Handle<Value> Layer::New(mapnik::layer & lay_ref) {
HandleScope scope;
Layer* l = new Layer();
// copy new mapnik::layer into the shared_ptr
l->layer_ = layer_ptr(new mapnik::layer(lay_ref));
Handle<Value> ext = External::New(l);
Handle<Object> obj = constructor->GetFunction()->NewInstance(1, &ext);
return scope.Close(obj);
}
LayerSharedPtr MLNetwork::add_layer(const std::string& name, bool directed) {
LayerSharedPtr check = get_layer(name);
if (check) return NULL;
layer_id id = ++max_layer_id;
LayerSharedPtr layer_ptr(new layer(id,name));
layers.insert(id,layer_ptr);
cidx_layer_by_name[name] = layer_ptr;
for (LayerSharedPtr layer : get_layers()) {
sidx_edges_by_layer_pair[layer->id][layer_ptr->id]; // initialize an empty map
}
set_directed(layer_ptr,layer_ptr,directed);
return layer_ptr;
}
