 |
|
|
|
|
|
| |
| |
|
|
|
|
| |
| |
|
|
I made throne from isowood. It was possible when I added some extensions to
Christoph Hormann's IsoWood Include File. If there is any person interested with
turning-lathe addition I must consult original author first. Also I must noticed
that there are some random artefacts on pictures contained isowoodsurfaces (for
example black line on the right foot in front view). They appear randomly and
sometimes eat even half of object. I don't know what is the reason - iso-engine,
orthographic camera, hot air or included files.
BTW: scene contains 70 isos, arelight 2x2, took 23 min to render and was
designed with my modeling enxiroment include file
--
#macro Sig(A,B,X)_(A,B)_(B,X)_(X,A)#end#macro _(A,B)cylinder{<A.x,A.y,3>,<B.u,
B.v,3>.1,9}#end global_settings{max_trace_level 9}light_source{0 1}camera{up y
*4right-3*x}blob{_(<3,1>,<1,-5>)_(<2,-2>,<4,-2>)Sig(x,<-1,1.5>,<1,3>)_(z-1,z-4
)pigment{rgb 1}}box{-3 3pigment{rgb 0}finish{reflection 1}hollow} // POV-Ray31
Post a reply to this message
Attachments:
Download 'throne.jpg' (66 KB)
Preview of image 'throne.jpg'
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Wlodzimierz ABX Skiba wrote:
>
> I made throne from isowood. It was possible when I added some extensions to
> Christoph Hormann's IsoWood Include File. If there is any person interested with
> turning-lathe addition I must consult original author first. Also I must noticed
> that there are some random artefacts on pictures contained isowoodsurfaces (for
> example black line on the right foot in front view). They appear randomly and
> sometimes eat even half of object. I don't know what is the reason - iso-engine,
> orthographic camera, hot air or included files.
Artefacts in isosurfaces are often a sign of insufficient max_gradient.
In the IsoWood include you can change this with 'CH_Wood_ISOmaxgrad'.
It looks good, but the surfaces seem perfectly smooth while the include
file was made for structured surfaces. As it is now, using isosurfaces is
fairly unnecessary.
And of course i would like to see that extension you made for the include
file.
Christoph
--
Christoph Hormann <chr### [at] gmx de>
IsoWood include, radiosity tutorial, TransSkin and other
things on: http://www.schunter.etc.tu-bs.de/~chris/
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Christoph Hormann wrote in message <3B5C442C.D2652DDE@gmx.de>...
> Artefacts in isosurfaces are often a sign of insufficient max_gradient.
> In the IsoWood include you can change this with 'CH_Wood_ISOmaxgrad'.
even with CH_Wood_ISOeval=yes ?
> It looks good, but the surfaces seem perfectly smooth while the include
> file was made for structured surfaces.
I have tried this throne with no bumps and it looks diffent. I prefer isowood
version :-)
> As it is now, using isosurfaces is
> fairly unnecessary.
I noticed that it is easier for me to model such object with isowoods than with
promitives.
> And of course i would like to see that extension you made for the include
> file.
Of course. After moment in your box :-)
--
#macro Sig(A,B,X)_(A,B)_(B,X)_(X,A)#end#macro _(A,B)cylinder{<A.x,A.y,3>,<B.u,
B.v,3>.1,9}#end global_settings{max_trace_level 9}light_source{0 1}camera{up y
*4right-3*x}blob{_(<3,1>,<1,-5>)_(<2,-2>,<4,-2>)Sig(x,<-1,1.5>,<1,3>)_(z-1,z-4
)pigment{rgb 1}}box{-3 3pigment{rgb 0}finish{reflection 1}hollow} // POV-Ray31
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Wlodzimierz ABX Skiba wrote:
>
> even with CH_Wood_ISOeval=yes ?
No, but what maximum gradient does it print out?
>
> I have tried this throne with no bumps and it looks diffent. I prefer isowood
> version :-)
>
Have you tried increasing the strength parameter, just to see how a
'rougher' version looks like?
> [...]
>
> > And of course i would like to see that extension you made for the include
> > file.
>
> Of course. After moment in your box :-)
>
Got it, thanks, the variable radius idea is very useful, will probably add
that to the next version, but don't expect it very soon.
Christoph
--
Christoph Hormann <chr### [at] gmxde>
IsoWood include, radiosity tutorial, TransSkin and other
things on: http://www.schunter.etc.tu-bs.de/~chris/
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Christoph Hormann wrote in message <3B5C5060.4696490A@gmx.de>...
> Wlodzimierz ABX Skiba wrote:
> > even with CH_Wood_ISOeval=yes ?
>
> No, but what maximum gradient does it print out?
In range from 0.8 to 76.
The problems with artefacts is strange for me becouse they appear randomly -
I've rendered scene yesterday evening at home and today morning at work. At home
were artefacts but at work no. No modifications in source file were done.
> > I have tried this throne with no bumps and it looks diffent. I prefer
isowood
> > version :-)
>
> Have you tried increasing the strength parameter, just to see how a
> 'rougher' version looks like?
Yes. Current value (0.01) was choosed experimentaly. Larger value could be
comfortless for sitting :-)
> Got it, thanks, the variable radius idea is very useful, will probably add
> that to the next version, but don't expect it very soon.
Don't forget idea sended by me to p.b.i as photo some time ago.
--
#macro Sig(A,B,X)_(A,B)_(B,X)_(X,A)#end#macro _(A,B)cylinder{<A.x,A.y,3>,<B.u,
B.v,3>.1,9}#end global_settings{max_trace_level 9}light_source{0 1}camera{up y
*4right-3*x}blob{_(<3,1>,<1,-5>)_(<2,-2>,<4,-2>)Sig(x,<-1,1.5>,<1,3>)_(z-1,z-4
)pigment{rgb 1}}box{-3 3pigment{rgb 0}finish{reflection 1}hollow} // POV-Ray31
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Wlodzimierz ABX Skiba wrote:
>
> In range from 0.8 to 76.
> The problems with artefacts is strange for me becouse they appear randomly -
> I've rendered scene yesterday evening at home and today morning at work. At home
> were artefacts but at work no. No modifications in source file were done.
>
Hmm, 76 seems fairly high for such shapes, are you sure all the functions
used are smooth? You can also try to play with the eval parameters.
Randomly occuring artefacts are of course quite strange, but since the
current isosurface code is known to be buggy, anything is possible...
Raising the accuracy value could also help.
>
> Yes. Current value (0.01) was choosed experimentaly. Larger value could be
> comfortless for sitting :-)
Hey, we are talking about art, comfort is negligible...
>
> Don't forget idea sended by me to p.b.i as photo some time ago.
>
Don't remember and could not find a photo from you either, could you point
me to it?
Christoph
--
Christoph Hormann <chr### [at] gmxde>
IsoWood include, radiosity tutorial, TransSkin and other
things on: http://www.schunter.etc.tu-bs.de/~chris/
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Very cool throne! It _almost_ looks like it _might_ be comfortable,
too...
--
David Fontaine <dav### [at] faricynet> ICQ 55354965
My raytracing gallery: http://davidf.faricy.net/
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Christoph Hormann wrote in message <3B5C5FFD.2C672F99@gmx.de>...
> Wlodzimierz ABX Skiba wrote:
>> In range from 0.8 to 76.
>
> Hmm, 76 seems fairly high for such shapes, are you sure all the functions
> used are smooth?
There is if() in arm function but it should join smothly - perhaps some accuracy
of calculation creates "jump" on surface.
> You can also try to play with the eval parameters.
I use eval on every trace.
> Randomly occuring artefacts are of course quite strange, but since the
> current isosurface code is known to be buggy, anything is possible...
> Raising the accuracy value could also help.
I'll try
> > Yes. Current value (0.01) was choosed experimentaly. Larger value could be
> > comfortless for sitting :-)
>
> Hey, we are talking about art, comfort is negligible...
But I can't say this to my modeled king ;-)
> > Don't forget idea sended by me to p.b.i as photo some time ago.
>
> Don't remember and could not find a photo from you either, could you point
> me to it?
Subject: proposition for isowood 0.3 :-) (85 kbu)
Date: Fri, 1 Dec 2000 20:32:11 +0100
Message-ID: <3a28e9f2@news.povray.org>
Xref: news.povray.org povray.binaries.images:43977
--
#macro Sig(A,B,X)_(A,B)_(B,X)_(X,A)#end#macro _(A,B)cylinder{<A.x,A.y,3>,<B.u,
B.v,3>.1,9}#end global_settings{max_trace_level 9}light_source{0 1}camera{up y
*4right-3*x}blob{_(<3,1>,<1,-5>)_(<2,-2>,<4,-2>)Sig(x,<-1,1.5>,<1,3>)_(z-1,z-4
)pigment{rgb 1}}box{-3 3pigment{rgb 0}finish{reflection 1}hollow} // POV-Ray31
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
David Fontaine wrote in message <3B5C847C.4AB157EF@faricy.net>...
> Very cool throne!
Thanks
> It _almost_ looks like it _might_ be comfortable, too...
It can't be comfortable becouse of rounded arm - there is no flat place for
elbow.
"Fortunately" my king is armless
--
#macro Sig(A,B,X)_(A,B)_(B,X)_(X,A)#end#macro _(A,B)cylinder{<A.x,A.y,3>,<B.u,
B.v,3>.1,9}#end global_settings{max_trace_level 9}light_source{0 1}camera{up y
*4right-3*x}blob{_(<3,1>,<1,-5>)_(<2,-2>,<4,-2>)Sig(x,<-1,1.5>,<1,3>)_(z-1,z-4
)pigment{rgb 1}}box{-3 3pigment{rgb 0}finish{reflection 1}hollow} // POV-Ray31
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Wlodzimierz ABX Skiba wrote:
>
>
> > You can also try to play with the eval parameters.
>
> I use eval on every trace.
>
I meant the optional 3d vector following eval. See the megapov docs for
explanation.
> [...]
> > Don't remember and could not find a photo from you either, could you point
> > me to it?
>
> Subject: proposition for isowood 0.3 :-) (85 kbu)
> Date: Fri, 1 Dec 2000 20:32:11 +0100
> Message-ID: <3a28e9f2@news.povray.org>
> Xref: news.povray.org povray.binaries.images:43977
>
Thanks, found it. Will try on that too when i have time...
Christoph
--
Christoph Hormann <chr### [at] gmxde>
IsoWood include, radiosity tutorial, TransSkin and other
things on: http://www.schunter.etc.tu-bs.de/~chris/
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
|
|
