POV-Ray : Newsgroups : povray.binaries.images : Recreate stone wall from texture (23k) : Re: Recreate stone wall from texture (23k) Server Time
5 Nov 2024 12:37:40 EST (-0500)
  Re: Recreate stone wall from texture (23k)  
From: Kari Kivisalo
Date: 17 Jan 2000 14:49:50
Message: <3883740D.D574EF8D@kivisalo.net>
Karl Pelzer wrote:
> 'till now I didn't get the meaning of the Level Connector.
> How does the input file looks like? 

The LC interpolates levels in "free" (pixv=255) areas
to form a smooth transition between perimeter pixels.
This is also a solution to the analog heat distribution
problem where the pixel values are temperatures.

Since the solution is obtained by iteration there is
a "side effect". When all the perimeter pixels are equal,
as in this case, this method eventually produces flat plane
but with small iteration counts the perimeter pixels
"bring down" those high free areas at a rate pixel/iteration.
The black parts of the mask could be considered as a
"distributed black hole" that eats the free areas :)

So basically it's an interpolator and in this case you input the mask.

Now available as Windows command line version and Leveller plug-in.
The plugin has only one parameter to change for the benefit of
GUI oriented people :) http://www.idrive.com/k_k/web/levcon.htm.

K.K.


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