First of many planets

Tips for creating and manipulating planet textures for Celestia.
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Cham M
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Post #21by Cham » 14.10.2005, 22:18

Here's another one I made for my addon. The texture is 2k (2048 X 1024) with bumpmap and specular map. The orginal Photoshop file contains three layers in 4k format (4096 X 2048) : the cracked texture as a background, the poles from LunarCell, and a 50% transparent texture to add some color and contrast variations.


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"Well! I've often seen a cat without a grin", thought Alice; "but a grin without a cat! It's the most curious thing I ever saw in all my life!"

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Cham M
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Post #22by Cham » 15.10.2005, 03:28

And now an icy world from the outer parts of the addon :

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Last edited by Cham on 15.10.2005, 15:55, edited 1 time in total.
"Well! I've often seen a cat without a grin", thought Alice; "but a grin without a cat! It's the most curious thing I ever saw in all my life!"

Dollan
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Post #23by Dollan » 15.10.2005, 03:50

B_McKinley wrote:For clouds try this, which you may already know about:

2922 different cloud maps a year

Yeah, I make certain to keep that bookmark. I try to save an image once a day, but I haven't been using them since I switched to Photoshop CS2. I'll have to reinstall PSP in order to be able to properly prepare the clouds for Celestia.

Might have to remove some coastline, but still handy.

Did the hacked version of LunarCell do anything special?


no, it just eliminated the need to buy the thing. I haven't had a copy for some time, though. Heck, I don't even have the trial version anymore. Might have to find it again and see what I can do....

...John...
"To make an apple pie from scratch, you must first create the universe..."
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B_McKinley
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Post #24by B_McKinley » 15.10.2005, 06:11

I'll bite. What can you do in PSP that can't be done in Photoshop CS or CS2?

I have to ask since I'm a Photoshop CS person myself.

Dollan
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Post #25by Dollan » 15.10.2005, 10:35

Something to do with manipulating the clouds downloaded from the above link, and making them appear, well, cloud-like for Celestia. There's a thread somewhere where I asked a question about a mini tutorial for clouds in Photoshop, and Don Edwards provided an interesting reply. I'd do a search for the thread and provide the link, but it's 5am and I just got off-shift, and I'm pooped! I'll try to remember to look later on, though, when I finally regain consciousness :wink:

...John...
"To make an apple pie from scratch, you must first create the universe..."
--Carl Sagan

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Cham M
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Post #26by Cham » 16.10.2005, 04:50

Here's a couple of dead planets. I'm not sure I should include them in my Zet Reticuli addon. Should be placed around some pulsar.

Image

Image
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Cham M
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Post #27by Cham » 16.10.2005, 16:05

I wasn't satisfied with the previous cracked world, so I made another one using the same technique (three layers in Photoshoop, one for the base cracked texture, another one for the poles only using LunarCell, and a third one to add some color and textures variations. All in 4096 X 2048). The result, reduced to 2048 X 1024, is near perfection with bumpmap and specular reflexion. No pinch effect at the poles, bump map is perfect, almost no pixels visible at very close range.

Image

Image
"Well! I've often seen a cat without a grin", thought Alice; "but a grin without a cat! It's the most curious thing I ever saw in all my life!"

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Cham M
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Post #28by Cham » 16.10.2005, 23:47

It's really funny what you can do with some textures variations, bumps and specular reflexion. Here's the last cracked planet, with a slight color variation and a bumpmap parameter increased to 5. Look at the shadow side, the crevices are still visible :

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Image

I'll try to make another one with lava in the crevices, and red hot glowings on the night side. But this is though to do, I'm not sure how to select the crevices correctly in Photoshop.
"Well! I've often seen a cat without a grin", thought Alice; "but a grin without a cat! It's the most curious thing I ever saw in all my life!"

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Post #29by ajtribick » 17.10.2005, 00:18

Those textures are pretty cool, I especially like the ice world. I guess the cracked world is like Noctis Labyrinthus gone global.

Maybe try adding some craters or something, which would make them look more convincing... I wouldn't suspect these planets would have very active erosion processes going on. Maybe try having some craters sheared along the cracks or something to suggest some kind of surface movement or something.

Just a few suggestions... keep up the good work!

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Post #30by Michael Kilderry » 18.10.2005, 08:11

Cham wrote:I'll try to make another one with lava in the crevices, and red hot glowings on the night side. But this is though to do, I'm not sure how to select the crevices correctly in Photoshop.


I work with Paint Shop Pro, so I'm not that sure about the tools in Photoshop, but here's what I'd do.

1. Turn the texture into a negative image. This should make the crevices white.

2. Using the Highlight/Midtone/Shadow tool, I would then turn down the Shadow and Midtone, leaving Highlight how it is.

3. Lastly, I would use the Colourise tool, (this is Australian spelling, in Paint Shop they call it Colorize) and then adjust the hue to a reddish colour to get the final result for the Night Texture.

Do you need me to explain it more? I'm not sure if this is going to work really well, but it's a start.
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Dollan
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Post #31by Dollan » 18.10.2005, 14:00

Okay, finally got around to posting the primary worlds that I have orbiting Zeta-1 and 2 Reticuli. They're nothing spectacular; just a demonstration of how much I love Earth-like worlds.

The first one is Minos, orbiting Zeta-1 Reticuli. It is an ocean world, and a planet that I'm grooming to be a tropical apradse. However, there are some factual problems with that which I'll probably resolve later.

Image

The second world orbits Zeta-2 Reticuli, and is named Pretarus. It is a habitable world, but colder by far that Minos, and with land-masses that are much more mountainous.

Image

So, there you go. Nothing spectacular, and the rest of each solar system has not yet been detailed.

...John...
"To make an apple pie from scratch, you must first create the universe..."
--Carl Sagan

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Post #32by Beowulf01 » 19.10.2005, 03:15

looks real good, , how did you go about making the landmasses?

Dollan
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Post #33by Dollan » 19.10.2005, 03:23

For Pretarus? Actually, I did an RGB selection in PSP of the Earth, and copied the resulting pieces into a new map. A little extra tweaking in rearranging the land masses, and there you go. Took me about ten minutes.

...John...
"To make an apple pie from scratch, you must first create the universe..."
--Carl Sagan

Michael Kilderry
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Post #34by Michael Kilderry » 19.10.2005, 06:42

I was going to do my next planetary system around the Sirius stars, but now I feel inspired to do a Zeta Reticuli addon too! But I think we've got enough planets for those stars already. :wink:
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fsgregs
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Post #35by fsgregs » 20.10.2005, 00:28

Cham, will your solar system add-on be posted on Motherlode soon? It looks GREAT!!!!!!

Frank

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Cham M
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Post #36by Cham » 20.10.2005, 00:32

Well, not yet, it's not ready and I still have lots of work to do on it.

Be patient.
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