I adapted Kenneth's version of stirred chocolate and his isosurface
functions from images to produce a red wax letter seal.  It needs a better
logo but is a good start. You'll have to imaging it on some rolled-up
parchment or sealed letter for now. I will post the scene file here too
since it is
rather short.

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Attachments:
Download 'red letter seal with logo.jpg' (82 KB)

Preview of image 'red letter seal with logo.jpg'

Here is the scene text:

//Wax letter seal by Wayne 2006
//wdecatur@yahoo.com
//adapted from Kenneth posting Subject: Re: Giving thickness to plane
surfaces and his stirred chocolate texture also posted
//in the povray newsgroups

camera {
  location  <0.0, 3.5, -5.0>
  direction 1.0*z
  right     x*image_width/image_height
  look_at   <0.0, 0.0,  0.0>
}

light_source {
  <0, 0, 0>            // light's position (translated below)
  color rgb <1, 1, 1>  // light's color
  translate <-30, 30, -30>
}

// ----------------------------------------
#include "colors.inc"
plane {
  z, 2
  hollow
  pigment { White *2.2 }
  finish { ambient .5 }
}



#declare my_pigment_function_1 =
function{
 pigment{
  image_map{"crater.bmp" map_type 0 interpolate 2 once}
    scale 2.5
    rotate 90*x
    translate <-1.25,0,-1.25>
             }
                     }


//Here's POV's CELLS pattern turned into a function...
#declare my_pigment_function_2 =
function{
 pigment{
  cells scale .025
                     }
             }

# declare wax_seal_outer_iso = union {
 isosurface{
  function{y - my_pigment_function_1 (x,y,z).gray * .4}
max_gradient 2.8
 contained_by{sphere { <0, 0, 0>, 1.0 }}
 texture{
          pigment{color rgb <.9,.1,.08>*1.1}
          finish{
                ambient .15
                diffuse .35
                phong .35
                phong_size 14
                specular .9
                roughness .004
                }
            }
                                      }  }


#declare outer_wax_ring = difference {
object {wax_seal_outer_iso}
box { <-1, -1, -1>, <1, 0.2, 1> }
                        }


#declare my_seal_function_1 =
function{
 pigment{
  image_map{"my_seal.bmp" map_type 0 interpolate 2 once}
    scale 2.5
    rotate 90*x
    translate <-1.25,0,-1.25>
             }
                     }
# declare wax_seal_inner_iso = union {
 isosurface{
  function{y - my_seal_function_1 (x,y,z).gray * .4}
max_gradient 2.8
 contained_by{sphere { <0, 0, 0>, 1.0 }}
 texture{
          pigment{color rgb <.9,.1,.08>*1.1}
          finish{
                ambient .15
                diffuse .35
                phong .35
                phong_size 14
                specular .9
                roughness .004
                }
            }
                                      }  }


#declare main_wax_seal_piece = difference {
object {wax_seal_inner_iso}
box { <-1, -1, -1>, <1, 0.0, 1> }
bounded_by { sphere { <0, 0, 0>, 0.7 } }

}


union {
object {outer_wax_ring scale <1.0,0.6,1.0> }
object {main_wax_seal_piece scale <1,1,1> }
scale <1.2,1.2,1.2> rotate x*-45
}

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Okay, I improved the logo and put it on a manuscript as an example.

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Attachments:
Download 'bookpages with wax seal.jpg' (332 KB)

Preview of image 'bookpages with wax seal.jpg'

"wayne461" <wde### [at] yahoocom> wrote:
> Okay, I improved the logo and put it on a manuscript as an example.

VERY nice, authentic wax texture (both images.) Thanks for posting your
code. I especially like the crosshatched "smudges" on the paper.

Ken

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"Kenneth" <kdw### [at] earthlinknet> wrote:
> "wayne461" <wde### [at] yahoocom> wrote:
> > Okay, I improved the logo and put it on a manuscript as an example.
>
> VERY nice, authentic wax texture (both images.) Thanks for posting your
> code. I especially like the crosshatched "smudges" on the paper.
>
> Ken


Thanks.  The wax texture is just your chocolate texture.  I changed the
phong and ambient setting for the scene with the manuscript because the
light was so bright.

The smudges on the paper were just me using photoshop with motion blurs to
find a way to quickly and easily simulate tangential lines I saw Da Vinci
use intersecting a curve in his Arundel notebook.

I thought I already posted this message so pardon me if it repeats something
I already posted.

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