public KMLRasterTranslator(ContentHandler handler) {
super(handler);
}
public void encode(Object o) throws IllegalArgumentException {
Layer layer = (Layer) o;
int mapLayerOrder = mapContent.layers().indexOf(layer);
if (isStandAlone()) {
start("kml");
}
//get the lat lon bbox
ReferencedEnvelope box = new ReferencedEnvelope(mapContent.getRenderingArea());
boolean reprojectBBox = (box.getCoordinateReferenceSystem() != null)
&& !CRS.equalsIgnoreMetadata(box.getCoordinateReferenceSystem(),
DefaultGeographicCRS.WGS84);
if (reprojectBBox) {
try {
box = box.transform(DefaultGeographicCRS.WGS84, true);
} catch (Exception e) {
throw new ServiceException("Could not transform bbox to WGS84", e,
"ReprojectionError", "");
}
}
// start("Document");
// element("name", Layer.getTitle());
// start the folder naming it 'layer_<mapLayerOrder>', this is
// necessary for a GroundOverlay
start("Folder");
String kmltitle = (String) mapContent.getRequest().getFormatOptions().get("kmltitle");
element("name", (kmltitle != null && mapContent.layers().size() <= 1 ? kmltitle : "layer_" + mapLayerOrder));
element("description", layer.getTitle());
if (lookAtOpts != null) {
if (box != null) {
KMLLookAtTransformer tx;
tx = new KMLLookAtTransformer(box, getIndentation(), getEncoding());
Translator translator = tx.createTranslator(contentHandler);
translator.encode(lookAtOpts);
}
}
start("GroundOverlay");
// element( "name", feature.getID() );
element("name", layer.getTitle());
element("drawOrder", Integer.toString(mapLayerOrder));
// encode the icon
start("Icon");
encodeHref(layer);
element("viewRefreshMode", "never");
element("viewBoundScale", "0.75");
end("Icon");
// encde the bounding box
start("LatLonBox");
element("north", Double.toString(box.getMaxY()));
element("south", Double.toString(box.getMinY()));
element("east", Double.toString(box.getMaxX()));
element("west", Double.toString(box.getMinX()));
end("LatLonBox");
end("GroundOverlay");
// if the kmplacemark format option is true, add placemarks to the output
boolean kmplacemark = KMLUtils.getKmplacemark(mapContent.getRequest(), wms);
if (kmplacemark) {
SimpleFeatureCollection features = null;
try {
features = KMLUtils.loadFeatureCollection(
(SimpleFeatureSource) layer.getFeatureSource(), layer,
mapContent, wms, scaleDenominator);
} catch (Exception ex) {
String msg = "Error getting features.";
LOGGER.log(Level.WARNING, msg, ex);
}
if (features != null && features.size() > 0) {
Geometry geom = null;
Geometry centroidGeom = null;
// get geometry of the area of interest
Envelope aoi = mapContent.getRenderingArea();
GeometryFactory factory = new GeometryFactory();
Geometry displayGeom = factory.toGeometry(new Envelope(aoi.getMinX(), aoi
.getMaxX(), aoi.getMinY(), aoi.getMaxY()));
// get the styles for this feature
SimpleFeatureType featureType = features.getSchema();
FeatureTypeStyle[] fts = KMLUtils.filterFeatureTypeStyles(layer.getStyle(),
featureType);
SimpleFeatureIterator iter = features.features();
try {
while (iter.hasNext()) {
SimpleFeature ftr = iter.next();
geom = (Geometry) ftr.getDefaultGeometry();
List<Symbolizer> symbolizers = filterSymbolizers(ftr, fts);
if (symbolizers.size() != 0)
encodeStyle(ftr, layer.getStyle(), symbolizers);
// if this is a multipolygon, get the largest polygon
// that intersects the AOI
if (geom instanceof MultiPolygon) {
double maxSize = -1;
int numGeoms = geom.getNumGeometries();
for (int i = 0; i < numGeoms; i++) {
Polygon poly = (Polygon) geom.getGeometryN(i);
if (poly.getArea() > maxSize) {
if (displayGeom.intersects(poly)) {
geom = poly;
maxSize = poly.getArea();
}
}
}
}
Geometry g1 = displayGeom.intersection(geom);
// skip if the geometry is not in the AOI
if (g1.isEmpty())
continue;
centroidGeom = g1.getCentroid();
encodePlacemark(ftr, layer.getStyle(), symbolizers, centroidGeom, lookAtOpts);
}
}
finally {
iter.close();
}