I have been searching for the best way to get detailed depth information out
of POV-Ray (besides editing the source code).  The following code works if
the Depth_Texture is applied to every object.  However, since child objects
do not inherit parent texture, how can I plop this texture onto everything?

/*---depth.ini---*/
Output_File_Type=P
Bits_Per_Color=16
Input_File_Name=depth.pov
/*---END---*/

/*---depth.pov---*/
#declare Depth_Texture = texture
{
  pigment
  {
    spherical
    scale 655.35 //depth resolution = 0.01 [units]
    phase 0
  }
  finish
  {
    ambient 1
    diffuse 0
    specular 0
    reflection 0
  }
  translate Camera_Origin
}

#declare World = union
{
  //many objects with textures . . .
}

object
{
  World
  texture{Depth_Texture} //does not replace child textures :(
}
/*---END---*/


Thanks,

David Diel

ddi### [at] mitedu

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