I have not tried your example, but you might try using the namespace "aware" dom calls instead to create your elements...kinda like
Element circle = document.createElementNS(SVGDOMImplementation.SVG_NAMESPACE_URI, SVGConstants.SVG_CIRCLE_TAG); and circle.setAttributeNS(null, Double.toString(cx)); On Wed, Sep 29, 2010 at 11:48 AM, David Eccles (programming) < programm...@gringer.org> wrote: > I'm interested in dynamically overlaying SVG elements on a world map, and > can't > work out why things aren't working for me. I confess that I don't really > understand the swing process, so have tried to change code I found > elsewhere > (for the invokeLater method) in order to get this working. I know I'm using > sleeps instead of listeners in the main method -- those will change later > on > once I get things displaying properly: > > What should happen is that a huge white circle should appear centered on > Atlanta. This doesn't happen, but the map displays. The map is a 1000x420 > SVG > image of the world ( > http://user.interface.org.nz/~gringer/pics/worldmap.svg<http://user.interface.org.nz/%7Egringer/pics/worldmap.svg> > ). > > What things am I doing wrong? > > Code is shown below: > > import java.awt.BorderLayout; > import java.io.File; > import java.util.Vector; > import javax.swing.JFrame; > import org.apache.batik.swing.JSVGCanvas; > import org.w3c.dom.Element; > > public class Pathogenic { > > JSVGCanvas boardDrawing; > > public Pathogenic(JSVGCanvas drawing){ > boardDrawing = drawing; > } > > public boolean drawCities(final Vector<City> cityList){ > final double mapMinX = -170; > final double mapMinY = -90; > final double mapSizeX = 1000; > final double mapSizeY = 420; > boardDrawing.getUpdateManager().getUpdateRunnableQueue().invokeLater > (new Runnable() { > public void run() { > for(City tCity : cityList){ > double cx = (tCity.getX() - mapMinX) * (mapSizeX / > 360.0); > double cy = (tCity.getY() - mapMinY) * (mapSizeY / > 180.0); > Element cityCirc = > boardDrawing.getSVGDocument().createElement("circle"); > cityCirc.setAttribute("cx", Double.toString(cx)); > cityCirc.setAttribute("cy", Double.toString(cy)); > cityCirc.setAttribute("r", "50"); > > cityCirc.setAttribute("style","fill:white;stroke:black;stroke-width:3"); > > boardDrawing.getSVGDocument().getRootElement().appendChild(cityCirc); > System.out.println("Drawing " + tCity.getName() + " at > " + > cx + "," + cy); > } > } > }); > return true; > } > > /** > * @param args > */ > public static void main(String[] args) { > > JFrame program = new JFrame("Pathogenic"); > program.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); > program.setLayout(new BorderLayout()); > JSVGCanvas mapScreen = new JSVGCanvas(); > mapScreen.setDocumentState(JSVGCanvas.ALWAYS_DYNAMIC); > program.add(mapScreen, BorderLayout.CENTER); > File wmFile = new File("data/worldmap.svg"); > mapScreen.loadSVGDocument(wmFile.toURI().toString()); > // mapScreen.setURI(wmFile.toURI().toString()); > try { > Thread.sleep(2000); > } catch (InterruptedException e) { > e.printStackTrace(); > } > program.pack(); > program.setVisible(true); > try { > Thread.sleep(4000); > } catch (InterruptedException e) { > e.printStackTrace(); > } > Board b = new Board(); > b.addCity("Atlanta", -84.39, 33.755); > Pathogenic myApp = new Pathogenic(mapScreen); > myApp.drawCities(b.getCities()); > mapScreen.repaint(); > } > > } > > --------------------------------------------------------------------- > To unsubscribe, e-mail: batik-users-unsubscr...@xmlgraphics.apache.org > For additional commands, e-mail: batik-users-h...@xmlgraphics.apache.org > >
