Examples of com.vividsolutions.jts.operation.polygonize.Polygonizer

Package com.vividsolutions.jts.operation.polygonize

Examples of com.vividsolutions.jts.operation.polygonize.Polygonizer

com.vividsolutions.jts.operation.polygonize.Polygonizer
Polygonizes a set of {@link Geometry}s which contain linework that represents the edges of a planar graph. All types of Geometry are accepted as input; the constituent linework is extracted as the edges to be polygonized. The processed edges must be correctly noded; that is, they must only meet at their endpoints. The Polygonizer will run on incorrectly noded input but will not form polygons from non-noded edges, and will report them as errors.
The Polygonizer reports the follow kinds of errors:
- Dangles - edges which have one or both ends which are not incident on another edge endpoint
- Cut Edges - edges which are connected at both ends but which do not form part of polygon
- Invalid Ring Lines - edges which form rings which are invalid (e.g. the component lines contain a self-intersection)
@version 1.7

            Iterator kt = lines.entrySet().iterator();
            while (kt.hasNext()) {
                Map.Entry kentry = (Map.Entry) kt.next();
                String ref = kentry.getKey().toString();


                Polygonizer polygonizer = new Polygonizer();
                Geometry geom = (Geometry) kentry.getValue();


                polygonizer.add(geom);
                ArrayList polys = (ArrayList) polygonizer.getPolygons();


                // Darf eigentlich immer nur max. ein (1) Polygon
                // vorhanden sein!
                // Was aber anscheinend passieren kann, ist ein
                // LineString, der nicht polyoniert werden kann.

View Full Code Here


        if (areaMainCollection != null && areaHelperCollection != null) {
            String geomName = areaHelperCollection.getSchema()
                    .getGeometryDescriptor().getName().toString();


            Polygonizer polygonizer = new Polygonizer();
            int inputEdgeCount = areaHelperCollection.size();
            Collection lines = getLines(areaHelperCollection);


            Collection nodedLines = lines;
            nodedLines = nodeLines((List) lines);


            for (Iterator it = nodedLines.iterator(); it.hasNext();) {
                Geometry g = (Geometry) it.next();
                polygonizer.add(g);
            }


            ArrayList polys = (ArrayList) polygonizer.getPolygons();


            final SpatialIndex idx = new STRtree();
            FeatureIterator mt = areaMainCollection.features();
            try {
                while (mt.hasNext()) {

View Full Code Here

0 1 2

TOP

Related Classes of com.vividsolutions.jts.operation.polygonize.Polygonizer

bs.bs2d.geom.AreaSet

com.gi.engine.geometry.GeometryToolkit

com.vividsolutions.jtsexample.operation.polygonize.PolygonizeExample

com.vividsolutions.jtstest.function.PolygonizeFunctions

com.vividsolutions.jtstest.function.PolygonOverlayFunctions

es.udig.tools.geometry.split.RingExtractorTest

org.catais.veriso.utils.SurfaceAreaBuilder

org.geotools.geometry.jts.JTS

org.geotools.process.geometry.GeometryFunctions

org.locationtech.udig.tools.geometry.internal.util.GeometryUtil

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.