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On Mon, 19 Nov 2001 13:27:24 +0200, Kari Kivisalo <ray### [at] engineer com> wrote:
> This is how gamma in povray works.
Thanks, if it is all true it is best ascetic tutorial about it :-)
Why it can't be described within documentation this short way ?
ABX
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#declare _=function(a,b,x){((a^2)+(b^2))^.5-x}#default {pigment{color rgb 1}}
union{plane{y,-3}plane{-x,-3}finish{reflection 1 ambient 0}}isosurface{ //ABX
function{_(x-2,y,1)|_((x+y)*.7,z,.1)|_((x+y+2)*.7,z,.1)|_(x/2+y*.8+1.5,z,.1)}
contained_by{box{<0,-3,-.1>,<3,0,.1>}}translate z*15finish{ambient 1}}//POV35
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Try using another image format (eg. tga) and see if the problem still happens
there. If it doesn't happen, then the problem is simply the wrong PNG gamma
correction value. If it does, then the problem is somewhere else.
--
#macro N(D,I)#if(I<6)cylinder{M()#local D[I]=div(D[I],104);M().5,2pigment{
rgb M()}}N(D,(D[I]>99?I:I+1))#end#end#macro M()<mod(D[I],13)-6,mod(div(D[I
],13),8)-3,10>#end blob{N(array[6]{11117333955,
7382340,3358,3900569407,970,4254934330},0)}// - Warp -
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Skiba wrote:
> Why it can't be described within documentation this short way ?
>
It will be.
Ingo
--
Photography: http://members.home.nl/ingoogni/
Pov-Ray : http://members.home.nl/seed7/
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On Mon, 19 Nov 2001 13:27:24 +0200, Kari Kivisalo <ray### [at] engineer com> wrote:
>Recommended value for assumed_gamma is 1.
But there is another question: what is the fastest way of adjusting designed
enviroment_map to be rerendered with assumed_gamma 1? Adjusting could be started
from calculated factor for color values? How calculate this ?
ABX
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#declare _=function(a,b,x){((a^2)+(b^2))^.5-x}#default {pigment{color rgb 1}}
union{plane{y,-3}plane{-x,-3}finish{reflection 1 ambient 0}}isosurface{ //ABX
function{_(x-2,y,1)|_((x+y)*.7,z,.1)|_((x+y+2)*.7,z,.1)|_(x/2+y*.8+1.5,z,.1)}
contained_by{box{<0,-3,-.1>,<3,0,.1>}}translate z*15finish{ambient 1}}//POV35
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