NEW addon : Hubble's classification chart in Celestia

[Cham]

I'm building another layer : the Hubble's classification. It isn't finished yet, since I want to add sone CMOD lines (may be not) and nice some labels :

galaxies.jpg

I also noticed that the SBa and SBb templates are reversed, relative to others. I wonder why.

Of course, the addon can be toggled ON/OFF at will.

EDIT : Here's the final addon :

Hubble_classification.zip

[ElChristou]

H?h?... that is pretty cool... Perhaps this chart could be better at a cosmological scale?

[Cham]

Perhaps this chart could be better at a cosmological scale?

The galaxies in this chart are located at 1 million LY from Sol, and have a typical size of 100 000 LY diameter.

[ElChristou]

Ah ok... (huge chart in that case!)

I wonder about some kind of construction using galaxies...

[Cham]

I wonder about some kind of construction using galaxies...

Heheheee, you're reading my mind : filaments, walls and bubbles...

[ElChristou]

Cathedral!

[Cham]

The addon is almost finished. I'm just wondering about the transparent square around each galaxy type. Looks like some 3D picture or "hologram", in Celestia. Any opinion ?

A view from Earth :

hubble1.jpg

A view at close range :

Hubble2.jpg

[Hungry4info]

I personally prefer it without the square.
Pretty neat add-on by the way =)

[Cham]

I've edited the first post.

[ElChristou]

The addon is almost finished. I'm just wondering about the transparent square around each galaxy type. Looks like some 3D picture or "hologram", in Celestia. Any opinion ?

What about a dimmer square (really dim) and a light frame around?

[Cham]

What about a dimmer square (really dim) and a light frame around?

I was thinking too about something like this. I'll try it. I may also add the % of each class in the visible universe.

[Cham]

Here's a test version. Do you think this is better ? Personally, I'm not sure...

galaxies2.jpg

[ElChristou]

Here's a test version. Do you think this is better ? Personally, I'm not sure...

galaxies2.jpg

If you go this way, with a larger square (to let breath a bit more the galaxies) and a thinner frame, it should be ok...

[Cham]

This is the best I could do, with the frame. What do you think ?

galaxies3.jpg

[ElChristou]

Not sure. A simple yellow line for the frame is not possible?

[Cham]

Not sure. A simple yellow line for the frame is not possible?

Like in the previous test with a frame ? I think it's looking "heavy". Do you mean a simple CMOD line ?

[Cham]

I think this is very good (CMOD frame) :

frame.jpg

And if some people don't like the frame, it can be removed easily. The color of the frame can be edited very easily too. I also placed the semi-transparent glass into the unique CMOD frame file, so everybody could change its transparency effect and color according to taste.

[ElChristou]

I think this is very good (CMOD frame) :

And if some people don't like the frame, it can be removed easily. The color of the frame can be edited very easily too. I also placed the semi-transparent glass into the unique CMOD frame file, so everybody could change its transparency effect and color according to taste.

Yep, not bad! And the all customizable stuff is always the best solution!

[Cham]

The balance is now perfect (to my taste) :

framePlane.jpg

It's really a great thing to be able to fusion pure CMOD lines with simple planes, into the same TEXT CMOD file. The match is perfect. So everybody could simply remove the frame or the glass seperately, or both (galaxies without any frame and glass). The CMOD code is very simple :

Code: Select all

#celmodel__ascii

material  # Invisible
opacity 0
end_material

material  # Weak orange for the frame
   emissive 0.45 0.35 0
   diffuse  0.45 0.35 0
   opacity 0.5
end_material

material  # Semi-transparent for the Glass Plane
   emissive 0.694 0.522 0.741
   diffuse 0.694 0.522 0.741
   opacity 0.10
end_material

mesh  # basic mesh to center the model in Celestia
  vertexdesc position f3 end_vertexdesc

vertices 4
6.75 0 6.75
6.75 0 -6.75
-6.75 0 -6.75
-6.75 0 6.75

points 0 5
0
1
2
3
0

end_mesh

mesh  # Frame
 vertexdesc position f3 end_vertexdesc

vertices 4
5 0 5
5 0 -5
-5 0 -5
-5 0 5

linestrip 1 5
0
1
2
3
0

end_mesh

mesh  # Glass Plane
vertexdesc position f3 normal f3 end_vertexdesc

vertices 12
-5 0 5 0 -1 0
5 0 -5 0 -1 0
5 0 5 0 -1 0
5 0 -5 0 -1 0
-5 0 5 0 -1 0
-5 0 -5 0 -1 0
-5 0 -5 0 1 0
5 0 5 0 1 0
5 0 -5 0 1 0
5 0 5 0 1 0
-5 0 -5 0 1 0
-5 0 5 0 1 0

trilist 2 12
0 1 2 3 4 5 6 7 8 9 10 11

end_mesh


And that plane with glass CMOD could also be used for other purposes (Milky Way galactic plane, for example, or to place a frame around something else).

[Cham]

I added the population statistics, according to Celestia's database. I would prefer to show the % in the real visible universe, but I'm finding few info about that, and the data is very inconsistent, on the net. Any suggestion ?