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Hi,
I wonder if I need to change my PC. It is a Pentium II notebook,
with 256MB memory runing NT4 at ??unknown MHz??
It took me about 20 hours to render the following code.
Any one to check with a more recent machine?
#include "colors.inc"
#include "metals.inc"
#include "functions.inc"
light_source
{
<10, 10, 10>
color rgb 1.0
}
light_source
{
<-5, -5, -10>
color rgb 1.0
}
camera
{
location <0.0 , 5.0 ,-7.0>
look_at <0.0 , 0.0 , 0.0>
right x*image_width/image_height
}
// function(x,y,z) { -(sin(5*sqrt(x*x + z*z)+0.00001))/(5*sqrt(x*x +
z*z)+0.00001) + y } // onde
// function {
f_spiral(sin(3*atan2(z,x)),y,-3+sqrt(x^2+z^2),0.3,0.1,3,1,1,1.5) } //
disque avec 6 spirales
isosurface {
function {
f_spiral(sin(3*atan2(z,x)),-3+sqrt(x^2+z^2+y^2),y,0.3,0.1,3,1,1,1.5) }
// alternative declared function
contained_by { sphere { 0, 3.2 } } // container shape
//threshold 0.0 // optional threshold value for
isosurface [0.0]
accuracy 0.001 // accuracy of calculation
[0.001]
max_gradient 11 // maximum gradient the
function can have [1.1]
//evaluate 1, 1.2, 0.99 // evaluate the maximum gradient
//max_trace 1 // maybe increase for use in CSG
[1]
texture {
bozo
texture_map {
[0 T_Gold_3C]
[0.25 T_Gold_3E]
[0.5 T_Chrome_3E]
[0.75 T_Chrome_3E]
[1 T_Gold_3C]
}
}
}
with this ini file:
[1024x768, AA 0.3]
Width=1024
Height=768
Antialias=On
Antialias_Threshold=0.3
Post a reply to this message
Attachments:
Download 'essai_iso2.jpg' (62 KB)
Preview of image 'essai_iso2.jpg'
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Chaps wrote:
> It took me about 20 hours to render the following code.
> Any one to check with a more recent machine?
> [1024x768, AA 0.3]
I don't think 20 is so bad, taking into account that you used multiple
lights, isosurfaces and reflective textures, and rendered picture with
anti-aliasing and to quite big size. Isosurfaces are not fast.
--
/"\ | iki.
\ / ASCII Ribbon Campaign | fi/
X Against HTML Mail | zds
/ \
Post a reply to this message
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Chaps wrote:
> I wonder if I need to change my PC. It is a Pentium II notebook,
> with 256MB memory runing NT4 at ??unknown MHz??
>
> It took me about 20 hours to render the following code.
> Any one to check with a more recent machine?
I rendered it in 53 min at 512x384, AA0.3 on my 1.333MHz Athlon. That
would make it about 3.53 hours at your resolution. My 300MHz PII takes
about 5 times as long, ie 17.65 hours, so if your PII is 266MHz, it is
running as it should.
/Ib
----------------------------
Gallery: http://www.ibras.dk
Post a reply to this message
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It took 7h8m27s in the Celeron 600MHz 128MB RAM I use at work, at 1024x768
AA0.3.
Ruy
"Chaps" <cha### [at] yahoo com> escreveu na mensagem
news:3bbc99c0@news.povray.org...
> Hi,
> I wonder if I need to change my PC. It is a Pentium II notebook,
> with 256MB memory runing NT4 at ??unknown MHz??
>
> It took me about 20 hours to render the following code.
> Any one to check with a more recent machine?
>
> #include "colors.inc"
> #include "metals.inc"
> #include "functions.inc"
>
> light_source
> {
> <10, 10, 10>
> color rgb 1.0
> }
>
> light_source
> {
> <-5, -5, -10>
> color rgb 1.0
> }
>
>
> camera
> {
> location <0.0 , 5.0 ,-7.0>
> look_at <0.0 , 0.0 , 0.0>
> right x*image_width/image_height
> }
>
>
> // function(x,y,z) { -(sin(5*sqrt(x*x + z*z)+0.00001))/(5*sqrt(x*x
+
> z*z)+0.00001) + y } // onde
> // function {
> f_spiral(sin(3*atan2(z,x)),y,-3+sqrt(x^2+z^2),0.3,0.1,3,1,1,1.5) }
//
> disque avec 6 spirales
>
> isosurface {
> function {
> f_spiral(sin(3*atan2(z,x)),-3+sqrt(x^2+z^2+y^2),y,0.3,0.1,3,1,1,1.5) }
> // alternative declared function
> contained_by { sphere { 0, 3.2 } } // container shape
> //threshold 0.0 // optional threshold value
for
> isosurface [0.0]
> accuracy 0.001 // accuracy of calculation
> [0.001]
> max_gradient 11 // maximum gradient the
> function can have [1.1]
> //evaluate 1, 1.2, 0.99 // evaluate the maximum
gradient
> //max_trace 1 // maybe increase for use in
CSG
> [1]
> texture {
> bozo
> texture_map {
> [0 T_Gold_3C]
> [0.25 T_Gold_3E]
> [0.5 T_Chrome_3E]
> [0.75 T_Chrome_3E]
> [1 T_Gold_3C]
> }
> }
> }
>
> with this ini file:
>
> [1024x768, AA 0.3]
> Width=1024
> Height=768
> Antialias=On
> Antialias_Threshold=0.3
>
>
>
>
>
Post a reply to this message
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5 hours 2 minutes and 10 seconds on a Pentium 4 1.4Ghz, WinME.
My Athlon 1.3 Ghz at home is faster, but I ran this at the office.
Harold
"Chaps" <cha### [at] yahoocom> wrote in message
news:3bbc99c0@news.povray.org...
> Hi,
> I wonder if I need to change my PC. It is a Pentium II notebook,
> with 256MB memory runing NT4 at ??unknown MHz??
>
> It took me about 20 hours to render the following code.
> Any one to check with a more recent machine?
Post a reply to this message
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All right, I'm going to buy a new one.
Chaps.
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"Chaps" <cha### [at] yahoocom> wrote :
>
> All right, I'm going to buy a new one.
We just got a new used computer store in our town, PII 200-400s in the
$20 range. I am thinking about setting up a small network just to send
renders to a spare 400.
Post a reply to this message
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> We just got a new used computer store in our town, PII 200-400s in the
> $20 range. I am thinking about setting up a small network just to send
> renders to a spare 400.
>
Do they ship overseas? If so, how much do they charge?
Post a reply to this message
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"Ruy" <ruy### [at] hipernetcombr> wrote in message
news:3bbdf47a@news.povray.org...
>
> > We just got a new used computer store in our town, PII 200-400s in
the
> > $20 range. I am thinking about setting up a small network just to send
> > renders to a spare 400.
> >
>
> Do they ship overseas? If so, how much do they charge?
I doubt it, but I could ask. They buy replaced equipment from
corporations, surely that is happening in other countries, if not now, soon.
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> I doubt it, but I could ask. They buy replaced equipment from
> corporations, surely that is happening in other countries, if not now,
soon.
Oh it's happening alright, but not anywhere near the $20 range...
Anyway, if it is a local store I also doubt they would be willing to engage
the paperwork hassle that the Brazilian government would unleash at hem like
a pack of rabid dobermanns...
Thanks,
Ruy
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"Ruy" <ruy### [at] hipernetcombr> wrote :
>
> Anyway, if it is a local store I also doubt they would be willing to
engage
> the paperwork hassle that the Brazilian government would unleash at hem
like
> a pack of rabid dobermanns...
Yeah, I hear that shipping and import would make the price back up to
the $2000-3000 range.
Post a reply to this message
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Chaps wrote:
>It took me about 20 hours to render the following code.
Nice function!
Try following code.
R. Suzuki
----------------------------------
#include "colors.inc"
#include "metals.inc"
#include "functions.inc"
global_settings{max_trace_level 4}
light_source
{
<10, 10, 10>
color rgb 1.0
}
light_source
{
<-5, -5, -10>
color rgb 1.0
}
camera
{
location <0.0 , 5.0 ,-7.0>
look_at <0.0 , 0.0 , 0.0>
right x*image_width/image_height
}
isosurface {
function {
max(f_spiral(sin(3*atan2(z,x)),-3+f_r(x,y,z),y,0.3,0.1,3,1,1,1.5),
(-0.2+abs(-3.0+f_r(x,y,z)))*1.5)}
contained_by { sphere { 0, 3.2 } }
//threshold 0.0
accuracy 0.001
max_gradient 1.5
// evaluate 1, 1.2, 0.99
max_trace 1
texture {
bozo
texture_map {
[0 T_Gold_3C]
[0.25 T_Gold_3E]
[0.5 T_Chrome_3E]
[0.75 T_Chrome_3E]
[1 T_Gold_3C]
}
}
}
Post a reply to this message
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"R. Suzuki" <r-s### [at] aistgojp> escreveu na mensagem
news:3bbe4bb8@news.povray.org...
> Nice function!
> Try following code.
>
> R. Suzuki
<Snip>
I just did, it too the same Celeron 600MHz 128MB RAM I use at work, at
1024x768 AA0.3, just 2h14m53s, as opposed to 7h8m27s I got with the previous
version of the equation, or only 31.5% of those 7+ hours.
I haven't taken the time to study both equations, so excuse me for being
lazy and asking the question: how come?
Ruy
Post a reply to this message
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"Ruy" <ruy### [at] hipernetcombr> wrote in message
news:3bc1dc5b$1@news.povray.org...
> I just did, it too the same Celeron 600MHz 128MB RAM I use at work, at
> 1024x768 AA0.3, just 2h14m53s, as opposed to 7h8m27s I got with the
previous
> version of the equation, or only 31.5% of those 7+ hours.
>
> I haven't taken the time to study both equations, so excuse me for being
> lazy and asking the question: how come?
Sorry for the late reply.
The best function for "isosurface" (the method 2 in MEGA POV) is a function
which
has constant gradient, for example, f(x,y,z)=abs(x),
f(x,y,z)=sqrt(x^2+y^2+z^2), etc.
(The function in the POV help file (6.5.4.2) is not the best function for
"isosurface".)
In some cases, you can increase the rendering speed by combining such good
functions.
R. Suzuki
Post a reply to this message
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