In article <38cd5e80@news.povray.org>, "Erick" <ejv### [at] wxsnl> 
wrote:

> I wondered if there is an easy way to make threedimensional curves 
> using a mathematical function, ideally precisely between two points . 
> How could this be done in POV-ray?

There is a set of spline macros by Chris Colfax, here:
http://www.geocities.com/ccolefax/spline/


There is also MegaPOV, an unofficial version of POV-Ray and unsupported 
by the POV-Team, which includes two different spline patches which will 
probably do what you want. MegaPOV is available here:
http://nathan.kopp.com/patched.htm


> Previously, many people made spirals by combining a lot of spheres with
> their coordinates following a spiral calculation. Isn't there a more
> appropriate and direct way to do so? And, more interestingly,  following
> completely different paths.

If you use MegaPOV, there is a sphere_sweep object which can be used to 
make "wire" like shapes instead of using hundreds or thousands of 
spheres.

-- 
Chris Huff
e-mail: chr### [at] yahoocom
Web page: http://chrishuff.dhs.org/

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