hi,
I'm a student currently making my internship, i must writte a plugin into
the udig framework to find a shortest path, i have followed this guide
: http://docs.codehaus.org/display/GEOTDOC/Graphs
<http://docs.codehaus.org/display/GEOTDOC/Graphs>to build a graph. My
problem is that when i try to add a lineSegment to the
BasicLineGraphGenerator it's blocking. here is my code :
FeatureSource fs; // represente la source de donnees
FeatureCollection fc = null; // les donnees
Iterator featureIterator;
try {
fs = l.getResource(FeatureSource.class , null);
fc = fs.getFeatures();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
featureIterator = fc.iterator();
//initialisation du generateur
BasicLineGraphGenerator graphGen = new BasicLineGraphGenerator();
BasicLineGraphBuilder lineGraphBuilder = new
BasicLineGraphBuilder();
graphGen.setGraphBuilder(lineGraphBuilder);
Feature feature = null;
Geometry geom = null;
Coordinate[] coords ;
//parcours tous les objets du layer
while(featureIterator.hasNext()){
feature = (Feature)featureIterator.next();
geom = feature.getDefaultGeometry();
coords = geom.getCoordinates();
LineSegment lsg = null;
Coordinate p0 = null;
Coordinate p1 = null;
for(int i = 0; i< coords.length; i++){
p0 = p1;
p1 = coords[i];
if(p0 != null){
lsg = new LineSegment(p0,p1);
System.out.println("new line segment");
graphGen.add(lsg);
System.out.println("after graphGen");
}
}
}
System.out.println("end");
an other question : where can i found some documentation or code sample on
this subject?
thanks in advance for your help,
Jonathan Gillot
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