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Am 26.02.2019 um 11:15 schrieb Thomas de Groot:
> On 24-2-2019 20:20, MichaelJF wrote:
>> Hi Thomas,
>> this time a didn't click accidentally into the image while converting
>> it to jpg with the GIMP, but with purpose. In the marked area you can
>> see the sharp edges I mean. The code was
>>
>> #if(SteamFog)
>> #declare DensBoden1= density {
>> agate
>> agate_turb 1
>> density_map {
>> [ 0 rgb <1,1,1>/5 ]
>> //[ 0.02 rgb <1,1,1> ]
>> [ 0.03 rgb <0,0,0> ]
>> [ 1 rgb <0,0,0> ]
>> }
>> }
>>
>> #declare DensBoden3= density {
>> agate
>> agate_turb 1
>> density_map {
>> [ 0 rgb <1,1,1>/5 ]
>> //[ 0.02 rgb <1,1,1> ]
>> [ 0.02 rgb <0,0,0> ]
>> [ 1 rgb <0,0,0> ]
>> }
>> scale <5,50,5>
>> //warp { turbulence <0.5,0.1,0.5> }
>> //rotate <0,90,0>
>> }
>>
>> #declare DensLuft = density {
>> rgb <0,0,0>
>> }
>> box { <-150,0.001,-15>,<150.01,1,150> pigment { rgbt 1 } hollow
>> interior {
>> media {
>> scattering { 2, White/5 }
>> //absorption <0,0.25,1>
>> //intervals 25
>> samples 64
>> density {
>> gradient y
>> density_map {
>> [ 0 DensBoden1 ]
>> [ 0.5 DensBoden1 ]
>> [ 0.6 DensLuft ]
>> [ 1 DensLuft ]
>> }
>> scale <1,2,1> translate <0,-0.5,0> // avoid
repetition
>> at height 1
>> warp { turbulence <0.01,0.4,0.01> }
>> }
>> }
>> media {
>> scattering { 2, White/5 }
>> //absorption <0,0.25,1>
>> //intervals 25
>> samples 64
>> density {
>> gradient y
>> density_map {
>> [ 0 DensBoden3 ]
>> [ 0.5 DensBoden3 ]
>> [ 0.6 DensLuft ]
>> [ 1 DensLuft ]
>> }
>> scale <1,2,1> translate <0,-0.5,0> // avoid
repetition
>> at height 1
>> warp { turbulence <0.01,0.3,0.01> }
>> }
>> }
>> #if(GlobalFog)
>> media { scattering {2, White/5 } density { rgb 0.001 } }
>> #end
>> }
>> }
>> #if(GlobalFog)
>> box { <-100,1.001,-5.9>,<100,25,130> pigment { rgbt 1} hollow
>> interior {
>> media { scattering {2, White/5 } density { rgb 0.0001 } }
>> }
>> }
>> #end
>> #end
>>
>> GlobalFog was activated. May be I have overlooked some thing or the
>> other.
>>
>
> My first tests of your code confirms me that the sharp edge is the
> result of the container boundary, not of any different behaviour of
> density.
>
> I want to test different options yet.
>
Hm,
the problem seems to be within the second media statement (the first
produces some ground noise only). The container boundary is at level y=1
(y is up here). The transition between DensBoden3 and DensLuft(=nothing)
is between 0.5 and 0.6 scaled to 1 and 1.2 but then translated to 0.5
and 0.7 which is beneath the container boundary for sure.
Many thanks
Michael
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