mon### [at] stinet news:3f0d9ebb@news.povray.org

Hi,
I would try to change some settings:

> Brightness:8
brightness 1

> Count:1600
if YOu want... but IMHO 300 would be enought

> Distance max:1
isn't this setting deprected in pov 3.5 ?

> Error Bound:  .001
IMHO .10 would realy be enought

> Gray threshold: .5
1.0

> Low error Factor:  .001
.60 

> Min Reuse:  .004
or even little smaller

> Nearest count:  20
> Recursion limit:  1
3..5 or more


-- 
#macro g(U,V)(.4*abs(sin(9*sqrt(pow(x-U,2)+pow(y-V,2))))*pow(1-min(1,(sqrt(
pow(x-U,2)+pow(y-V,2))*.3)),2)+.9)#end#macro p(c)#if(c>1)#local l=mod(c,100
);g(2*div(l,10)-8,2*mod(l,10)-8)*p(div(c,100))#else 1#end#end light_source{
y 2}sphere{z*20 9pigment{function{p(26252423)*p(36455644)*p(66656463)}}}//M

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Just one question.  When I raise the recursion limit, the redering time
increases ALOT.  Is this normal?  When I say alot I mean like 15 to 20 times
more.  Thanks for the settings also.  I am trying them right now.
"Rafal 'Raf256' Maj" <spa### [at] raf256com> wrote in message
news:Xns### [at] 204213191226...
> mon### [at] stinet news:3f0d9ebb@news.povray.org
>
> Hi,
> I would try to change some settings:
>
> > Brightness:8
> brightness 1
>
> > Count:1600
> if YOu want... but IMHO 300 would be enought
>
> > Distance max:1
> isn't this setting deprected in pov 3.5 ?
>
> > Error Bound:  .001
> IMHO .10 would realy be enought
>
> > Gray threshold: .5
> 1.0
>
> > Low error Factor:  .001
> .60
>
> > Min Reuse:  .004
> or even little smaller
>
> > Nearest count:  20
> > Recursion limit:  1
> 3..5 or more
>
>
> --
> #macro
g(U,V)(.4*abs(sin(9*sqrt(pow(x-U,2)+pow(y-V,2))))*pow(1-min(1,(sqrt(
> pow(x-U,2)+pow(y-V,2))*.3)),2)+.9)#end#macro p(c)#if(c>1)#local
l=mod(c,100
> );g(2*div(l,10)-8,2*mod(l,10)-8)*p(div(c,100))#else 1#end#end
light_source{
> y 2}sphere{z*20
9pigment{function{p(26252423)*p(36455644)*p(66656463)}}}//M

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On Thu, 10 Jul 2003 11:10:24 -0700, "ran102" <mon### [at] stinet> wrote:
> Just one question.  When I raise the recursion limit, the redering time
> increases ALOT.  Is this normal?  When I say alot I mean like 15 to 20 times
> more.  Thanks for the settings also.  I am trying them right now.

There is no linear dependency between recursion limit and number of traced rays.

Read interesting tutorial about radiosity in manual ?
http://www.google.com/search?q=radiosity+tutorial+POV%2DRay

ABX

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"Rafal 'Raf256' Maj" <spa### [at] raf256com> wrote in message
news:Xns### [at] 204213191226...
> > Gray threshold: .5
> 1.0

I think this should be 0, not 1.0. A setting of 1.0 allows no color bleeding.

Andy Cocker

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In article <3f0d9ebb@news.povray.org> , "ran102" <mon### [at] stinet> wrote:

>  Here is a picture of the scene.

Please do not post binary attachments to non-binary groups.  Please read the
messages, in particular "Welcome To The POV-Ray News Groups" in the
povray.announce.frequently-asked-questions group for details.

    Thorsten

____________________________________________________
Thorsten Froehlich
e-mail: mac### [at] povrayorg

I am a member of the POV-Ray Team.
Visit POV-Ray on the web: http://mac.povray.org

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mon### [at] stinet news:3f0dac11@news.povray.org

> Just one question.  When I raise the recursion limit, the redering time
> increases ALOT.  Is this normal?

Yes.
I suggest to use in radiosity adc_bailout instead of recursion limit

a) for pre-tests
recursion_limit 3 adc_bailout 1/64

b) normal
recursion_limit 5 adc_bailout 1/128

c) perfect
recursion_limit 10 adc_bailout 1/256

-- 
#macro g(U,V)(.4*abs(sin(9*sqrt(pow(x-U,2)+pow(y-V,2))))*pow(1-min(1,(sqrt(
pow(x-U,2)+pow(y-V,2))*.3)),2)+.9)#end#macro p(c)#if(c>1)#local l=mod(c,100
);g(2*div(l,10)-8,2*mod(l,10)-8)*p(div(c,100))#else 1#end#end light_source{
y 2}sphere{z*20 9pigment{function{p(26252423)*p(36455644)*p(66656463)}}}//M

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Xns### [at] 204213191226...
> > Recursion limit:  1
> 3..5 or more

This is definitely overkill. For practical purposes, recusion is not a
measure of quality. Most scenes look good enough with recursion 1, many can
benefit from 2 (if one can afford it) and some particular settings may
deserve 3. Higher values usually serve no purpose, apart slowing down
rendering and making the scene looking washed-out.

G.

--
**********************
http://www.oyonale.com
**********************
- Graphic experiments
- POV-Ray and Poser computer images
- Posters

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Xns### [at] 204213191226...
> mon### [at] stinet news:3f0dac11@news.povray.org

> I suggest to use in radiosity adc_bailout instead of recursion limit

If I'm not mistaken (and I wish I were), adc_bailout in radiosity is bugged
and simply doesn't work (adc_bailout in reflection works fine).
Until this is fixed, putting adc_bailout 1/2000, adc_bailout 1/256 or
adc_bailout 200 give the same result. Just test it :(

G.

--
**********************
http://www.oyonale.com
**********************
- Graphic experiments
- POV-Ray and Poser computer images
- Posters

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ABX wrote:

>Read interesting tutorial about radiosity in manual ?
>http://www.google.com/search?q=radiosity+tutorial+POV%2DRay

That tutorial is heroic - I've found it extremely useful.

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Gilles Tran <git### [at] wanadoofr> wrote:
> (adc_bailout in reflection works fine).

  Wasn't it so that in reflection/refraction it didn't work? (Could be
both, though.)

-- 
plane{-x+y,-1pigment{bozo color_map{[0rgb x][1rgb x+y]}turbulence 1}}
sphere{0,2pigment{rgbt 1}interior{media{emission 1density{spherical
density_map{[0rgb 0][.5rgb<1,.5>][1rgb 1]}turbulence.9}}}scale
<1,1,3>hollow}text{ttf"timrom""Warp".1,0translate<-1,-.1,2>}//  - Warp -

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