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Just received the latest (October 2001) issue of Computer Graphics World
and on the last page (p.66 - Insight section) they show renderings of the
surface of Mars done by the Centre for Astrophysics and Supercomputing
at the University of Swinburne in Australia; "...researchers used custom
tools and the public-domain raytracer PovRay."
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Sweet! How do the renders look? I wish I could get the magazines on time...
The latest one I've gotten is for August. They take forever to bring them
here. :(
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*PUBLIC DOMAIN*?! Why...they did not read povlegal?!
--
Jonathan.
"Tim Riley" <tri### [at] its bldrdocgov> ha scritto nel messaggio
news:3BC5EB04.486C9E13@its.bldrdoc.gov...
> Just received the latest (October 2001) issue of Computer Graphics World
> and on the last page (p.66 - Insight section) they show renderings of the
> surface of Mars done by the Centre for Astrophysics and Supercomputing
> at the University of Swinburne in Australia; "...researchers used custom
> tools and the public-domain raytracer PovRay."
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in news:3bc5ef75@news.povray.org Tony[B] wrote:
> Sweet! How do the renders look?
http://astronomy.swin.edu.au/pbourke/rendering/mars32/
Ingo
--
Photography: http://members.home.nl/ingoogni/
Pov-Ray : http://members.home.nl/seed7/
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They look great. But I think they should have credited the POV Team instead
of defining POV-Ray a *Publi-Domain* raytracer...
--
Jonathan.
"ingo" <ing### [at] homenl> ha scritto nel messaggio
news:Xns### [at] povrayorg...
> in news:3bc5ef75@news.povray.org Tony[B] wrote:
>
> > Sweet! How do the renders look?
>
> http://astronomy.swin.edu.au/pbourke/rendering/mars32/
>
> Ingo
>
> --
> Photography: http://members.home.nl/ingoogni/
> Pov-Ray : http://members.home.nl/seed7/
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Ah, commercial renders vs. POV-Ray... Oh my! *drool*
"The amount of raw polygonal information (130 million triangular
polygons) precluded the use of commercial rendering packages and while
there are some specialist methods for rendering such datasets they
don't provide the desired rendering quality (eg: shadows). The
rendering was performed using a combination of locally developed
tools, a modified version of a public domain raytracer (PovRay) and
locally developed distributed rendering utilities."
That "precluded the use of commercial rendering packages" really pleases
my eye... :P
--
#macro N(D,I)#if(I<6)cylinder{M()#local D[I]=div(D[I],104);M().5,2pigment{
rgb M()}}N(D,(D[I]>99?I:I+1))#end#end#macro M()<mod(D[I],13)-6,mod(div(D[I
],13),8)-3,10>#end blob{N(array[6]{11117333955,
7382340,3358,3900569407,970,4254934330},0)}// - Warp -
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Ah, the sweet satisfaction of knowing you use THE deity of all renderers.
"ingo" <ing### [at] homenl> wrote in message
news:Xns### [at] povrayorg...
> in news:3bc5ef75@news.povray.org Tony[B] wrote:
>
> > Sweet! How do the renders look?
>
> http://astronomy.swin.edu.au/pbourke/rendering/mars32/
>
> Ingo
>
> --
> Photography: http://members.home.nl/ingoogni/
> Pov-Ray : http://members.home.nl/seed7/
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Why do the mountains on the rendered planet look like giant zits? They look
all out of scale relative to the size of the planet.
Jim
"ingo" <ing### [at] homenl> wrote in message
news:Xns### [at] povrayorg...
> in news:3bc5ef75@news.povray.org Tony[B] wrote:
>
> > Sweet! How do the renders look?
>
> http://astronomy.swin.edu.au/pbourke/rendering/mars32/
>
> Ingo
>
> --
> Photography: http://members.home.nl/ingoogni/
> Pov-Ray : http://members.home.nl/seed7/
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Jim Kress wrote:
> Why do the mountains on the rendered planet look like giant zits?
> They look all out of scale relative to the size of the planet.
That's 'cuz they used 25x vertical exaggeration for the long shots
and 5x for the closeups. Earth would look funky if you did that,
too.
BTW, I myself thought of making a 3D model of Mars when I first
saw the MOLA images a few months ago, but encountered a problem
when I realised that POV doesn't do spherical heightfields.
Doh!
Though I could try bump map, see how that works...
--
Tim Cook
http://empyrean.scifi-fantasy.com
-----BEGIN GEEK CODE BLOCK-----
Version: 3.12
GFA dpu- s: a?-- C++(++++) U P? L E--- W++(+++)>$
N++ o? K- w(+) O? M-(--) V? PS+(+++) PE(--) Y(--)
PGP-(--) t* 5++>+++++ X+ R* tv+ b++(+++) DI
D++(---) G(++) e*>++ h+ !r--- !y--
------END GEEK CODE BLOCK------
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"JRG" <jrg### [at] hotmailcom> wrote in message news:3bc601a2$1@news.povray.org...
> *PUBLIC DOMAIN*?! Why...they did not read povlegal?!
Close enough for government work....
It's a sound bite - an accurate description of povlegal would just confuse
people, and for most users the difference is non-existant.
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If you would resize the earth to the size of a snooker ball, its surface
would be flatter than the smoothest snooker ball you could ever find.
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"stefkeB" <ste### [at] hotmailcom> wrote in message
news:3bc6bea8$1@news.povray.org...
> If you would resize the earth to the size of a snooker ball, its surface
> would be flatter than the smoothest snooker ball you could ever find.
Sure, but try and tell my legs that if riding a bike or walking on hills and
mountains.
Include clouds and it wouldn't be as smooth. Oh, and considering this
started about Mars, it has much more elevation change, especially for its
size. Of course you knew that.
Bob H.
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Right.
Anyway, interesting site and nice to know POV-Ray was used...
"Bob H." <omn### [at] msncom> wrote in message
news:3bc6c950$1@news.povray.org...
> "stefkeB" <ste### [at] hotmailcom> wrote in message
> news:3bc6bea8$1@news.povray.org...
> > If you would resize the earth to the size of a snooker ball, its surface
> > would be flatter than the smoothest snooker ball you could ever find.
>
> Sure, but try and tell my legs that if riding a bike or walking on hills
and
> mountains.
> Include clouds and it wouldn't be as smooth. Oh, and considering this
> started about Mars, it has much more elevation change, especially for its
> size. Of course you knew that.
>
> Bob H.
>
>
>
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So, since POV-Ray *doesn't* support spherical height fields (any why not?),
how *did* they do these images? isosurfaces?
- Slime
[ http://www.slimeland.com/ ]
[ http://www.slimeland.com/images/ ]
"stefkeB" <ste### [at] hotmailcom> wrote in message
news:3bc6d0ae@news.povray.org...
> Right.
>
> Anyway, interesting site and nice to know POV-Ray was used...
>
> "Bob H." <omn### [at] msncom> wrote in message
> news:3bc6c950$1@news.povray.org...
> > "stefkeB" <ste### [at] hotmailcom> wrote in message
> > news:3bc6bea8$1@news.povray.org...
> > > If you would resize the earth to the size of a snooker ball, its
surface
> > > would be flatter than the smoothest snooker ball you could ever find.
> >
> > Sure, but try and tell my legs that if riding a bike or walking on hills
> and
> > mountains.
> > Include clouds and it wouldn't be as smooth. Oh, and considering this
> > started about Mars, it has much more elevation change, especially for
its
> > size. Of course you knew that.
> >
> > Bob H.
> >
> >
> >
>
>
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Slime <noo### [at] hotmailcom> wrote:
: So, since POV-Ray *doesn't* support spherical height fields (any why not?),
: how *did* they do these images? isosurfaces?
What's wrong in using a mesh? It doesn't take too much memory and is
awesomely fast to render.
--
#macro N(D,I)#if(I<6)cylinder{M()#local D[I]=div(D[I],104);M().5,2pigment{
rgb M()}}N(D,(D[I]>99?I:I+1))#end#end#macro M()<mod(D[I],13)-6,mod(div(D[I
],13),8)-3,10>#end blob{N(array[6]{11117333955,
7382340,3358,3900569407,970,4254934330},0)}// - Warp -
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> Close enough for government work....
>
> It's a sound bite - an accurate description of povlegal would just confuse
> people, and for most users the difference is non-existant.
still, it's not public domain. Why didn't they just call it freeware?
cu!
--
ZK AKA SaD
http://www.povplace.be.tf
"Don't torture yourself Gomez, that's my job."
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Write 'em a letter or something and ask them to correct it.
- Slime
[ http://www.slimeland.com/ ]
[ http://www.slimeland.com/images/ ]
"Zeger Knaepen" <zeg### [at] studentkuleuvenacbe> wrote in message
news:3bc723b3@news.povray.org...
> > Close enough for government work....
> >
> > It's a sound bite - an accurate description of povlegal would just
confuse
> > people, and for most users the difference is non-existant.
> still, it's not public domain. Why didn't they just call it freeware?
>
> cu!
> --
> ZK AKA SaD
> http://www.povplace.be.tf
> "Don't torture yourself Gomez, that's my job."
>
>
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i'd like to see the images and know what modifications they made to pov.
Warp wrote:
>
> Ah, commercial renders vs. POV-Ray... Oh my! *drool*
>
> "The amount of raw polygonal information (130 million triangular
> polygons) precluded the use of commercial rendering packages and while
> there are some specialist methods for rendering such datasets they
> don't provide the desired rendering quality (eg: shadows). The
> rendering was performed using a combination of locally developed
> tools, a modified version of a public domain raytracer (PovRay) and
> locally developed distributed rendering utilities."
>
> That "precluded the use of commercial rendering packages" really pleases
> my eye... :P
>
> --
> #macro N(D,I)#if(I<6)cylinder{M()#local D[I]=div(D[I],104);M().5,2pigment{
> rgb M()}}N(D,(D[I]>99?I:I+1))#end#end#macro M()<mod(D[I],13)-6,mod(div(D[I
> ],13),8)-3,10>#end blob{N(array[6]{11117333955,
> 7382340,3358,3900569407,970,4254934330},0)}// - Warp -
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ingo wrote:
>
> in news:3bc5ef75@news.povray.org Tony[B] wrote:
>
> > Sweet! How do the renders look?
>
> http://astronomy.swin.edu.au/pbourke/rendering/mars32/
>
for details on how he used PovRay to render the planet Mars can be found
at:-
http://astronomy.swin.edu.au/pbourke/povray/marsplanet/
--
,-._|\ Alex McMurray
/ Oz \ ale### [at] melbpcorgau Melbourne PC User Group.
\_,--.x/ Melton. Vic. 3337 Australia
v
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Alex McMurray <ale### [at] melbpcorgau> wrote:
: for details on how he used PovRay to render the planet Mars can be found
: at:-
: http://astronomy.swin.edu.au/pbourke/povray/marsplanet/
They could have probably reduced parse time and memory usage by a huge
amount, and probably also render time a bit, by using a spherical texture
map on the whole mesh instead of applying separate textures to each
individual triangle... The resulting color transitions would also have
been smoother (although at that mesh resolution it doesn't really matter,
but if they ever plan to render a huge version of the images...).
--
#macro N(D,I)#if(I<6)cylinder{M()#local D[I]=div(D[I],104);M().5,2pigment{
rgb M()}}N(D,(D[I]>99?I:I+1))#end#end#macro M()<mod(D[I],13)-6,mod(div(D[I
],13),8)-3,10>#end blob{N(array[6]{11117333955,
7382340,3358,3900569407,970,4254934330},0)}// - Warp -
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