If you cut and paste the code for the sor gold cup from the help file and move your
camera in close (-4 instead of -20, it's there
at -20 too) you get two textured bands on the stem and near the base.

  I'm using 3.5 b13 on Win '98, 600mhz,  Athlon MB.

It's doing the same thing in 3.1g, and I'm sure that I've rendered this before without
seeing these bands.

  ~Steve~

Here's the code:

camera {
  location  <0.0, 0.5, -4.0>
  direction 1.5*z
  right     x*image_width/image_height
  look_at   <0.0, 0.0,  0.0>
}

light_source {
  <0, 0, 0>
  color rgb <1, 1, 1>
  translate <-30, 30, -30>
}

  sor {
    8,
    <0.0,  -0.5>,
    <3.0,   0.0>,
    <1.0,   0.2>,
    <0.5,   0.4>,
    <0.5,   4.0>,
    <1.0,   5.0>,
    <3.0,  10.0>,
    <4.0,  11.0>
    texture { T_Gold_1B

    }
  }

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That's the old sturmian root solver problem.  Add keyword sturm to the sor
(at the end or before texture) and it will clean it up. Just looks somewhat
like a different texture has appeared but it's just mixed up surface.

--
sphere_sweep{b_spline 20<-2,-2,4>.1<-2,-1,4>.15<-1.5,1,4>.1<0,0,4>.1
<-2,0,4>.1<0,-1,4>.1<-2.5,-1,4>.1<-.5,-1,4>.1,<0,0,4>.1<1,-.5,4>.1
<0,-1,4>.1<-.5,-.5,4>.1<0,0,4>.1<1,-1,4>.1<1.5,-.25,4>.1<2,0,4>.1
<2,-.75,4>.1<1,-1,4>.1<1.5,1,4>.1<1.5,1,4>.1pigment{rgb 9}}//v3.5

"25ct" <25c### [at] lineonenet> wrote in message news:3c9c3902@news.povray.org...
> If you cut and paste the code for the sor gold cup from the help file and
move your camera in close (-4 instead of -20, it's there
> at -20 too) you get two textured bands on the stem and near the base.
>
>   I'm using 3.5 b13 on Win '98, 600mhz,  Athlon MB.
>
> It's doing the same thing in 3.1g, and I'm sure that I've rendered this
before without seeing these bands.
>
>   ~Steve~
>
> Here's the code:
>
> camera {
>   location  <0.0, 0.5, -4.0>
>   direction 1.5*z
>   right     x*image_width/image_height
>   look_at   <0.0, 0.0,  0.0>
> }
>
> light_source {
>   <0, 0, 0>
>   color rgb <1, 1, 1>
>   translate <-30, 30, -30>
> }
>
>   sor {
>     8,
>     <0.0,  -0.5>,
>     <3.0,   0.0>,
>     <1.0,   0.2>,
>     <0.5,   0.4>,
>     <0.5,   4.0>,
>     <1.0,   5.0>,
>     <3.0,  10.0>,
>     <4.0,  11.0>
>     texture { T_Gold_1B
>
>     }
>   }
>
>

Post a reply to this message

"bob h" <omn### [at] charternet> wrote in message news:3c9ca729@news.povray.org...

> That's the old sturmian root solver problem.  Add keyword sturm to the sor
> (at the end or before texture) and it will clean it up. Just looks somewhat
> like a different texture has appeared but it's just mixed up surface.


   Thanks Bob, I checked the groups for any reference to it and couldn't find
anything, so I thought I'd better check here first.

      ~Steve~


>
> --
> sphere_sweep{b_spline 20<-2,-2,4>.1<-2,-1,4>.15<-1.5,1,4>.1<0,0,4>.1
> <-2,0,4>.1<0,-1,4>.1<-2.5,-1,4>.1<-.5,-1,4>.1,<0,0,4>.1<1,-.5,4>.1
> <0,-1,4>.1<-.5,-.5,4>.1<0,0,4>.1<1,-1,4>.1<1.5,-.25,4>.1<2,0,4>.1
> <2,-.75,4>.1<1,-1,4>.1<1.5,1,4>.1<1.5,1,4>.1pigment{rgb 9}}//v3.5

Post a reply to this message