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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