Hi,
I am new to geotools. (windows 8.1 - geotols 14.2)
I am trying to parse this string (WKTReader2)
"MULTISURFACE (
((0 0, 1 0, 1 4, 0 0)),
CURVEPOLYGON (COMPOUNDCURVE (CIRCULARSTRING (0 2, 7 5, 2 10), (2 10, 0 2)),
COMPOUNDCURVE (CIRCULARSTRING (3 9, 6 5, 3 2), (3 2, 3 9))))"
to use it as a Custom WKT Shapes "wkt://" from geoserver
"http://docs.geoserver.org/2.8.x/en/user/styling/sld-extensions/pointsymbols
.html"
But I got this Excepiton
Exception in thread "main" com.vividsolutions.jts.io.ParseException:
Expected EMPTY or ( but found '0'
at org.geotools.geometry.jts.WKTReader2.parseError(WKTReader2.java:352)
at
org.geotools.geometry.jts.WKTReader2.getNextEmptyOrOpener(WKTReader2.java:26
5)
at org.geotools.geometry.jts.WKTReader2.getCoordinates(WKTReader2.java:168)
at
org.geotools.geometry.jts.WKTReader2.readLinearRingText(WKTReader2.java:567)
at org.geotools.geometry.jts.WKTReader2.readPolygonText(WKTReader2.java:663)
at
org.geotools.geometry.jts.WKTReader2.readMultiSurfaceText(WKTReader2.java:77
8)
at
org.geotools.geometry.jts.WKTReader2.readGeometryTaggedText(WKTReader2.java:
420)
at org.geotools.geometry.jts.WKTReader2.read(WKTReader2.java:151)
at org.geotools.geometry.jts.WKTReader2.read(WKTReader2.java:120)
at org.geotools.TestMultiSurface.main(TestMultiSurface.java:120)
I WROTE THIS PROGRAM
package org.geotools;
import com.vividsolutions.jts.geom.*;
import com.vividsolutions.jts.geom.impl.PackedCoordinateSequence;
import com.vividsolutions.jts.io.ParseException;
import org.geotools.geometry.jts.*;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
/**
* Created by alai on 25/05/2016.
test in POSTGIS:
SELECT ST_Area
(ST_WKTToSQL ('MULTISURFACE (
((0 0, 1 0, 1 4, 0
0)),
CURVEPOLYGON (COMPOUNDCURVE
(CIRCULARSTRING (0 2, 7 5, 2 10), (2 10, 0 2)),
COMPOUNDCURVE (CIRCULARSTRING
(3 9, 6 5, 3 2), (3 2, 3 9))))'));
postgisArea = 31.1602165357206
*/
public class TestMultiSurface {
public static void main(String[] args) throws ParseException,
IOException {
GeometryFactory geometryFactory =
JTSFactoryFinder.getGeometryFactory();
CurvedGeometryFactory curvedFactory = new
CurvedGeometryFactory(geometryFactory, Double.MAX_VALUE);
// B: - arc+line = exterior CounterClockwise
PackedCoordinateSequence coords_arc_B = new
PackedCoordinateSequence.Double(
new double[]{0, 2, 7, 5, 2, 10}, 2);
Coordinate[] coords_line_B = new Coordinate[]{new Coordinate(2, 10),
new Coordinate(0, 2)};
CircularString arc_B = (CircularString)
curvedFactory.createCurvedGeometry(coords_arc_B);
LineString line_B = geometryFactory.createLineString(coords_line_B);
List<LineString> list_B = new ArrayList<>();
list_B.add(arc_B);
list_B.add(line_B);
CompoundRing ring_B = (CompoundRing)
curvedFactory.createCurvedGeometry(list_B);
// C: - arc+line = holes Clockwise
PackedCoordinateSequence coords_arc_C = new
PackedCoordinateSequence.Double(
new double[]{3, 9, 6, 5, 3, 2}, 2);
Coordinate[] coords_line_C = new Coordinate[]
{new Coordinate(3, 2), new Coordinate(3, 9)};
CircularString arc_C = (CircularString)
curvedFactory.createCurvedGeometry(coords_arc_C);
LineString line_C = geometryFactory.createLineString(coords_line_C);
List<LineString> list_C = new ArrayList<>();
list_C.add(arc_C);
list_C.add(line_C);
CompoundRing ring_C = (CompoundRing)
curvedFactory.createCurvedGeometry(list_C);
// curve polygon BC
Polygon poly_BC = curvedFactory.createCurvePolygon(ring_B, new
LinearRing[]{ring_C});
// A: polygon
Coordinate[] coords_poly_A = new Coordinate[]
{new Coordinate(0, 0), new Coordinate(1, 0), new
Coordinate(1, 4), new Coordinate(0, 0)};
Polygon poly_A = geometryFactory.createPolygon(coords_poly_A);
// MultiSurface_A_BC
List<Polygon> polygons = new ArrayList<>();
polygons.add(poly_A);
polygons.add(poly_BC);
MultiSurface multiSurface_A_BC = (MultiSurface)
curvedFactory.createMultiSurface(polygons);
// write
WKTWriter2 wktWriter2 = new WKTWriter2();
String WKT2 = wktWriter2.write(multiSurface_A_BC);
// reader
WKTReader2 wktReader2 = new WKTReader2(curvedFactory);
// CREATE EXCEPTION -> NOT WORKING
MultiSurface multisurface_from_wkt2 = (MultiSurface)
wktReader2.read(WKT2);// ERROR
System.out.println("multiSurface_A_BC: valid? = " +
multiSurface_A_BC.isValid());
System.out.println("Area = " + multiSurface_A_BC.getArea()); // Area
= 31.110026267242873
System.out.println("\n" +
wktWriter2.writeFormatted(multiSurface_A_BC));
}
}
Thanks
Andrea Lai
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