| HarbingerDawn | Date: Monday, 25.06.2012, 05:03 | Message # 1 |
 Cosmic Curator
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United States
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| Using SpaceEngine's wonderful procedural generation capabilities, I have come up with a script that uses the Mars bump map to create a surface like Mars may have had in the ancient past (~3.8 billion years ago). I have also changed the albedo, color, and atmosphere. I have left orbit and rotation unchanged. The sea level is 3km below the datum.
Screenshots:
View from Phobos, showing Valles Marineris, Tharsis Montes
Utopia/Elysium/Amazonis
Noachis/Hellas/Isidis
Marineris/Chryse/Argyre
To use this mod, go into your SolarSys.sc file in the data/catalogs/planets folder, find the entry for Mars, and comment it out by placing /* before it begins and */ after it ends like so:
Code /* Planet "Mars"
{
ParentBody "Sol"
Class "Desert"
Mass 0.10745
Radius 3396
//Oblateness 0.0069
RotationPeriod 24.622962
RotationOffset 136.005
Obliquity 26.72
EqAscendNode 82.91
Color ( 1.000 0.750 0.700 )
Albedo 0.15
Surface
{
//DiffMap "Mars/Surface-Voyager"
DiffMap "Mars/Surface"
DiffTileSize 514
DiffTileBorder 1
BumpMap "Mars/Bump"
BumpTileSize 514
BumpTileBorder 1
BumpHeight 29.457 // 21249 + 8208
BumpOffset 8.208
Exposure 3.5
}
Atmosphere
{
Height 100 // km
Pressure 0.006 // atm
Density 0.01 // kg/m^3
Model "Mars"
Bright 4.0
Opacity 1.0
SkyLight 2.0
EclipseBright 10.0
EclipseColor ( 0.500 0.700 0.800 )
}
Orbit
{
Period 1.8809
SemiMajorAxis 1.5237
Eccentricity 0.0934
Inclination 1.8506
AscendingNode 49.479
LongOfPericen 336.041
MeanLongitude 355.453
}
} */
Then, paste the following code into your SolarSys.sc file (or any planet catalog file):
Code Planet "Mars"
{
ParentBody "Sol"
Class "Terra"
Mass 0.10745
Radius 3396
//Oblateness 0.0069
RotationPeriod 24.622962
RotationOffset 136.005
Obliquity 26.72
EqAscendNode 82.91
Color ( 1.000 0.850 1.000)
Albedo 0.2
Ocean {
Height 5.2
Color (1.000, 1.000, 1.000, 1.000)
}
Surface
{
Randomize (0.823, 0.764, 0.908)
//DiffMap "Mars/Surface-nonshaded"
//DiffMap "Mars/Surface"
//DiffTileSize 514
//DiffTileBorder 1
BumpMap "Mars/Bump"
BumpTileSize 514
BumpTileBorder 1
BumpHeight 29.457 // 21249 + 8208
BumpOffset 8.208
Exposure 3
DiffMapAlpha "Water" // Mode of specular effect (flecks of sunlight)
SpecularBright 20.0 // Brightness of specular spot
SpecularPower 150.0 // Size of specular spot
colorSea (0.020, 0.050, 0.100, 1.000)
colorShelf (0.075, 0.200, 0.230, 1.000)
colorBeach (0.400, 0.280, 0.200, 0.000)
colorDesert (0.250, 0.180, 0.150, 0.000)
colorLowland (0.350, 0.200, 0.150, 0.000)
colorUpland (0.160, 0.150, 0.130, 0.000)
colorRock (0.150, 0.130, 0.120, 0.000)
colorSnow (1.000, 1.000, 1.000, 0.016)
colorLowPlants (0.350, 0.200, 0.150, 0.000)
colorUpPlants (0.220, 0.150, 0.135, 0.000)
seaLevel 0.3
snowLevel 0.0
cycloneMagn 0.3
cycloneFreq 0.0001
cycloneDensity 0.0001
tropicLatitude 0.30
icecapLatitude 0.7257141
climateTropic 0.6
climateEquator 0.7
Life false
}
Atmosphere
{
Height 140 // km
Pressure 1.0 // atm
Density 1.9 // kg/m^3
Model "Earth"
Bright 4.0
Opacity 0.4
SkyLight 2.0
EclipseBright 250.0 // 10.0
EclipseColor ( 1.000 0.600 0.200 )
Greenhouse 55 // degrees K
}
Clouds {
Height 6
DayAmbient 2
Lommel 0.2
Exposure 2
Color (1.000, 1.000, 1.000, 1.000)
mainFreq 0.7068
mainOctaves 10
Coverage 0.1
twistZones 4.519065
twistMagn 2.279877
}
Orbit
{
Period 1.8809
SemiMajorAxis 1.5237
Eccentricity 0.0934
Inclination 1.8506
AscendingNode 49.479
LongOfPericen 336.041
MeanLongitude 355.453
}
}
I recommend that you turn 3D water off when using this mod, as it does not give the correct sea level and it looks glitchy. I also highly recommend that you use this in conjunction with the Mars Bump Map from the official addons; this mod will probably not work properly without it.
Feel free to change any of the parameters you wish if you're not satisfied, I'm sure it could look better if someone good at manipulating the variables had a try with it. You can also speed up the rotation and delete Phobos and Deimos if you want an even more authentic "Ancient Mars" feel.
Enjoy 
UPDATE: I have edited the atmosphere to make the surface easier to see, so ignore the atmosphere in the screenshots.
All forum users, please read this!
My SE mods and addons
Phenom II X6 1090T 3.2 GHz, 16 GB DDR3 RAM, GTX 970 3584 MB VRAM
Edited by HarbingerDawn - Monday, 25.06.2012, 18:37 |
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| DoctorOfSpace | Date: Monday, 25.06.2012, 05:42 | Message # 2 |
 Galaxy Architect
Group: Global Moderators
Pirate
Messages: 3600
Status: Offline
| I like how you got the color really good and the poles look great. I combined yours with my Mars tweaks and ended up with this.
Only used my cloud edits, color tweaks, atmosphere height, and sea level rest is yours
Intel Core i7-5820K 4.2GHz 6-Core Processor
G.Skill Ripjaws V Series 32GB (4 x 8GB) DDR4-2400 Memory
EVGA GTX 980 Ti SC 6GB
Edited by DoctorOfSpace - Monday, 25.06.2012, 05:43 |
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| HarbingerDawn | Date: Monday, 25.06.2012, 06:10 | Message # 3 |
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Cosmic Curator
Group: Administrators
United States
Messages: 8717
Status: Offline
| I really like the way yours looks I did mine the way I did because I was going for realism, so I intentionally let aesthetics suffer. Nice job on those tweaks. Can you post your cloud code? I'd like to experiment with it, it looks really good for procedural clouds.
All forum users, please read this!
My SE mods and addons
Phenom II X6 1090T 3.2 GHz, 16 GB DDR3 RAM, GTX 970 3584 MB VRAM
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| DoctorOfSpace | Date: Monday, 25.06.2012, 06:15 | Message # 4 |
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Galaxy Architect
Group: Global Moderators
Pirate
Messages: 3600
Status: Offline
| I posted about it a while back, link here
Quote A method I use doesn't look good from ground level but it does look good from space.
Here are the settings I used for the screen
Clouds
{
BumpMap "Earth/Clouds"
BumpTileSize 514
BumpTileBorder 1
BumpHeight 1.5
BumpOffset 0.0
Exposure 3.0
DayAmbient 3.0
Lommel 0.2
Height 9.0 //3.5
Velocity 42.0 // km/h
Coverage 0.42
}
It doesn't look good from the ground for obvious reasons, like the fact I'm using a texture as a bump.
http://en.spaceengine.org/forum/17-581-4799-16-1336488263
But here is what I was using in the above screen
Quote Clouds {
BumpMap "Earth/Clouds"
BumpTileSize 514
BumpTileBorder 1
BumpHeight 6.0
BumpOffset 0.0
Height 8
DayAmbient 2
Lommel 0.2
Exposure 2
Color (1.000, 1.000, 1.000, 1.000)
mainFreq 0.7068
mainOctaves 10
Velosity 40 // km/h
Coverage 0.33
twistZones 4.519065
twistMagn 2.279877
}
Intel Core i7-5820K 4.2GHz 6-Core Processor
G.Skill Ripjaws V Series 32GB (4 x 8GB) DDR4-2400 Memory
EVGA GTX 980 Ti SC 6GB
Edited by DoctorOfSpace - Monday, 25.06.2012, 06:16 |
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| HarbingerDawn | Date: Monday, 25.06.2012, 06:41 | Message # 5 |
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Cosmic Curator
Group: Administrators
United States
Messages: 8717
Status: Offline
| Oh wow, I was just looking at that thread like an hour ago, haha Thanks
All forum users, please read this!
My SE mods and addons
Phenom II X6 1090T 3.2 GHz, 16 GB DDR3 RAM, GTX 970 3584 MB VRAM
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| aryoseno11 | Date: Sunday, 01.07.2012, 05:19 | Message # 6 |
 Observer
Group: Users
Indonesia
Messages: 10
Status: Offline
| hahaha many thanks 
PC: Intel Core i7, 3 GB RAM, Geforce GT 430 2 GB DDR3, 500 GB free
disk space
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