Posts by Boux

by Boux
31.10.2005, 19:09
Forum: Development
Topic: I can see for Miles and Miles!
Replies: 16
Views: 9555

Re: I can see for Miles and Miles!

I must admit that a beer in pint has nothing to do with a beer in half a litre.
Simply does'nt taste the same :D
by Boux
30.10.2005, 20:56
Forum: Textures
Topic: comet tails
Replies: 47
Views: 25937

Re: comet tails

I am thinking of adding some random perturbations in the coloring and transparency to add some "life" to the tail. Color covering a range of tints from white to purple-blue and local changes of transparency simulating some variations in density. The effect should be very subtle though, no overkill. ...
by Boux
30.10.2005, 20:44
Forum: Textures
Topic: comet tails
Replies: 47
Views: 25937

Re: comet tails

Same trip to M31, looks good here too:

Image

Yep, I have seen that a lot of parameters can be tweaked.
It seems there is some redundant code in there, am I wrong?
by Boux
30.10.2005, 20:23
Forum: Textures
Topic: comet tails
Replies: 47
Views: 25937

Re: comet tails

Hehe! You wrote "FT1.2"...
Does that mean ... hummm? Soooon? :wink:
by Boux
30.10.2005, 16:35
Forum: Textures
Topic: comet tails
Replies: 47
Views: 25937

Re: comet tails

New rendering with light blue-greyish tint with more transparency: http://jmmi.club.fr/celestia/c-2001.png For those interested in playing with the code, in render.ccp: lines 5785 { 5786 float shade = abs(viewDir * v.normal * v.brightness); 5787 glColor4f(0.2f, 0.2f, 0.3f, shade/1.5); 5788 glVertex(...
by Boux
30.10.2005, 14:38
Forum: Textures
Topic: comet tails
Replies: 47
Views: 25937

Re: comet tails

Yep, another light blue ionic tail, if possible at a small angle with the dust tail.
Should not be as proeminent as the existing one though.
Have to look at the code again :idea:
by Boux
30.10.2005, 14:23
Forum: Development
Topic: Derivation of DSO brightness versus distance in FT1.2
Replies: 4
Views: 2958

Re: Derivation of DSO brightness versus distance in FT1.2

Well, I am a bit rusted on the math side but your great work demonstrates again that Celestia is not simply a toy but something really serious built on a real, rational, scientific approach.
Kudoos :D
by Boux
30.10.2005, 14:01
Forum: Textures
Topic: comet tails
Replies: 47
Views: 25937

Re: comet tails

Sure, with nothing in the background:
Image
RGB values are 0.3 0.3 0.3 to get a light greyish tint.
by Boux
30.10.2005, 10:18
Forum: Textures
Topic: comet tails
Replies: 47
Views: 25937

Re: comet tails

Here it is!
Always wanted to get rid of the horrible blue color:
Image
Made some changes in the rendering source code.
by Boux
29.10.2005, 15:26
Forum: Celestia Users
Topic: New Celestia-1.4.0pre-FT1.1 Version for Download
Replies: 300
Views: 90739

Re: New Celestia-1.4.0pre-FT1.1 Version for Download

Thanks for liking it :D It took some time (a few hours) to figure out how bmp2pts analyses the input picture, what is really critical in the picture, what kind of algorithms it uses and then to understand what the Celestia engine is making out of the template file. Interesting. I am on a crash C++ c...
by Boux
29.10.2005, 13:58
Forum: Celestia Users
Topic: New Celestia-1.4.0pre-FT1.1 Version for Download
Replies: 300
Views: 90739

Re: New Celestia-1.4.0pre-FT1.1 Version for Download

Hi all! I have made some changes in both Celestia source code and bmp2pts and re-compiled the whole stuff (Linux). I have added a new galaxy type "MW" for the Milky Way so that only the MW shows up with my new template (and not all SBcs as before). In bmp2pts, I have tweaked the brightness calculati...
by Boux
26.10.2005, 19:59
Forum: Celestia Users
Topic: models not appearing in Celestia
Replies: 38
Views: 19348

Re: models not appearing in Celestia

This low fps figure clearly shows that you have no hardware rendering. With 3d acceleration enabled, you should get a figure in the thousands fps. Now, I am an nvidia guy so I can't help more, sorry. One thing I am sure of, though. The driver is not installed as it should be and your system is falli...
by Boux
26.10.2005, 08:45
Forum: Celestia Users
Topic: models not appearing in Celestia
Replies: 38
Views: 19348

Re: models not appearing in Celestia

Hi andylong,
Your driver is not properly installed, or at least the 3d acceleration part.
Apparently, you have got stale Mesa libs in the way.
How does glxgears run, and how many fps are you getting?
by Boux
23.10.2005, 14:06
Forum: Celestia Users
Topic: New Celestia-1.4.0pre-FT1.1 Version for Download
Replies: 300
Views: 90739

Re: New Celestia-1.4.0pre-FT1.1 Version for Download

Anyone willing to try the following? It's a simple resize of Powell's 'best guess' for the milky way. It'd probably either come out like the NASA one or just be a more-or-less blank disc, I know. But I'd be interested to see if there is a difference. http://philrsss.anu.edu.au/~carl/milkyway.png [/...
by Boux
23.10.2005, 14:01
Forum: Celestia Users
Topic: New Celestia-1.4.0pre-FT1.1 Version for Download
Replies: 300
Views: 90739

Re: New Celestia-1.4.0pre-FT1.1 Version for Download

Hello t00fri, done! I am now looking at the source code of Bmp2pts. Many parameters can be adjusted right there in the internal data and formulas, like blob's brightness, effect of randomness, etc.. I am playing around also with threshold, and other stuff. As compilation takes only a fraction of a s...
by Boux
23.10.2005, 13:23
Forum: Celestia Users
Topic: New Celestia-1.4.0pre-FT1.1 Version for Download
Replies: 300
Views: 90739

Re: New Celestia-1.4.0pre-FT1.1 Version for Download

OK, new try. Here is M100 again, thanks to tell me if it is bright enough now for your displays. Click the link below to see the screenshot. http://jmmi.club.fr/celestia/m100_4.png The template is there: http://jmmi.club.fr/celestia/SBc.pts Parameters: - threshold 0.5 - randomness 0.02 - 9780 points...
by Boux
22.10.2005, 20:16
Forum: Celestia Users
Topic: New Celestia-1.4.0pre-FT1.1 Version for Download
Replies: 300
Views: 90739

Re: New Celestia-1.4.0pre-FT1.1 Version for Download

OK guys.
I will do some more tweaks tomorrow, normalize and re-work the thing.
I have to go back to social life right now :D
by Boux
22.10.2005, 19:56
Forum: Celestia Users
Topic: New Celestia-1.4.0pre-FT1.1 Version for Download
Replies: 300
Views: 90739

Re: New Celestia-1.4.0pre-FT1.1 Version for Download

Really weird, indeed 8O
It is very bright here, almost too much, exactly like the screenshot.
by Boux
22.10.2005, 19:24
Forum: Celestia Users
Topic: New Celestia-1.4.0pre-FT1.1 Version for Download
Replies: 300
Views: 90739

Re: New Celestia-1.4.0pre-FT1.1 Version for Download

OK, new try:
http://jmmi.club.fr/celestia/m100_2.png

New template:
http://jmmi.club.fr/celestia/SBc.pts

Don't understand. It's pretty bright here 8O
by Boux
22.10.2005, 18:37
Forum: Celestia Users
Topic: New Celestia-1.4.0pre-FT1.1 Version for Download
Replies: 300
Views: 90739

Re: New Celestia-1.4.0pre-FT1.1 Version for Download

Cham wrote:Very NICE !

Boux, can you make this template available ?

But is this really a type SBc galaxy ?


Hi, thanks, you can grab the template from here (right click and save):
http://jmmi.club.fr/celestia/SBc.pts

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