POV-Ray : Newsgroups : povray.beta-test.binaries : Re: bug with bozo pattern : Re: bug with bozo pattern Server Time
16 May 2024 11:11:56 EDT (-0400)
  Re: bug with bozo pattern  
From:
Date: 27 Nov 2001 07:51:15
Message: <sp170ukgac6a9ak3dusgbm8s9dk79e2fli@4ax.com>
On Tue, 27 Nov 2001 13:18:06 +0100, Christoph Hormann <chr### [at] gmxde>
wrote:
> > > Package with good and bad images, scripts and ini-settings after moment in
> > > povray.beta-test.binaries. Broken patterns are 4B, 7B, 12A, 15A and 16A.
> > 
> > Here it is.
> 
> That's fairly simple, you used the pigments without a color map, therefore
> the bozo ones use the default bozo colo map which is quite inappropriate
> for wood.

Yes. I noticed it however most pigments loks like colored correctly even they
have no colour_map specified ? If it is correct behaviour then it is report for
documentation becouse there is no note (or I couldn't find any) about default
color_map for wood and bozo. I checked 6.7.11.36, 6.7.11.4, 6.7.1.3 and others.

Also when I use my script with pigment{wood/bozo} for objects I achived sharp
green, blue, red and white shapes for bozo and light/dark brown for wood with no
smooth transition however documentations says in 'bozo' section "If two points
are close together, the noise values at those points are close to each other."
If they aren't I expect some color_map included. But it looks like it is not
described anywhere.

>  For 15A and 16A this does not apply, but they look fairly normal to me.

Yes, they could be normal. And they have color_map specified. I wonder why some
of the pigments have color_map specidfied twice (for pigment declaration and
then again for texture declaration).

ABX
--
#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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