> > Take for instance this shape: > > http://www.flickr.com/photos/dave-griffiths/4404021664/ > > The L faces can't be single polygons as they are concave, so they are > built out of triangles. The white wireframe are from (hint-wire), the > black wireframe is a bunch of ribbon primitives. > > These could, I think. As long as you start drawing at either the inner or outer corner of the "elbow" it should work. Two 'polygons and a 'quad-list could build this and it should work with a normal wire-frame. That's just nitpicking but let's be clear as it's all quite confusing enough :-).
The choices we make here are quite interesting. If we'd have a shape like a flat cake with a single piece missing we could make the top and bottom out of 'polygon types and wire-frame those, then use a quad list to do the vertical dimension. Using hint-wire on that would result in either exposing the low resolution or colouring the whole side black. I suppose that in that case we'd have to try to use a shader on just that primitive to hopefully catch the vertical outline as it appears to the camera? The effect of stacking the ribbons with the hint-wire that you are using here is quite interesting, BTW. I assume these use a sort of "depth sort" with the ones drawn last placed "on top"? I got some cute glitter effects by drawing a thick black ribbon over a thinner white wire. Moving the whole thing about made single pixel glitches get through to create a nice sparkling effect. Cheap and cheerful fun. Yours, Kas.
