Function nannou::geom::vertex::iter_from_indices

Important traits for IterFromIndices<'a, I, V>

impl<'a, I, V> Iterator for IterFromIndices<'a, I, V> where
    I: Iterator<Item = usize>,  type Item = &'a V;

pub fn iter_from_indices<I, V>(
    indices: I, 
    vertices: &[V]
) -> IterFromIndices<I::IntoIter, V> where
    I: IntoIterator<Item = usize>, 

Produce an iterator yielding a vertex for each index yielded by the given indices iterator.