in news:web.45a82fb9aa573b97442464bf0@news.povray.org waggy wrote:

> I like to use SunPos() to show the seasonal solar exposure and
> penetration of structures so as to minimize heat gain in the summer
> and maximize it in the winter.

That is exactly what I wrote it for :)

>  I throw a bunch of intensity- and
> color-coded 'suns' in the sky (red for summer 'cooling days', and
> blue for winter 'heating days'). The resulting red-magenta-blue hues
> illuminating the surfaces of the structure indicate where wanted and
> unwanted solar radiation is intercepted.

Ah, great trick, never thought of it.

Thanks,

Ingo

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