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Yeah, those mountains really look very good. Do we get the source as a Christmas
present ;)
Ryan
"Aaron Gillies" <bee### [at] snicker org> wrote in message
news:3fe5bd0c$1@news.povray.org...
> Christoph:
>
> Nice. This might be the best of your many landscapes so far.
>
> Aaron
>
>
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Nice.
I just found and downloaded the new version of lightsys. Any idea why it
doesn't work with MegaPOV1.0 ? It works with POV3.5 !
Yesterday I played with the skylight macro (apparently an older version from
this news archieve) but I ran into many problems with light intensity. The
sky around the sun couldn't get bright enough to give correct reflections.
Has this issue been addressed?
Regards,
Hugo
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Very nice image, Christoph. Excellent for a quick christmas card,
indeed. No snow around here to check realism, sorry... :)
> The sky is made with the skylight macro from Jaime's lightsys:
To be honest, this version of skylight.inc is the work of Philippe
Debar, adapted by Ive to work with Lightsys: I even don't remember if I
myself done any little teaking...
I don't know if the results are very accurate, but it gives slighty
nicer results than the original version.
--
Jaime
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Hugo Asm wrote:
> I just found and downloaded the new version of lightsys. Any idea why it
> doesn't work with MegaPOV1.0 ? It works with POV3.5 !
How? ...what's the error? I can't figure why it will not work (I
don't have MegaPOV right now to test).
> Yesterday I played with the skylight macro (apparently an older version from
> this news archieve) but I ran into many problems with light intensity. The
> sky around the sun couldn't get bright enough to give correct reflections.
> Has this issue been addressed?
Hmmm... I think the answer is no, but try yourself, please.
--
Jaime
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From: Hugo Asm
Subject: Re: Merry Christmas - Lightsys error message
Date: 22 Dec 2003 16:31:46
Message: <3fe762c2@news.povray.org>
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> How? ...what's the error? I can't figure why it will not work
> (I don't have MegaPOV right now to test).
Glad to see you stopped by! The updated lightsys is great! The bug is a bit
difficult for me to track down. The error message prevents all your demos /
templates / tests to parse. I have 4 versions of POV-Ray installed. They all
claim to be based on the POV3.5 source, but your macros only work in 2
versions:
Official POV3.5 = works.
Unofficial MLpov 0.81 = works.
Unofficial POVman 1.0 = breaks.
Unofficial MegaPOV1.0 = breaks.
Here's an example of the error message:
File: demo_cyndi_cubes.pov Line: 38
#declare LC1 = EmissiveSpectrum(ES_Osram_CoolFluor_36w) <----ERROR
Parse Error: Expected '( or [', ) found instead
Returned from renderer with error status
When I add () it complains that no value was found in between the
parantheses. When I write (1) it breaks the macros. Maybe it has something
to do with splines, since "ES_Osram_CoolFluor_36w" refer to a spline...(?)
Best regards,
Hugo
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On Mon, 22 Dec 2003 22:32:19 +0100, "Hugo Asm" <hua### [at] post3 tele dk> wrote:
> #declare LC1 = EmissiveSpectrum(ES_Osram_CoolFluor_36w) <----ERROR
> Parse Error: Expected '( or [', ) found instead
> Returned from renderer with error status
>
> When I add () it complains that no value was found in between the
> parantheses. When I write (1) it breaks the macros. Maybe it has something
> to do with splines, since "ES_Osram_CoolFluor_36w" refer to a spline...(?)
Yes, there is known problem of spline being parameter. It is fixed for next
release, meantime try to add spline{} around ES_Osram_CoolFluor_36w. It should
help. Sorry for inconvenience.
ABX
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Jaime Vives Piqueres wrote:
>
> Very nice image, Christoph. Excellent for a quick christmas card,
> indeed. No snow around here to check realism, sorry... :)
>
Thanks.
The snow is indeed the weak point - i played with the idea of a
subsurface scattering version but this scene is not fast enough and the
geometry is not that good to show the scattering anyway.
>> The sky is made with the skylight macro from Jaime's lightsys:
>
>
> To be honest, this version of skylight.inc is the work of Philippe
> Debar, adapted by Ive to work with Lightsys: I even don't remember if I
> myself done any little teaking...
>
> I don't know if the results are very accurate, but it gives slighty
> nicer results than the original version.
The problem i have with the skylight macro is that it does not offer
much control over the colors. I used a different light color for the
sky than for the light source to have more freedom in that part.
Another thing is of course that the use of a mesh for the sky is
certainly not the best solution - although it is of course the only
viable one with standard POV. A feature to have image_maps based on an
internal array (or an ascii hdr file format) would be useful for this.
Christoph
--
POV-Ray tutorials, include files, Sim-POV,
HCR-Edit and more: http://www.tu-bs.de/~y0013390/
Last updated 25 Oct. 2003 _____./\/^>_*_<^\/\.______
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Ryan Bennitt wrote:
> Yeah, those mountains really look very good. Do we get the source as a Christmas
> present ;)
The mountains are actually quite simple, the structure is made with a
f_ridged_mf() function and the coloring with a slope pattern. I posted
examples for this in the past:
Subject: Re: iso - ridged mf question
Date: Mon, 12 Mar 2001 19:20:26 +0100
Newsgroups: povray.unofficial.patches
From: Christoph Hormann <chr### [at] gmx de>
news://news.povray.org/3AAD136A.E955EBF@gmx.de
http://news.povray.org/3AAD136A.E955EBF@gmx.de
Subject: Re: Isosurface troble
Date: Mon, 05 Aug 2002 22:58:41 +0200
Newsgroups: povray.general
From: Christoph Hormann <chr### [at] gmx de>
news://news.povray.org/3D4EE701.AF500714@gmx.de
http://news.povray.org/3D4EE701.AF500714@gmx.de
Subject: Re: hf and slope
Date: Wed, 21 Mar 2001 17:08:21 +0100
Newsgroups: povray.advanced-users
From: Christoph Hormann <chr### [at] gmx de>
news://news.povray.org/3AB8D1F5.7D4595C7@gmx.de
http://news.povray.org/3AB8D1F5.7D4595C7@gmx.de
Christoph
--
POV-Ray tutorials, include files, Sim-POV,
HCR-Edit and more: http://www.tu-bs.de/~y0013390/
Last updated 25 Oct. 2003 _____./\/^>_*_<^\/\.______
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Christoph Hormann wrote:
> The snow is indeed the weak point - i played with the idea of a
> subsurface scattering version but this scene is not fast enough and the
> geometry is not that good to show the scattering anyway.
Well, SSS will have made it a christmas card for next year... :)
> The problem i have with the skylight macro is that it does not offer
> much control over the colors. I used a different light color for the
> sky than for the light source to have more freedom in that part.
By "not much control" you mean really "no control at all", isn't? I
think this is a "feature", the main feature for a sky model, IMHO: I
don't have to think on the colors. Of course, you can always ignore
SunColor and use whatever you want for a concrete artistic effect. I
tried for example using a blackbody between 2000 and 6500 K, depending
on the altitude, and it also works nicely.
> Another thing is of course that the use of a mesh for the sky is
> certainly not the best solution - although it is of course the only
> viable one with standard POV. A feature to have image_maps based on an
> internal array (or an ascii hdr file format) would be useful for this.
Yes, the mesh is a bit slow to generate when you need great detail on
the sky, to avoid seing the triangles. I hope Phillipe will have the
time this year to add the save/load feature for the mesh.
Regards..
--
Jaime
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Jaime Vives Piqueres wrote:
>
> By "not much control" you mean really "no control at all", isn't? I
> think this is a "feature", the main feature for a sky model, IMHO: I
> don't have to think on the colors. Of course, you can always ignore
> SunColor and use whatever you want for a concrete artistic effect. I
> tried for example using a blackbody between 2000 and 6500 K, depending
> on the altitude, and it also works nicely.
You have quite a bit of control over the sky appearance with the
Current_Turbidity and Intensity_Mult parameters. But still it is
somewhat limited - there is no difference made between dust turbidity
and fog turbidity for example. I agree that it's a nice thing to have a
light setup you can use without thinking and that works reasonably well
then but for a scene that needs a lot of work otherwise you usually want
to have more control on the sky as well.
Christoph
--
POV-Ray tutorials, include files, Sim-POV,
HCR-Edit and more: http://www.tu-bs.de/~y0013390/
Last updated 25 Oct. 2003 _____./\/^>_*_<^\/\.______
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