Examples with Expression org.opengis.filter.Expression used on opensource projects

Example 6 with Expression

use of org.opengis.filter.Expression in project geotoolkit by Geomatys.

the class GeometryExpressionTest method bufferTest.

/**
 * Test a buffer expression around geometry.
 */
@Test
public void bufferTest() throws PortrayalException, IOException {
    final CoordinateReferenceSystem crs = CommonCRS.WGS84.normalizedGeographic();
    final FeatureTypeBuilder ftb = new FeatureTypeBuilder();
    ftb.setName("test");
    ftb.addAttribute(Point.class).setName("geom").setCRS(crs).addRole(AttributeRole.DEFAULT_GEOMETRY);
    final FeatureType type = ftb.build();
    final Point point = GO2Utilities.JTS_FACTORY.createPoint(new Coordinate(0, 0));
    JTS.setCRS(point, crs);
    final Feature feature = type.newInstance();
    feature.setPropertyValue("geom", point);
    final Expression geomExp = FF.function("buffer", FF.property("geom"), FF.literal(10));
    final Fill fill = SF.fill(Color.RED);
    final PolygonSymbolizer symbolizer = SF.polygonSymbolizer("", geomExp, DEFAULT_DESCRIPTION, DEFAULT_UOM, null, fill, DEFAULT_DISPLACEMENT, LITERAL_ZERO_FLOAT);
    final MutableStyle style = SF.style(symbolizer);
    final MapLayers context = MapBuilder.createContext();
    final MapLayer fml = MapBuilder.createLayer(FeatureStoreUtilities.collection(feature));
    fml.setStyle(style);
    context.getComponents().add(fml);
    final GeneralEnvelope env = new GeneralEnvelope(crs);
    env.setRange(0, -20, +20);
    env.setRange(1, -20, +20);
    final CanvasDef canvasDef = new CanvasDef();
    canvasDef.setEnvelope(env);
    canvasDef.setDimension(new Dimension(40, 40));
    canvasDef.setBackground(Color.WHITE);
    final SceneDef sceneDef = new SceneDef(context);
    final BufferedImage image = DefaultPortrayalService.portray(canvasDef, sceneDef);
    // we must obtain a red point of 10pixel width at image center
    final int red = Color.RED.getRGB();
    final int white = Color.WHITE.getRGB();
    Assert.assertEquals(white, image.getRGB(20, 9));
    Assert.assertEquals(red, image.getRGB(20, 11));
    Assert.assertEquals(red, image.getRGB(20, 20));
    Assert.assertEquals(red, image.getRGB(20, 29));
    Assert.assertEquals(white, image.getRGB(20, 31));
    Assert.assertEquals(white, image.getRGB(9, 20));
    Assert.assertEquals(red, image.getRGB(11, 20));
    Assert.assertEquals(red, image.getRGB(20, 20));
    Assert.assertEquals(red, image.getRGB(29, 20));
    Assert.assertEquals(white, image.getRGB(31, 20));
}

Example 7 with Expression

use of org.opengis.filter.Expression in project geotoolkit by Geomatys.

the class TextSymbolizerTest method pointLabelTest.

/**
 * Render a label at check it is correctly located in the image.
 */
@Test
public void pointLabelTest() throws Exception {
    final FeatureTypeBuilder ftb = new FeatureTypeBuilder();
    ftb.setName("test");
    ftb.addAttribute(Point.class).setName("geom").setCRS(CommonCRS.defaultGeographic()).addRole(AttributeRole.DEFAULT_GEOMETRY);
    final FeatureType type = ftb.build();
    final Feature feature = type.newInstance();
    feature.setPropertyValue("geom", GF.createPoint(new Coordinate(0, 0)));
    final FeatureSet collection = new InMemoryFeatureSet(type, Arrays.asList(feature));
    // text symbolizer style
    final String name = "mySymbol";
    final Description desc = DEFAULT_DESCRIPTION;
    // use the default geometry of the feature
    final String geometry = null;
    final Unit unit = Units.POINT;
    final Expression label = FF.literal("LABEL");
    final Font font = SF.font(FF.literal("Arial"), FONT_STYLE_ITALIC, FONT_WEIGHT_BOLD, FF.literal(14));
    final LabelPlacement placement = SF.pointPlacement();
    final Halo halo = SF.halo(Color.WHITE, 0);
    final Fill fill = SF.fill(Color.BLUE);
    final TextSymbolizer symbol = SF.textSymbolizer(name, geometry, desc, unit, label, font, placement, halo, fill);
    final MutableStyle style = SF.style(symbol);
    final MapLayer layer = MapBuilder.createLayer(collection);
    layer.setStyle(style);
    final MapLayers context = MapBuilder.createContext();
    context.getComponents().add(layer);
    final GeneralEnvelope env = new GeneralEnvelope(CommonCRS.defaultGeographic());
    env.setRange(0, -180, +180);
    env.setRange(1, -90, +90);
    final Hints hints = new Hints();
    hints.put(GO2Hints.KEY_COLOR_MODEL, ColorModel.getRGBdefault());
    final SceneDef scenedef = new SceneDef(context, hints);
    final CanvasDef canvasdef = new CanvasDef(new Dimension(360, 180), env);
    canvasdef.setBackground(Color.WHITE);
    final BufferedImage buffer = DefaultPortrayalService.portray(canvasdef, scenedef);
    // ImageIO.write(buffer, "PNG", new File("test.png"));
    // we expect to have a blue label at the center of the image
    final int[] pixel = new int[4];
    final int[] blue = new int[] { 0, 0, 255, 255 };
    final Raster raster = buffer.getData();
    boolean found = false;
    for (int x = 160; x < 200; x++) {
        // should be exactly at the center
        raster.getPixel(x, 90, pixel);
        if (Arrays.equals(blue, pixel)) {
            found = true;
        }
    }
    assertTrue("label not found", found);
}

Example 8 with Expression

use of org.opengis.filter.Expression in project geotoolkit by Geomatys.

the class StyleCacheTest method GraphicCacheTest.

@Test
public void GraphicCacheTest() throws Exception {
    // Test a complex graphic
    final Expression Lookup = FF.property("POP_CNTRY");
    final List<InterpolationPoint> values = new ArrayList<InterpolationPoint>();
    // test color interpolation ---------------------------------------------
    values.clear();
    values.add(new DefaultInterpolationPoint(0d, FF.literal(3d)));
    values.add(new DefaultInterpolationPoint(500000000d, FF.literal(50d)));
    Interpolate interpolate = new DefaultInterpolate(Lookup, values, Method.COLOR, Mode.CUBIC, null);
    List<GraphicalSymbol> symbols = new ArrayList<GraphicalSymbol>();
    symbols.add(SF.mark(StyleConstants.MARK_CIRCLE, SF.fill(Color.RED), SF.stroke()));
    Graphic graphic = SF.graphic(symbols, StyleConstants.DEFAULT_GRAPHIC_OPACITY, interpolate, StyleConstants.DEFAULT_GRAPHIC_ROTATION, StyleConstants.DEFAULT_ANCHOR_POINT, StyleConstants.DEFAULT_DISPLACEMENT);
    CachedGraphic cached = CachedGraphic.cache(graphic);
    assertFalse(cached.isStatic());
    assertEquals(VisibilityState.DYNAMIC, cached.isStaticVisible());
}

Example 9 with Expression

use of org.opengis.filter.Expression in project geotoolkit by Geomatys.

the class PatternSymbolizerTest method testXml.

/**
 * Test Jaxb xml support.
 */
@Test
public void testXml() throws JAXBException, IOException {
    final MutableStyleFactory SF = GO2Utilities.STYLE_FACTORY;
    final FilterFactory2 FF = GO2Utilities.FILTER_FACTORY;
    final Map<Expression, List<Symbolizer>> ranges = new LinkedHashMap<>();
    ranges.put(FF.literal(-1000), Arrays.asList(SF.polygonSymbolizer(null, SF.fill(Color.BLUE), null)));
    ranges.put(FF.literal(-500), Arrays.asList(SF.polygonSymbolizer(null, SF.fill(Color.RED), null)));
    ranges.put(FF.literal(-100), Arrays.asList(SF.polygonSymbolizer(null, SF.fill(Color.GREEN), null)));
    ranges.put(FF.literal(100), Arrays.asList(SF.polygonSymbolizer(null, SF.fill(Color.YELLOW), null)));
    ranges.put(FF.literal(1000), Arrays.asList(SF.polygonSymbolizer(null, SF.fill(Color.GRAY), null)));
    final PatternSymbolizer ps = new PatternSymbolizer(FF.literal(0), ranges, ThreshholdsBelongTo.PRECEDING);
    final MutableStyle style = GO2Utilities.STYLE_FACTORY.style(ps);
    final Path path = Files.createTempFile("xml", ".xml");
    IOUtilities.deleteOnExit(path);
    new StyleXmlIO().writeStyle(path, style, Specification.StyledLayerDescriptor.V_1_1_0);
}

Example 10 with Expression

use of org.opengis.filter.Expression in project geotoolkit by Geomatys.

the class CachedStrokeSimple method getJ2DStroke.

/**
 * Get the java2D Stroke for the given feature.
 *
 * @param candidate : evaluate stroke with the given feature
 * @param coeff : use to adjust stroke size, if in display unit value equals 1
 * @return Java2D Stroke
 */
public java.awt.Stroke getJ2DStroke(final Object candidate, float coeff) {
    evaluate();
    coeff = Math.abs(coeff);
    java.awt.Stroke j2dStroke = cachedStroke;
    // if stroke is null it means something is dynamic
    if (j2dStroke == null || coeff != 1) {
        float[] candidateDashes = cachedDashes;
        float candidateOffset = cachedDashOffset;
        int candidateCap = cachedCap;
        int candidateJoin = cachedJoin;
        float candidateWidth = cachedWidth;
        if (Float.isNaN(candidateOffset)) {
            final Expression expOffset = styleElement.getDashOffset();
            candidateOffset = GO2Utilities.evaluate(expOffset, candidate, Float.class, 1f);
        }
        if (candidateCap == Integer.MAX_VALUE) {
            final Expression expCap = styleElement.getLineCap();
            final String cap = GO2Utilities.evaluate(expCap, null, String.class, STROKE_CAP_BUTT_STRING);
            if (STROKE_CAP_BUTT_STRING.equalsIgnoreCase(cap))
                candidateCap = BasicStroke.CAP_BUTT;
            else if (STROKE_CAP_SQUARE_STRING.equalsIgnoreCase(cap))
                candidateCap = BasicStroke.CAP_SQUARE;
            else if (STROKE_CAP_ROUND_STRING.equalsIgnoreCase(cap))
                candidateCap = BasicStroke.CAP_ROUND;
            else
                candidateCap = BasicStroke.CAP_BUTT;
        }
        if (candidateJoin == Integer.MAX_VALUE) {
            final Expression expJoin = styleElement.getLineJoin();
            final String join = GO2Utilities.evaluate(expJoin, null, String.class, STROKE_JOIN_BEVEL_STRING);
            if (STROKE_JOIN_BEVEL_STRING.equalsIgnoreCase(join))
                candidateJoin = BasicStroke.JOIN_BEVEL;
            else if (STROKE_JOIN_MITRE_STRING.equalsIgnoreCase(join))
                candidateJoin = BasicStroke.JOIN_MITER;
            else if (STROKE_JOIN_ROUND_STRING.equalsIgnoreCase(join))
                candidateJoin = BasicStroke.JOIN_ROUND;
            else
                candidateJoin = BasicStroke.JOIN_BEVEL;
        }
        if (Float.isNaN(candidateWidth)) {
            final Expression expWidth = styleElement.getWidth();
            candidateWidth = GO2Utilities.evaluate(expWidth, candidate, Float.class, 1f);
            if (candidateWidth < 0) {
                candidateWidth = 0f;
            }
        }
        if (candidateDashes != null) {
            float[] s = candidateDashes.clone();
            for (int i = 0; i < s.length; i++) {
                s[i] = s[i] * coeff;
            }
            j2dStroke = new BasicStroke(candidateWidth * coeff, candidateCap, candidateJoin, 1f, s, candidateOffset);
        } else {
            j2dStroke = new BasicStroke(candidateWidth * coeff, candidateCap, candidateJoin, 10f);
        }
    }
    return j2dStroke;
}