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 Polygon addHole(Polygon poly, LinearRing hole) {
int nOrigHoles = poly.getNumInteriorRing();
LinearRing[] newHoles = new LinearRing[nOrigHoles + 1];
for (int i = 0; i < nOrigHoles; i++) {
newHoles[i] = (LinearRing) poly.getInteriorRingN(i);
}
newHoles[nOrigHoles] = hole;
return geomFactory.createPolygon((LinearRing) poly.getExteriorRing(), newHoles);
}
public static void computeDistance(Polygon poly, Coordinate pt, PointPairDistance ptDist) {
computeDistance(poly.getExteriorRing(), pt, ptDist);
for (int i = 0; i < poly.getNumInteriorRing(); i++) {
computeDistance(poly.getInteriorRingN(i), pt, ptDist);
}
}