Thank you, the one straight man in the crowd.........

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> If you're serious about that, I can send you a list in this format


I would also appreciate having this list. =)

 - Slime
[ http://www.slimeland.com/ ]

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On Tue, 27 Aug 2002 11:31:39 -0400, "Slime" <slm### [at] slimelandcom> wrote:
> > If you're serious about that, I can send you a list in this format
>
> I would also appreciate having this list. =)

so many orders ?
what about some binary group or web upload ?

ABX

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Yup, that was the one I was referring to...
Thanks, Ken.

*bows before the great master of links*
:-)

--
Tim Nikias
Homepage: http://www.digitaltwilight.de/no_lights/index.html
Email: Tim### [at] gmxde

> http://www.geocities.com/CapeCanaveral/Galaxy/8018/  ???
>

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Mike Williams wrote:
>Wasn't it Timothy R. Cook who wrote:
>>Greg M. Johnson wrote:
>>> I didn't quite like how the starfield pigments looked in a sky_sphere, so
>>> I'm going to make my own.
>>>
>>> Q: which will render faster,
>>> i) pow(10,6) spheres, or
>>> ii) an isosurface of say the f_noise3d at low threshold and a huge scale?
>>
>>Be a manly man, plot a few hundred actual stars' relative positions.
>>(Actually I'd like to try that, I just need to get a nice
>>comma-delimited text file of their positions)
>
>If you're serious about that, I can send you a list in this format

Sorry to de-lurk, but I also would be extremely interested in that list.  My
email is pov### [at] ubidubiumnet.  Thanks.

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gilroy wrote:
> Sorry to de-lurk, but I also would be extremely interested in that list.  My
> email is pov### [at] ubidubiumnet.  Thanks.

Heh, what have I started....(actually I don't think I'll need the list,
as the one from the geocities site looks more than sufficient)

-- 
Tim Cook
http://empyrean.scifi-fantasy.com
mirror: http://personal.lig.bellsouth.net/lig/z/9/z993126

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> Q: which will render faster,
> i) pow(10,6) spheres, or
> ii) an isosurface of say the f_noise3d at low threshold and a huge scale?

you are joking, aren't you?

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Wasn't it Rafal 'Raf256' Maj who wrote:
>Mike Williams <mik### [at] econymdemoncouk> wrote in
>news:Aj0### [at] econymdemoncouk 
>
>> I have such a list for all stars brighter than magnitude 7.5, that's
>> 15654 stars. The file is about 668 Kb in size.
>
>Please eamil it to me (pov### [at] raf256com) 
>
>"Del And",0,39,19.70,+30,51,39.00,-0.091,


>what exacly are this numbers - with can be used as <x,y,z> coordinates ?

Each line contains the star name (If no actual name, then the Flamsteed
letter and constellation. If no Flamsteed, then Henry Draper number. If
no HD then Hipparcos number). 

The next three numbers are hours, minutes, seconds of the Right
Ascension.

The next three numbers are degrees, minutes, seconds of the Declination.
(Note, only the degrees show the sign but you'll have to remember to
apply it to the degrees and seconds).

The final number is the base magnitude, which indicates the brightness
of the star.


Convert the Right Ascension and Declination to degrees. Place the star a
long distance away in the z direction. Rotate by -x*RA then y*Dec (or is
it -y*Dec). 


-- 
Mike Williams
Gentleman of Leisure

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Greg M. Johnson wrote:
> 
> I didn't quite like how the starfield pigments looked in a sky_sphere,
> so I'm going to make my own.
> 
> Q: which will render faster,
> i) pow(10,6) spheres, or

A mesh with triangles will render quicker, and use far less memory.
If the triangles are far enough away, they look just like spheres
that are far, far away.

#local SEED=seed(0);

mesh {

  #local iI=0;#while(iI<NUMBER_OF_STARS)

  #local vR=<rand(SEED),rand(SEED),rand(SEED)>*360;

  triangle {
    vrotate(<0,1,DISTANCE>,vR),
    vrotate(<-97/112,-.5,DISTANCE>,vR),
    vrotate(< 97/112,-.5,DISTANCE>,vR)
  }
  #local iI=iI+1;#end

  no_shadow
  pigment { rgb 1 }
  finish { ambient 1 diffuse 0 }
  translate CAMERA_POSITION // makes stars appear stationary
}

Set DISTANCE so that the triangles just become points.

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Wasn't it ABX who wrote:
>On Tue, 27 Aug 2002 11:31:39 -0400, "Slime" <slm### [at] slimelandcom> wrote:
>> > If you're serious about that, I can send you a list in this format
>>
>> I would also appreciate having this list. =)
>
>so many orders ?
>what about some binary group or web upload ?

That sounds like a good idea.

    <http://www.econym.demon.co.uk/stars.zip>     219 kb


-- 
Mike Williams
Gentleman of Leisure

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