CompositeLayeringTest.java example

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geotools-master
package org.geotools.renderer.lite;

import static java.awt.RenderingHints.KEY_ANTIALIASING;
import static java.awt.RenderingHints.VALUE_ANTIALIAS_ON;

import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import java.awt.RenderingHints;
import java.awt.image.BufferedImage;
import java.io.File;

import org.geotools.data.property.PropertyDataStore;
import org.geotools.data.simple.SimpleFeatureSource;
import org.geotools.geometry.jts.ReferencedEnvelope;
import org.geotools.image.test.ImageAssert;
import org.geotools.map.FeatureLayer;
import org.geotools.map.MapContent;
import org.geotools.styling.Style;
import org.geotools.test.TestData;
import org.junit.Before;
import org.junit.Test;

public class CompositeLayeringTest {

    private static final long TIME = 40000;

    SimpleFeatureSource fs;

    SimpleFeatureSource bfs;

    ReferencedEnvelope bounds;

    @Before
    public void setUp() throws Exception {
        File property = new File(TestData.getResource(this, "square.properties").toURI());
        PropertyDataStore ds = new PropertyDataStore(property.getParentFile());
        fs = ds.getFeatureSource("square");
        bfs = ds.getFeatureSource("bigsquare");
        bounds = fs.getBounds();
        bounds.expandBy(0.2, 0.2);

        // System.setProperty("org.geotools.test.interactive", "true");

    }

    @Test
    public void testInternalBuffer() throws Exception {
        runSingleLayerTest("compositeInternalBuffer.sld");
    }

    private void runSingleLayerTest(String styleName) throws Exception {
        runSingleLayerTest(styleName, 100);
    }

    private void runSingleLayerTest(String styleName, int threshold) throws Exception {
        Style style = RendererBaseTest.loadStyle(this, styleName);

        MapContent mc = new MapContent();
        mc.addLayer(new FeatureLayer(fs, style));

        StreamingRenderer renderer = new StreamingRenderer();
        renderer.setMapContent(mc);
        renderer.setJava2DHints(new RenderingHints(KEY_ANTIALIASING, VALUE_ANTIALIAS_ON));

        // prepare an opaque background
        BufferedImage image = new BufferedImage(256, 256, BufferedImage.TYPE_3BYTE_BGR);
        Graphics2D graphics = image.createGraphics();
        graphics.setColor(Color.lightGray);
        graphics.fillRect(0, 0, image.getWidth(), image.getHeight());

        renderer.paint(graphics, new Rectangle(0, 0, image.getWidth(), image.getHeight()), bounds);

        File reference = new File("./src/test/resources/org/geotools/renderer/lite/test-data/"
                + styleName + ".png");
        ImageAssert.assertEquals(reference, image, threshold);
    }
}