"Thomas de Groot" <tDOTdegroot@interDOTnlANOTHERDOTnet> wrote in message 
news:4d95e1a4@news.povray.org...
>
> "Warp" <war### [at] tagpovrayorg> schreef in bericht
> news:4d95cdd7$1@news.povray.org...
>> On 03/22/2011 10:10 AM, Thomas de Groot wrote:
>>> I am sure the algorithm is both complex and surprisingly simple ;-)
>>
>>   Yes, the algorithm is very simple, but I'm keeping it to myself because
>> I'm mean. :P
>
> Now, why am I not surprised?  ;-))
>
> Thomas
>
>

Well sorry to spoil Warps secret, but its a tile based algoritm, ie, a 
square with 2 curved pieces of pipe, like the pic attached called 
pipe-tile.png.

I've done this before with a floor pattern so when I saw warps post I 
immediately knew how he did it.  I also did a similar image, also attached 
called pipes-small.png (this is a shrunk image from 1920x1080).

Anyway, you place lots of these tiles in a grid, but randomly rotate each 
one either 90, 180 or 270 degrees.  That way each pipe lines up with another 
and gives you a totally random path.  Stick some flanges in there and you 
have spaghetti plumping!

Warp also layered several tile grids on top of each other to give depth.

Warp, I hope you aren't too annoyed that I let the cat out of the bag!

Cheers Dre

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Attachments:
Download 'pipe-tile.png' (159 KB) Download 'pipes-small.png' (276 KB)

Preview of image 'pipe-tile.png'

Preview of image 'pipes-small.png'