[news.eclipse.modeling.gmf] Re: SlidableAnchor and custom polygon as Nod

[Frank Zimmermann <f.zimmermann@xxxxxxxxxxxxxxx>]

Alex Boyko schrieb:
> Another option is approximate the figure with a polyline and let the 
> regular Slidableanchor do all the work for you.
> This is the best option in my opinion!
>
> Cheers,
> Alex


I've just overridden this one method NodeFigure.getPolygonPoints() in 
the corresponding EditPart and it works fine.


/**
 * @generated NOT
 */
protected NodeFigure createNodePlate() {
 final DefaultSizeNodeFigure result = new
 DefaultSizeNodeFigure(getMapMode().DPtoLP(40),getMapMode().DPtoLP(40)){

 @Override
 public PointList getPolygonPoints(){

  //just some way to get the polygon points
  Rectangle bounds = new Rectangle(getBounds());
  PointList ptList = new PointList();
  int[] scalePoints = ((EventFigure)getPrimaryShape()).scalePointList();
  for (int i=0;i<scalePoints.length;i+=2){
    ptList.addPoint(scalePoints[i]+bounds.x, scalePoints[i+1]+bounds.y);
  }						
  ptList.addPoint(scalePoints[0]+bounds.x, scalePoints[1]+bounds.y);		
  return ptList;
 }

 };
 return result;
}

hope it helps
Frank