@Test
public void testRepeatedEnvelopeExpansion() throws Exception {
final List<Filter> filters = new ArrayList<Filter>();
SimpleFeatureSource testSource =
new CollectionFeatureSource(createLineCollection()) {
@Override
public SimpleFeatureCollection getFeatures(Query query) {
filters.add(query.getFilter());
return super.getFeatures(query);
}
};
StyleBuilder sb = new StyleBuilder();
Style style20 = sb.createStyle(sb.createLineSymbolizer(20));
Style style10 = sb.createStyle(sb.createLineSymbolizer(10));
MapContent mc = new MapContent();
mc.addLayer(new FeatureLayer(testSource, style20));
mc.addLayer(new FeatureLayer(testSource, style10));
StreamingRenderer sr = new StreamingRenderer();
sr.setMapContent(mc);
BufferedImage bi = new BufferedImage(100, 100, BufferedImage.TYPE_3BYTE_BGR);
Graphics2D graphics = bi.createGraphics();
sr.paint(
graphics,
new Rectangle(0, 0, 100, 100),
new ReferencedEnvelope(0, 100, 0, 100, DefaultGeographicCRS.WGS84));
graphics.dispose();
System.out.println(filters);
assertEquals(2, filters.size());
Filter f1 = filters.get(0);
assertTrue(f1 instanceof BBOX);
BoundingBox bbox1 = ((BBOX) f1).getBounds();
ReferencedEnvelope expected =
new ReferencedEnvelope(-11, 111, -11, 111, DefaultGeographicCRS.WGS84);
assertEquals(expected, bbox1);
Filter f2 = filters.get(1);
assertTrue(f2 instanceof BBOX);
BoundingBox bbox2 = ((BBOX) f2).getBounds();
assertEquals(new ReferencedEnvelope(-6, 106, -6, 106, DefaultGeographicCRS.WGS84), bbox2);
}
public static Symbolizer[] getSymbolizers(
Class<? extends Geometry> type, Color baseColor, boolean useTransparency) {
StyleBuilder builder = new StyleBuilder();
Symbolizer[] syms = new Symbolizer[1];
if (LineString.class.isAssignableFrom(type) || MultiLineString.class.isAssignableFrom(type))
syms[0] = builder.createLineSymbolizer(baseColor, 2);
if (Point.class.isAssignableFrom(type) || MultiPoint.class.isAssignableFrom(type)) {
PointSymbolizer point = builder.createPointSymbolizer(builder.createGraphic());
FilterFactory ff = builder.getFilterFactory();
// point.getGraphic().getMarks()[0].setSize((Expression) ff.literal(10));
point.getGraphic().setSize(ff.literal(10));
Mark mark = (Mark) point.getGraphic().graphicalSymbols().get(0);
mark.setFill(builder.createFill(baseColor));
syms[0] = point;
}
if (Polygon.class.isAssignableFrom(type) || MultiPolygon.class.isAssignableFrom(type)) {
syms[0] =
builder.createPolygonSymbolizer(
builder.createStroke(baseColor, 2),
builder.createFill(baseColor, useTransparency ? .6 : 1.0));
}
return syms;
}
@Test
public void testScreenMapMemory() {
// build a feature source with two zig-zag line occupying the same position
LiteCoordinateSequence cs =
new LiteCoordinateSequence(new double[] {0, 0, 1, 1, 2, 0, 3, 1, 4, 0});
SimpleFeature zigzag1 =
SimpleFeatureBuilder.build(
testLineFeatureType, new Object[] {gf.createLineString(cs)}, "zz1");
SimpleFeature zigzag2 =
SimpleFeatureBuilder.build(
testLineFeatureType, new Object[] {gf.createLineString(cs)}, "zz2");
DefaultFeatureCollection fc = new DefaultFeatureCollection();
fc.add(zigzag1);
fc.add(zigzag2);
SimpleFeatureSource zzSource = new CollectionFeatureSource(fc);
// prepare the map
MapContent mc = new MapContent();
StyleBuilder sb = new StyleBuilder();
mc.addLayer(new FeatureLayer(zzSource, sb.createStyle(sb.createLineSymbolizer())));
StreamingRenderer sr = new StreamingRenderer();
sr.setMapContent(mc);
// collect rendered features
final List<SimpleFeature> features = new ArrayList<SimpleFeature>();
RenderListener renderedFeaturesCollector =
new RenderListener() {
@Override
public void featureRenderer(SimpleFeature feature) {
features.add(feature);
}
@Override
public void errorOccurred(Exception e) {
// nothing to do
}
};
sr.addRenderListener(renderedFeaturesCollector);
BufferedImage bi = new BufferedImage(1, 1, BufferedImage.TYPE_3BYTE_BGR);
Graphics2D graphics = bi.createGraphics();
// have the lines be smaller than a 1/3 of a pixel
sr.paint(
graphics,
new Rectangle(0, 0, 1, 1),
new ReferencedEnvelope(0, 8, 0, 8, DefaultGeographicCRS.WGS84));
// check we only rendered one feature
assertEquals(1, features.size());
assertEquals("zz1", features.get(0).getID());
// now have the lines be big enough to be painted instead
features.clear();
sr.paint(
graphics,
new Rectangle(0, 0, 1, 1),
new ReferencedEnvelope(0, 1, 0, 1, DefaultGeographicCRS.WGS84));
assertEquals(2, features.size());
assertEquals("zz1", features.get(0).getID());
assertEquals("zz2", features.get(1).getID());
graphics.dispose();
}
private Style createLineStyle() {
StyleBuilder sb = new StyleBuilder();
return sb.createStyle(sb.createLineSymbolizer());
}
