Trait plexus::primitive::index::Indexer

pub trait Indexer<T, K> where
    T: Topological, {
    fn index<F>(
        &mut self, 
        vertex: T::Vertex, 
        f: F
    ) -> (usize, Option<T::Vertex>)
    where
        F: Fn(&T::Vertex) -> &K;
}

Vertex indexer.

Disambiguates arbitrary vertex data and emits a one-to-one mapping of indices to vertices. This is useful for generating basic rendering buffers for graphics pipelines.

Required methods

fn index<F>(&mut self, vertex: T::Vertex, f: F) -> (usize, Option<T::Vertex>) where
    F: Fn(&T::Vertex) -> &K, 

Indexes a vertex using a keying function.

Returns a tuple containing the index and optionally vertex data. Vertex data is only returned if the data has not yet been indexed, otherwise None is returned.

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Implementors

impl<T, K> Indexer<T, K> for HashIndexer<T, K> where
    T: Topological,
    K: Clone + Eq + Hash, 

fn index<F>(&mut self, input: T::Vertex, f: F) -> (usize, Option<T::Vertex>) where
    F: Fn(&T::Vertex) -> &K, 

impl<T, K> Indexer<T, K> for LruIndexer<T, K> where
    T: Topological,
    K: Clone + PartialEq, 

fn index<F>(&mut self, input: T::Vertex, f: F) -> (usize, Option<T::Vertex>) where
    F: Fn(&T::Vertex) -> &K, 

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