"Jon Berndt" <jsb### [at] hal-pcorg> wrote in message news:3a3ebb84@news.povray.org...
>
> > I think that Bob H did one of these (or something similar):
>
> It's a nice image, but the markings and dimensions of the rocket are off. I
> am being very precise on measurements and markings and other details.

You noticed... :-)  I actually never used dimensions based on actual numbers, I
measured a poster-sized photograph I have and followed what looked about right.
It should be fairly close though.
'media' is not very user friendly, everyone knows that.  I had trouble putting
5 media objects together because overlaps would mix in odd ways.
Something like this should be a start anyhow:

camera {location -15*z
        look_at 0
}

background {rgb .5}

#declare T0=density {rgb 0}

#declare T1=density {wrinkles frequency 1
                     turbulence <1,3,1>*1
                           density_map {
                                [0 rgb <.1,.5,1.25>*0]
                                [.25 rgb <.667,.5,.3667>*.125]
                                [.5 rgb <1,.75,.5>*.5]
                                [.75 rgb <.75,.5,.367>*.25]
                                [1 rgb <1,.8,.5>*.75]
                  } scallop_wave scale .4 }

#declare T2=density {wrinkles frequency 1
                     turbulence <1,3,1>*2
                           density_map {
                                [0 rgb <.1,.5,1.25>*0]
                                [.25 rgb <.667,.5,.3667>*.25]
                                [.5 rgb <1,.75,.5>*.75]
                                [.75 rgb <.75,.5,.367>*1.25]
                                [1 rgb <1,.8,.5>*1.5]
                  } scallop_wave scale .2 }

sphere { 0, 1  hollow // no_shadow
 pigment { color rgbf 1 }
 interior {
        media { method 2
                intervals 1 samples 2,2
                emission <.9,.75,.5>*.75
                absorption <.25,.33,.5>*.5
                 scattering {4,<.6,.3,.1>*.5 extinction .5}
                  density {cylindrical frequency 1
                     turbulence <1,3,1>*.2
                           density_map {
                                [0 T0]
                                [.5 T1]
                                [.67 T2]
                                [.75 T1]
                                [1 T2]
                  } ramp_wave scale .99 }
                  translate -50*clock*y // motion
        }
       // fade_distance 4 fade_power 1
           }
   scale <1,4,1> // scale change needs inverse density change
}

(requires MegaPov, as is)
Nice Saturn booster btw.

Bob H.

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