A way to create more interesting ornaments (i.e for tiles), is to
define it with some of POV-Rays builtin-functions. And to give
these  ornaments a 3D-structure, the slope map is IMHO a very
simple way.


Some examples:

//-------------------------------------------------
#include "functions.inc"

global_settings { assumed_gamma 1.5 }
light_source { <4, 5, -5>, 1}
camera {  location <0, 0, -5>   look_at 0 }
sky_sphere { pigment { rgb <0.054902, 0.219608, 0.4> } }

box {<-1, -0.5, -0.05>, <1, 0.5, 0.05>  pigment {rgb 1}
   normal {function{f_algbr_cyl1(x,y,z,1,2,-1,1,1)}
      slope_map {
         [ 0 <0, 0> ]
         [ 0.1 <0.5, 0> ]
      }
      scale <0.9, 0.9, 1>
   }
   translate <-1.005, 0.5052, 0>
}

box {<-1, -0.5, -0.05>, <1, 0.5, 0.05>  pigment {rgb 1}
   normal {function{f_algbr_cyl1(x,y,z,1,2,1,1,1)}
      slope_map {
         [ 0 <0, 0> ]
         [ 0.1 <0.5, 0> ]
      }
   }
   translate y*(-0.5052)
}

box {<-1, -0.5, -0.05>, <1, 0.5, 0.05>  pigment {rgb 1}
   normal {function{f_spiral(x,y,z,0.3,0.1,.9,0,0,1)}
      slope_map {
         [ 0 <0, 0> ]
         [ 0.1 <0.5, 0> ]
      }
      scale <0.75, 0.5, 0.5>
      rotate x*90
   }
   translate <1.005, 0.5052, 0>
}
//---------------------------------------------

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