New ETOPO2 Earth Texture.

alan_federman · Post #1by **alan_federman** » 13.01.2003, 22:38

http://explorer.arc.nasa.gov/Celestia/big3.jpg

Is my first attempt (well it took 3 tries) to get data into Celestia. This is 41meg (8k by 4k) cut and past of etop2 data tiles downloaded off the internet. This is a false color representation of the topgraphy/bathymetry of the earth in 3km resolution.

If you look close you can see where the paste line are. It might be cool to make this the "night" texture, turn up ambient light, and simulate earth with the oceans boiled off. :twisted:

I wonder if something similar might be done with Venus?

billybob884 · Post #2by **billybob884** » 14.01.2003, 01:29

very nice, although 43 mb is a little big, :mrgreen:

alegator · Post #3by **alegator** » 14.01.2003, 06:51

What would be the line to add to the solarsys.ssc file to include this jpg? Thanks.

Post #4by **selden** » 14.01.2003, 18:14

change

Code: Select all

Texture "earth.png"

to

Code: Select all

Texture "earth.jpg"

copy the jpeg to the textures/hires directory and rename it to be earth.jpg

Celestia 1.2.5 doesn't come with any files named "earth.jpg", so that's the one it'll use.

alegator · Post #5by **alegator** » 14.01.2003, 21:18

Thanks, now the question is, will that jpg work fine with the bumpmap and cloudmap I'm using?

Post #6by **selden** » 14.01.2003, 21:30

Only you can decide if they "work fine" together. (i.e. if they look good.)

Celestia will happily apply whatever surface, bump, reflection and cloud maps you provide it, so long as they are the right sizes (powers of two) and formats (jpg,png,dds).

Since the texture is a jpeg image, it doesn't have an alpha channel, so it doesn't include specular reflections, either. That'd be an additional texture map you could specify.

alegator · Post #7by **alegator** » 15.01.2003, 00:56

Selden, I have an ATI card, and as far as I know, specular reflections in Celestia are not supported with ATI cards...is this so?

Post #8by **selden** » 15.01.2003, 18:47

alegator,

Yes, that's so. My understanding is that Chris hopes to remove that limitation in 1.2.6 for many ATI cards when he changes the code to use the shading routines availble in OpenGL v1.4.

alegator · Post #9by **alegator** » 15.01.2003, 20:52

Is there any estimate as to when will 1.2.6 be released?

Post #10by **chris** » 15.01.2003, 20:59

alegator wrote:Is there any estimate as to when will 1.2.6 be released?

Currently, I'm shooting for mid-February. 1.2.6 won't have as much new stuff as 1.2.5.

--Chris

Guest · Post #11by **Guest** » 16.01.2003, 00:19

but will it have support for ATI cards?