Nieminen Juha wrote:
> 
> Ken <tyl### [at] pacbellnet> wrote:
> : intersection = cutting
> : difference   = scooping
> 
>   I have always thought about the difference as cutting parts out from the
> main object.

In english the word "scooping" implies that but perhaps not as definitavely as
you have stated it.
 
> : clipping     = cutting and hollowing
> 
>   Is clipping considered CSG? Note that the 'S' stands for 'solid' :)
> 
>   I think that it would also be useful if you explained the difference
> between intersection and clipping and when it's better to use clipping
> instead of intersection.

You might be right here.

Intersections will slice or cut an object and then apply a face where the
slice has been made.

Clipping slices an object but will not leave a face where the slice has
occured. Instead the object that has been sliced will now appear to be
hollowed out since all solid objects in POV-Ray are not truly solid.

-- 
Ken Tyler

See my 1000+ Povray and 3D Rendering and Raytracing Links at:
http://home.pacbell.net/tylereng/index.html

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