[Source] tracking down the elusive Xj3D Extrusion node for debugging

[Don Brutzman]

i'm now able to run Xj3D in debug mode from within Netbeans 7.0.1
(prerequisite:  set as main project)

am further trying to trace out how Extrusion is calculated by Xj3D.

i've looked at the following scenes, but none seem to get debugged
when loading a scene:

org.xj3d.sai.internal.node.geometry3d.SAIExtrusion.java
org.xj3d.sai.external.node.geometry3d.SAIExtrusion.java
org.web3d.x3d.sai.geometry3d.Extrusion.java (interface)
xj3d.filter.filters.ExtrusionGeometry.java

please advise what class is computing polygons so that I might
trace it on various examples.  TIA.

all the best, Don
-- 
Don Brutzman  Naval Postgraduate School, Code USW/Br      brutzman at nps.edu
Watkins 270   MOVES Institute, Monterey CA 93943-5000 USA  +1.831.656.2149
X3D, virtual worlds, underwater robots     http://faculty.nps.edu/brutzman