Thanks a lot!
I'll let you know if it works for me.

If the water doorway  opened onto a craggy narrow fissure of some sort,
you might be able to get away with having a rainbow in the air without it
being trite. Maybe a flying buttress for scale. Did I mention I like 
this one?

Thanks again,

Bill


Gail Shaw wrote:

>"Bill Naylor" <nay### [at] hotmailcom> wrote in message
>news:40070ed6$1@news.povray.org...
>  
>
>>Nice composition. I really like this.
>>I agree that a cloud of mist would be great, but how far down is the
>>    
>>
>bottom?
>
>Hmmm, haven't thought about that. Probably quite some way. I still need
>something
>there, otherwise it looks like the river just disappears.
>
>  
>
>>Great water! (code???   please...)
>>
>>    
>>
>
>Thanks. The water code is adapted from code I found elsewhere, can't
>remember where.
>If anyone recognises this code, please let me know so I can credit properly
>
>#declare T_Water =
> texture {
>  pigment { rgbf <0.975,0.975,1,0.8> }
>  finish { reflection { 0 0.85 } diffuse 0.025 specular 0.3
>conserve_energy }
> }
>
>#declare F_Water= function { pigment { granite turbulence 0.2 scale
><1,1,4>*5 } }
>
>isosurface {
> function
>{y-f_noise3d(x,y,z)*0.075-f_noise3d(x*3,y*3,z*3)*0.05+F_Water(1.5*x,1.5*y,1.
>5*z).gray*0.1+0.65 }
> contained_by { box { <-2.1,-15,-30> <2.1,1,20> } }
> accuracy 0.001
> max_gradient 4.5
> texture { T_Water }
> interior { ior 1.33 media { absorption <0.35,0.35,0.25> } }
> hollow
>}
>
>Gail
>--
>*************************************************************************
>* gai### [at] mwebcoza        *  If one is going to lose one's mind,     *
>* http://gail.rucus.net/     *  one might as well savor the experience  *
>*************************************************************************
>* This is how the world ends. Swallowed in fire, but not in darkness    *
>*************************************************************************
>
>
>  
>

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