Peter Popov <pet### [at] vipbg> wrote in 
news:33fktu0i6o8l8mi8lj3ee8br9q3t2reeob@4ax.com

> It's quite easy, actually.

[...]

interesting :) is it Your's idea ?

-- 
#macro g(U,V)(.4*abs(sin(9*sqrt(pow(x-U,2)+pow(y-V,2))))*pow(1-min(1,(sqrt(
pow(x-U,2)+pow(y-V,2))*.3)),2)+.9)#end#macro p(c)#if(c>1)#local l=mod(c,100
);g(2*div(l,10)-8,2*mod(l,10)-8)*p(div(c,100))#else 1#end#end light_source{
y 2}sphere{z*20 9pigment{function{p(26252423)*p(36455644)*p(66656463)}}}//M

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On Tue, 19 Nov 2002 22:34:50 +0100, Peter Popov <pet### [at] vipbg> wrote:
> If you can work out the maths, I'd gladly have the thing animated even
> if it takes a month to render.

Yes, with nice, rapid but smooth camera zoomout to finally show whole table.
Perhaps with white POV-Ray ball guilty for movement in other applications ;-)

> I provide the imagery, you provide the maths, and we get rich
> and famous and go to Hamburg, this time not missing the Repperbahn :)

You are both famous already without your funny lonely beer meetings :-)

ABX

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On 19 Nov 2002 19:38:30 -0500, "Rafal 'Raf256' Maj" <raf### [at] raf256com>
wrote:

>interesting :) is it Your's idea ?

It's a very old idea, actually. 

The only thing I haven't seen before is the use of interior_texture to
fight the transparent edge problem. This of course does not mean that
no one has come up with the same idea before, nor that no one would
have at some point had I not come up with it first.

It is certainly not a new idea. I know I've tried it as far back as
1997, though back then halos had a problem with blobs which I couldn't
solve so I had to resolve to cheating :) In more recent times, someone
(Fabien? I might be wrong though) started a subsurface scattering hype
with an image of a glass full of milk. Even more recently, it has been
applied to Poser models (two names I associate with this one are Tim
Nikias and Gilles Tran, but again, I might be wrong) to improve the
realism of the skin.

Of course, I wouldn't mind if you gave me some credit if you reuse the
technique, esp. if you borrow the source that I will post these days
:)


Peter Popov ICQ : 15002700
Personal e-mail : pet### [at] vipbg
TAG      e-mail : pet### [at] tagpovrayorg

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On Tue, 19 Nov 2002 14:47:58 -0800, "Troy S. Ristow"
<tsr### [at] coxnet> wrote:

>Actually, the one-ball is yellow and the five-ball is that shade of orange.

I used a scanned photo of a professional set to sample the colors I
used to build up the image maps, so it might as well have gone wrong
somewhere. I do remember well that at least the pool club near my
place in Sofia has that poisonous orange color for the 1 ball.

>Incidentally, most of the current rule systems for 8-ball (that is what you
>were going for with the triangle-shaped rack, right?) do not require the
>one-ball to be in front, only that the eight-ball is in the center.

I didn't know that. I copied the arrangement from the photo I
mentioned, though from what I saw on the 'net, you seem to be right.

>Perhaps you were thinking of 9-ball with the diamond-shaped rack, where 
>the only requirement is that the one-ball is up front.

No, I only play 8-ball.


Peter Popov ICQ : 15002700
Personal e-mail : pet### [at] vipbg
TAG      e-mail : pet### [at] tagpovrayorg

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On Wed, 20 Nov 2002 08:29:29 +0100, ABX <abx### [at] abxartpl> wrote:

>You are both famous already without your funny lonely beer meetings :-)

Oh yeah? Aren't you missing something essential, such as the "rich"
part? :)

And it was a pizza meeting, not a beer one.


Peter Popov ICQ : 15002700
Personal e-mail : pet### [at] vipbg
TAG      e-mail : pet### [at] tagpovrayorg

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On 19 Nov 2002 18:34:41 -0500, Tom Galvin <tom### [at] imporg> wrote:

>The Rack

No way. Someone has to be the short cue then, and I don't think anyone
would want that.


Peter Popov ICQ : 15002700
Personal e-mail : pet### [at] vipbg
TAG      e-mail : pet### [at] tagpovrayorg

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Peter Popov wrote:
> 
> If you can work out the maths, I'd gladly have the thing animated even
> if it takes a month to render. Be sure to include angular momentum in
> the calculations, because I *always* take the first shot with a
> bottom-left english, starting 10 inches to the right of the cue
> position and aiming slightly to the right of the center of the 1 ball,
> so that the cue ball goes in the far right corner pocket. 

It is surely not trivial, the movement luckily is 2-dimensional in most
cases which makes things somewhat nicer but the balls don't always roll
perfectly (meaning that their angular velovity is directly related to
their translational velocity). Both the shot as well as collisions lead to
more complicated movements including gliding.

> There's the
> deal - I provide the imagery, you provide the maths, and we get rich
> and famous and go to Hamburg, this time not missing the Repperbahn :)

If that's guaranteed i would surely start right away...

Christoph

-- 
POV-Ray tutorials, include files, Sim-POV,
HCR-Edit and more: http://www.tu-bs.de/~y0013390/
Last updated 15 Nov. 2002 _____./\/^>_*_<^\/\.______

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On Wed, 20 Nov 2002 12:19:48 +0100, Christoph Hormann
<chr### [at] gmxde> wrote:

>If that's guaranteed i would surely start right away...

What do you know, with the right incentive one can get *everyone* to
work.

Maybe I should try to get an MBA after all :)


Peter Popov ICQ : 15002700
Personal e-mail : pet### [at] vipbg
TAG      e-mail : pet### [at] tagpovrayorg

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Peter Popov <pet### [at] vipbg> wrote in 
news:tcpmtu0d6lnonuelat7hbt3jl2rdgci6nc@4ax.com:

> On 19 Nov 2002 18:34:41 -0500, Tom Galvin <tom### [at] imporg> wrote:
> 
>>The Rack
> 
> No way. Someone has to be the short cue then, and I don't think anyone
> would want that.
> 

Are we talking about the same thing?  The triangle thing that corrals all 
the balls at the start of the game?

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On 20 Nov 2002 09:06:36 -0500, Tom Galvin <tom### [at] imporg> wrote:

>Are we talking about the same thing?  The triangle thing that corrals all 
>the balls at the start of the game?

Oh, that's just, well, the triangle. The rack is the little shelf-like
that holds the cues.


Peter Popov ICQ : 15002700
Personal e-mail : pet### [at] vipbg
TAG      e-mail : pet### [at] tagpovrayorg

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