It may be possible. Wings3D just isn't set up that way right now. Using the material to define an objects type works pretty good.
There may be some code already there that could make it possible. It is possible in Object mode to select an object > RMB > Object to Area light. This converts an object to an area light. Is it worth the trouble to add this to Wings3D??? I do not know...
For a window that shows the rendering progress, I think the Kerkythea plugin may have some code for that. Install Kerkythea and you can see how that plugin works. It would be nice to see the rendering progress.
Not sure if you noticed the list of features that are currently in the YafaRay plugin. Here is a link to the pdf. YafaRay plugin Features
oort
There may be some code already there that could make it possible. It is possible in Object mode to select an object > RMB > Object to Area light. This converts an object to an area light. Is it worth the trouble to add this to Wings3D??? I do not know...
For a window that shows the rendering progress, I think the Kerkythea plugin may have some code for that. Install Kerkythea and you can see how that plugin works. It would be nice to see the rendering progress.
Not sure if you noticed the list of features that are currently in the YafaRay plugin. Here is a link to the pdf. YafaRay plugin Features
oort