[Jung-support] [jung - Open Discussion] RE: problems with Tree/DAG layouts

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By: e-flat

I'm not sure that I correctly understand the problem you're reporting.  Are
you saying that the first time you create a Graph, DAGLayout, and VisualizationViewer
that it all works fine, and then if you create, in the same program, _entirely
new_ copies of each of these that the layout is incorrect?

If so, I suspect that the problem is, as your later post suggests, related to
the various static fields that this class contains.  It looks like it might
be the overridden version of incrementsAreDone() that's the specific culprit;
try commenting that out (so that the default SpringLayout method will be callled)
and see how it works.

There's probably no good reason for most of the properties of this class to
be static; this is in the contrib/ directory because we've never gotten around
to looking into things like this.  :P :)

Anyway, please let us know if I've correctly interpreted what you said, and
whether my suggested fix works.  (If that doesn't work, I'd try just making
most of those various static fields into member variables and see what happens.)

Joshua

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