Nurbs vs Polygon modeling - Better, or equal-but-different? 2005-05-23 - By Anthony Ware
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Lightworks always was - and as far as I know still is - a
polygon based renderer so all Nurbs get converted to polys
at render time anyway. I'm sure there was a setting somewhere
to determine the quality of conversion at render time but I've poked around
for a few minutes and haven't found it, so I could be wrong.
I'm not saying they are as good as Nurbs, but Polys can give pretty nice
smooth results - even on cylinders booleaned from spheres:
http://www.anthonyware.com/wip/polysphere.jpg
http://www.anthonyware.com/wip/wiresphere.jpg
Anthony
> I do not know what you missed, but you certailny was not
> looking at a render of a nurbs sphere.
> Compare this (the top right is a nurbs sphere, top left is a
> polyhedron with 128 faces and the bottom one is a polyhedron
> with 512 faces- (Actually it is just the nurbs object that i
> a sphere. It is not possible to make a polyhedron sphere - it
> can have millions of faces, it is still a polyhedron, not a
> sphere. Well if you have an *ethernal* number of faces, then
> it is a sphere.
> The difference becomes even more obvious if you make a hole
> through the spheres. If anyone can make a hole as smooth with
> polyhedron boolean, as the curve projection on nurbs that is
> to the right here http://www.visulogik.com/tS/kulor2.jpg,
> then I really want to see that and know how (s)he made it. No
> matter how many faces, there will be interpolation artifacts
> at the booleande edge.
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