Struct re_space_view_spatial::transform_component_tracker::TransformComponentTracker

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pub struct TransformComponentTracker {
    components_per_entity: IntMap<EntityPathHash, PotentialTransformComponentSet>,
}
Expand description

Keeps track of which entities have had any Transform3D-related data on any timeline at any point in time.

This is used to optimize queries in the TransformContext, so that we don’t unnecessarily pay for the fixed overhead of all the query layers when we know for a fact that there won’t be any data there. This is a huge performance improvement in practice, especially in recordings with many entities.

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§components_per_entity: IntMap<EntityPathHash, PotentialTransformComponentSet>

Implementations§

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impl TransformComponentTracker

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

Accesses the spatial topology for a given store.

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pub fn potential_transform_components( &self, entity_path: &EntityPath ) -> Option<&PotentialTransformComponentSet>

Trait Implementations§

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impl Default for TransformComponentTracker

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fn default() -> TransformComponentTracker

Returns the “default value” for a type. Read more

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