I have seen this question before, but I was wondering if anybody
had seen or written anything recently.
You make a 2d image with an orthographic camera. How do you get
povray to draw an outline around everything without using find
edge on an image application.

James

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In article <3D8645FC.DEE3C64C@wcom.com>,
 James W Foster <j.f### [at] wcomcom> wrote:

> I have seen this question before, but I was wondering if anybody
> had seen or written anything recently.
> You make a 2d image with an orthographic camera. How do you get
> povray to draw an outline around everything without using find
> edge on an image application.

Um, you don't. Otherwise there would have been no reason to write the 
find_edges filter.
POV doesn't know about "edges", only about intersections between lines 
and surfaces, so it can't "draw an outline". You may have some success 
texturing everything with the slope filter with the slope direction 
facing the camera. This is not perfect, the find_edges filter uses 
several different methods combined, but it will do something.

-- 
Christopher James Huff <cja### [at] earthlinknet>
http://home.earthlink.net/~cjameshuff/
POV-Ray TAG: chr### [at] tagpovrayorg
http://tag.povray.org/

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On Mon, 16 Sep 2002 18:13:38 -0400 Christopher James Huff wrote:

>POV doesn't know about "edges", only about intersections between lines 
>and surfaces, so it can't "draw an outline". You may have some success 
>texturing everything with the slope filter with the slope direction 
>facing the camera. This is not perfect, the find_edges filter uses 
>several different methods combined, but it will do something.

  Chris, do you recall one of our resident artists posting some examples
of cartoon-like renderings in the images group? Each character/object
had a black outline around it, as in a comic book or a cartoon. Might
have been using MegaPov. I just can't remember who it was, and my
archived groups no longer go back far enough. I think it may have been
about two years ago...

-- 
Alan
ako### [at] povrayorg
a k o n g <at> p o v r a y <dot> o r g

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In article <202dougth5t7hjbubka3lfkg1no38ktj7f@4ax.com>,
 Alan Kong <ako### [at] povrayWWWSPAMCOMorg> wrote:

>   Chris, do you recall one of our resident artists posting some examples
> of cartoon-like renderings in the images group? Each character/object
> had a black outline around it, as in a comic book or a cartoon. Might
> have been using MegaPov. I just can't remember who it was, and my
> archived groups no longer go back far enough. I think it may have been
> about two years ago...

I think that was HE Day. He did some incredible work, I think he uses 
3DS Max now and was hired to do some kind of professional graphics work.
And it was MegaPOV, using the find_edges filter (which I did a lot of 
work on, though Nathan Kopp made a lot of improvements and bug fixes to 
my code, and IIRC, had started a "cartoon" filter that got me inspired 
to do the find_edges filter).

-- 
Christopher James Huff <cja### [at] earthlinknet>
http://home.earthlink.net/~cjameshuff/
POV-Ray TAG: chr### [at] tagpovrayorg
http://tag.povray.org/

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On Mon, 16 Sep 2002 15:58:36 -0500, James W Foster <j.f### [at] wcomcom> wrote:
> I have seen this question before, but I was wondering if anybody
> had seen or written anything recently.
> You make a 2d image with an orthographic camera. How do you get
> povray to draw an outline around everything without using find
> edge on an image application.

You can be interested in http://news.povray.org/search/?s=cartoon
But you can be also interested in http://news.povray.org/search/?s=povgui

ABX

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In article <chr### [at] netplexaussieorg>,
 Christopher James Huff <chr### [at] maccom> wrote:

> I think that was HE Day. He did some incredible work, I think he uses 
> 3DS Max now and was hired to do some kind of professional graphics work.
> And it was MegaPOV, using the find_edges filter (which I did a lot of 
> work on, though Nathan Kopp made a lot of improvements and bug fixes to 
> my code, and IIRC, had started a "cartoon" filter that got me inspired 
> to do the find_edges filter).

A correction, or rather an omission, something I forgt: there was 
somebody who more recently came up with a clever way to duplicate the 
find_edges feature using functions and the slope pattern. He basically 
got the necessary color, normal, and depth information encoded in RGB 
image files, and used those files as input to the algorithm. It required 
several renderings of the scene (to generate the necessary data files), 
and of course the data was a bit limited in accuracy, but it worked and 
was implemented entirely in POV script. He posted his work to one of the 
scene file groups on this server, search for "find_edges".

-- 
Christopher James Huff <cja### [at] earthlinknet>
http://home.earthlink.net/~cjameshuff/
POV-Ray TAG: chr### [at] tagpovrayorg
http://tag.povray.org/

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