(sigh)

#include "colors.inc"
#include "woods.inc"
#include "functions.inc"


global_settings {

    radiosity {
      pretrace_start 0.08
      pretrace_end   0.04
      count 35

      nearest_count 5
      error_bound 1.8
      recursion_limit 3

      low_error_factor 0.5
      gray_threshold 0.0
      minimum_reuse 0.015
      brightness 1

      adc_bailout 0.01/2
    }

}

camera{ location<30,1,0> look_at<-1,1,0> }
light_source{ <2000,2000,1000> White }
background{Grey}

// mountains
isosurface{
 function{-f_ridged_mf(x,0,z, .5, 3, 5, 1, .4, 3)+y }  max_gradient 9
contained_by{box{<1,5,1>*2,-1*2}} rotate<0,0,-25>
 pigment{Brown}  translate<0,-1,0> scale <1000,400,1000>
 translate<-1000,0,0>
}


light_group{
plane {<0,1,0>,400 pigment{bozo turbulence 1 color_map{[0 rgbt 1][1 rgb .5]}
scale 350 rotate<0,0,10>} hollow scale<5,1,1> /*rotate<0,0,10>*/ no_shadow}
global_lights off
}

fog
{
  fog_type 1 distance 3000 Grey
}


#declare S1=seed(12318);


light_group {

// ground plane

plane {<0,1,0>,-1 pigment{White} normal{bozo .3 turbulence 1}}
#declare f_mbumps = function{pigment{bumps color_map{[0 Black][1 White]}
translate<-10,0,0> scale<1,1,5> rotate<0,-48,0>

}};

// the ground

//isosurface{ function{ (f_bumps(x/10,0,z/30)+y)*ln(-(x-20)+1)/5}
contained_by{ box{<-100,-2,-100>,<0,20,100>}} pigment{White}
translate<0,.4,0> scale<1,10,1> normal{bumps .3 scale .1}}
isosurface{
function{f_mbumps(x,0,z).gray-.5+y + f_bumps(x*300,0,z*300)*.0003
 +(((x-20)^2+(z-3)^2)<=15)*(1-((x-20)^2+(z-3)^2)/15)^2                   //
cabin
 +(((x-26.9)^2+(z+1.1)^2)<=.125)*(1-((x-26.9)^2+(z+1.1)^2)/.125)^3/5     //
post
 // this part carves out the river
 #declare i=0;
 #declare S1=seed(32);
 #declare r=rand(S1);
 #while(i<30)

+(((x-30+2*i)^2+(z+5-r*.3-i^2/20)^2)<=5)*(1-((x-30+2*i)^2+(z+5-r*.3-i^2/20)^
2)/5)^3*2
 #declare i=i+1;
 #end

} max_gradient 2.5 contained_by{box{<-100,-2,-30>,<40,1,30>}}
pigment{White}  normal{bozo .3 turbulence 1}}

global_lights on
}

/////////////////////////


The tough thing with this is that it is very hard to get the exact duplicate
of the problem I'm having because of the nature. POV-Ray may come up with
the window I described, or I may get a blue screen or other programs may
start to crash or the computer might freeze or I may get nothing at all,
especially if I just rebooted. It's like you have to build up enough crud
before it starts to happen, which is just what a stack overflow would do,
right?

It seems to happen most often around the time of the intersection of the
mountain and the snow. Between 50%-53%. I'm rendering at 1024x768 with AA
0.3. I don't know if you get the same results by just rendering the middle
of the screen.

Sorry, this is kind of a complex problem. : |



"Chris Becker" <cmb### [at] ritedu> wrote in message
news:3c9a9a9e$1@news.povray.org...
> Sorry, I'm an ignoramous.
>
> Windows 98, Athlon 1900+, 512meg DDR.
>
> Here's the stripped down source code (a bit long):
>
> "Alan Kong" <ako### [at] povrayWWWSPAMCOMorg> wrote in message
> news:09tk9uc0ja3vgbcnid6h4pp93n96fu6atf@4ax.com...
> > On Thu, 21 Mar 2002 17:13:37 -0500 Chris Becker wrote:
> >
> > >What is the usual cause of this? Could it be something that I changed
> right
> > >around the same time r13 came out? Or did something changed in r13 do
> this?
> > >This happens with the install compile and the VC6 compile.
> >
> >   Hi, Chris. We need a little more information, as specified at the
> > first message posted in this group, message i.d.
> > <3B94E1CF.7498B010@pacbell.net>. Also, please reduce the example scene
> > to the barest minimum that can still reproduce the problem. If we can't
> > duplicate it, we probably can't fix it. Thanks.
> >
> > --
> > Alan
> > ako### [at] povrayorg
> > a k o n g <at> p o v r a y <dot> o r g
> >
>
>

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