POV-Ray : Newsgroups : povray.advanced-users : Outputting the outlines of a scene : Re: Outputting the outlines of a scene Server Time
4 Jul 2022 01:11:13 EDT (-0400)
  Re: Outputting the outlines of a scene  
From: Alain Martel
Date: 17 Feb 2020 16:20:13
Message: <5e4b038d@news.povray.org>
Le 2020-02-16 à 18:26, Mike Horvath a écrit :
> [Sorry for the double post. This is the second time Thunderbird has 
> messed up on me recently.]
> 
> I want to create an imagemap with hotspots based on the following 
> POV-Ray scene:
> 
>
https://mjhorvath.github.io/Datsville/docs/high-resolution-render/high-resolution-render.html

> 
> 
> I was wondering if there were maybe some way of automating the process, 
> by outputting the outlines of the objects that I can later vectorize in 
> Illustrator or Inkscape?
> 
> I know someone made a vector outline tool for Blender, but I'm not sure 
> how it works, or if it works _well_ at all.
> 
> Any ideas? Thanks so much!
> 
> 
> Michael

If you can render the objects separately, you can get a silhouette by 
rendering the object with finish{ambient 0 diffuse 0} against a white 
background. Or, render with +q0, a black pigment and a white background.
If you want a white object against a black background, then, you can use 
this:
pigment{rgb 1}finish{emission 1}
Or, +q0, a white pigment and black background.

For both options, you don't need any light.

Then, in Inkscape, you can use that image to generate that outline. You 
may also use a contour filter as another way to get a line around the 
object.

Only work for the object seen from a specific direction.


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