Yes, is a double helix, do you know how can I do it?


news:cfs9fb$2mg$1@chho.imagico.de...
> Oleguer Vilella wrote:
> > I want to do a DNA chain. I found that in Pov-Ray I can do spirals and I
> > think the spiral can looks like a DNA chain, but when I tray to render
the
> > code it doesn't work. The code is:
> >
> > normal
> >     {
> >         spiral1 5 [, 0 ]
> >       pigment { color Red }
> >      scale
> >      rotate
> >      translate
> > }
> >
> > Do you know what is the problem?
>
> The problem is that this is not a valid normal statement.
>
> Valid (inside a texture{}) would be
>
> normal {
>    spiral1 5
> }
>
> the rest is nonsense.
>
> But of course this would not create a spiral, it would just modify the
> normal of the object it is applied to.
>
> Apart from that the shape of a DNA chain is not a spiral but a helix (a
> double helix to be precise).
>
> Christoph
>
> -- 
> POV-Ray tutorials, include files, Sim-POV,
> HCR-Edit and more: http://www.tu-bs.de/~y0013390/
> Last updated 06 Jul. 2004 _____./\/^>_*_<^\/\.______

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