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Any ideas on how to extract all the visible portions of a rendering that are
within a range of distances from the camera?
Steve
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In article <39023756@news.povray.org> , "Steve Tucker" <stu### [at] lobo net>
wrote:
> Any ideas on how to extract all the visible portions of a rendering that are
> within a range of distances from the camera?
CSG?
Thorsten
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"Thorsten Froehlich" <tho### [at] trfde> wrote in message
news:39025122$1@news.povray.org...
| In article <39023756@news.povray.org> , "Steve Tucker" <stu### [at] lobonet>
| wrote:
|
| > Any ideas on how to extract all the visible portions of a rendering that are
| > within a range of distances from the camera?
|
| CSG?
If so, how about something like:
#declare DIST=100; // distance within scene to be kept
camera { location LOC look_at LOO }
difference {
union {
// all of scene within here
}
sphere {LOC, DIST inverse}
}
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Steve Tucker wrote:
>
> Any ideas on how to extract all the visible portions of a rendering that are
> within a range of distances from the camera?
>
> Steve
What do you want to do with it? Speed up parsing and rendering time? If
so, keep in mind that things that are behind the camera can take
influence on the image (shadows, reflections,...)
If that's not what you intended, please explain me. Maybe I'm on the
wrong track.
Karl
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Oops, "visible portions". Sorry, never mind. That would be a cone in place of the
sphere
with apex at camera LOC and base center at LOO and getting the angles of camera and
cone
right still wouldn't exactly do what you were asking.
Bob
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>
> Any ideas on how to extract all the visible portions of a rendering that are
> within a range of distances from the camera?
>
> Steve
Maybe the "Cutter" utility that u can find on the Schrammal's page
http://www.rhein-ruhr.de/~schrammel/genesis.html will help you?
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