Subject:
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Re: Modeling the magnifying glass in POV-Ray
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Newsgroups:
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lugnet.cad
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Date:
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Sun, 28 Feb 1999 17:05:00 GMT
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Viewed:
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847 times
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I've given this a try now. I haven't actually modeled the LEGO
magnifying glass, because I don't have it in front of me, and I don't
want to start a new flame war.
Seriously, though, I just made a simple lens in POV-Ray. Here's the
code I used:
--begin--
object{
union{
union{sphere {<-40,0,0>, 50 clipped_by{box{<0,-50,-50>,<10,50,50>}}}
sphere {<40,0,0>, 50 clipped_by{box{<-10,50,50>,<0,-50,-50>}}}
pigment{rgb <1,1,1> filter 1} finish {refraction 1 ior 1.15}}
torus{30,2 rotate <0,0,90> pigment{rgb <0,0,0>}}}
translate <220,0,0>
rotate <0,0,-20>
rotate <0,-30,0>
translate <0,-60,0>
}
--end--
And the result:
http://www.math.uio.no/~fredrigl/technic/formel/formel-test.jpg
It's kinda fun, but it takes a lot of fiddeling before one gets a nice
result. Keep in mind that is is commonly easier to focus by adjusting
the refraction than by adjusting the position of the magnifying glass.
This practice is probably cheating, though.
BTW: The model has a lot of unofficial/unfinished parts. Some of these
are available from
http://www.math.uio.no/~fredrigl/technic/ldraw/
Fredrik
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Message has 1 Reply:
 | | Re: Modeling the magnifying glass in POV-Ray
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| Fredrik Glöckner wrote in message ... (...) It's a cool idea, quite a cute effect. Is there some advantage to using the clipped spheres as opposed to a straight intersection? e.g. intersection { sphere {<-40,0,0>, 50 } sphere {<40,0,0>, 50 } (...) (25 years ago, 28-Feb-99, to lugnet.cad)
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Message is in Reply To:
| | Re: Modeling the magnifying glass in POV-Ray
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| (...) I didn't mean a part which was transformed with L3P, I meant to model the magnifying glass individually in POV-Ray, and including this model in an L3P'd model. Anyway, I am quite sure that POV-Ray does this refraction. The amount of refraction (...) (25 years ago, 27-Feb-99, to lugnet.cad)
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