Nekar nous apporta ses lumieres en ce 29/08/2006 04:27:
> "Shurakai" <nomail@nomail> wrote in message 
> news:web.44bfb52a58e020876b3522e90@news.povray.org...
>> "Nekar" <ger### [at] rpmmagcoza> wrote:
>>> Lovely. I still want to see something like this with the electron fields
>>> rendered instead of the connector sticks. Maybe it would look too
>>> confusing.. or maybe it could look very pretty...
>>>
>>>
>>> --
>>> -Nekar Xenos
>>> "The truth is out there"
>> Hi Nekar,
>>
>> i also would like to render electron density-maps, because that's what You
>> measure in a X-ray diffraction experiment. But up to now i didn't find a
>> way to convert the different slices of fourier-maps or electron density
>> maps to DF3 format. It would be very nice to render the unit cell, or even
>> only the asymmetric unit in a way that it represents the electron density
>> in the space by illuminating clouds. If someone have a good idea i would
>> appreciate a lot to hear it.
>>
> 
>  How about a media density function based on
> http://home.att.net/~mopacmanual/node379.html
> 
> I'm not sure how to use !n in Pov-Ray though.
> 
> 
n! is factorial. It's the product of all integers lower or egual to the value of 
n: n*(n-1)*(n-2)*....*1
0! = 1 by deffinition.
1! = 1
2! = 2
3! = 6
4! = 24
5! = 120
6! = 720
7! = 5 040
8! = 40 320
9! = 362 880
10! = 3 628 800
11! = 39 916 800
.
.
.
You can use a macro to make the calculations, or use an aray that you fillup 
with the results.

-- 
Alain
-------------------------------------------------
BACHELOR: A man who never makes the same mistake once.

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