/** * make sure outer ring is CCW and holes are CW * * @param p polygon to check */ Polygon makeGoodSHAPEPolygon(Polygon p) { LinearRing outer; LinearRing[] holes = new LinearRing[p.getNumInteriorRing()]; Coordinate[] coords; coords = p.getExteriorRing().getCoordinates(); if (cga.isCCW(coords)) { outer = reverseRing((LinearRing) p.getExteriorRing()); } else { outer = (LinearRing) p.getExteriorRing(); } for (int t = 0; t < p.getNumInteriorRing(); t++) { coords = p.getInteriorRingN(t).getCoordinates(); if (!(cga.isCCW(coords))) { holes[t] = reverseRing((LinearRing) p.getInteriorRingN(t)); } else { holes[t] = (LinearRing) p.getInteriorRingN(t); } } return new Polygon(outer, holes, new PrecisionModel(), 0); }
protected Geometry transformPolygon(Polygon geom, Geometry parent) { boolean isAllValidLinearRings = true; Geometry shell = transformLinearRing((LinearRing) geom.getExteriorRing(), geom); if (shell == null || !(shell instanceof LinearRing) || shell.isEmpty()) isAllValidLinearRings = false; // return factory.createPolygon(null, null); ArrayList holes = new ArrayList(); for (int i = 0; i < geom.getNumInteriorRing(); i++) { Geometry hole = transformLinearRing((LinearRing) geom.getInteriorRingN(i), geom); if (hole == null || hole.isEmpty()) { continue; } if (!(hole instanceof LinearRing)) isAllValidLinearRings = false; holes.add(hole); } if (isAllValidLinearRings) return factory.createPolygon( (LinearRing) shell, (LinearRing[]) holes.toArray(new LinearRing[] {})); else { List components = new ArrayList(); if (shell != null) components.add(shell); components.addAll(holes); return factory.buildGeometry(components); } }
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); }