POV-Ray : Newsgroups : povray.general : Re: Lambda : Re: Lambda Server Time
11 Aug 2024 13:21:18 EDT (-0400)
  Re: Lambda  
From: Bob Hughes
Date: 13 Jul 1999 00:58:40
Message: <378AC765.A9DDEF15@aol.com>
Heh. Now how's about 'omega'? Never mind, I'm only kidding.


PoD wrote:
> 
> Steven Jones wrote:
> >
> > How does lambda work?
> 
> Here's a simple explanation of what happens when turbulence is applied.
> 
> First get the intersection point of the camera ray and the first object
> it hits.
> Now apply turbulence. The following steps are applied a number of times
> specified by octaves.
>   Move the point a distance determined by the turbulence amount.
>   Multiply the turbulence amount by omega.
>   Select a new direction to move the point. Lambda determines how much
> this new direction varies from the previous one.
> 
>   After octaves steps, take the value of the pattern at this point and
> apply it to the intersection point.
> 
> So a high lambda makes the point take a very jagged path through pattern
> space and low lambda makes the path fairly straight.
> 
> The final effect is that you tend to get gentle waves in the pattern
> with low lambda and more crinkly effects with high lambda.
> 
> Cheers, PoD.

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