thank you, for the archives the method I was looking for was:

public void movePebbleToPos( String ellipseId, String dstId ){
  SVGDocument doc = this.getSVGDocument();
  final SVGSVGElement root = doc.getRootElement();
  final SVGElement dst_e =  (SVGElement) doc.getElementById(dstId);
  final SVGElement ellipse = (SVGElement)doc.getElementById(ellipseId);
  this.getUpdateManager().getUpdateRunnableQueue().invokeLater(
     new Runnable() {
     public void run() {
        SVGLocatable dst_loc = (SVGLocatable) dst_e;
        SVGMatrix mat = dst_loc.getTransformToElement(ellipse);
        SVGPoint pt = root.createSVGPoint();
        SVGRect bbox = dst_loc.getBBox();

        pt.setX(bbox.getX() + bbox.getWidth()/2);
        pt.setY(bbox.getY() + bbox.getHeight()/2);
        pt = pt.matrixTransform(mat);

        ellipse.setAttribute("cx", ""+pt.getX());
        ellipse.setAttribute("cy", ""+pt.getY());                               
    
  }});
}

cheers,
Tacio

On 3/8/07, Tonny Kohar <[EMAIL PROTECTED]> wrote:
Hi,

On Thu, 2007-03-08 at 04:39 +0100, Tacio Santos wrote:
> thank you, but the problem I'm getting now it that  "ellipse" (my
> pebble) doesn't implement SVGElement and dst_e  doesn't implement
> SVGLocatable, i.e. I'm having some difficulties understanding how and
> when to cast/convert one element type to another.
>
> public void moveEllipseToPos( String ellipseId, String dstId ){
>   SVGDocument document = this.getSVGDocument();
>   final Element dst_e =  document.getElementById(dstId);
>   final Element ellipse = document.getElementById(ellipseId);
> ..

Try to cast into SVGElement

final SVGElement dst_e =  (SVGElement)document.getElementById(dstId);
final SVGElement ellipse = (SVGElement)document.getElementById(ellipseId);

If I am not wrong SVGElement implement SVGLocatable, please check the SVG DOM 
API spec.


Regards
Tonny Kohar
--
Sketsa
SVG Graphics Editor
http://www.kiyut.com


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