Struct re_view_spatial::spatial_topology::SpatialTopology

pub struct SpatialTopology {
    subspaces: IntMap<EntityPathHash, SubSpace>,
    subspace_origin_per_logged_entity: IntMap<EntityPathHash, EntityPathHash>,
}

Spatial topological information about a store.

Describes how 2D & 3D spaces are connected/disconnected.

Used to determine whether 2D/3D visualizers are visualizable and to inform view generation heuristics.

Spatial topology is time independent but may change as new data comes in. Generally, the assumption is that topological cuts stay constant over time.

Fields

subspaces: IntMap<EntityPathHash, SubSpace>

All subspaces, identified by their origin-hash.

subspace_origin_per_logged_entity: IntMap<EntityPathHash, EntityPathHash>

Maps each logged entity to the origin of a subspace.

This is purely an optimization to speed up searching for subspaces.

Implementations

impl SpatialTopology

pub fn access<T>(store_id: &StoreId, f: impl FnOnce(&Self) -> T) -> Option<T>

Accesses the spatial topology for a given store.

pub fn subspace_for_entity(&self, entity: &EntityPath) -> &SubSpace

Returns the subspace an entity belongs to.

pub fn iter_subspaces(&self) -> impl Iterator<Item = &SubSpace>

Iterates over all subspaces.

fn subspace_origin_hash_for_entity(&self, entity: &EntityPath) -> EntityPathHash

pub fn subspace_for_subspace_origin( &self, origin: EntityPathHash, ) -> Option<&SubSpace>

Returns the subspace for a given origin.

None if the origin doesn’t identify its own subspace.

fn on_store_diff( &mut self, entity_path: &EntityPath, added_components: impl Iterator<Item = ComponentName>, )

fn update_space_with_new_connections( &mut self, entity_path: &EntityPath, subspace_origin_hash: EntityPathHash, new_connections: SubSpaceConnectionFlags, )

fn add_new_entity( &mut self, entity_path: &EntityPath, subspace_connections: SubSpaceConnectionFlags, )

Adds a new entity to the spatial topology that wasn’t known before.

fn split_subspace( &mut self, split_subspace_origin_hash: EntityPathHash, new_space_origin: &EntityPath, connection_to_parent: SubSpaceConnectionFlags, )

Trait Implementations

impl Default for SpatialTopology

fn default() -> Self

Returns the “default value” for a type.