I am planning to integrate RadialNet into Zenmap, and implement the ideas I brought out on the nmap-dev mailing list (http://seclists.org/nmap-dev/2008/q1/0409.html). I won't try to redo the work that Umit/RadialNet developers have done in this direction, as my approach as different.

A "Network Mapping" mode (working title) should be created, which would have its own window. It will present a user with an empty RadialNet workspace, and a command line at the bottom. The command line can be used to run a regular Nmap sweep (or select an existing scan profile from the list), or it can be used to invoke a "network discovery" command.

Both the idea, the mechanism and proof-of-concept code behind the "network discovery" command is explained in my post to the nmap-dev mailing list (http://seclists.org/nmap-dev/2008/q1/0409.html). It will be modified to utilize Nmap's traceroute functionality.

Also, two features will be added to RadialNet:
1. Selection tool, which will allow the user to select nodes of interest on the topology graph, and add further info to the graph by running a new scan on the selected nodes.
2. Two-way communication between Zenmap and RadialNet, which will allow runtime modifications to the topology to be monitored as a regular scan from within Zenmap's window.