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Greetings,
Going through my old files, I found an isosurface that I used to produce a
very interesting shape in an old version of MegaPov I think, but using the
functions.inc and f_noise3d I get literally nothing. I've tried installing
old versions of pov and megapov, but I can't seem to locate the correct one,
maybe someone will recognize the syntax and be able to convert the
following:
#declare GridCubeOn = true;
#declare use_photons = false;
#if (GridCubeOn)
#declare Foo =
function {(noise3d(8*x, 12*y, .01)*noise3d(12*x, .01, 8*z)*noise3d(.01,
8*y, 12*z))/3}
#declare Foo1 =
function {noise3d(8*x, 12*y, .01)/3*noise3d(12*x, 8*y,
.01)/3*noise3d(8*y, 12*z, .01)/3}
#declare Foo2 =
function {noise3d(8*x, 12*y, .01)/3*noise3d(12*x, 8*y, .01)/3*noise3d(8*y,
12*z, .01)/3}
#declare GridCube =
isosurface {
function {
Foo
}
threshold 0.0001
scale 1.6
bounded_by {
box {
-4, 4
}
}
texture {
pigment {color rgb 0}
}
#if (use_photons)
photons {
separation 0.02*phd
#if(refl)
reflection on
#end
ignore_photons
}
#end
}
#declare GridCube1 =
isosurface {
function {
Foo1
}
threshold 0.0001
scale 1.6
bounded_by {
box {
-4, 4
}
}
texture {
pigment {color rgb 0}
}
#if (use_photons)
photons {
separation 0.02*phd
#if(refl)
reflection on
#end
ignore_photons
}
#end
}
#declare GridCube2 =
isosurface {
function {
Foo2
}
threshold 0.0001
scale 1.6
bounded_by {
box {
-4, 4
}
}
texture {
pigment {color rgb 0}
}
#if (use_photons)
photons {
separation 0.02*phd
#if(refl)
reflection on
#end
ignore_photons
}
#end
rotate 90*y
}
object {
GridCube
scale 1000
translate <0,0,5000>
}
object {
GridCube1
scale 1000
translate <2000,0,5000>
}
object {
GridCube2
scale 1000
translate <-2000,0,5000>
}
#debug "\nFinished Parse Of GridCube:"
#end
Post a reply to this message
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[GDS|Entropy] nous illumina en ce 2009-02-08 05:46 -->
> Greetings,
>
> Going through my old files, I found an isosurface that I used to produce a
> very interesting shape in an old version of MegaPov I think, but using the
> functions.inc and f_noise3d I get literally nothing. I've tried installing
> old versions of pov and megapov, but I can't seem to locate the correct one,
> maybe someone will recognize the syntax and be able to convert the
> following:
>
> #declare GridCubeOn = true;
> #declare use_photons = false;
>
> #if (GridCubeOn)
> #declare Foo =
> function {(noise3d(8*x, 12*y, .01)*noise3d(12*x, .01, 8*z)*noise3d(.01,
> 8*y, 12*z))/3}
> #declare Foo1 =
> function {noise3d(8*x, 12*y, .01)/3*noise3d(12*x, 8*y,
> .01)/3*noise3d(8*y, 12*z, .01)/3}
> #declare Foo2 =
> function {noise3d(8*x, 12*y, .01)/3*noise3d(12*x, 8*y, .01)/3*noise3d(8*y,
> 12*z, .01)/3}
>
> #declare GridCube =
> isosurface {
> function {
> Foo
> }
> threshold 0.0001
> scale 1.6
> bounded_by {
> box {
> -4, 4
> }
> }
> texture {
> pigment {color rgb 0}
> }
> #if (use_photons)
> photons {
> separation 0.02*phd
> #if(refl)
> reflection on
> #end
> ignore_photons
> }
> #end
> }
>
> #declare GridCube1 =
> isosurface {
> function {
> Foo1
> }
> threshold 0.0001
> scale 1.6
> bounded_by {
> box {
> -4, 4
> }
> }
> texture {
> pigment {color rgb 0}
> }
> #if (use_photons)
> photons {
> separation 0.02*phd
> #if(refl)
> reflection on
> #end
> ignore_photons
> }
> #end
> }
>
> #declare GridCube2 =
> isosurface {
> function {
> Foo2
> }
> threshold 0.0001
> scale 1.6
> bounded_by {
> box {
> -4, 4
> }
> }
> texture {
> pigment {color rgb 0}
> }
> #if (use_photons)
> photons {
> separation 0.02*phd
> #if(refl)
> reflection on
> #end
> ignore_photons
> }
> #end
> rotate 90*y
> }
>
> object {
> GridCube
> scale 1000
> translate <0,0,5000>
> }
>
> object {
> GridCube1
> scale 1000
> translate <2000,0,5000>
> }
>
> object {
> GridCube2
> scale 1000
> translate <-2000,0,5000>
> }
>
> #debug "\nFinished Parse Of GridCube:"
> #end
>
>
I can't help you for your function.
I can help with the pfotons part:
Remove the photons from the finish. Add a photons{} block to the object.
The photons block should be:
photons{target reflection on}
Just the abcence of a photons block prevent the shootong of photons toward the
object.
You also need this in the global_settings:
#if(use_photons)photons{spacing 0.02*phd autostop 0}#end
The presence of a photons block in the light_source is optional only needed if
you want to sidable all or some of the photons treatment from that light_source.
--
Alain
-------------------------------------------------
You know you've been raytracing too long when you can describe in perfect,
legal, pov syntax, how to re-create everything in your computer room using
primitives and csg operations.
fish-head
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I appreciate the effort, but only the isosurfaces are troubling me. ;-)
I've replaced the noise3d with f_noise3d, played with values etc.., but
alas, no joy.
I think it must be changes in implementation of noise3d...maybe........I
don't know what I'm talking about. ;-p
All I know, is those isos used to work way back when I made the file.
*~*
Thanks,
ian
"Alain" <ele### [at] netscape net> wrote in message
news:498f5df2$1@news.povray.org...
> [GDS|Entropy] nous illumina en ce 2009-02-08 05:46 -->
>> Greetings,
>>
>> Going through my old files, I found an isosurface that I used to produce
>> a very interesting shape in an old version of MegaPov I think, but using
>> the functions.inc and f_noise3d I get literally nothing. I've tried
>> installing old versions of pov and megapov, but I can't seem to locate
>> the correct one, maybe someone will recognize the syntax and be able to
>> convert the following:
>>
>> #declare GridCubeOn = true;
>> #declare use_photons = false;
>>
>> #if (GridCubeOn)
>> #declare Foo =
>> function {(noise3d(8*x, 12*y, .01)*noise3d(12*x, .01, 8*z)*noise3d(.01,
>> 8*y, 12*z))/3}
>> #declare Foo1 =
>> function {noise3d(8*x, 12*y, .01)/3*noise3d(12*x, 8*y,
>> .01)/3*noise3d(8*y, 12*z, .01)/3}
>> #declare Foo2 =
>> function {noise3d(8*x, 12*y, .01)/3*noise3d(12*x, 8*y,
>> .01)/3*noise3d(8*y, 12*z, .01)/3}
>>
>> #declare GridCube =
>> isosurface {
>> function {
>> Foo
>> }
>> threshold 0.0001
>> scale 1.6
>> bounded_by {
>> box {
>> -4, 4
>> }
>> }
>> texture {
>> pigment {color rgb 0}
>> }
>> #if (use_photons)
>> photons {
>> separation 0.02*phd
>> #if(refl)
>> reflection on
>> #end
>> ignore_photons
>> }
>> #end
>> }
>>
>> #declare GridCube1 =
>> isosurface {
>> function {
>> Foo1
>> }
>> threshold 0.0001
>> scale 1.6
>> bounded_by {
>> box {
>> -4, 4
>> }
>> }
>> texture {
>> pigment {color rgb 0}
>> }
>> #if (use_photons)
>> photons {
>> separation 0.02*phd
>> #if(refl)
>> reflection on
>> #end
>> ignore_photons
>> }
>> #end
>> }
>>
>> #declare GridCube2 =
>> isosurface {
>> function {
>> Foo2
>> }
>> threshold 0.0001
>> scale 1.6
>> bounded_by {
>> box {
>> -4, 4
>> }
>> }
>> texture {
>> pigment {color rgb 0}
>> }
>> #if (use_photons)
>> photons {
>> separation 0.02*phd
>> #if(refl)
>> reflection on
>> #end
>> ignore_photons
>> }
>> #end
>> rotate 90*y
>> }
>>
>> object {
>> GridCube
>> scale 1000
>> translate <0,0,5000>
>> }
>>
>> object {
>> GridCube1
>> scale 1000
>> translate <2000,0,5000>
>> }
>>
>> object {
>> GridCube2
>> scale 1000
>> translate <-2000,0,5000>
>> }
>>
>> #debug "\nFinished Parse Of GridCube:"
>> #end
> I can't help you for your function.
>
> I can help with the pfotons part:
> Remove the photons from the finish. Add a photons{} block to the object.
>
> The photons block should be:
> photons{target reflection on}
>
> Just the abcence of a photons block prevent the shootong of photons toward
> the object.
>
>
> You also need this in the global_settings:
> #if(use_photons)photons{spacing 0.02*phd autostop 0}#end
>
> The presence of a photons block in the light_source is optional only
> needed if you want to sidable all or some of the photons treatment from
> that light_source.
>
> --
> Alain
> -------------------------------------------------
> You know you've been raytracing too long when you can describe in perfect,
> legal, pov syntax, how to re-create everything in your computer room using
> primitives and csg operations.
> fish-head
>
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Wasn't it [GDS|Entropy] who wrote:
>Greetings,
>
>Going through my old files, I found an isosurface that I used to produce a
>very interesting shape in an old version of MegaPov I think, but using the
>functions.inc and f_noise3d I get literally nothing. I've tried installing
>old versions of pov and megapov, but I can't seem to locate the correct one,
>maybe someone will recognize the syntax and be able to convert the
>following:
The problem is that that particular function relies on a feature of the
old noise generator which was later considered to be undesirable, and
got fixed. You can resurrect the old noise generator by using
global_settings {noise_generator 1} but even so the details of the
structure aren't identical to what you would have seen with MegaPov 0.3
global_settings {noise_generator 1}
#include "functions.inc"
#if (GridCubeOn)
#declare Foo =
function {(f_noise3d(8*x, 12*y, .01)*f_noise3d(12*x, .01,
8*z)*f_noise3d(.01,8*y, 12*z))/3}
#declare Foo1 =
function {f_noise3d(8*x, 12*y, .01)/3*f_noise3d(12*x,
8*y,.01)/3*f_noise3d(8*y, 12*z, .01)/3}
#declare Foo2 =
function {f_noise3d(8*x, 12*y, .01)/3*f_noise3d(12*x,
8*y,.01)/3*f_noise3d(8*y, 12*z, .01)/3}
#declare GridCube =
isosurface {
function {
Foo(x/1.6,y/1.6,z/1.6)
}
threshold 0.0001
max_gradient 2
contained_by {
box {-4, 4}
}
texture {
pigment {color rgb 1}
}
}
[I changed the pigment from rgb 0, because otherwise I get nothing but
black in both MegaPov 0.3 and PovRay 3.6]
--
Mike Williams
Gentleman of Leisure
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Mike you are the man! :-D
That fixed it! And I appreciate the background on why it broke in the first
place, its always good to understand the source of any particular problem.
Thats one more 10-11yo scene file resurrected!
ian
"Mike Williams" <nos### [at] econymdemoncouk> wrote in message
news:rlO### [at] econymdemoncouk...
> Wasn't it [GDS|Entropy] who wrote:
>>Greetings,
>>
>>Going through my old files, I found an isosurface that I used to produce a
>>very interesting shape in an old version of MegaPov I think, but using the
>>functions.inc and f_noise3d I get literally nothing. I've tried installing
>>old versions of pov and megapov, but I can't seem to locate the correct
>>one,
>>maybe someone will recognize the syntax and be able to convert the
>>following:
>
> The problem is that that particular function relies on a feature of the
> old noise generator which was later considered to be undesirable, and
> got fixed. You can resurrect the old noise generator by using
> global_settings {noise_generator 1} but even so the details of the
> structure aren't identical to what you would have seen with MegaPov 0.3
>
>
> global_settings {noise_generator 1}
> #include "functions.inc"
>
> #if (GridCubeOn)
> #declare Foo =
> function {(f_noise3d(8*x, 12*y, .01)*f_noise3d(12*x, .01,
> 8*z)*f_noise3d(.01,8*y, 12*z))/3}
> #declare Foo1 =
> function {f_noise3d(8*x, 12*y, .01)/3*f_noise3d(12*x,
> 8*y,.01)/3*f_noise3d(8*y, 12*z, .01)/3}
> #declare Foo2 =
> function {f_noise3d(8*x, 12*y, .01)/3*f_noise3d(12*x,
> 8*y,.01)/3*f_noise3d(8*y, 12*z, .01)/3}
>
> #declare GridCube =
> isosurface {
> function {
> Foo(x/1.6,y/1.6,z/1.6)
> }
> threshold 0.0001
> max_gradient 2
> contained_by {
> box {-4, 4}
> }
> texture {
> pigment {color rgb 1}
> }
> }
>
>
> [I changed the pigment from rgb 0, because otherwise I get nothing but
> black in both MegaPov 0.3 and PovRay 3.6]
>
> --
> Mike Williams
> Gentleman of Leisure
>
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