shapegraph.py 文件源码

def _register_node(self, p):
        if isinstance(p, Point):
            p = list(p.coords)[0]
        elif isinstance(p, tuple):
            pass
        else:
            raise TypeError('The point should be shapely::Point or a 2-tuple')

        if p not in self.node_ids:
            nid = self.nodes_counter
            self.node_ids[p] = nid
            self.node_xy[nid] = p
            self.nodes_counter += 1

        return self.node_ids[p]