"Ian Witham" <ian### [at] hotmailcom> wrote in message
news:395b2f95@news.povray.org...
|
| >   You could vary them slightly with a
| > 'turbulence' added in: pigment {image_map{} turbulence 0.05} for close ups
|
| That's a great idea, but I've also used the same leaf images for
| bump_map's... if I add the same amount of turbulence to the image_map and
| bump_map will they still line up?

Yep, if scale, rotate, translate are the same too.  Just be careful not to
turbulate into chaos.
Example:

  texture {
    pigment {image_map {png "c:\images\IEerror.png"
       // interpolate 2 // smooth it
        once   // don't tile image, just one copy
       // filter all .75  // make 1st color mostly transparent
       // transmit 1, .75  // make 2nd color mostly transparent
      }
      // transform it to unit-size (-1 to +1)
      translate -0.5*(x+y) // center on the origin
      scale 2              // make it 2 units across
     turbulence .125
    }
    normal {bump_map {png "c:\images\IEerror.png"
        // interpolate 2 // smooth it
        once   // don't tile image, just one copy
                 } bump_size 2 // raise or lower relief
      translate -0.5*(x+y) // center on the origin
      scale 2              // make it 2 units across
     turbulence .125
    }
    finish {ambient .125 diffuse .75 specular .25 roughness .075}
  }
}

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