Vahur Krouverk wrote:
> 
> Remco Poelstra wrote:
> >
> > Hi,
> >
> > I saw in a message from Peter Popov in reply to Feature request for
> > pov3.5 (08/09/00 16:55), that rgb can be converted to spectra. That's
> > what I need., since I want to convert the rgb value to a corresponding
> > audio frequentie, and audio is spectra. Where can I find more
> > information on doing so? (I'm a newbie on complex math, so it should be
> > a little bit easy explained.)
> >
> > Remco Poelstra
> 
> I don't think that you'll need complex math for this. In MegaPov source
> code there is function (RGBtoHue in color.c)from MSGTracer, which
> converts RGB to visible spectra (although part of it is commented out,
> but You can get idea). Basically you should convert RGB to hue, then
> convert hue to frequency (or wave length).

All right, I'll, but what is hue exactly? I thought it's the 'rotation'
of the colorcircle.

Remco

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