Subject:
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Re: Clipping
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Newsgroups:
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lugnet.cad.ray
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Date:
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Mon, 10 Jun 2002 21:10:58 GMT
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Viewed:
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500 times
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"Dave Schuler" <orrex@excite.com> skrev i meddelandet
news:GxI4LG.Mq6@lugnet.com...
> Could someone tell me if I understand the "clipped_by" function in POV-Ray
> correctly? As I see it, if I do something like:
>
> sphere {<0,0,0>,2
> clipped_by {box <0,0,0>,<1,1,1>}
>
> will it only display those portions of the 2-radius sphere that fit within
> the 1x1x1 box? Or would it display the points of intersection? How does
> this differ from "bounded_by?"
'clipped_by' is almost the same as a CSG 'difference', ie. it modifies the
object, but doesn't generate surfaces on the cut part.
'bounded_by' is a hint to POVRay about complicated objects, to make
rendering faster.
Test for yourself with a new doc. in POVRay, Insert / Ready-Made Scenes /
Basic Scene, run, and remember how it looks. Now insert the line
bounded_by {box {<0,0,0>,<1,1,1>}}
in the sphere, and You'll notice no difference.
Now change this to 'clipped_by', and You know the difference.
--
Anders Isaksson, Sweden
BlockCAD: http://user.tninet.se/~hbh828t/proglego.htm
Gallery: http://user.tninet.se/~hbh828t/gallery/index.htm
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Message has 1 Reply:
 | | Re: Clipping
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| (...) Thanks Anders! I've been playing around with it for a few days and I think I now have a grasp of the basics. At this point I'm on to screwing up bigger and more complicated POVRay objects. Here's what I've come up with so far (WARNING: (...) (22 years ago, 12-Jun-02, to lugnet.cad.ray)
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Message is in Reply To:
| | Clipping
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| Could someone tell me if I understand the "clipped_by" function in POV-Ray correctly? As I see it, if I do something like: sphere {<0,0,0>,2 clipped_by {box <0,0,0>,<1,1,1>} will it only display those portions of the 2-radius sphere that fit within (...) (22 years ago, 10-Jun-02, to lugnet.cad.ray)
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