Just random wandering in my mind led me to think about cartoon rendering, 
specifically the black edges. I seem to remember maybe someone trying 
this before, but not sure. Anyway, in the anti-aliases step, if one 
wanted to, couldn't one sort of make something over a certain threshold 
black or darken the line, so it looks like it was drawn? I figured, 
something like:

Ink_Edges = 0 -> 1

1 = 100% dark, I.e. make the pixel black, anything else is darkened by a 
percentage.

Ink_Threshold = 0 -> 1

Determines when the darkening happens, this is "over" the normal AA. So 
if AA is set at a threshold of .1, you could make the ink threshold .5 
and it would only "ink" things if the color difference is 60%, not 10%, 
like the AA.

Anyway, just an odd thought I had for what someone might do to fiddle 
with trying to make POV-Ray "look" like cartoon art. I think I remember 
someone doing something similar before though....

-- 
void main () {

    call functional_code()
  else
    call crash_windows();
}

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Um... You're not talking of something like the find edges macro of the
postprocess feature of megapov?
http://megapov.inetart.net/demo/pp_find_edges.png

i have to confess i never tried it so i can't tell anything about
usage/speed/flexibility though.

Just a tip ;-)
Regards Roman

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Patrick Elliott <sha### [at] hotmailcom> wrote:
> Just random wandering in my mind led me to think about cartoon rendering,
> specifically the black edges. I seem to remember maybe someone trying
> this before, but not sure. Anyway, in the anti-aliases step, if one
> wanted to, couldn't one sort of make something over a certain threshold
> black or darken the line, so it looks like it was drawn? I figured,
> something like:
>

Had to search to find this, but I remembered it from a few years back (2002)
by Simon Adameit.

http://news.povray.org/./povray.binaries.images/thread/%3C3d3edd19%40news.povray.org%3E/

http://news.povray.org/povray.binaries.images/thread/%3C3d3fd84f%40news.povray.org%3E/?mtop=2

The effect processes a scene and detects normal and depth edges (as opposed
to color area edges) to give a cartoony like look.

And the finalized scene file:
http://news.povray.org/povray.binaries.scene-files/attachment/%3C3d40482f@news.povray.org%3E/p_main.pov.txt


-tgq

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In article <web.44117c74865d0b936c4803960@news.povray.org>, 
Tin### [at] hotmailcom says...
> Patrick Elliott <sha### [at] hotmailcom> wrote:
> > Just random wandering in my mind led me to think about cartoon rendering,
> > specifically the black edges. I seem to remember maybe someone trying
> > this before, but not sure. Anyway, in the anti-aliases step, if one
> > wanted to, couldn't one sort of make something over a certain threshold
> > black or darken the line, so it looks like it was drawn? I figured,
> > something like:
> >
> 
> Had to search to find this, but I remembered it from a few years back (2002)
> by Simon Adameit.
> 
>
http://news.povray.org/./povray.binaries.images/thread/%3C3d3edd19%40news.povray.org%3E/
> 
>
http://news.povray.org/povray.binaries.images/thread/%3C3d3fd84f%40news.povray.org%3E/?mtop=2
> 
> The effect processes a scene and detects normal and depth edges (as opposed
> to color area edges) to give a cartoony like look.
> 
> And the finalized scene file:
>
http://news.povray.org/povray.binaries.scene-files/attachment/%3C3d40482f@news.povray.org%3E/p_main.pov.txt
> 
Hmm. Thought so. I wonder what a version like my idea would do instead, 
but being not so great at coding in C... lol

-- 
void main () {

    call functional_code()
  else
    call crash_windows();
}

Post a reply to this message