Examples with StreamingRenderer org.geotools.renderer.lite.StreamingRenderer used on opensource projects

Example 1 with StreamingRenderer

use of org.geotools.renderer.lite.StreamingRenderer in project polymap4-core by Polymap4.

the class FeatureRenderProcessor2 method getMapRequest.

@Override
public void getMapRequest(GetMapRequest request, ProcessorContext context) throws Exception {
    long start = System.currentTimeMillis();
    // result
    BufferedImage result = new BufferedImage(request.getWidth(), request.getHeight(), TYPE_4BYTE_ABGR);
    result.setAccelerationPriority(1);
    final Graphics2D g = result.createGraphics();
    // log.info( "IMAGE: accelerated=" + result.getCapabilities( g.getDeviceConfiguration() ).isAccelerated() );
    MapContent mapContent = new MapContent();
    try {
        // MapContent
        mapContent.getViewport().setCoordinateReferenceSystem(request.getBoundingBox().getCoordinateReferenceSystem());
        mapContent.addLayer(new FeatureLayer(fs.get(), style.get()));
        StreamingRenderer renderer = new NoThreadStreamingRenderer();
        // error handler
        renderer.addRenderListener(new RenderListener() {

            @Override
            public void featureRenderer(SimpleFeature feature) {
            }

            @Override
            public void errorOccurred(Exception e) {
                if (e.getMessage() == null || e.getMessage().contains("Error transforming bbox") || e.getMessage().contains("too close to a pole")) {
                    log.warn("Renderer: " + e.getMessage());
                } else {
                    log.error("Renderer error: ", e);
                    drawErrorMsg(g, "Unable to render.", e);
                }
            }
        });
        // rendering hints
        RenderingHints hints = new RenderingHints(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
        hints.add(new RenderingHints(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON));
        hints.add(new RenderingHints(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON));
        hints.add(new RenderingHints(RenderingHints.KEY_FRACTIONALMETRICS, RenderingHints.VALUE_FRACTIONALMETRICS_ON));
        // hints.add( new RenderingHints(
        // RenderingHints.KEY_TEXT_ANTIALIASING,
        // RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_HRGB ) );
        // geoserver compatibility to support *env* in SLD functions
        double scale = RendererUtilities.calculateOGCScale(request.getBoundingBox(), request.getWidth(), Collections.EMPTY_MAP);
        EnvFunction.setLocalValue("wms_scale_denominator", scale);
        renderer.setJava2DHints(hints);
        g.setRenderingHints(hints);
        // render params
        Map rendererParams = new HashMap();
        rendererParams.put("optimizedDataLoadingEnabled", Boolean.TRUE);
        renderer.setRendererHints(rendererParams);
        renderer.setMapContent(mapContent);
        Rectangle paintArea = new Rectangle(request.getWidth(), request.getHeight());
        renderer.paint(g, paintArea, request.getBoundingBox());
    } catch (Throwable e) {
        log.error("Renderer error: ", e);
        drawErrorMsg(g, "Unable to render.", e);
    } finally {
        mapContent.dispose();
        EnvFunction.clearLocalValues();
        if (g != null) {
            g.dispose();
        }
    }
    log.debug("   ...done: (" + (System.currentTimeMillis() - start) + "ms).");
    context.sendResponse(new ImageResponse(result));
}

Example 2 with StreamingRenderer

use of org.geotools.renderer.lite.StreamingRenderer in project spatial-portal by AtlasOfLivingAustralia.

the class AreaUploadShapefileWizardController method executeShapeImageRenderer.

private void executeShapeImageRenderer(Filter filter) {
    try {
        LOGGER.debug("Generating image");
        SimpleFeatureCollection features1;
        if (filter == null) {
            features1 = source.getFeatures();
        } else {
            features1 = source.getFeatures(filter);
        }
        // Create a map content and add our shapefile to it
        MapContent map = new MapContent();
        org.geotools.styling.Style style = SLD.createSimpleStyle(source.getSchema());
        Layer layer = new FeatureLayer(features1, style);
        map.addLayer(layer);
        GTRenderer renderer = new StreamingRenderer();
        renderer.setMapContent(map);
        int imageWidth = 800;
        int imageHeight = 300;
        Rectangle imageBounds;
        ReferencedEnvelope mapBounds;
        mapBounds = map.getMaxBounds();
        double heightToWidth = mapBounds.getSpan(1) / mapBounds.getSpan(0);
        if (heightToWidth * imageWidth > imageHeight) {
            imageBounds = new Rectangle(0, 0, (int) Math.round(imageHeight / heightToWidth), imageHeight);
        } else {
            imageBounds = new Rectangle(0, 0, imageWidth, (int) Math.round(imageWidth * heightToWidth));
        }
        BufferedImage image = new BufferedImage(imageBounds.width, imageBounds.height, BufferedImage.TYPE_INT_RGB);
        Graphics2D gr = image.createGraphics();
        gr.setPaint(Color.WHITE);
        gr.fill(imageBounds);
        renderer.paint(gr, imageBounds, mapBounds);
        img.setContent(image);
    } catch (Exception e) {
        LOGGER.debug("Unable to generate image for selected shapefile", e);
    }
}

Example 3 with StreamingRenderer

use of org.geotools.renderer.lite.StreamingRenderer in project sldeditor by robward-scisys.

the class SLDMapPane method doSetRenderer.

/**
 * Do set renderer.
 *
 * @param newRenderer the new renderer
 */
private void doSetRenderer(GTRenderer newRenderer) {
    if (newRenderer != null) {
        Map<Object, Object> hints = newRenderer.getRendererHints();
        if (hints == null) {
            hints = new HashMap<Object, Object>();
        }
        if (newRenderer instanceof StreamingRenderer) {
            if (hints.containsKey(StreamingRenderer.LABEL_CACHE_KEY)) {
                labelCache = (LabelCache) hints.get(StreamingRenderer.LABEL_CACHE_KEY);
            } else {
                labelCache = new LabelCacheImpl();
                hints.put(StreamingRenderer.LABEL_CACHE_KEY, labelCache);
            }
        }
        newRenderer.setRendererHints(hints);
        if (mapContent != null) {
            newRenderer.setMapContent(mapContent);
        }
    }
    renderer = newRenderer;
}

Example 4 with StreamingRenderer

use of org.geotools.renderer.lite.StreamingRenderer in project polymap4-core by Polymap4.

the class RasterRenderProcessor method getMapRequest.

@Override
public void getMapRequest(GetMapRequest request, ProcessorContext context) throws Exception {
    // result
    BufferedImage result = new BufferedImage(request.getWidth(), request.getHeight(), TYPE_4BYTE_ABGR);
    final Graphics2D g = result.createGraphics();
    MapContent mapContent = new MapContent();
    try {
        mapContent.getViewport().setCoordinateReferenceSystem(request.getBoundingBox().getCoordinateReferenceSystem());
        mapContent.addLayer(new GridReaderLayer(reader, style.get()));
        // renderer
        StreamingRenderer renderer = new StreamingRenderer();
        // error handler
        renderer.addRenderListener(new RenderListener() {

            public void featureRenderer(SimpleFeature feature) {
            }

            public void errorOccurred(Exception e) {
                log.error("Renderer error: ", e);
                drawErrorMsg(g, "Fehler bei der Darstellung.", e);
            }
        });
        // rendering hints
        RenderingHints hints = new RenderingHints(KEY_RENDERING, VALUE_RENDER_QUALITY);
        hints.add(new RenderingHints(KEY_ANTIALIASING, VALUE_ANTIALIAS_ON));
        hints.add(new RenderingHints(KEY_TEXT_ANTIALIASING, VALUE_TEXT_ANTIALIAS_ON));
        renderer.setJava2DHints(hints);
        // render params
        Map rendererParams = new HashMap();
        rendererParams.put("optimizedDataLoadingEnabled", Boolean.TRUE);
        renderer.setRendererHints(rendererParams);
        renderer.setMapContent(mapContent);
        Rectangle paintArea = new Rectangle(request.getWidth(), request.getHeight());
        renderer.paint(g, paintArea, request.getBoundingBox());
    } catch (Throwable e) {
        log.error("Renderer error: ", e);
        drawErrorMsg(g, null, e);
    } finally {
        mapContent.dispose();
        EnvFunction.clearLocalValues();
        if (g != null) {
            g.dispose();
        }
    }
    context.sendResponse(new ImageResponse(result));
}

Example 5 with StreamingRenderer

use of org.geotools.renderer.lite.StreamingRenderer in project dhis2-core by dhis2.

the class MapUtils method render.

// -------------------------------------------------------------------------
// Map
// -------------------------------------------------------------------------
public static BufferedImage render(InternalMap map, Integer maxWidth, Integer maxHeight) {
    MapContent mapContent = new MapContent();
    for (InternalMapLayer mapLayer : map.getLayers()) {
        for (InternalMapObject mapObject : mapLayer.getMapObjects()) {
            mapContent.addLayer(createFeatureLayerFromMapObject(mapObject));
        }
    }
    // Create a renderer for this map
    GTRenderer renderer = new StreamingRenderer();
    renderer.setMapContent(mapContent);
    // Calculate image height
    ReferencedEnvelope mapBounds = mapContent.getMaxBounds();
    double widthToHeightFactor = mapBounds.getSpan(0) / mapBounds.getSpan(1);
    int[] widthHeight = getWidthHeight(maxWidth, maxHeight, LegendSet.LEGEND_TOTAL_WIDTH, TITLE_HEIGHT, widthToHeightFactor);
    // LegendSet.LEGEND_TOTAL_WIDTH;
    Rectangle imageBounds = new Rectangle(0, 0, widthHeight[0], widthHeight[1]);
    // Create an image and get the graphics context from it
    BufferedImage image = new BufferedImage(imageBounds.width, imageBounds.height, BufferedImage.TYPE_INT_ARGB);
    Graphics2D graphics = (Graphics2D) image.getGraphics();
    graphics.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
    renderer.paint(graphics, imageBounds, mapBounds);
    mapContent.dispose();
    return image;
}