"Rune" <run### [at] runevision com> wrote in news:3ff973fd@news.povray.org:
> I have never been able to figure out how to completely smoothly have
> another number than four bicubic patches meet at a point. What rules did
> you use to accomplish it?
>
> It would be nice if you gave all the patches the same color, and maybe a
> little phong or specular, so the smoothness can be better examined. From
> the posted images, it's impossible to tell if the surface really is
> completely smooth.
I have rendered some images with specular highlights.
They show that the surface might not be completely
smooth around the "seems" between the patches.
My idea was to have all the 8 control points that
surrounds each "corner point" to lie in the same
plane.
It seems that the results are better if the star
around each of the corner points is regular.
But I now have a growing suspicion that it may not
be possible use bicubic Bezier patches to make such
a surface (that is completely smooth).
Does anyone know if I'm right about this ?
Or have anyone seen images that shows the contrary ?
Tor Olav
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