Andrew Boulton
The Adminator
Thanks! It's still early days, there's nothing definite yet, but yeah, it's cool!
Illustrated Guide to the Marches
- Thread starter Andrew Boulton
- Start date
jonathonbarton
SOC-12
Indeed... On the copy I have at home, I have a Star Trek Starbase orbiting Yori, with a Star Trek "Generic looking" ship in orbit next to it. I'd be *much* happier if I could get a couple 3ds files of Traveller ships to use...Originally posted by Berg:
Mr. Scarecrow,
You draw most excellent ship models. You know Celestia can use 3D models in it to show space flight....
Tom
M
Malenfant
Guest
That's an unfeasibly large ring system, especially for a habitable planet...
jonathonbarton
SOC-12
...especially considering Dueck is the innermost planet in the Yori System... Orbit-0 *certainly* isn't gonna be blue... but hey, it's fun to play!
The way I've been doing Rings (by hand) is that most rings seem to wind up in Orbit0, and orbit-1 is clear, so...on a system with a Radius of, say, 100000 km, the rings will go from 200000 to 300000... That's actually from Orbit 1 to Orbit 2, but hey, it looks allright...
I'm about 50% done with a system description -> *.ssc generator. It'll still be a lot of transcribing, but it will make it pretty darn fast to populate systems with Planets and Moons. It would *probably* be a lot faster if I were willing to just write it so that it would generate the systems using either Book 6 or one of the alternatives that are out there, but I want to have a utility that allows a user to input a *pre-existing* system easily. That way it'll be useful for putting TML Landgrab systems into Celestia.
Also, can anyone get me the Orbital Period Formula from Book 6 right quick (Mine's 20 miles away at home...)
It's something like:
P=(D (in AU) cubed / M (in solar masses) )^0.5, right?
The way I've been doing Rings (by hand) is that most rings seem to wind up in Orbit0, and orbit-1 is clear, so...on a system with a Radius of, say, 100000 km, the rings will go from 200000 to 300000... That's actually from Orbit 1 to Orbit 2, but hey, it looks allright...
I'm about 50% done with a system description -> *.ssc generator. It'll still be a lot of transcribing, but it will make it pretty darn fast to populate systems with Planets and Moons. It would *probably* be a lot faster if I were willing to just write it so that it would generate the systems using either Book 6 or one of the alternatives that are out there, but I want to have a utility that allows a user to input a *pre-existing* system easily. That way it'll be useful for putting TML Landgrab systems into Celestia.
Also, can anyone get me the Orbital Period Formula from Book 6 right quick (Mine's 20 miles away at home...)
It's something like:
P=(D (in AU) cubed / M (in solar masses) )^0.5, right?
I've made a text doc of an .ssc file...
“Name” “Star”
{
Class “Planet”
Texture “file”
Mesh “file”
Emissive true
NightTexture “file”
BumpMap “file”
BumpHeight “file”
Color [ R G B ]
SpecularColor [ R G B ]
SpecularPower 25.0
HazeColor [ R G B ]
HazeDensity 0.8
Radius 6378 in km
Oblateness 0.003
Atmosphere
{
Height 70 in km
Lower [ R G B ]
Upper [ R G B ]
Sky [ R G B ]
CloudHeight 40 in km
CloudSpeed 50 in km/h
CloudMap "file"
}
EllipticalOrbit
{
Period 0.6152
SemiMajorAxis 0.7233
Eccentricity 0.0068
Inclination 3.3947 in degrees
AscendingNode 76.681 in degrees
LongOfPericenter 131.533 in degrees
MeanAnomaly 181.979 in degrees
Epoch 2452028.18381755
}
RotationPeriod 23.9344694
Obliquity 3.3947 in degrees
LongOfRotationAxis 76.681 in degrees
RotationOffset 280.5 in degrees
PrecessionRate 48.98
Albedo 0.10
Rings
{
Inner 74658 in km
Outer 140000 in km
Texture "saturn-rings.png"
Color [R G B]
}
}
The format wrecks it here so it's available here....
SSC Model
This may help
Tom
“Name” “Star”
{
Class “Planet”
Texture “file”
Mesh “file”
Emissive true
NightTexture “file”
BumpMap “file”
BumpHeight “file”
Color [ R G B ]
SpecularColor [ R G B ]
SpecularPower 25.0
HazeColor [ R G B ]
HazeDensity 0.8
Radius 6378 in km
Oblateness 0.003
Atmosphere
{
Height 70 in km
Lower [ R G B ]
Upper [ R G B ]
Sky [ R G B ]
CloudHeight 40 in km
CloudSpeed 50 in km/h
CloudMap "file"
}
EllipticalOrbit
{
Period 0.6152
SemiMajorAxis 0.7233
Eccentricity 0.0068
Inclination 3.3947 in degrees
AscendingNode 76.681 in degrees
LongOfPericenter 131.533 in degrees
MeanAnomaly 181.979 in degrees
Epoch 2452028.18381755
}
RotationPeriod 23.9344694
Obliquity 3.3947 in degrees
LongOfRotationAxis 76.681 in degrees
RotationOffset 280.5 in degrees
PrecessionRate 48.98
Albedo 0.10
Rings
{
Inner 74658 in km
Outer 140000 in km
Texture "saturn-rings.png"
Color [R G B]
}
}
The format wrecks it here so it's available here....
SSC Model
This may help
Tom
M
Malenfant
Guest
If you want it more rigorous/exact, the orbital period is:
P = SQRT [(d^3 * 4pi^2) / (G * M)]
where P = Orbital Period in Seconds, d = Orbital Distance in metres, G = Universal Gravitational Constant (6.672 x 10-11 Nm2kg-2), and Mp = Mass of Primary in kg (Sol is 1.9891 x 10^30 kg).
Divide P by 3600 to get orbital period in hours. Divide P by 86400 to get orbital period in days.
P = SQRT [(d^3 * 4pi^2) / (G * M)]
where P = Orbital Period in Seconds, d = Orbital Distance in metres, G = Universal Gravitational Constant (6.672 x 10-11 Nm2kg-2), and Mp = Mass of Primary in kg (Sol is 1.9891 x 10^30 kg).
Divide P by 3600 to get orbital period in hours. Divide P by 86400 to get orbital period in days.
I know this belong in the software forum but...
Has anyone put your system formulas into a
program Malenfant? I've looked at it and it
would be useful (and quick) if it was. As it is
I have H&E for making system details. It seems to use the major systems for generating systems
(CT,MT,TNE,GURPS). We all know
these can make for interesting worlds.
Tom
Has anyone put your system formulas into a
program Malenfant? I've looked at it and it
would be useful (and quick) if it was. As it is
I have H&E for making system details. It seems to use the major systems for generating systems
these can make for interesting worlds.
Tom
M
Malenfant
Guest
I've got loads of excel sheets with them in, but no actual programs. One of these days I'll consolidate it all...
Indeed... On the copy I have at home, I have a Star Trek Starbase orbiting Yori, with a Star Trek "Generic looking" ship in orbit next to it. I'd be *much* happier if I could get a couple 3ds files of Traveller ships to use...Originally posted by Jonathon Barton:
</font><blockquote>quote:</font><hr />Originally posted by Berg:
Mr. Scarecrow,
You draw most excellent ship models. You know Celestia can use 3D models in it to show space flight....
Tom
They won't be as detailed or as realistic as my other models, you understand because they have to be drawn realtime, but they'll be recogniseable at least =)
Crow
Andrew Boulton
The Adminator
If people make a list of the ships they want, I'll do the ones Crow doesn't want to
Might be worth starting a new thread for this.
Might be worth starting a new thread for this.
Hell don't take the leftovers, Andrew. If you want to do some, then do the ones you want. We have very different styles (and to be fair, yours feels more like Traveller anyway) and you also work a lot faster than me. Just bear in mind that these need to be real low detail,low poly game level models or Celestia will turn into a slide-show. You can get away with a fair bit as virtually nothing else is drawn on screen at the same time, but still. It pays to be frugal.
I've been having a look at Celestia this lunchtime and it all looks pretty straight forward. I'll have to have a mess with some basic 3D models next week and see what happens.
Crow
I've been having a look at Celestia this lunchtime and it all looks pretty straight forward. I'll have to have a mess with some basic 3D models next week and see what happens.
Crow
Actually, scratch that, I just looked at some of the spacecraft models and they're all around the 12-17,000 polygon mark. That's absurdly detailed but I guess if everyone's machine can handle it then it's not really an issue. I'll probably try not to go over about 2-3,000 polys myself.
Crow
Crow
jonathonbarton
SOC-12
Celestia lets you zoom in to absurdly detailed levels of zoom, as well...Those 17000 polys can be put to good use.
I'm thinking that Celestia does LOD, too, but I can't be sure. I know that in MSFS, if you encounter a model that doesn't have LOD implemented, it renders all the polys in ever frame - no matter how far away the object is, resulting in a HUGE FPS hit. Celestia doesn't do that for whatever reason.
I'm thinking that Celestia does LOD, too, but I can't be sure. I know that in MSFS, if you encounter a model that doesn't have LOD implemented, it renders all the polys in ever frame - no matter how far away the object is, resulting in a HUGE FPS hit. Celestia doesn't do that for whatever reason.
Well I've been playin in the Trojan Reaches sector and look what I found...
Perrior/Trojan Reaches...
I even made a little movie flyin' past...
Nap of Perrior
All courtesy of Celestia
Tom
Perrior/Trojan Reaches...
I even made a little movie flyin' past...
Nap of Perrior
All courtesy of Celestia
Tom
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