How to use 3D-polygons to draw roads and houses?

[Kevin K 157]

Actually.....you could also save a step by simply using the nurbs curve tool and snapping to the the existing 3d polys to create 

an angled plane, THEN doing the surface from curves, then using shell. Maybe a tiny time saver.

[line-weight 776]

But these methods wouldn't work for hipped roofs or any of the various more complex forms in the example document. And it wouldn't give you the body of the house.

 

[Kevin K 157]

No....nothing to do with the body of the house.  That is another aspect altogether.  Just some extrusions, I would imagine.

I was just showing an example for the gable roofs implied from the dwg file.

[line-weight 776]

The point is that if you have what's effectively the wireframe of the solid you want ... it's frustrating that there isn't a one-click command to do just that. If you could, then it would just be a matter of doing that, then extruding the bottom horizontal face of that solid to the ground.

 

I often come up against something like this when importing a supposed 'BIM' model of some product or the other, that comes through as a kind of mesh, or other mess of polygons. And it looks like it ought to be possible just to tell VW to change it into a solid object that would then be easy to modify, section and so on. But it seems it's not.