Re: [udig-devel] Question #3 - How the Shaperenderer works

[Jody Garnett <jgarnett@xxxxxxxxxxxxxxx>]

Bernhard Kastner wrote:
> > I'm currently playing around with the 
> > org.geotools.renderer.shape.ShapefileRenderer and wondering how it 
> > works:
> > Am I assuming correctly, that it tries to draw the image to a 
> > Graphics2D-object, which also may be an image?
> the normal J2D-renderer has the ability to simply 
> "createScrollpane()". Is it possible to do this for any kind of 
> shapefile- or literenderer? That would be much more easier to use 
> (because one does not have to mess up with the Graphics2D-object, the 
> envelope and so on (if I got that right))
The problem is "the otherway around",  a class that nobody has 
implemented yet for geotools needs to be the scrollpane and use a 
GTRenderer (that is ShapefileRenderer or StreamingRenderer) as required 
to draw content.

In uDig the choice of which renderer to use is handled by the 
RendererManager, in udig there is also the option of using Renderers 
that know how to make WMS requests.

Did that help?

Jody