Package com.vividsolutions.jts.io

Examples of com.vividsolutions.jts.io.WKTReader

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                wkt = rs.getString(column + "_inline");
            }
            catch(SQLException e) {}
           
            if (wkt != null) {
                return new WKTReader(factory).read(wkt);
            }
           
            //in "locator" form the geometry comes across as text
           
            //figure out index so we can inspect type
            int index = -1;
            for (int i = 0; i < rs.getMetaData().getColumnCount(); i++) {
                if (column.equals(rs.getMetaData().getColumnName(i+1))) {
                    index = i+1;
                    break;
                }
            }
           
            if ("java.lang.String".equals(rs.getMetaData().getColumnClassName(index))) {
                wkt = rs.getString(index);
                if (wkt == null) {
                    return null;
                }
                return new WKTReader(factory).read(wkt);
            }
           
            //assume its a clob
           
            Clob clob = rs.getClob(column);
            if (clob == null) {
                return null;
            }
            InputStream in = clob.getAsciiStream();
            try {
                return new WKTReader(factory).read(new InputStreamReader(in));
            }
            finally {
                if (in != null) in.close();
            }
        }
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//        example3();
    }

    public static void example1() throws Exception {
        // octo start
        WKTReader wktReader = new WKTReader(new GeometryFactory());
        Geometry geom = wktReader.read("MULTIPOINT (1 1, 5 4, 7 9, 5 5, 2 2)");
       
        Name name = new NameImpl("tutorial","octagonalEnvelope");
        Process process = Processors.createProcess( name );
       
        ProcessExecutor engine = Processors.newProcessExecutor(2);
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        // param end
    }
   
    public static void example2() throws Exception {

        WKTReader reader = new WKTReader(new GeometryFactory());

        Geometry geom1 = (Polygon) reader.read("POLYGON((20 10, 30 0, 40 10, 30 20, 20 10))");
        Double buffer = new Double(213.78);

        Map<String, Object> map = new HashMap<String, Object>();
        map.put(BufferFactory.GEOM1.key, geom1);
        map.put(BufferFactory.BUFFER.key, buffer);
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        // crossing the dateline
        mercatorEnvelope.translate(mercatorEnvelope.getWidth() / 2, 0);

        // a geometry that will cross the dateline and sitting in the same area as the
        // rendering envelope
        Geometry g = new WKTReader().read("LINESTRING(170 -40, 190 40)");

        // make sure the geometry is not wrapped
        ProjectionHandler handler = ProjectionHandlerFinder.getHandler(mercatorEnvelope, WGS84, true);
        assertTrue(handler.requiresProcessing( g));
        Geometry preProcessed = handler.preProcess(g);
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    @Test
    public void testWrapGeometrySmall() throws Exception {
        // projected dateline CRS
        CoordinateReferenceSystem FIJI = CRS.decode("EPSG:3460", true);
        // a small geometry that will cross the dateline
        Geometry g = new WKTReader().read("POLYGON ((2139122 5880020, 2139122 5880030, 2139922 5880030, 2139122 5880020))");
        Geometry original = (Geometry) g.clone();

        // rendering bounds only slightly bigger than geometry
        ReferencedEnvelope world = new ReferencedEnvelope(178, 181, -1, 1, WGS84);
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    @Test
    public void testWorldLargeGeometry() throws Exception {
        ReferencedEnvelope world = new ReferencedEnvelope(-180, 180, -90, 90, WGS84);

        // a geometry close to the dateline
        Geometry g = new WKTReader()
                .read("POLYGON((-178 -90, -178 90, 178 90, 178 -90, -178 -90))");
        Geometry original = new WKTReader()
                .read("POLYGON((-178 -90, -178 90, 178 90, 178 -90, -178 -90))");

        // make sure the geometry is not wrapped, but it is preserved
        ProjectionHandler handler = ProjectionHandlerFinder.getHandler(world, WGS84, true);
        assertTrue(handler.requiresProcessing(g));
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    @Test
    public void testWrapGeometryLatLonMultipleTimes() throws Exception {
        ReferencedEnvelope renderingEnvelope = new ReferencedEnvelope(-90, 90, -580, 540, ED50_LATLON);

        // a geometry close to the dateline
        Geometry g = new WKTReader()
                .read("POLYGON((-74 -33, -29 -33, -29 5, -74 5, -74 -33))");

        // make sure the geometry is not wrapped, but it is preserved
        ProjectionHandler handler = ProjectionHandlerFinder.getHandler(renderingEnvelope, WGS84, true);
        assertTrue(handler.requiresProcessing(g));
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        ProjectionHandler handler = ProjectionHandlerFinder.getHandler(world, WGS84, true);

        // a geometry that will cross the dateline and sitting in the same area as the
        // rendering envelope (with wgs84 lon/latcoordinates)
        String wkt = "POLYGON((178 -80, 178 80, 182 80, 182 80, 178 -80))";
        Geometry g = new WKTReader().read(wkt);
        Geometry original = new WKTReader().read(wkt);
        MathTransform mt = CRS.findMathTransform(WGS84, ED50_LATLON);
        MathTransform prepared = handler.getRenderingTransform(CRS.findMathTransform(WGS84, ED50_LATLON));
        Geometry reprojected = JTS.transform(original, prepared);

       
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        ProjectionHandler handler = ProjectionHandlerFinder.getHandler(world, WGS84, true);

        // a geometry that will cross the dateline and sitting in the same area as the
        // rendering envelope (with wgs84 lon/latcoordinates)
        String wkt = "POLYGON((180 -90, 180 90, -180 90, -180 -90, 180 -90))";
        Geometry g = new WKTReader().read(wkt);
        MathTransform mt = CRS.findMathTransform(WGS84, ED50_LATLON);
        MathTransform prepared = handler.getRenderingTransform(mt);

       
        assertTrue(handler.requiresProcessing( g));
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        ProjectionHandler handler = ProjectionHandlerFinder.getHandler(world, WGS84, true);
       
        // a geometry that will cross the dateline and sitting in the same area as the
        // rendering envelope (with wgs84 lon/latcoordinates)
        String wkt = "POLYGON((178 -80, 178 80, 182 80, 182 80, 178 -80))";
        Geometry g = new WKTReader().read(wkt);
        Geometry original = new WKTReader().read(wkt);
        MathTransform mt = CRS.findMathTransform(WGS84, ED50);
        mt = handler.getRenderingTransform(mt);
        Geometry reprojected = JTS.transform(original, mt);

        // make sure the geometry is not wrapped, but it is preserved
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