Rick Measham nous apporta ses lumieres en ce 2005-02-28 21:35:
> Forgive the crosspost but I'm not sure where this belongs.
> 
> I posted a request in PBI a few days ago and haven't yet gotten a 
> workable solution. I have water that runs up onto a beach .. an idylic 
> blue water beach. However the water insists on not becoming more 
> transparent near to shore. Can anyone give me any tips? I've no idea if 
> this is a newusers question or an advanced-users question!
> 
> If you want the pictures and the scene file, look for 'The Human 
> Condition' in news://povray.binaries.images
> 
> Thanks and Cheers!
> Rick
Try this:
// Water
plane {
   y, 0.27
   //pigment { Blue }
   texture {
     pigment { rgbft <0.4,0.4,1.5,0.4,0.4>}//color red 0.4 green 0.4 blue 1.5 filter
.1 transmit 0.4 }
     finish {conserve_energy
     	reflection {0.1,0.45 fresnel}
         ambient 0.015
         diffuse 0.26
     }
     normal {    	
         bumps .5
     }
   }
   interior{ior 1.34 fade_color rgb<0.64,0.64,1.5>fade_power 3 fade_distance 0.044}
//very short fade_diatance
}
Change the beach as follow:
// Beach
union{
	sphere {
		0
		40
		scale y*0.005
		translate <10, 0.1, -7.5>
		}
	cone{<10,0.1,-7.5>,40,<10,-100,-7.5>,1000}
//this prevent the sharp edge of the flatened sphere from showing
			texture {
			pigment {
				bumps
				color_map {
					[0 rgb <255/255, 204/255, 0>]
					[1 rgb <255/255, 204/255, 0>/2]
				}
			}
			finish {
				reflection 0.0
				ambient 0.15
				diffuse 0.6
				//refraction 1// ior 1.33
			}
		}
	}

Alain

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