constb2XForm&transform)const b2CircleShape [virtual]

ComputeMass(b2MassData*massData)const b2CircleShape [virtual]

ComputeSweptAABB(b2AABB*aabb,constb2XForm&transform1,constb2XForm&transform2)const b2CircleShape [virtual]

GetBody() b2Shape [inline]

GetFilterData()const b2Shape [inline]

GetFriction()const b2Shape [inline]

GetLocalPosition()const b2CircleShape [inline]

GetNext() b2Shape [inline]

GetRadius()const b2CircleShape [inline]

GetRestitution()const b2Shape [inline]

GetSweepRadius()const b2Shape [inline]

GetType()const b2Shape [inline]

GetUserData() b2Shape [inline]

IsSensor()const b2Shape [inline]

SetFilterData(constb2FilterData&filter) b2Shape [inline]

SetUserData(void*data) b2Shape [inline]

TestPoint(constb2XForm&transform,constb2Vec2&p)const b2CircleShape [virtual]

TestSegment(constb2XForm&transform,float32*lambda,b2Vec2*normal,constb2Segment&segment,float32maxLambda)const b2CircleShape [virtual]



b2ColorMemberListThisisthecompletelistofmembersforb2Color,includingallinheritedmembers.



b2ContactMemberListThisisthecompletelistofmembersforb2Contact,includingallinheritedmembers.

GetManifoldCount()const b2Contact [inline]GetManifolds()=0 b2Contact [purevirtual]GetNext() b2Contact [inline]GetShape1() b2Contact [inline]GetShape2() b2Contact [inline]IsSolid()const b2Contact [inline]



b2ContactEdgeMemberListThisisthecompletelistofmembersforb2ContactEdge,includingallinheritedmembers.

contact b2ContactEdgenext b2ContactEdgeother b2ContactEdgeprev b2ContactEdge



b2ContactFilterMemberListThisisthecompletelistofmembersforb2ContactFilter,includingallinheritedmembers.

ShouldCollide(b2Shape*shape1,b2Shape*shape2) b2ContactFilter [virtual]



b2ContactIDMemberListThisisthecompletelistofmembersforb2ContactID,includingallinheritedmembers.

key b2ContactID



b2ContactID::FeaturesMemberListThisisthecompletelistofmembersforb2ContactID::Features,includingallinheritedmembers.

flip b2ContactID::FeaturesincidentEdge b2ContactID::FeaturesincidentVertex b2ContactID::FeaturesreferenceEdge b2ContactID::Features



b2ContactListenerMemberListThisisthecompletelistofmembersforb2ContactListener,includingallinheritedmembers.

Add(constb2ContactPoint*point) b2ContactListener [inline,virtual]Persist(constb2ContactPoint*point) b2ContactListener [inline,virtual]Remove(constb2ContactPoint*point) b2ContactListener [inline,virtual]Result(constb2ContactResult*point) b2ContactListener [inline,virtual]



b2ContactPointMemberListThisisthecompletelistofmembersforb2ContactPoint,includingallinheritedmembers.

friction b2ContactPointid b2ContactPointnormal b2ContactPointposition b2ContactPointrestitution b2ContactPointseparation b2ContactPointshape1 b2ContactPointshape2 b2ContactPointvelocity b2ContactPoint



b2ContactResultMemberListThisisthecompletelistofmembersforb2ContactResult,includingallinheritedmembers.

id b2ContactResultnormal b2ContactResultnormalImpulse b2ContactResultposition b2ContactResultshape1 b2ContactResultshape2 b2ContactResulttangentImpulse b2ContactResult



b2DebugDrawMemberListThisisthecompletelistofmembersforb2DebugDraw,includingallinheritedmembers.

AppendFlags(uint32flags) b2DebugDrawClearFlags(uint32flags) b2DebugDrawDrawCircle(constb2Vec2&center,float32radius,constb2Color&color)=0 b2DebugDraw [pure

virtual]

DrawPolygon(constb2Vec2*vertices,int32vertexCount,constb2Color&color)=0 b2DebugDraw [pure

virtual]

DrawSegment(constb2Vec2&p1,constb2Vec2&p2,constb2Color&color)=0 b2DebugDraw [pure

virtual]

DrawSolidCircle(constb2Vec2&center,float32radius,constb2Vec2&axis,constb2Color&color)=0 b2DebugDraw [pure

virtual]

DrawSolidPolygon(constb2Vec2*vertices,int32vertexCount,constb2Color&color)=0 b2DebugDraw [pure

virtual]

DrawXForm(constb2XForm&xf)=0 b2DebugDraw [pure

virtual]

e_aabbBitenumvalue b2DebugDrawe_centerOfMassBitenumvalue b2DebugDrawe_coreShapeBitenumvalue b2DebugDrawe_jointBitenumvalue b2DebugDrawe_obbBitenumvalue b2DebugDrawe_pairBitenumvalue b2DebugDrawe_shapeBitenumvalue b2DebugDrawGetFlags()const b2DebugDrawSetFlags(uint32flags) b2DebugDraw



b2DestructionListenerMemberListThisisthecompletelistofmembersforb2DestructionListener,includingallinheritedmembers.

SayGoodbye(b2Joint*joint)=0 b2DestructionListener [purevirtual]SayGoodbye(b2Shape*shape)=0 b2DestructionListener [purevirtual]



b2DistanceJointMemberListThisisthecompletelistofmembersforb2DistanceJoint,includingallinheritedmembers.

GetAnchor1()const b2DistanceJoint [virtual]GetAnchor2()const b2DistanceJoint [virtual]GetBody1() b2Joint [inline]

GetBody2() b2Joint [inline]

GetNext() b2Joint [inline]

GetReactionForce()const b2DistanceJoint [virtual]GetReactionTorque()const b2DistanceJoint [virtual]GetType()const b2Joint [inline]

GetUserData() b2Joint [inline]

SetUserData(void*data) b2Joint [inline]



b2DistanceJointDefMemberListThisisthecompletelistofmembersforb2DistanceJointDef,includingallinheritedmembers.

body1 b2JointDefbody2 b2JointDefcollideConnected b2JointDefdampingRatio b2DistanceJointDeffrequencyHz b2DistanceJointDefInitialize(b2Body*body1,b2Body*body2,constb2Vec2&anchor1,constb2Vec2&anchor2) b2DistanceJointDef

length b2DistanceJointDeflocalAnchor1 b2DistanceJointDeflocalAnchor2 b2DistanceJointDeftype b2JointDefuserData b2JointDef



b2FilterDataMemberListThisisthecompletelistofmembersforb2FilterData,includingallinheritedmembers.

categoryBits b2FilterDatagroupIndex b2FilterDatamaskBits b2FilterData



b2GearJointMemberListThisisthecompletelistofmembersforb2GearJoint,includingallinheritedmembers.

GetAnchor1()const b2GearJoint [virtual]GetAnchor2()const b2GearJoint [virtual]GetBody1() b2Joint [inline]



GetRatio()const b2GearJointGetReactionForce()const b2GearJoint [virtual]GetReactionTorque()const b2GearJoint [virtual]GetType()const b2Joint [inline]





b2GearJointDefMemberListThisisthecompletelistofmembersforb2GearJointDef,includingallinheritedmembers.

body1 b2JointDefbody2 b2JointDefcollideConnected b2JointDefjoint1 b2GearJointDefjoint2 b2GearJointDefratio b2GearJointDeftype b2JointDefuserData b2JointDef



b2JointMemberListThisisthecompletelistofmembersforb2Joint,includingallinheritedmembers.

GetAnchor1()const=0 b2Joint [purevirtual]GetAnchor2()const=0 b2Joint [purevirtual]GetBody1() b2Joint [inline]GetBody2() b2Joint [inline]GetNext() b2Joint [inline]GetReactionForce()const=0 b2Joint [purevirtual]GetReactionTorque()const=0 b2Joint [purevirtual]GetType()const b2Joint [inline]GetUserData() b2Joint [inline]SetUserData(void*data) b2Joint [inline]



b2JointDefMemberListThisisthecompletelistofmembersforb2JointDef,includingallinheritedmembers.

body1 b2JointDefbody2 b2JointDefcollideConnected b2JointDeftype b2JointDefuserData b2JointDef



b2JointEdgeMemberListThisisthecompletelistofmembersforb2JointEdge,includingallinheritedmembers.

joint b2JointEdgenext b2JointEdgeother b2JointEdgeprev b2JointEdge



b2ManifoldMemberListThisisthecompletelistofmembersforb2Manifold,includingallinheritedmembers.

normal b2ManifoldpointCount b2Manifoldpoints b2Manifold



b2ManifoldPointMemberListThisisthecompletelistofmembersforb2ManifoldPoint,includingallinheritedmembers.

id b2ManifoldPointlocalPoint1 b2ManifoldPointlocalPoint2 b2ManifoldPointnormalImpulse b2ManifoldPointseparation b2ManifoldPointtangentImpulse b2ManifoldPoint



b2MassDataMemberListThisisthecompletelistofmembersforb2MassData,includingallinheritedmembers.

center b2MassDataI b2MassDatamass b2MassData



b2Mat22MemberListThisisthecompletelistofmembersforb2Mat22,includingallinheritedmembers.

b2Mat22() b2Mat22 [inline]

b2Mat22(constb2Vec2&c1,constb2Vec2&c2) b2Mat22 [inline]

b2Mat22(float32a11,float32a12,float32a21,float32a22) b2Mat22 [inline]

b2Mat22(float32angle) b2Mat22 [inline,explicit]

GetAngle()const b2Mat22 [inline]

Set(constb2Vec2&c1,constb2Vec2&c2) b2Mat22 [inline]

Set(float32angle) b2Mat22 [inline]

SetIdentity() b2Mat22 [inline]

SetZero() b2Mat22 [inline]

Solve(constb2Vec2&b)const b2Mat22 [inline]



b2MouseJointMemberListThisisthecompletelistofmembersforb2MouseJoint,includingallinheritedmembers.

GetAnchor1()const b2MouseJoint [virtual]GetAnchor2()const b2MouseJoint [virtual]GetBody1() b2Joint [inline]



GetReactionForce()const b2MouseJoint [virtual]GetReactionTorque()const b2MouseJoint [virtual]GetType()const b2Joint [inline]


SetTarget(constb2Vec2&target) b2MouseJointSetUserData(void*data) b2Joint [inline]



b2MouseJointDefMemberListThisisthecompletelistofmembersforb2MouseJointDef,includingallinheritedmembers.

body1 b2JointDefbody2 b2JointDefcollideConnected b2JointDefdampingRatio b2MouseJointDeffrequencyHz b2MouseJointDefmaxForce b2MouseJointDeftarget b2MouseJointDeftimeStep b2MouseJointDeftype b2JointDefuserData b2JointDef



b2OBBMemberListThisisthecompletelistofmembersforb2OBB,includingallinheritedmembers.

center b2OBBextents b2OBBR b2OBB



b2PolygonDefMemberListThisisthecompletelistofmembersforb2PolygonDef,includingallinheritedmembers.

b2ShapeDef() b2ShapeDef [inline]

density b2ShapeDeffilter b2ShapeDeffriction b2ShapeDefisSensor b2ShapeDefrestitution b2ShapeDefSetAsBox(float32hx,float32hy) b2PolygonDefSetAsBox(float32hx,float32hy,constb2Vec2&center,float32angle) b2PolygonDeftype b2ShapeDefuserData b2ShapeDefvertexCount b2PolygonDefvertices b2PolygonDef



b2PolygonShapeMemberListThisisthecompletelistofmembersforb2PolygonShape,includingallinheritedmembers.

Centroid(constb2XForm&xf)const b2PolygonShapeComputeAABB(b2AABB*aabb,constb2XForm&transform)const b2PolygonShape [virtual]

ComputeMass(b2MassData*massData)const b2PolygonShape [virtual]

ComputeSweptAABB(b2AABB*aabb,constb2XForm&transform1,constb2XForm&transform2)const b2PolygonShape [virtual]


GetCentroid()const b2PolygonShape [inline]

GetCoreVertices()const b2PolygonShape [inline]


GetFirstVertex(constb2XForm&xf)const b2PolygonShape [inline]



GetNormals()const b2PolygonShape [inline]

GetOBB()const b2PolygonShape [inline]





GetVertexCount()const b2PolygonShape [inline]

GetVertices()const b2PolygonShape [inline]




Support(constb2XForm&xf,constb2Vec2&d)const b2PolygonShapeTestPoint(constb2XForm&transform,constb2Vec2&p)const b2PolygonShape [virtual]

TestSegment(constb2XForm&transform,float32*lambda,b2Vec2*normal,constb2Segment&segment,float32maxLambda)const b2PolygonShape [virtual]



b2PrismaticJointMemberListThisisthecompletelistofmembersforb2PrismaticJoint,includingallinheritedmembers.

EnableLimit(boolflag) b2PrismaticJointEnableMotor(boolflag) b2PrismaticJointGetAnchor1()const b2PrismaticJoint [virtual]GetAnchor2()const b2PrismaticJoint [virtual]GetBody1() b2Joint [inline]


GetJointSpeed()const b2PrismaticJointGetJointTranslation()const b2PrismaticJointGetLowerLimit()const b2PrismaticJointGetMotorForce()const b2PrismaticJointGetMotorSpeed()const b2PrismaticJoint [inline]GetNext() b2Joint [inline]

GetReactionForce()const b2PrismaticJoint [virtual]GetReactionTorque()const b2PrismaticJoint [virtual]GetType()const b2Joint [inline]

GetUpperLimit()const b2PrismaticJointGetUserData() b2Joint [inline]

IsLimitEnabled()const b2PrismaticJointIsMotorEnabled()const b2PrismaticJointSetLimits(float32lower,float32upper) b2PrismaticJointSetMaxMotorForce(float32force) b2PrismaticJointSetMotorSpeed(float32speed) b2PrismaticJointSetUserData(void*data) b2Joint [inline]



b2PrismaticJointDefMemberListThisisthecompletelistofmembersforb2PrismaticJointDef,includingallinheritedmembers.

body1 b2JointDefbody2 b2JointDefcollideConnected b2JointDefenableLimit b2PrismaticJointDefenableMotor b2PrismaticJointDefInitialize(b2Body*body1,b2Body*body2,constb2Vec2&anchor,constb2Vec2&axis) b2PrismaticJointDef

localAnchor1 b2PrismaticJointDeflocalAnchor2 b2PrismaticJointDeflocalAxis1 b2PrismaticJointDeflowerTranslation b2PrismaticJointDefmaxMotorForce b2PrismaticJointDefmotorSpeed b2PrismaticJointDefreferenceAngle b2PrismaticJointDeftype b2JointDefupperTranslation b2PrismaticJointDefuserData b2JointDef



b2PulleyJointMemberListThisisthecompletelistofmembersforb2PulleyJoint,includingallinheritedmembers.

GetAnchor1()const b2PulleyJoint [virtual]GetAnchor2()const b2PulleyJoint [virtual]GetBody1() b2Joint [inline]


GetGroundAnchor1()const b2PulleyJointGetGroundAnchor2()const b2PulleyJointGetLength1()const b2PulleyJointGetLength2()const b2PulleyJointGetNext() b2Joint [inline]

GetRatio()const b2PulleyJointGetReactionForce()const b2PulleyJoint [virtual]GetReactionTorque()const b2PulleyJoint [virtual]GetType()const b2Joint [inline]





b2PulleyJointDefMemberListThisisthecompletelistofmembersforb2PulleyJointDef,includingallinheritedmembers.

body1 b2JointDefbody2 b2JointDefcollideConnected b2JointDefgroundAnchor1 b2PulleyJointDefgroundAnchor2 b2PulleyJointDefInitialize(b2Body*body1,b2Body*body2,constb2Vec2&groundAnchor1,constb2Vec2&groundAnchor2,constb2Vec2&anchor1,constb2Vec2&anchor2,float32ratio)

b2PulleyJointDef

length1 b2PulleyJointDeflength2 b2PulleyJointDeflocalAnchor1 b2PulleyJointDeflocalAnchor2 b2PulleyJointDefmaxLength1 b2PulleyJointDefmaxLength2 b2PulleyJointDefratio b2PulleyJointDeftype b2JointDefuserData b2JointDef



b2RevoluteJointMemberListThisisthecompletelistofmembersforb2RevoluteJoint,includingallinheritedmembers.

EnableLimit(boolflag) b2RevoluteJointEnableMotor(boolflag) b2RevoluteJointGetAnchor1()const b2RevoluteJoint [virtual]GetAnchor2()const b2RevoluteJoint [virtual]GetBody1() b2Joint [inline]


GetJointAngle()const b2RevoluteJointGetJointSpeed()const b2RevoluteJointGetLowerLimit()const b2RevoluteJointGetMotorSpeed()const b2RevoluteJoint [inline]GetMotorTorque()const b2RevoluteJointGetNext() b2Joint [inline]

GetReactionForce()const b2RevoluteJoint [virtual]GetReactionTorque()const b2RevoluteJoint [virtual]GetType()const b2Joint [inline]

GetUpperLimit()const b2RevoluteJointGetUserData() b2Joint [inline]

IsLimitEnabled()const b2RevoluteJointIsMotorEnabled()const b2RevoluteJointSetLimits(float32lower,float32upper) b2RevoluteJointSetMaxMotorTorque(float32torque) b2RevoluteJointSetMotorSpeed(float32speed) b2RevoluteJointSetUserData(void*data) b2Joint [inline]



b2RevoluteJointDefMemberListThisisthecompletelistofmembersforb2RevoluteJointDef,includingallinheritedmembers.

body1 b2JointDefbody2 b2JointDefcollideConnected b2JointDefenableLimit b2RevoluteJointDefenableMotor b2RevoluteJointDefInitialize(b2Body*body1,b2Body*body2,constb2Vec2&anchor) b2RevoluteJointDeflocalAnchor1 b2RevoluteJointDeflocalAnchor2 b2RevoluteJointDeflowerAngle b2RevoluteJointDefmaxMotorTorque b2RevoluteJointDefmotorSpeed b2RevoluteJointDefreferenceAngle b2RevoluteJointDeftype b2JointDefupperAngle b2RevoluteJointDefuserData b2JointDef



b2SegmentMemberListThisisthecompletelistofmembersforb2Segment,includingallinheritedmembers.

p1 b2Segmentp2 b2SegmentTestSegment(float32*lambda,b2Vec2*normal,constb2Segment&segment,float32maxLambda)const b2Segment



b2ShapeMemberListThisisthecompletelistofmembersforb2Shape,includingallinheritedmembers.

ComputeAABB(b2AABB*aabb,constb2XForm&xf)const=0 b2Shape [pure

virtual]

ComputeMass(b2MassData*massData)const=0 b2Shape [pure

virtual]

ComputeSweptAABB(b2AABB*aabb,constb2XForm&xf1,constb2XForm&xf2)const=0 b2Shape [pure

virtual]












TestPoint(constb2XForm&xf,constb2Vec2&p)const=0 b2Shape [pure

virtual]

TestSegment(constb2XForm&xf,float32*lambda,b2Vec2*normal,constb2Segment&segment,float32maxLambda)const=0 b2Shape [pure

virtual]



b2ShapeDefMemberListThisisthecompletelistofmembersforb2ShapeDef,includingallinheritedmembers.

b2ShapeDef() b2ShapeDef [inline]density b2ShapeDeffilter b2ShapeDeffriction b2ShapeDefisSensor b2ShapeDefrestitution b2ShapeDeftype b2ShapeDefuserData b2ShapeDef



b2SweepMemberListThisisthecompletelistofmembersforb2Sweep,includingallinheritedmembers.

a b2SweepAdvance(float32t) b2Sweepc b2SweepGetXForm(b2XForm*xf,float32t)const b2SweeplocalCenter b2Sweept0 b2Sweep



b2Vec2MemberListThisisthecompletelistofmembersforb2Vec2,includingallinheritedmembers.

b2Vec2() b2Vec2 [inline]

b2Vec2(float32x,float32y) b2Vec2 [inline]

IsValid()const b2Vec2 [inline]

Length()const b2Vec2 [inline]

LengthSquared()const b2Vec2 [inline]

Normalize() b2Vec2 [inline]

operator*=(float32a) b2Vec2 [inline]

operator+=(constb2Vec2&v) b2Vec2 [inline]

operator-()const b2Vec2 [inline]

operator-=(constb2Vec2&v) b2Vec2 [inline]

Set(float32x_,float32y_) b2Vec2 [inline]

SetZero() b2Vec2 [inline]



b2VersionMemberListThisisthecompletelistofmembersforb2Version,includingallinheritedmembers.

major b2Versionminor b2Versionrevision b2Version



b2WorldMemberListThisisthecompletelistofmembersforb2World,includingallinheritedmembers.

b2World(constb2AABB&worldAABB,constb2Vec2&gravity,booldoSleep) b2WorldCreateBody(constb2BodyDef*def) b2WorldCreateJoint(constb2JointDef*def) b2WorldDestroyBody(b2Body*body) b2WorldDestroyJoint(b2Joint*joint) b2WorldGetBodyCount()const b2World [inline]

GetBodyList() b2World [inline]

GetContactCount()const b2World [inline]

GetGroundBody() b2World [inline]

GetJointCount()const b2World [inline]

GetJointList() b2World [inline]

GetPairCount()const b2WorldGetProxyCount()const b2WorldQuery(constb2AABB&aabb,b2Shape**shapes,int32maxCount) b2WorldRefilter(b2Shape*shape) b2WorldSetBoundaryListener(b2BoundaryListener*listener) b2WorldSetContactFilter(b2ContactFilter*filter) b2WorldSetContactListener(b2ContactListener*listener) b2WorldSetContinuousPhysics(boolflag) b2World [inline]

SetDebugDraw(b2DebugDraw*debugDraw) b2WorldSetDestructionListener(b2DestructionListener*listener) b2WorldSetGravity(constb2Vec2&gravity) b2World [inline]

SetPositionCorrection(boolflag) b2World [inline]

SetWarmStarting(boolflag) b2World [inline]

Step(float32timeStep,int32iterations) b2WorldValidate() b2World~b2World() b2World



b2XFormMemberListThisisthecompletelistofmembersforb2XForm,includingallinheritedmembers.

b2XForm() b2XForm [inline]

b2XForm(constb2Vec2&position,constb2Mat22&R) b2XForm [inline]

SetIdentity() b2XForm [inline]






a b c d e g i l m n o p q r s t v w x ~

-a-

Add():b2ContactListenerAdvance():b2SweepAllowSleeping():b2BodyAppendFlags():b2DebugDrawApplyForce():b2BodyApplyImpulse():b2BodyApplyTorque():b2Body






a b c d e f g i j k l m n o p r s t u v

-a-

a:b2SweepallowSleep:b2BodyDefangle:b2BodyDefangularDamping:b2BodyDef

-b-

body1:b2JointDefbody2:b2JointDef

-c-

c:b2SweepcategoryBits:b2FilterDatacenter:b2MassData,b2OBBcollideConnected:b2JointDefcontact:b2ContactEdge

-d-

dampingRatio:b2DistanceJointDef,b2MouseJointDefdensity:b2ShapeDef

-e-

enableLimit:b2PrismaticJointDef,b2RevoluteJointDefenableMotor:b2RevoluteJointDef,b2PrismaticJointDefextents:b2OBB

-f-

filter:b2ShapeDeffixedRotation:b2BodyDefflip:b2ContactID::FeaturesfrequencyHz:b2MouseJointDef,b2DistanceJointDeffriction:b2ShapeDef,b2ContactPoint

-g-

groundAnchor1:b2PulleyJointDefgroundAnchor2:b2PulleyJointDefgroupIndex:b2FilterData

-i-

I:b2MassDataid:b2ManifoldPoint,b2ContactResult,b2ContactPointincidentEdge:b2ContactID::FeaturesincidentVertex:b2ContactID::FeaturesisBullet:b2BodyDefisSensor:b2ShapeDefisSleeping:b2BodyDef

-j-

joint:b2JointEdgejoint1:b2GearJointDefjoint2:b2GearJointDef

-k-

key:b2ContactID

-l-

length:b2DistanceJointDeflength1:b2PulleyJointDeflength2:b2PulleyJointDeflinearDamping:b2BodyDeflocalAnchor1:b2RevoluteJointDef,b2DistanceJointDef,b2PrismaticJointDef,b2PulleyJointDef

localAnchor2:b2DistanceJointDef,b2PrismaticJointDef,b2PulleyJointDef,b2RevoluteJointDeflocalAxis1:b2PrismaticJointDeflocalCenter:b2SweeplocalPoint1:b2ManifoldPointlocalPoint2:b2ManifoldPointlowerAngle:b2RevoluteJointDeflowerBound:b2AABBlowerTranslation:b2PrismaticJointDef

-m-

major:b2VersionmaskBits:b2FilterDatamass:b2MassDatamassData:b2BodyDefmaxForce:b2MouseJointDefmaxLength1:b2PulleyJointDefmaxLength2:b2PulleyJointDefmaxMotorForce:b2PrismaticJointDefmaxMotorTorque:b2RevoluteJointDefminor:b2VersionmotorSpeed:b2RevoluteJointDef,b2PrismaticJointDef

-n-

next:b2ContactEdge,b2JointEdgenormal:b2ContactPoint,b2ContactResult,b2ManifoldnormalImpulse:b2ContactResult,b2ManifoldPoint

-o-

other:b2ContactEdge,b2JointEdge

-p-

p1:b2Segmentp2:b2SegmentpointCount:b2Manifoldpoints:b2Manifold

position:b2ContactResult,b2BodyDef,b2ContactPointprev:b2JointEdge,b2ContactEdge

-r-

R:b2OBBratio:b2GearJointDef,b2PulleyJointDefreferenceAngle:b2PrismaticJointDef,b2RevoluteJointDefreferenceEdge:b2ContactID::Featuresrestitution:b2ContactPoint,b2ShapeDefrevision:b2Version

-s-

separation:b2ManifoldPoint,b2ContactPointshape1:b2ContactResult,b2ContactPointshape2:b2ContactResult,b2ContactPoint

-t-

t0:b2SweeptangentImpulse:b2ManifoldPoint,b2ContactResulttarget:b2MouseJointDeftimeStep:b2MouseJointDeftype:b2ShapeDef,b2JointDef

-u-

upperAngle:b2RevoluteJointDefupperBound:b2AABBupperTranslation:b2PrismaticJointDefuserData:b2ShapeDef,b2BodyDef,b2JointDef

-v-

velocity:b2ContactPointvertexCount:b2PolygonDefvertices:b2PolygonDef




e_aabbBit:b2DebugDrawe_centerOfMassBit:b2DebugDrawe_coreShapeBit:b2DebugDrawe_jointBit:b2DebugDrawe_obbBit:b2DebugDrawe_pairBit:b2DebugDrawe_shapeBit:b2DebugDraw








-b-

b2BodyDef():b2BodyDefbody1:b2JointDefbody2:b2JointDef








-c-

c:b2SweepcategoryBits:b2FilterDatacenter:b2MassData,b2OBBCentroid():b2PolygonShapeClearFlags():b2DebugDrawcollideConnected:b2JointDefComputeAABB():b2CircleShape,b2PolygonShape,b2ShapeComputeMass():b2CircleShape,b2PolygonShape,b2ShapeComputeSweptAABB():b2Shape,b2PolygonShape,b2CircleShapecontact:b2ContactEdgeCreateBody():b2WorldCreateJoint():b2WorldCreateShape():b2Body








-d-

dampingRatio:b2DistanceJointDef,b2MouseJointDefdensity:b2ShapeDefDestroyBody():b2WorldDestroyJoint():b2WorldDestroyShape():b2BodyDrawCircle():b2DebugDrawDrawPolygon():b2DebugDrawDrawSegment():b2DebugDrawDrawSolidCircle():b2DebugDrawDrawSolidPolygon():b2DebugDrawDrawXForm():b2DebugDraw








-e-

e_aabbBit:b2DebugDrawe_centerOfMassBit:b2DebugDrawe_coreShapeBit:b2DebugDrawe_jointBit:b2DebugDrawe_obbBit:b2DebugDrawe_pairBit:b2DebugDrawe_shapeBit:b2DebugDrawenableLimit:b2PrismaticJointDef,b2RevoluteJointDefEnableLimit():b2PrismaticJoint,b2RevoluteJointEnableMotor():b2RevoluteJointenableMotor:b2RevoluteJointDefEnableMotor():b2PrismaticJointenableMotor:b2PrismaticJointDefextents:b2OBB








-f-

filter:b2ShapeDeffixedRotation:b2BodyDefflip:b2ContactID::FeaturesfrequencyHz:b2MouseJointDef,b2DistanceJointDeffriction:b2ShapeDef,b2ContactPoint








-g-

GetAnchor1():b2DistanceJoint,b2GearJoint,b2MouseJoint,b2PrismaticJoint,b2Joint,b2PulleyJoint,b2RevoluteJointGetAnchor2():b2DistanceJoint,b2GearJoint,b2Joint,b2MouseJoint,b2PrismaticJoint,b2PulleyJoint,b2RevoluteJointGetAngle():b2Body,b2Mat22GetAngularVelocity():b2BodyGetBody():b2ShapeGetBody1():b2JointGetBody2():b2JointGetBodyCount():b2WorldGetBodyList():b2WorldGetCentroid():b2PolygonShapeGetContactCount():b2WorldGetCoreVertices():b2PolygonShapeGetFilterData():b2ShapeGetFirstVertex():b2PolygonShapeGetFlags():b2DebugDrawGetFriction():b2ShapeGetGroundAnchor1():b2PulleyJointGetGroundAnchor2():b2PulleyJointGetGroundBody():b2WorldGetInertia():b2BodyGetJointAngle():b2RevoluteJointGetJointCount():b2WorldGetJointList():b2Body,b2WorldGetJointSpeed():b2PrismaticJoint,b2RevoluteJointGetJointTranslation():b2PrismaticJointGetLength1():b2PulleyJoint

GetLength2():b2PulleyJointGetLinearVelocity():b2BodyGetLinearVelocityFromLocalPoint():b2BodyGetLinearVelocityFromWorldPoint():b2BodyGetLocalCenter():b2BodyGetLocalPoint():b2BodyGetLocalPosition():b2CircleShapeGetLocalVector():b2BodyGetLowerLimit():b2PrismaticJoint,b2RevoluteJointGetManifoldCount():b2ContactGetManifolds():b2ContactGetMass():b2BodyGetMotorForce():b2PrismaticJointGetMotorSpeed():b2PrismaticJoint,b2RevoluteJointGetMotorTorque():b2RevoluteJointGetNext():b2Shape,b2Body,b2Contact,b2JointGetNormals():b2PolygonShapeGetOBB():b2PolygonShapeGetPairCount():b2WorldGetPosition():b2BodyGetProxyCount():b2WorldGetRadius():b2CircleShapeGetRatio():b2GearJoint,b2PulleyJointGetReactionForce():b2PulleyJoint,b2PrismaticJoint,b2GearJoint,b2MouseJoint,b2Joint,b2RevoluteJoint,b2DistanceJointGetReactionTorque():b2PrismaticJoint,b2Joint,b2MouseJoint,b2RevoluteJoint,b2PulleyJoint,b2DistanceJoint,b2GearJointGetRestitution():b2ShapeGetShape1():b2ContactGetShape2():b2ContactGetShapeList():b2BodyGetSweepRadius():b2ShapeGetType():b2Joint,b2ShapeGetUpperLimit():b2PrismaticJoint,b2RevoluteJointGetUserData():b2Body,b2Shape,b2JointGetVertexCount():b2PolygonShapeGetVertices():b2PolygonShape

GetWorld():b2BodyGetWorldCenter():b2BodyGetWorldPoint():b2BodyGetWorldVector():b2BodyGetXForm():b2Sweep,b2BodygroundAnchor1:b2PulleyJointDefgroundAnchor2:b2PulleyJointDefgroupIndex:b2FilterData








-i-

I:b2MassDataid:b2ManifoldPoint,b2ContactResult,b2ContactPointincidentEdge:b2ContactID::FeaturesincidentVertex:b2ContactID::FeaturesInitialize():b2PrismaticJointDef,b2PulleyJointDef,b2RevoluteJointDef,b2DistanceJointDefIsBullet():b2BodyisBullet:b2BodyDefIsDynamic():b2BodyIsFrozen():b2BodyIsLimitEnabled():b2RevoluteJoint,b2PrismaticJointIsMotorEnabled():b2PrismaticJoint,b2RevoluteJointIsSensor():b2ShapeisSensor:b2ShapeDefIsSleeping():b2BodyisSleeping:b2BodyDefIsSolid():b2ContactIsStatic():b2BodyIsValid():b2Vec2,b2AABB








-j-

joint:b2JointEdgejoint1:b2GearJointDefjoint2:b2GearJointDef








-k-

key:b2ContactID








-l-

length:b2DistanceJointDefLength():b2Vec2length1:b2PulleyJointDeflength2:b2PulleyJointDefLengthSquared():b2Vec2linearDamping:b2BodyDeflocalAnchor1:b2PrismaticJointDef,b2PulleyJointDef,b2RevoluteJointDef,b2DistanceJointDeflocalAnchor2:b2DistanceJointDef,b2PulleyJointDef,b2PrismaticJointDef,b2RevoluteJointDeflocalAxis1:b2PrismaticJointDeflocalCenter:b2SweeplocalPoint1:b2ManifoldPointlocalPoint2:b2ManifoldPointlowerAngle:b2RevoluteJointDeflowerBound:b2AABBlowerTranslation:b2PrismaticJointDef








-m-

b2Mat22():b2Mat22major:b2VersionmaskBits:b2FilterDatamass:b2MassDatamassData:b2BodyDefmaxForce:b2MouseJointDefmaxLength1:b2PulleyJointDefmaxLength2:b2PulleyJointDefmaxMotorForce:b2PrismaticJointDefmaxMotorTorque:b2RevoluteJointDefminor:b2VersionmotorSpeed:b2RevoluteJointDef,b2PrismaticJointDef








-n-

next:b2ContactEdge,b2JointEdgenormal:b2ContactPoint,b2ContactResult,b2ManifoldnormalImpulse:b2ManifoldPoint,b2ContactResultNormalize():b2Vec2








-o-

operator*=():b2Vec2operator+=():b2Vec2operator-():b2Vec2operator-=():b2Vec2other:b2ContactEdge,b2JointEdge








-p-

p1:b2Segmentp2:b2SegmentPersist():b2ContactListenerpointCount:b2Manifoldpoints:b2Manifoldposition:b2ContactPoint,b2ContactResult,b2BodyDefprev:b2JointEdge,b2ContactEdgePutToSleep():b2Body








-q-

Query():b2World








-r-

R:b2OBBratio:b2GearJointDef,b2PulleyJointDefreferenceAngle:b2PrismaticJointDef,b2RevoluteJointDefreferenceEdge:b2ContactID::FeaturesRefilter():b2WorldRemove():b2ContactListenerrestitution:b2ContactPoint,b2ShapeDefResult():b2ContactListenerrevision:b2Version








-s-

b2ShapeDef():b2ShapeDefSayGoodbye():b2DestructionListenerseparation:b2ContactPoint,b2ManifoldPointSet():b2Vec2,b2Mat22SetAngularVelocity():b2BodySetAsBox():b2PolygonDefSetBoundaryListener():b2WorldSetBullet():b2BodySetContactFilter():b2WorldSetContactListener():b2WorldSetContinuousPhysics():b2WorldSetDebugDraw():b2WorldSetDestructionListener():b2WorldSetFilterData():b2ShapeSetFlags():b2DebugDrawSetGravity():b2WorldSetIdentity():b2Mat22,b2XFormSetLimits():b2PrismaticJoint,b2RevoluteJointSetLinearVelocity():b2BodySetMass():b2BodySetMassFromShapes():b2BodySetMaxMotorForce():b2PrismaticJointSetMaxMotorTorque():b2RevoluteJointSetMotorSpeed():b2RevoluteJoint,b2PrismaticJointSetPositionCorrection():b2WorldSetTarget():b2MouseJointSetUserData():b2Shape,b2Joint,b2BodySetWarmStarting():b2WorldSetXForm():b2Body

SetZero():b2Vec2,b2Mat22shape1:b2ContactPoint,b2ContactResultshape2:b2ContactResult,b2ContactPointShouldCollide():b2ContactFilterSolve():b2Mat22Step():b2WorldSupport():b2PolygonShape








-t-

t0:b2SweeptangentImpulse:b2ManifoldPoint,b2ContactResulttarget:b2MouseJointDefTestPoint():b2CircleShape,b2PolygonShape,b2ShapeTestSegment():b2Shape,b2Segment,b2PolygonShape,b2CircleShapetimeStep:b2MouseJointDeftype:b2ShapeDef,b2JointDef








-u-

upperAngle:b2RevoluteJointDefupperBound:b2AABBupperTranslation:b2PrismaticJointDefuserData:b2ShapeDef,b2BodyDef,b2JointDef








-v-

b2Vec2():b2Vec2Validate():b2Worldvelocity:b2ContactPointvertexCount:b2PolygonDefvertices:b2PolygonDefViolation():b2BoundaryListener








-w-

b2World():b2WorldWakeUp():b2Body








-x-

b2XForm():b2XForm








-~-

~b2World():b2World






b2Alloc():b2Settings.hb2CollideCircles():b2Collision.hb2CollidePolygonAndCircle():b2Collision.hb2CollidePolygons():b2Collision.hb2Distance():b2Collision.hb2Free():b2Settings.hb2MixFriction():b2Settings.hb2MixRestitution():b2Settings.hb2TimeOfImpact():b2Collision.h






b2_angularSleepTolerance:b2Settings.hb2_angularSlop:b2Settings.hb2_byteCount:b2Settings.hb2_contactBaumgarte:b2Settings.hb2_linearSleepTolerance:b2Settings.hb2_linearSlop:b2Settings.hb2_maxAngularCorrection:b2Settings.hb2_maxAngularVelocity:b2Settings.hb2_maxLinearCorrection:b2Settings.hb2_maxLinearVelocity:b2Settings.hb2_maxTOIContactsPerIsland:b2Settings.hb2_timeToSleep:b2Settings.hb2_toiSlop:b2Settings.hb2_velocityThreshold:b2Settings.hb2_version:b2Settings.h







-b-

b2BodyDef():b2BodyDef







-c-

Centroid():b2PolygonShapeClearFlags():b2DebugDrawComputeAABB():b2PolygonShape,b2Shape,b2CircleShapeComputeMass():b2Shape,b2CircleShape,b2PolygonShapeComputeSweptAABB():b2CircleShape,b2PolygonShape,b2ShapeCreateBody():b2WorldCreateJoint():b2WorldCreateShape():b2Body







-d-

DestroyBody():b2WorldDestroyJoint():b2WorldDestroyShape():b2BodyDrawCircle():b2DebugDrawDrawPolygon():b2DebugDrawDrawSegment():b2DebugDrawDrawSolidCircle():b2DebugDrawDrawSolidPolygon():b2DebugDrawDrawXForm():b2DebugDraw







-e-

EnableLimit():b2PrismaticJoint,b2RevoluteJointEnableMotor():b2PrismaticJoint,b2RevoluteJoint







-g-

GetAnchor1():b2DistanceJoint,b2GearJoint,b2MouseJoint,b2PrismaticJoint,b2Joint,b2PulleyJoint,b2RevoluteJointGetAnchor2():b2DistanceJoint,b2GearJoint,b2Joint,b2MouseJoint,b2PrismaticJoint,b2PulleyJoint,b2RevoluteJointGetAngle():b2Body,b2Mat22GetAngularVelocity():b2BodyGetBody():b2ShapeGetBody1():b2JointGetBody2():b2JointGetBodyCount():b2WorldGetBodyList():b2WorldGetCentroid():b2PolygonShapeGetContactCount():b2WorldGetCoreVertices():b2PolygonShapeGetFilterData():b2ShapeGetFirstVertex():b2PolygonShapeGetFlags():b2DebugDrawGetFriction():b2ShapeGetGroundAnchor1():b2PulleyJointGetGroundAnchor2():b2PulleyJointGetGroundBody():b2WorldGetInertia():b2BodyGetJointAngle():b2RevoluteJointGetJointCount():b2WorldGetJointList():b2Body,b2WorldGetJointSpeed():b2PrismaticJoint,b2RevoluteJointGetJointTranslation():b2PrismaticJointGetLength1():b2PulleyJointGetLength2():b2PulleyJoint

GetLinearVelocity():b2BodyGetLinearVelocityFromLocalPoint():b2BodyGetLinearVelocityFromWorldPoint():b2BodyGetLocalCenter():b2BodyGetLocalPoint():b2BodyGetLocalPosition():b2CircleShapeGetLocalVector():b2BodyGetLowerLimit():b2PrismaticJoint,b2RevoluteJointGetManifoldCount():b2ContactGetManifolds():b2ContactGetMass():b2BodyGetMotorForce():b2PrismaticJointGetMotorSpeed():b2PrismaticJoint,b2RevoluteJointGetMotorTorque():b2RevoluteJointGetNext():b2Shape,b2Body,b2Contact,b2JointGetNormals():b2PolygonShapeGetOBB():b2PolygonShapeGetPairCount():b2WorldGetPosition():b2BodyGetProxyCount():b2WorldGetRadius():b2CircleShapeGetRatio():b2GearJoint,b2PulleyJointGetReactionForce():b2Joint,b2DistanceJoint,b2GearJoint,b2MouseJoint,b2PulleyJoint,b2RevoluteJoint,b2PrismaticJointGetReactionTorque():b2PulleyJoint,b2PrismaticJoint,b2Joint,b2MouseJoint,b2RevoluteJoint,b2DistanceJoint,b2GearJointGetRestitution():b2ShapeGetShape1():b2ContactGetShape2():b2ContactGetShapeList():b2BodyGetSweepRadius():b2ShapeGetType():b2Joint,b2ShapeGetUpperLimit():b2RevoluteJoint,b2PrismaticJointGetUserData():b2Body,b2Joint,b2ShapeGetVertexCount():b2PolygonShapeGetVertices():b2PolygonShapeGetWorld():b2Body

GetWorldCenter():b2BodyGetWorldPoint():b2BodyGetWorldVector():b2BodyGetXForm():b2Sweep,b2Body







-i-

Initialize():b2DistanceJointDef,b2PrismaticJointDef,b2RevoluteJointDef,b2PulleyJointDefIsBullet():b2BodyIsDynamic():b2BodyIsFrozen():b2BodyIsLimitEnabled():b2PrismaticJoint,b2RevoluteJointIsMotorEnabled():b2RevoluteJoint,b2PrismaticJointIsSensor():b2ShapeIsSleeping():b2BodyIsSolid():b2ContactIsStatic():b2BodyIsValid():b2Vec2,b2AABB







-l-

Length():b2Vec2LengthSquared():b2Vec2







-m-

b2Mat22():b2Mat22







-n-

Normalize():b2Vec2







-o-

operator*=():b2Vec2operator+=():b2Vec2operator-():b2Vec2operator-=():b2Vec2







-p-

Persist():b2ContactListenerPutToSleep():b2Body







-q-

Query():b2World







-r-

Refilter():b2WorldRemove():b2ContactListenerResult():b2ContactListener







-s-

b2ShapeDef():b2ShapeDefSayGoodbye():b2DestructionListenerSet():b2Mat22,b2Vec2SetAngularVelocity():b2BodySetAsBox():b2PolygonDefSetBoundaryListener():b2WorldSetBullet():b2BodySetContactFilter():b2WorldSetContactListener():b2WorldSetContinuousPhysics():b2WorldSetDebugDraw():b2WorldSetDestructionListener():b2WorldSetFilterData():b2ShapeSetFlags():b2DebugDrawSetGravity():b2WorldSetIdentity():b2Mat22,b2XFormSetLimits():b2PrismaticJoint,b2RevoluteJointSetLinearVelocity():b2BodySetMass():b2BodySetMassFromShapes():b2BodySetMaxMotorForce():b2PrismaticJointSetMaxMotorTorque():b2RevoluteJointSetMotorSpeed():b2PrismaticJoint,b2RevoluteJointSetPositionCorrection():b2WorldSetTarget():b2MouseJointSetUserData():b2Joint,b2Body,b2ShapeSetWarmStarting():b2WorldSetXForm():b2BodySetZero():b2Vec2,b2Mat22ShouldCollide():b2ContactFilter

Solve():b2Mat22Step():b2WorldSupport():b2PolygonShape







-t-

TestPoint():b2CircleShape,b2PolygonShape,b2ShapeTestSegment():b2CircleShape,b2Segment,b2PolygonShape,b2Shape







-v-

b2Vec2():b2Vec2Validate():b2WorldViolation():b2BoundaryListener







-w-

b2World():b2WorldWakeUp():b2Body







-x-

b2XForm():b2XForm







-~-

~b2World():b2World



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