A npr renderer for Wings?

[Dimitri]

Oort, Freestyle is a good npr renderer, for sure... however, it has some difficulty to produce a clean cut line rendering, as far as I know from my experiments with it. Its edge detection has to be more accurate. And it is too slow too in its workings.

Blender's internal line renderer is better to my opinion. If it had some more options it would be enough for producing very clean cut line rendering results... but the developers have abandoned the further development of it because of Freestyle (they do think to integrate it officially to Blender in some future version).

The rendering kind I do mean is just as the one in the video below: