POV-Ray : Newsgroups : povray.binaries.images : Smooth patch : Re: Smooth patch Server Time
15 Aug 2024 22:25:36 EDT (-0400)
  Re: Smooth patch  
From: Shay
Date: 19 Apr 2002 12:06:06
Message: <3cc0406e@news.povray.org>
Jide <jid### [at] kotisoonfi> wrote in message
news:3cc03cf7@news.povray.org...
>
> Looks like your going for subdivision surfaces. Is the original model in
> quads or tris?

The original model is in quads. They are made into tris for rendering by
choosing the optimal division for the curve. All of the calculations are
done with quads and the output is quads. I created the weight patterns
myself to be used this way.

>
> I'm not sure why you want the surface to go through all control points.
This
> will create hard edges and while it is sometimes wanted I think the point
of
> subdivision surfaces is to make the model more defined but also somewhat
> smoother.
>

Every process except building the mesh entirely by yourself makes the object
*less* defined.

Not going through all control points makes the object much less defined and
much smoother. Passing through all of the control points retains most of the
definition of the object and makes the object somewhat smoother. Ideally,
you should have both options available to you and of course more definition
can be retained in any object by using more control points.

If you are subdividing two objects which are just touching each other,
division through control points will keep them just touching each other
provided the control points are a the location where the objects are
touching.

The two processes are unique and produce a completely different results.
 -Shay


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