Method expand_cluster

src/dbscan.rs:83–103

(&mut self, ppos: usize, neighbours: Vec<usize>)

    }

    fn expand_cluster(&mut self, ppos: usize, neighbours: Vec<usize>) {
        let c = self.c;
        self.set_cluster(ppos, c);
        
        let mut q = neighbours.clone();
        while q.len() > 0 {
            let pp = q.pop().unwrap();
            if !self.visited(pp) {
                self.visit(pp);
                let neighbours = self.neighbours(pp);
                if neighbours.len() >= self.minpts {
                    for n in neighbours {
                        q.push(n);
                    }
                }
            }
            if self.get_cluster(pp) == -2 {
                self.set_cluster(pp, c);
            }
        }
    }
}