Module contact 

Modules

contact_flags

Structs

Contact

Cold contact data. Used as a persistent handle and for persistent island connectivity. (b2Contact)

ContactEdge

A contact edge is used to connect bodies and contacts together in a contact graph where each body is a node and each contact is an edge. A contact edge belongs to a doubly linked list maintained in each attached body. Each contact has two contact edges, one for each attached body. (b2ContactEdge)

ContactSim

Manages contact between two shapes. A contact exists for each overlapping AABB in the broad-phase (except if filtered), so a contact object may exist that has no contact points. (b2ContactSim)

ContactUpdateContext

The world data update_contact needs, copied out so the caller can hold &mut ContactSim and &Shape borrows at the same time (the C version reads these through b2World*).

Functions

can_collide

(b2CanCollide)

contact_get_data

Get the data for a contact. The manifold may have no points if the contact is not touching. (b2Contact_GetData)

contact_is_valid

Contact identifier validation. Provides validation for up to 2^32 allocations. (b2Contact_IsValid — the world-registry check collapses to the index/generation check in the registry-less port)

create_contact

WARNING: this should never fail to create a contact because the pair already exists in the pairSet. (b2CreateContact — C takes shape pointers; the Rust port takes shape ids.)

destroy_contact

A contact is destroyed when:

get_contact_full_id

Validate a ContactId and return the raw contact index. (b2GetContactFullId — C returns a pointer; Rust returns the index into world.contacts)

get_contact_sim

Borrow a contact’s sim data mutably: constraint graph color for awake touching contacts, otherwise the owning solver set. (b2GetContactSim)

get_contact_sim_ref

Shared-reference variant of get_contact_sim for read-only accessors. (The C b2GetContactSim is used for both; Rust needs the split.)

update_contact

Update the contact manifold and touching status. Note: do not assume the shape AABBs are overlapping or are valid. (b2UpdateContact)