Struct b2Contact 

pub struct b2Contact { /* private fields */ }

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.

Implementations

impl b2Contact

pub fn SetEnabled(self: Pin<&mut b2Contact>, flag: bool)

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).

pub fn IsEnabled(self: &b2Contact) -> bool

Has this contact been disabled?

pub fn GetNext(self: Pin<&mut b2Contact>) -> *mut b2Contact

Get the next contact in the world’s contact list.

pub fn GetNext1(self: &b2Contact) -> *const b2Contact

pub fn SetFriction(self: Pin<&mut b2Contact>, friction: f32)

Override the default friction mixture. You can call this in b2ContactListener::PreSolve. This value persists until set or reset.

pub fn GetFriction(self: &b2Contact) -> f32

Get the friction.

pub fn SetRestitution(self: Pin<&mut b2Contact>, restitution: f32)

Override the default restitution mixture. You can call this in b2ContactListener::PreSolve. The value persists until you set or reset.

pub fn GetRestitution(self: &b2Contact) -> f32

Get the restitution.

pub fn SetRestitutionThreshold(self: Pin<&mut b2Contact>, threshold: f32)

Override the default restitution velocity threshold mixture. You can call this in b2ContactListener::PreSolve. The value persists until you set or reset.

pub fn GetRestitutionThreshold(self: &b2Contact) -> f32

Get the restitution threshold.

pub unsafe fn Evaluate( self: Pin<&mut b2Contact>, manifold: *mut b2Manifold, xfA: &b2Transform, xfB: &b2Transform, )

Evaluate this contact with your own manifold and transforms.

impl b2Contact

pub fn GetManifold(self: Pin<&mut Self>) -> *mut b2Manifold

Get the contact manifold. Do not modify the manifold unless you understand the internals of Box2D.

pub fn GetManifold1(&self) -> *const b2Manifold

pub unsafe fn GetWorldManifold(&self, worldManifold: *mut b2WorldManifold)

Get the world manifold.

pub fn IsTouching(&self) -> bool

Is this contact touching?

pub fn GetFixtureA(self: Pin<&mut Self>) -> *mut b2Fixture

Get fixture A in this contact.

pub fn GetFixtureA1(&self) -> *const b2Fixture

pub fn GetChildIndexA(&self) -> c_int

Get the child primitive index for fixture A.

pub fn GetFixtureB(self: Pin<&mut Self>) -> *mut b2Fixture

Get fixture B in this contact.

pub fn GetFixtureB1(&self) -> *const b2Fixture

pub fn GetChildIndexB(&self) -> c_int

Get the child primitive index for fixture B.

pub fn ResetFriction(self: Pin<&mut Self>)

Reset the friction mixture to the default value.

pub fn ResetRestitution(self: Pin<&mut Self>)

Reset the restitution to the default value.

pub fn ResetRestitutionThreshold(self: Pin<&mut Self>)

Reset the restitution threshold to the default value.

pub fn SetTangentSpeed(self: Pin<&mut Self>, speed: f32)

Set the desired tangent speed for a conveyor belt behavior. In meters per second.

pub fn GetTangentSpeed(&self) -> f32

Get the desired tangent speed. In meters per second.

Trait Implementations

impl ExternType for b2Contact

type Kind = Opaque

Either cxx::kind::Opaque or cxx::kind::Trivial.

type Id

A type-level representation of the type’s C++ namespace and type name.

impl MakeCppStorage for b2Contact

unsafe fn allocate_uninitialized_cpp_storage() -> *mut b2Contact

Allocates heap space for this type in C++ and return a pointer to that space, but do not initialize that space (i.e. do not yet call a constructor).

unsafe fn free_uninitialized_cpp_storage(arg0: *mut b2Contact)

Frees a C++ allocation which has not yet had a constructor called.