In article <3906DDC6.6A137E88@erols.com>, Rik Kline <rik### [at] erolscom> 
wrote:

> Does any one have any code or know of any for a double helix object?

Try something like this(untested!):
#macro DoubleHelix(Num, Twists, Height, Radius, MinorRadius, Offset)
    union {
        #local J=0;
        #while(J<Num)
            sphere {< Radius, Height*J/(Num-1), 0>, MinorRadius
                rotate y*360*Twists*J/(Num-1)
            }
            sphere {< Radius, Height*J/(Num-1), 0>, MinorRadius
                rotate y*360*Twists*J/(Num-1) + y*Offset
            }
            #local J=J+1;
        #end
    }
#end

-- 
Christopher James Huff - Personal e-mail: chr### [at] yahoocom
TAG(Technical Assistance Group) e-mail: chr### [at] tagpovrayorg
Personal Web page: http://chrishuff.dhs.org/
TAG Web page: http://tag.povray.org/

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