Author Topic: Earth project  (Read 16015 times)

Offline Oshyan

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Re: Earth project
« Reply #15 on: March 27, 2007, 03:54:41 AM »
The water is already masked in this case, although the mask resolution is lower than for the land and may also have *slightly* different contintent shapes as a result. I may have to redo the specular mask.

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Offline Arandil

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Re: Earth project
« Reply #16 on: March 27, 2007, 04:25:35 AM »
Orbiter has 32k x 16k textures and specular maps (and nighttime city maps) for Earth.  The images are saved in DDS format apparently, but named as .tex.  I think you might be able to extract them somehow, but off the top of my head I can't recall...

I know that Martin (the program author) jazzed up the night light map a bit with some noise because he thought the one he got from NASA/Blue Marble was too granular.

Offline Oshyan

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Re: Earth project
« Reply #17 on: March 27, 2007, 04:42:41 AM »
Interesting to hear that Arandil. I'll take a look...

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Offline king_tiger_666

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Re: Earth project
« Reply #18 on: March 27, 2007, 05:19:57 AM »
maybe something like this too?
http://celestiamotherlode.net/catalog/earth.php

though to get all 8 levels of one set is over 2gb :( vt/png format though from my experience with using some of these textured they looked pretty good...

oshyan maybe google earth is a good source they have this for mars 3gb tiff at 92,000 x 46,000 pixels
http://bbs.keyhole.com/ubb/showflat.php/Cat/0/Number/753304/an/0/page/0

now we just need to find a source for earth and see if you can download the raw tiff from somewhere hmm... that's really high quality 4.2gigapixel?
« Last Edit: March 27, 2007, 05:29:09 AM by king_tiger_666 »
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Offline Oshyan

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Re: Earth project
« Reply #19 on: March 27, 2007, 05:56:37 AM »
Yes, I'm familiar with many of these sources actually. The problem is TG2 can't load them, at least not on my machine. It choked on a 21600x10800 .jpg, so I'm not going to be trying anything above that. Perhaps if TG2 gains support for dynamic reading and mip-mapping of tiled data sets this would be practical, but for now without a 64 bit version I think not, unfortunately. The point of the project is to do the best we can *at present*, and a big part of that is finding the highest resolution that will render consistently.

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Offline 3DGuy

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Re: Earth project
« Reply #20 on: March 27, 2007, 06:08:18 PM »
I guess I used the same maps in my evening in europe picture. I also had to scale down to the same res you mentioned because TG2 would crash.

Offline old_blaggard

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Re: Earth project
« Reply #21 on: March 27, 2007, 06:16:51 PM »
It's interesting because my project uses two 21600*10800 images on a rather pathetic laptop without a problem.
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Offline Oshyan

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Re: Earth project
« Reply #22 on: March 27, 2007, 06:47:20 PM »
Yeah, except you're on a Mac. Could be that the Mac version handles this stuff better. I'd hate that to be the case, but wouldn't be surprised. ;)

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Offline old_blaggard

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Re: Earth project
« Reply #23 on: March 27, 2007, 06:49:45 PM »
Heheh... we win again! :D
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Offline 3DGuy

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Re: Earth project
« Reply #24 on: March 27, 2007, 06:58:29 PM »
My 3DS Max doesn't have a problem with those big maps, so is it Windows, or is it TG2?
For those interested, here's the image I made in 3DS.

btw Oshyan, do you have a proper bumpmap for the earth, because I can provide one if you need it.

Offline Oshyan

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Re: Earth project
« Reply #25 on: March 27, 2007, 07:07:59 PM »
It would probably be a TG2 problem on Windows not Windows itself. I can load such high resolution maps in other apps as well.

I do have a bump map for Earth but would welcome other sources as well. I honestly wouldn't be bothering with this project since I know others have already done much of this, except - if I may say so - I found my result to be a bit better than any I'd seen previously. ;)

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Offline RealUser

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Re: Earth project
« Reply #26 on: March 27, 2007, 09:04:08 PM »
Hey, pretty nice image of Mother Earth and Mr.Moon!

My 3DS Max doesn't have a problem with those big maps, so is it Windows, or is it TG2?
For those interested, here's the image I made in 3DS.

btw Oshyan, do you have a proper bumpmap for the earth, because I can provide one if you need it.
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Offline RealUser

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Re: Earth project
« Reply #27 on: September 14, 2007, 10:49:10 AM »
Hey Oshyan, did you work on the project lately?
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Offline Mahnmut

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Re: Earth project
« Reply #28 on: September 14, 2007, 01:17:04 PM »
concerning the water surface:
I donīt know if itīs an unnecessarily complicated method, but I used a sphere of the planets average diameter "inside" the planet for my green mars. -You know, the one with the terminator problem ;)
That way you can increase or decrease waterlevel by adjusting the waterspheres diameter.
Maybe thats interesting for someone who wants to see what earth would look like after the polar caps melted. ;)
It works quite nicely with the 16k bumpmap of Mars from the celestia motherlode.
Regards,
Jan
« Last Edit: September 14, 2007, 02:16:37 PM by Mahnmut »

Offline Oshyan

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Re: Earth project
« Reply #29 on: September 19, 2007, 04:57:09 PM »
Hey Oshyan, did you work on the project lately?
It seemed like TG2 on Windows was more fundamentally limited in regards to use of high resolution textures than it should be, so I set it aside for a while. I'll definitely come back to it soon though, especially as the new renderer optimizations come into play. :)

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