Re: Non-Photorealistic Rendering 2005-06-12 - By nigel_robinsonuk
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--- In Carrara@(protected), Harvey White <madyn@(protected)> wrote:
> On Sun, 12 Jun 2005 23:43:48 -0000, you wrote:
>
> >Hullo All,
> >
> >I've just tried to use a preset for the NPR and Carrara 4 Pro tells me that
I have not
installed
> >the Wizard. Scene wizard seems to work for setting up so I don't understand
what I've
done
> >wrong when it comes to rendering. I upgraded and my Carrara 3 folder is full
of stuff
that the
> >installer didn't think fit to put into my Carrara 4 folder (I tried moving
them over but
that's no
> >good).
> >
> >All of which brings me to my main point. Does anyone know how to use the
outlines
option
> >in the NPR so that, when the camera is close to an object it DOESN'T render
outlines
for the
> >back of the object? At first I thought I had backfaces turned on at the
object level, but
no.
> >The effect is only apparent when the camera is really close.
> >
> >I'm trying to end the animation by moving so close into an object that the
screen goes
blank,
> >I can't do this because it keeps showing the outines of the far side of the
object.
> >
> >I'll see if I can upload the QT movie to the FIles section of this Group,
called NPR or
similar.
> >
> >Any and all suggestions greatfully received.
>
> I don't know about NPR, but one thing to consider is that in Carrara,
> unless the object is specifically a volumetric object, all objects are
> simply shells of zero thickness. You can go directly into a sphere
> from the outside, and once inside, you will see the shader (unless
> you've taken steps to prevent this) that's on the outside.
>
> This might be one of your problems. Another possibility for you to
> try is to work around this, stopping a fraction short of the object,
> then editing in a direct cut to black (video editing program). This
> would work as well, I think.
>
> Harvey
>
Thanks for the idea Harvey, but by the time I'm close enough to be clear of any
other
objects, the back faces are already visible (file NPR.mov is uploaded now). I
may have to
find some way around it, but I'm a bit disappointed that I keep finding odd
limitations in
this, otherwise excellent, programme. Do you think putting some other kind of
object in
the way may help? Can I specify a volumetric object?
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