/*
* This is part of Geomajas, a GIS framework, http://www.geomajas.org/.
*
* Copyright 2008-2011 Geosparc nv, http://www.geosparc.com/, Belgium.
*
* The program is available in open source according to the GNU Affero
* General Public License. All contributions in this program are covered
* by the Geomajas Contributors License Agreement. For full licensing
* details, see LICENSE.txt in the project root.
*/
package org.geomajas.internal.rendering.writer.svg;
import org.geomajas.internal.layer.feature.InternalFeatureImpl;
import org.geomajas.internal.rendering.writer.GraphicsWriter;
import org.geomajas.rendering.GraphicsDocument;
import org.geomajas.rendering.RenderException;
import org.geotools.geometry.jts.GeometryCoordinateSequenceTransformer;
import org.opengis.referencing.operation.TransformException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.vividsolutions.jts.geom.Geometry;
import com.vividsolutions.jts.geom.MultiPoint;
import com.vividsolutions.jts.geom.Point;
/**
* Writer for converting features to svg.
*
* @author Jan De Moerloose
* @author Pieter De Graef
*/
public class SvgFeatureWriter implements GraphicsWriter {
private final Logger log = LoggerFactory.getLogger(SvgFeatureWriter.class);
private GeometryCoordinateSequenceTransformer transformer;
public SvgFeatureWriter(GeometryCoordinateSequenceTransformer transformer) {
this.transformer = transformer;
}
public void writeObject(Object object, GraphicsDocument document, boolean asChild) throws RenderException {
try {
InternalFeatureImpl feature = (InternalFeatureImpl) object;
Geometry geom = feature.getGeometry();
if (feature.isClipped()) {
geom = feature.getClippedGeometry();
}
geom = transformer.transform(geom);
if (geom instanceof Point || geom instanceof MultiPoint) {
// write the enclosing group
document.writeElement("g", asChild);
document.writeAttribute("id", feature.getId());
// write the points
for (int i = 0; i < geom.getNumGeometries(); i++) {
document.writeObject(geom.getGeometryN(i), true);
document.writeAttribute("id", feature.getId());
document.writeAttribute("xlink:href", "#" + feature.getStyleInfo().getStyleId());
document.closeElement();
}
} else {
document.writeObject(geom, asChild);
document.writeAttribute("id", feature.getId());
}
} catch (TransformException e) {
log.warn("could not render feature");
}
}
}