POV-Ray : Newsgroups : povray.binaries.images : Proof of concept: Edge detector (as pattern), sort of : Re: Proof of concept: Edge detector (as pattern), sort of Server Time
30 Jul 2024 18:15:58 EDT (-0400)
  Re: Proof of concept: Edge detector (as pattern), sort of  
From: Trevor G Quayle
Date: 16 Mar 2011 10:25:01
Message: <web.4d80c7a8471774c081c811d20@news.povray.org>
Le_Forgeron <lef### [at] freefr> wrote:
> Edge detector (as pattern), sort of.
>
> Just a quick (and bad) test, 100% SDL, 100% CSG.
>
> Ambient & Diffuse : <1,0>,<1/2,1/2>,<0,1>
>
> I do not like:
>  - it's not a map (and a map cannot be used)
>  - the distribution in space (crude square/line are visible)
>  - it uses a lot of objects, hence memory!
>  - the sampling is limited at 256 entries... here with 125.
>
> How ? so far just with average pattern and many object patterns (with a
> bit of translate).
>
>
>
>
>
> --
> Software is like dirt - it costs time and money to change it and move it
> around.
>
> Just because you can't see it, it doesn't weigh anything,
> and you can't drill a hole in it and stick a rivet into it doesn't mean
> it's free.

Looks alright.  I does look like you have some coincident surface at some faces.
Rather than applying the averaged object pattern directly, maybe trun it into a
function first, then you could maybe work on some interpolation that would help
smooth the blockiness.

-tgq


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