Sen, this is bug was stomped a while ago on the SVN repository, you
might try that. (or as a quick hack you can change edge.to() to
edge.getOtherNode(node) I think). I've been delaying releasing a new
tarball of MASON in order to make further progress on the manual
(writing the manual triggers bug fixes in MASON, it's a useful
exercise). I expect to have something ready for release next week.

Sean

On Jul 6, 2011, at 1:42 AM, Sen Lin wrote:

> hi,
> There may be a bug in the class of NetworkPortrayal2D.
> the following is from NetworkPortrayl2D's hitOrDraw method:
>
> protected void hitOrDraw(Graphics2D graphics, DrawInfo2D info, Bag
> putInHere)
> {
> ........................
> ........................
> for(int y=0;y<edges.numObjs;y++)
> {
> Edge edge = (Edge)edges.objs[y];
> Double2D locStop =
> field.getObjectLocation(edge.to()); /////// here's the
> bug !!!!!!!!!
> ..........................................................
> .........................................................
>
> newinfo.secondPoint.x = (info.draw.x + (xScale) * locStop.x);
> .........................................................
> }
> }
>
> if the network is undirected, Double2D locStop =
> field.getObjectLocation(edge.to()) will get a wrong second point
> location, because edge.to() is not necessary the other end of this
> edge. In other words, edge.to() may return the first network node
> if the network is undirected.
> This bug will cause some display errors. For example,in a undirected
> network, when i wanna draw an edge label, the label will appear in
> two different positions.
>
>
>
>
> --
> Best wishes!
>
> Lin Sen
> Network Key Lab, Institute of Computing Technology ,Chinese Academy
> of Science
> Address：F-707, Qingnian Department, Zhongguancun East Road, Beijing,
> P.R.C.
> Post：10000
> Tel：1521-064-9236