Re: [Geotools-devel] How I do to display multiple geometries?

[Rob A. <rob...@gm...>]

you need the application-schema support

see http://docs.geoserver.org/2.0.0/user/data/app-schema/index.html

Rob Atkinson

On Fri, Apr 30, 2010 at 12:15 AM, Amador Antonio Cuenca
<sph...@gm...> wrote:
> I've the follow code, but I can't add multiple geometries because my
> SimpleFeatureType is "hard coded", how do I to load the type of feature
> dinamyc?
>
> package demo.geometry01;
>
> import com.vividsolutions.jts.geom.Coordinate;
> import com.vividsolutions.jts.geom.Geometry;
> import com.vividsolutions.jts.geom.GeometryFactory;
> import com.vividsolutions.jts.geom.LinearRing;
> import com.vividsolutions.jts.geom.Polygon;
> import org.geotools.data.DataUtilities;
> import org.geotools.feature.FeatureCollection;
> import org.geotools.feature.FeatureCollections;
> import org.geotools.feature.simple.SimpleFeatureBuilder;
>
> import org.geotools.geometry.jts.JTSFactoryFinder;
> import org.geotools.map.DefaultMapContext;
> import org.geotools.map.MapContext;
> import org.geotools.swing.JMapFrame;
> import org.opengis.feature.simple.SimpleFeature;
> import org.opengis.feature.simple.SimpleFeatureType;
>
> public class SimpleGeometryLab {
>
>     GeometryFactory gf = JTSFactoryFinder.getGeometryFactory(null);
>     FeatureCollection col = FeatureCollections.newCollection();
>     SimpleFeatureBuilder sfb;
>     FeatureCollection<SimpleFeatureType, SimpleFeature> miCol =
>             FeatureCollections.newCollection();
>     MapContext map;
>     JMapFrame frame;
>
>     public static void main(String[] args) throws Exception {
>         SimpleGeometryLab me = new SimpleGeometryLab();
>     }
>
>     public SimpleGeometryLab() throws Exception {
>         map = new DefaultMapContext();
>         frame = new JMapFrame(map);
>         map.setTitle("Geometrias simples");
>
>         //Here my problem... ¬¬
>         SimpleFeatureType TYPE = DataUtilities.createType(
>                 "Location",
>                 "location:Point:srid=4326,"
>                 + "name:String");
>         sfb = new SimpleFeatureBuilder(TYPE);
>
>         sfb.add(crearPunto(10, 30));
>         sfb.add(crearLinea());
>         SimpleFeature feat = sfb.buildFeature(null);
>         miCol.add(feat);
>
>         map.addLayer(miCol, null);
>         frame.setSize(800, 600);
>         frame.setVisible(true);
>     }
>
>     private Geometry crearPunto(int x, int y) {
>         Coordinate c = new Coordinate(x, y);
>         return gf.createPoint(c);
>     }
>
>     //Not in use
>     private Geometry crearLinea() {
>         Coordinate[] c = new Coordinate[]{
>             new Coordinate(100, 112),
>             new Coordinate(200, 100),
>             new Coordinate(85, 46)
>         };
>         return gf.createLineString(c);
>     }
>
>     //Not in use
>     private Geometry createCircle(double x, double y, final double r) {
>         final int l = 32;
>         Coordinate coords[] = new Coordinate[l + 1];
>         for (int i = 0; i < l; i++) {
>             double angle = ((double) i / (double) l) * Math.PI * 2.0;
>             double dx = Math.cos(angle) * r;
>             double dy = Math.sin(angle) * r;
>             coords[i] = new Coordinate((double) x + dx, (double) y + dy);
>         }
>         coords[l] = coords[0];
>
>         LinearRing ring = gf.createLinearRing(coords);
>         Polygon polygon = gf.createPolygon(ring, null);
>
>         return polygon;
>     }
>
> }
>
> --
> TSU. Amador Cuenca
>
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