Check out the image I just posted here:

http://www.tron-sector.com/forums/default.aspx?do=top&id=274417

to see the direction this is going.

I've got this coded so I can animate the trail and I need to add the fixed
lines of white that will be added as the bike moves along its path at
regular intervals.  I thought something like this would work and cause
where ever the trail passed through one of the fixes cylinders to be
assigned the texture "bright_white" and use the complicated moving
spherical texture map to be used outside the cylinders.  The example I
was copying was a pigment object pattern.  Can the same effect be used
on textures?  If so do I just have a syntax problem below.  The variable
clock1 below will be replaced with clock in the final animation.  I've just
renamed it so I could manually assign it for making quick test renders.

Can anyone help?
Carl

object {path1_light_trail
  texture {
    object {
      union {
        cylinder {path1_spline(0.15), path1_spline(0.15)+231*y, 20}
        cylinder {path1_spline(0.35), path1_spline(0.35)+231*y, 20}
        cylinder {path1_spline(0.55), path1_spline(0.55)+231*y, 20}
        cylinder {path1_spline(0.75), path1_spline(0.75)+231*y, 20}
        cylinder {path1_spline(0.95), path1_spline(0.95)+231*y, 20}
      }
      texture {bright_white}
    }
    spherical
    texture_map {
      [0    pigment{Red}]
      [0.05 pigment{Red}]
      [0.05 bright_white11]
      [0.10 pigment{Red}]
      [0.10 bright_white10]
      [0.15 bright_white11]
      [0.15 bright_white9]
      [0.20 bright_white10]
      [0.20 bright_white8]
      [0.25 bright_white9]
      [0.25 bright_white7]
      [0.30 bright_white8]
      [0.30 bright_white6]
      [0.35 bright_white7]
      [0.35 bright_white5]
      [0.40 bright_white6]
      [0.40 bright_white4]
      [0.45 bright_white5]
      [0.45 bright_white3]
      [0.50 bright_white4]
      [0.50 bright_white2]
      [0.55 bright_white3]
      [0.55 bright_white1]
      [0.60 bright_white2]
      [0.60 bright_white]
      [0.65 bright_white1]
      [0.65 bright_white]
      [1    bright_white0]
      scale 600 translate path1_spline(clock1+path1_offset)+85*y
    }
  }
}

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