POV-Ray : Newsgroups : povray.text.scene-files : Glitch help please! Server Time
31 Oct 2024 19:29:44 EDT (-0400)
  Glitch help please! (Message 1 to 2 of 2)  
From: Larry Fontaine
Subject: Glitch help please!
Date: 1 Sep 1999 18:18:26
Message: <37CDA224.47051AF3@isd.net>
This is the oil lamp (glass only) from the desktop scene (trapped) I
posted on binaries.images. There is a ring of sorts in the stem of the
glass, and I can't get rid of it. I tried adding an extra, short
cylinder where the torus and cone met up, to see if maybe that would
close some kind of gap, but it didn't work. Note that all differences
used to be intersections with inverse objects. Tell me if you know what
the problem is. Also note it may take a while to render.

#declare oillampglass = merge {
   difference {
      cylinder { <0,.5625,0>,<0,4.4375,0>,1 }
      cylinder { <0,.5,0>,<0,4.5,0>,.9375 }
      cylinder { <.812,2.421875,0>,<1.01,2.421875,0>,.09 }
      bounded_by { cylinder { <0,-.1,0>,<0,5.1,0>,1.1 } }
   }
   torus { .96875,.0625 translate <0,.5625,0> }
   torus { .96875,.0625 translate <0,4.4375,0> }
   difference {
      sphere { <0,0,0>,1 scale <.5,.4375,.5> translate <0,1.4375,0> }
      sphere { <0,0,0>,1 scale <.4375,.375,.4375> translate <0,1.4375,0>
}
      cone { <.328125,1.4375,0>,.109375 <.328125,1.93751,0>,.046875 }
      bounded_by { cylinder { <0,-.1,0>,<0,5.1,0>,1.1 } }
   }
   difference {
      cone { <.328125,1.4375,0>,.140625 <.328125,1.9375,0>,.078125 }
      cone { <.328125,1.437,0>,.109375 <.328125,1.93751,0>,.046875 }
      sphere { <0,0,0>,1 scale <.438,.38,.438> translate <0,1.4375,0> }
   }
   difference {
      cone { <.8125,2.421875,0>,.078125 <1,2.421875,0>,.109375 }
      cone { <.812,2.421875,0>,.046875 <1.01,2.421875,0>,.078125 }
      difference {
         cylinder { <0,0,0>,<0,4,0>,2 }
         cylinder { <0,0,0>,<0,4,0>,.9999 }
      }
   }
   difference {
      torus { .484375,.078125 rotate 90*x translate <.8125,1.93749,0> }
      box { <0,1.93749,-1>,<2,0,1> }
      box { <.813,0,-1>,<2,3,1> }
      torus { .484375,.046875 rotate 90*x translate <.8125,1.93749,0> }
      cone { <.328125,1.437,0>,.109375 <.328125,1.93751,0>,.046875 }
   }
   texture { T_Glass3 } interior { I_Glass }
}


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From: Ken
Subject: Re: Glitch help please!
Date: 1 Sep 1999 18:40:11
Message: <37CDAB04.3EC3C25D@pacbell.net>
Larry Fontaine wrote:
> 
> This is the oil lamp (glass only) from the desktop scene (trapped) I
> posted on binaries.images. There is a ring of sorts in the stem of the
> glass, and I can't get rid of it. I tried adding an extra, short
> cylinder where the torus and cone met up, to see if maybe that would
> close some kind of gap, but it didn't work. Note that all differences
> used to be intersections with inverse objects. Tell me if you know what
> the problem is. Also note it may take a while to render.

I don't have time to work on this for you but you mention that it takes
a while to render which means you are doing test renders with transparent
materials. I sometimes find mistakes in my glass objects by giving them
a solid color. Two things happen. You can see creases better and you don't
have to wait as long for test renders. Something for you to think about
anyway.

-- 
Ken Tyler

See my 850+ Povray and 3D Rendering and Raytracing Links at:
http://home.pacbell.net/tylereng/index.html


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