private Polygon editPolygon(Polygon polygon, GeometryEditorOperation operation) {
Polygon newPolygon = (Polygon) operation.edit(polygon, factory);
// create one if needed
if (newPolygon == null) newPolygon = factory.createPolygon((CoordinateSequence) null);
if (newPolygon.isEmpty()) {
// RemoveSelectedPlugIn relies on this behaviour. [Jon Aquino]
return newPolygon;
}
LinearRing shell = (LinearRing) edit(newPolygon.getExteriorRing(), operation);
if (shell == null || shell.isEmpty()) {
// RemoveSelectedPlugIn relies on this behaviour. [Jon Aquino]
return factory.createPolygon(null, null);
}
ArrayList holes = new ArrayList();
for (int i = 0; i < newPolygon.getNumInteriorRing(); i++) {
LinearRing hole = (LinearRing) edit(newPolygon.getInteriorRingN(i), operation);
if (hole == null || hole.isEmpty()) {
continue;
}
holes.add(hole);
}
return factory.createPolygon(shell, (LinearRing[]) holes.toArray(new LinearRing[] {}));
}
public void testIsClosed() throws Exception {
LineString l = (LineString) reader.read("LINESTRING EMPTY");
assertTrue(l.isEmpty());
assertTrue(!l.isClosed());
LinearRing r = geometryFactory.createLinearRing((CoordinateSequence) null);
assertTrue(r.isEmpty());
assertTrue(r.isClosed());
MultiLineString m = geometryFactory.createMultiLineString(new LineString[] {l, r});
assertTrue(!m.isClosed());
MultiLineString m2 = geometryFactory.createMultiLineString(new LineString[] {r});
assertTrue(!m2.isClosed());
}
