Hi!

I tried to make something small with isosurfaces and it doesn't map the
textures correctly. That's how it looks like: (
http://img339.imageshack.us/img339/7260/untitled3pw8.png ).

As you can see, the texture-pattern changes depending on the cosinus. Does
anyone have an idea how to prevent that? I really don't get why it does
that :<

Any solution would truly be great so thanks a lot in advance! :D

This is the code:

  #include "colors.inc"
  #include "textures.inc"

  camera {
 location <5,5,-9>
 look_at <0,-2,0>
  }
  light_source {<1,1,-1>*50 color rgb 1}

  isosurface {
 function {(cos(sqrt(x*x+z*z)) + y)}
 threshold   1
 max_gradient  1.5
 contained_by {box {<-4,-2,-4>,<4,2,4>}}
 pigment {
  checker
  color Black
  color White
 }
  }

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