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Box2D
2.2
Box2D API Reference for <a href="http://www.kobold2d.com">Kobold2D</a> developers
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#include <b2Contact.h>
Public Member Functions | |
| b2Manifold * | GetManifold () |
| const b2Manifold * | GetManifold () const |
| void | GetWorldManifold (b2WorldManifold *worldManifold) const |
| Get the world manifold. | |
| bool | IsTouching () const |
| Is this contact touching? | |
| void | SetEnabled (bool flag) |
| bool | IsEnabled () const |
| Has this contact been disabled? | |
| b2Contact * | GetNext () |
| Get the next contact in the world's contact list. | |
| const b2Contact * | GetNext () const |
| b2Fixture * | GetFixtureA () |
| Get fixture A in this contact. | |
| const b2Fixture * | GetFixtureA () const |
| int32 | GetChildIndexA () const |
| Get the child primitive index for fixture A. | |
| b2Fixture * | GetFixtureB () |
| Get fixture B in this contact. | |
| const b2Fixture * | GetFixtureB () const |
| int32 | GetChildIndexB () const |
| Get the child primitive index for fixture B. | |
| void | SetFriction (float32 friction) |
| float32 | GetFriction () const |
| Get the friction. | |
| void | ResetFriction () |
| Reset the friction mixture to the default value. | |
| void | SetRestitution (float32 restitution) |
| float32 | GetRestitution () const |
| Get the restitution. | |
| void | ResetRestitution () |
| Reset the restitution to the default value. | |
| virtual void | Evaluate (b2Manifold *manifold, const b2Transform &xfA, const b2Transform &xfB)=0 |
| Evaluate this contact with your own manifold and transforms. | |
Protected Types | |
| enum | { e_islandFlag = 0x0001, e_touchingFlag = 0x0002, e_enabledFlag = 0x0004, e_filterFlag = 0x0008, e_bulletHitFlag = 0x0010, e_toiFlag = 0x0020 } |
Protected Member Functions | |
| void | FlagForFiltering () |
| Flag this contact for filtering. Filtering will occur the next time step. | |
| b2Contact (b2Fixture *fixtureA, int32 indexA, b2Fixture *fixtureB, int32 indexB) | |
| void | Update (b2ContactListener *listener) |
Static Protected Member Functions | |
| static void | AddType (b2ContactCreateFcn *createFcn, b2ContactDestroyFcn *destroyFcn, b2Shape::Type typeA, b2Shape::Type typeB) |
| static void | InitializeRegisters () |
| static b2Contact * | Create (b2Fixture *fixtureA, int32 indexA, b2Fixture *fixtureB, int32 indexB, b2BlockAllocator *allocator) |
| static void | Destroy (b2Contact *contact, b2Shape::Type typeA, b2Shape::Type typeB, b2BlockAllocator *allocator) |
| static void | Destroy (b2Contact *contact, b2BlockAllocator *allocator) |
Protected Attributes | |
| uint32 | m_flags |
| b2Contact * | m_prev |
| b2Contact * | m_next |
| b2ContactEdge | m_nodeA |
| b2ContactEdge | m_nodeB |
| b2Fixture * | m_fixtureA |
| b2Fixture * | m_fixtureB |
| int32 | m_indexA |
| int32 | m_indexB |
| b2Manifold | m_manifold |
| int32 | m_toiCount |
| float32 | m_toi |
| float32 | m_friction |
| float32 | m_restitution |
Static Protected Attributes | |
| static b2ContactRegister | s_registers [b2Shape::e_typeCount][b2Shape::e_typeCount] |
| static bool | s_initialized |
Friends | |
| class | b2ContactManager |
| class | b2World |
| class | b2ContactSolver |
| class | b2Body |
| class | b2Fixture |
The class manages contact between two shapes. A contact exists for each overlapping AABB in the broad-phase (except if filtered). Therefore a contact object may exist that has no contact points.
| virtual void b2Contact::Evaluate | ( | b2Manifold * | manifold, |
| const b2Transform & | xfA, | ||
| const b2Transform & | xfB | ||
| ) | [pure virtual] |
Evaluate this contact with your own manifold and transforms.
Implemented in b2ChainAndCircleContact, b2ChainAndPolygonContact, b2CircleContact, b2EdgeAndCircleContact, b2EdgeAndPolygonContact, b2PolygonContact, and b2PolygonAndCircleContact.
| void b2Contact::FlagForFiltering | ( | ) | [inline, protected] |
Flag this contact for filtering. Filtering will occur the next time step.
| int32 b2Contact::GetChildIndexA | ( | ) | const [inline] |
Get the child primitive index for fixture A.
| int32 b2Contact::GetChildIndexB | ( | ) | const [inline] |
Get the child primitive index for fixture B.
| b2Fixture * b2Contact::GetFixtureA | ( | ) | [inline] |
Get fixture A in this contact.
| b2Fixture * b2Contact::GetFixtureB | ( | ) | [inline] |
Get fixture B in this contact.
| float32 b2Contact::GetFriction | ( | ) | const [inline] |
Get the friction.
| b2Manifold * b2Contact::GetManifold | ( | ) | [inline] |
Get the contact manifold. Do not modify the manifold unless you understand the internals of Box2D.
| b2Contact * b2Contact::GetNext | ( | ) | [inline] |
Get the next contact in the world's contact list.
| float32 b2Contact::GetRestitution | ( | ) | const [inline] |
Get the restitution.
| void b2Contact::GetWorldManifold | ( | b2WorldManifold * | worldManifold | ) | const [inline] |
Get the world manifold.
| bool b2Contact::IsEnabled | ( | ) | const [inline] |
Has this contact been disabled?
| bool b2Contact::IsTouching | ( | ) | const [inline] |
Is this contact touching?
| void b2Contact::ResetFriction | ( | ) | [inline] |
Reset the friction mixture to the default value.
| void b2Contact::ResetRestitution | ( | ) | [inline] |
Reset the restitution to the default value.
| void b2Contact::SetEnabled | ( | bool | flag | ) | [inline] |
Enable/disable this contact. This can be used inside the pre-solve contact listener. The contact is only disabled for the current time step (or sub-step in continuous collisions).
| void b2Contact::SetFriction | ( | float32 | friction | ) | [inline] |
Override the default friction mixture. You can call this in b2ContactListener::PreSolve. This value persists until set or reset.
| void b2Contact::SetRestitution | ( | float32 | restitution | ) | [inline] |
Override the default restitution mixture. You can call this in b2ContactListener::PreSolve. The value persists until you set or reset.