Rune wrote:
> Hi,
> 
> I have forgotten - is there ever anyone who have made a macro for creating 
> rounded prisms? I currently need a macro to create rounded prisms, where the 
> rounded prism will fit inside a normal prism with the same points. In other 
> words, the rounding thickness should not be added to the prism, but rather 
> some volume should be taken away at the edges to get the rounding.
> 
> I tried to do the math myself, but it turned out to be a bit tricky for me.
> 
> I have searched on google for both rounded and smooth prism, but with no 
> good results as far as I can see. I just seem to remember that such a macro 
> existed, but I may be mixing up things...?

Hi,
I don't think its quite what you're looking for, but in case it is:  my 
PointArrays macros in the object collection can convert a linear spline 
to a bezier spline with rounded corners.  The convex corners will lie 
inside the original as you want, but the rounding of the concave corners 
will not.  Also, it is still just a prism, so the y oriented edges will 
be round but the top and bottom faces will still have sharp edges.

If you're interested check out the PA_Linear_To_Bezier and 
PA_Linear_To_Bezier_Circ (and maybe PA_Linear_To_Bezier2) macros in the 
PointArrays package.  An example image can be seen here: 
http://news.povray.org/4856d321%40news.povray.org

Hope this helps.

-- 
-The Mildly Infamous Blue Herring

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