Examples of com.vividsolutions.jts.geom.LinearRing

com.vividsolutions.jts.geom.LinearRing
Models an OGC SFS LinearRing. A LinearRing is a LineString which is both closed and simple. In other words, the first and last coordinate in the ring must be equal, and the interior of the ring must not self-intersect. Either orientation of the ring is allowed.
A ring must have either 0 or 4 or more points. The first and last points must be equal (in 2D). If these conditions are not met, the constructors throw an {@link IllegalArgumentException} @version 1.7

     */
    public Polygon polygon( int[] xy, int[] holes[] ) {
        if (holes == null || holes.length == 0) {
            return polygon(xy);
        }
        LinearRing shell = ring(xy);


        LinearRing[] rings = new LinearRing[holes.length];


        for( int i = 0; i < xy.length; i++ ) {
            rings[i] = ring(holes[i]);

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     * @throws Exception
     */
    @Test
    public void testSetTransformScale() throws Exception {
        GeometryFactory factory = new GeometryFactory();
        LinearRing linearRing = factory.createLinearRing(new Coordinate[]{
                new Coordinate(10, 10),
                new Coordinate(10, 20.5),
                new Coordinate(10, 20),
                new Coordinate(20, 20),
                new Coordinate(10, 10)

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    @Test
    public void testSetGeometries() throws Exception {
        GeometryFactory factory = new GeometryFactory();
        int offset=0;
        LinearRing linearRing = factory.createLinearRing(new Coordinate[]{
                new Coordinate(offset+5, 7),
                new Coordinate(offset+8, 7),
                new Coordinate(offset+8, 8),
                new Coordinate(offset+5, 8),
                new Coordinate(offset+5, 7)

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        editBlackboardEvent = l.getEditBlackboardEvent();
        assertEquals(2, ((List) editBlackboardEvent.getNewValue()).size());
        assertEquals(map, editBlackboardEvent.getSource());




        LinearRing ring = createShellRing(factory, 10);
        
        map=new EditBlackboard(SCREEN.x,SCREEN.y, transform, layerToWorld);
        map.getListeners().add(l);
        mapping=map.setGeometries(ring, null);
        assertEquals(ShapeType.LINE, mapping.get(ring).getShapeType());

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    }
    
    @Test
    public void testGetCandidate() throws Exception {
        GeometryFactory factory=new GeometryFactory();
        LinearRing ring1=createShellRing(factory, 10);
        LinearRing ring2=createShellRing(factory, 30);
        LinearRing ring3=createShellRing(factory, 32);
        EditBlackboard map = new EditBlackboard(SCREEN.x,SCREEN.y, transform, layerToWorld);
        Map<Geometry, EditGeom> mapping = map.setGeometries(ring1, null);
        mapping.putAll(map.addGeometry(ring2, null));
        mapping.putAll(map.addGeometry(ring3, null));
        assertPixMapState(map,3,5,0,0);

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        assertEquals(EventType.ADD_POINT, l.getEditBlackboardEvent().getType());
        EditBlackboardEvent editBlackboardEvent = l.getEditBlackboardEvent();
        assertEquals(null, editBlackboardEvent.getOldValue());
        assertEquals(Point.valueOf(10,5), editBlackboardEvent.getNewValue());
        
        LinearRing ring = createShellRing(factory, 10);
        
        map=new EditBlackboard(SCREEN.x,SCREEN.y, transform, layerToWorld);
        map.getListeners().add(l);
        Map<Geometry, EditGeom> mapping = map.setGeometries(ring, null);
        assertPixMapState(map,1,5,0,0);
        
        //add at a particular index.
        map.insertCoord(25,15, 3, mapping.get(ring).getShell());
        assertEquals(Point.valueOf(20,10),mapping.get(ring).getShell().getPoint(0));
        assertEquals(Point.valueOf(30,10),mapping.get(ring).getShell().getPoint(1));
        assertEquals(Point.valueOf(30,15),mapping.get(ring).getShell().getPoint(2));
        assertEquals(Point.valueOf(25,15),mapping.get(ring).getShell().getPoint(3));
        assertEquals(Point.valueOf(20,15),mapping.get(ring).getShell().getPoint(4));
        assertEquals(EventType.ADD_POINT, l.event.getType());
        editBlackboardEvent = l.getEditBlackboardEvent();
        assertEquals(null, editBlackboardEvent.getOldValue());
        assertEquals(Point.valueOf(25,15), editBlackboardEvent.getNewValue());
        assertEquals(mapping.get(ring).getShell(), editBlackboardEvent.getSource());


        //create a geom one point at a time   test ordering of geometries
        map=new EditBlackboard(SCREEN.x,SCREEN.y, transform, layerToWorld);
        map.getListeners().add(l);
        geomShape = map.getGeoms().get(0);
        map.addPoint(0,0, geomShape.getShell());
        map.addPoint(0,100, geomShape.getShell());
        map.addPoint(50,100, geomShape.getShell());
        map.addPoint(100,100, geomShape.getShell());
        map.addPoint(50,150, geomShape.getShell());
        
        assertEquals(Point.valueOf(0,0), geomShape.getShell().getPoint(0));
        assertEquals(Point.valueOf(0,100), geomShape.getShell().getPoint(1));
        assertEquals(Point.valueOf(50,100), geomShape.getShell().getPoint(2));
        assertEquals(Point.valueOf(100,100), geomShape.getShell().getPoint(3));
        assertEquals(Point.valueOf(50,150), geomShape.getShell().getPoint(4));


        //test the coordinates were created correcly
        assertEquals(new Coordinate(-9.5,-4.5), geomShape.getShell().getCoord(0));
        assertEquals(new Coordinate(-9.5,95.5), geomShape.getShell().getCoord(1));
        assertEquals(new Coordinate(40.5,95.5), geomShape.getShell().getCoord(2));
        assertEquals(new Coordinate(90.5,95.5), geomShape.getShell().getCoord(3));
        assertEquals(new Coordinate(40.5,145.5), geomShape.getShell().getCoord(4));
        
        // now making sure the the CoordMap is correctly updated too.
        assertEquals(1, map.getCoords(0,0).size());
        assertEquals(new Coordinate(-9.5,-4.5), map.getCoords(0,0).get(0));
        assertEquals(1, map.getCoords(0,100).size());
        assertEquals(new Coordinate(-9.5,95.5), map.getCoords(0,100).get(0));
        assertEquals(1, map.getCoords(0,100).size());
        assertEquals(new Coordinate(40.5,95.5), map.getCoords(50,100).get(0));
        assertEquals(1, map.getCoords(0,100).size());
        assertEquals(new Coordinate(90.5,95.5), map.getCoords(100,100).get(0));
        assertEquals(1, map.getCoords(50,150).size());
        assertEquals(new Coordinate(40.5,145.5), map.getCoords(50,150).get(0));


        //insert a vertex in a hole
        Polygon polygon=createPolygon(factory, 10);
        map=new EditBlackboard(SCREEN.x,SCREEN.y, transform, layerToWorld);
        map.getListeners().add(l);
        mapping = map.setGeometries(polygon, null);
        assertPixMapState(map,1,5,1,5);
        
        //add at a particular index.
        PrimitiveShape hole = mapping.get(polygon).getHoles().get(0);
        map.insertCoord(26,13, 3, hole);
        assertEquals(Point.valueOf(25,12),hole.getPoint(0));
        assertEquals(Point.valueOf(28,12),hole.getPoint(1));
        assertEquals(Point.valueOf(28,13),hole.getPoint(2));
        assertEquals(Point.valueOf(26,13),hole.getPoint(3));
        assertEquals(Point.valueOf(25,13),hole.getPoint(4));        
        editBlackboardEvent = l.getEditBlackboardEvent();
        assertEquals(null, editBlackboardEvent.getOldValue());
        assertEquals(Point.valueOf(26,13), editBlackboardEvent.getNewValue());
        assertEquals(hole, editBlackboardEvent.getSource());




        
        //add on an edge test ordering of geometries
        LinearRing ring2=createShellRing(factory, 30);
        LinearRing ring3=createShellRing(factory, 32);
        
        ring3.getCoordinateN(2).y=20;
        
        mapping=map.setGeometries(ring2, null);
        mapping.putAll(map.addGeometry(ring3, null));
        
        map.addToNearestEdge(54,12, mapping.get(ring2), true);
        assertEquals(1, map.getCoords(54,12).size());
        assertEquals(new Coordinate(44.5,7.5), mapping.get(ring2).getShell().getCoord(2));
        editBlackboardEvent = l.getEditBlackboardEvent();
        assertEquals(null, editBlackboardEvent.getOldValue());
        assertEquals(Point.valueOf(54,12), editBlackboardEvent.getNewValue());
        assertEquals(mapping.get(ring2).getShell(), editBlackboardEvent.getSource());
        
        
        mapping=map.setGeometries(ring2, null);
        mapping.putAll(map.addGeometry(ring3, null));
        
        List<ClosestEdge> added = map.addToNearestEdge(51,12,true);
        assertEquals(2, added.size());
        assertTrue( added.get(0).getGeom()==mapping.get(ring3) || added.get(1).getGeom()==mapping.get(ring3));
        assertTrue( added.get(0).getGeom()==mapping.get(ring2) || added.get(1).getGeom()==mapping.get(ring2));
        assertEquals(2, map.getCoords(51,12).size());
        assertEquals(new Coordinate(41.5,7.5), mapping.get(ring2).getShell().getCoord(2));
        assertEquals(new Coordinate(41.5,7.5), mapping.get(ring3).getShell().getCoord(2));
        editBlackboardEvent = l.getEditBlackboardEvent();
        assertEquals(null, editBlackboardEvent.getOldValue());
        assertEquals(Point.valueOf(51,12), editBlackboardEvent.getNewValue());
        assertTrue(((Collection) l.event.getSource()).contains(added.get(0).getPart())  );
        assertTrue(((Collection) l.event.getSource()).contains(added.get(1).getPart())  );
        
        // create hole one point at a time
        map=new EditBlackboard(SCREEN.x,SCREEN.y, transform, layerToWorld);
        map.getListeners().add(l);
        geomShape = map.getGeoms().get(0);
        hole = geomShape.newHole();
        try{
            map.addPoint(0,0, null);
            fail();
        }catch (Exception e) {
            //good
        }
     
        map.addPoint(0,0, hole);
        assertEquals(Point.valueOf(0,0), l.getEditBlackboardEvent().getNewValue());
        map.addPoint(0,100, hole);
        assertEquals(Point.valueOf(0,100), l.getEditBlackboardEvent().getNewValue());
        map.addPoint(50,100, hole);
        assertEquals(Point.valueOf(50,100), l.getEditBlackboardEvent().getNewValue());
        map.addPoint(100,100, hole);
        assertEquals(Point.valueOf(100,100), l.getEditBlackboardEvent().getNewValue());
        map.addPoint(50,150, hole);
        assertEquals(null, l.getEditBlackboardEvent().getOldValue());
        assertEquals(Point.valueOf(50,150), l.getEditBlackboardEvent().getNewValue());
        assertEquals(hole, l.getEditBlackboardEvent().getSource());
        
        
        assertEquals(Point.valueOf(0,0), geomShape.getHoles().get(0).getPoint(0));
        assertEquals(Point.valueOf(0,100), geomShape.getHoles().get(0).getPoint(1));
        assertEquals(Point.valueOf(50,100), geomShape.getHoles().get(0).getPoint(2));
        assertEquals(Point.valueOf(100,100), geomShape.getHoles().get(0).getPoint(3));
        assertEquals(Point.valueOf(50,150), geomShape.getHoles().get(0).getPoint(4));


        //test the coordinates were created correcly
        assertEquals(new Coordinate(-9.5,-4.5), geomShape.getHoles().get(0).getCoord(0));
        assertEquals(new Coordinate(-9.5,95.5), geomShape.getHoles().get(0).getCoord(1));
        assertEquals(new Coordinate(40.5,95.5), geomShape.getHoles().get(0).getCoord(2));
        assertEquals(new Coordinate(90.5,95.5), geomShape.getHoles().get(0).getCoord(3));
        assertEquals(new Coordinate(40.5,145.5), geomShape.getHoles().get(0).getCoord(4));


        // now making sure the the CoordMap is correctly updated too.
        assertEquals(1, map.getCoords(0,0).size());
        assertEquals(new Coordinate(-9.5,-4.5), map.getCoords(0,0).get(0));
        assertEquals(1, map.getCoords(0,100).size());
        assertEquals(new Coordinate(-9.5,95.5), map.getCoords(0,100).get(0));
        assertEquals(1, map.getCoords(0,100).size());
        assertEquals(new Coordinate(40.5,95.5), map.getCoords(50,100).get(0));
        assertEquals(1, map.getCoords(0,100).size());
        assertEquals(new Coordinate(90.5,95.5), map.getCoords(100,100).get(0));
        assertEquals(1, map.getCoords(50,150).size());
        assertEquals(new Coordinate(40.5,145.5), map.getCoords(50,150).get(0));
        
        // call add to edge so that it is added to a hole
        polygon=createPolygon(factory, 10);
        LinearRing ring1=createShellRing(factory, 10);
        mapping=map.setGeometries(ring1, null);
        mapping.putAll(map.addGeometry(polygon, null));


        added=map.addToNearestEdge(26,12, true);
        assertEquals(1, added.size());

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     */
    @Test
    public void testMoveCoords() throws Exception, Exception {
        EventListener l=new EventListener();
        GeometryFactory factory=new GeometryFactory();
        LinearRing ring1=createShellRing(factory, 10);
        LinearRing ring2=createShellRing(factory, 10);
        LinearRing ring3=createShellRing(factory, 10);
        LinearRing ring4=createShellRing(factory, 40);
        
        EditBlackboard map = new EditBlackboard(SCREEN.x,SCREEN.y, transform, layerToWorld);
        map.getListeners().add(l);
        Map<Geometry, EditGeom> mapping = map.setGeometries(ring1, null);
        mapping.putAll(map.addGeometry(ring2, null));

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     */
    @Test
    public void testDeleteCoords() {
        
        GeometryFactory factory=new GeometryFactory();
        LinearRing ring1=createShellRing(factory, 10);
        LinearRing ring2=createShellRing(factory, 10);
        LinearRing ring3=createShellRing(factory, 10);
        EditBlackboard map = new EditBlackboard(SCREEN.x,SCREEN.y, transform, layerToWorld);
        EventListener l=new EventListener();
        map.getListeners().add(l);
        Map<Geometry, EditGeom> mapping = map.setGeometries(ring1, null);
        mapping.putAll(map.addGeometry(ring2, null));

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     * </p>
     * @param xy Two dimensional ordiantes.
     * @return Polygon
     */
    public Polygon polygon( int[] xy ){
        LinearRing shell = ring( xy );        
        return gf.createPolygon( shell, null );        
    }

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     */
    public Polygon polygon( int[] xy, int []holes[] ){
        if( holes == null || holes.length == 0){
           return polygon( xy );
        }
        LinearRing shell = ring( xy );        
        
        LinearRing[] rings = new LinearRing[holes.length];


        for (int i = 0; i < xy.length; i++) {
            rings[i] = ring(holes[i]);

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