Celestia Forums

Stereographic projection with a 180 degree diagonal field of view.

I worked with NASA on building this demo. The source code used to be available on a public SVN server, but I don't believe that server is running now. Anyone who wants the source can get it by request though. Almost all of the features in the demo were added via script. The actual modifications to t...

I want to use Celestia (specifically NASA's SCaN demo) as part of a museum exhibit, and I'm trying to figure out how to limit the user interface so the program executes properly. What I really want to do is disable the right click, and prevent the menu bar from appearing when you mouse up to it on ...

Fixed.

The skies were clear, but my drive motor broke just after sunset...



--Chris

I found something interesting running the MSI Afterburner monitoring tool. The test has been done at the location Chris was using (9 light years from earth, stars rendering only, 45 FOV). Here is the graph: http://www.quickfixcomm.com/Celestia/monitoring_lim-mag_0.89to15.09.png You can see that GPU...

* Every version of qmake that I've tried on Mac and Windows adds "celestia/qt/ui" to the header search path. Obviously, the ui/ prefix is unnecessary. If this is generally so then this seems like a sensible argument. Fridger ADDED : Indeed implementing your fixes for my chosen build direc...

Chris, my own interpretation of the lim.mag 12 drop matches yours perfectly. I also had tried lim.mag=10, 8 but displayed the one with the dramatic drop. This was the alfa Crux - centered test image with your new stars that above gave the strong fps-drop by a factor of two. The large number of star...

No significant loss or gain of performance. I did the test several times and the results are pretty steady. Looks like the EXT_framebuffer_sRGB extension is doing its job. When the EXT_framebuffer_sRGB extension is available, there are two benefits: 1. Better quality, since the GPU can do gamma cor...

Chris, in the context of our Qt discussion, I compiled SVN 5043 with your new star patch, which worked fine. However, with my laptop (the graphics card of which does not support the EXT_framebuffer_sRGB extension as you know), I observe a rather dramatic decrease in performance (star style = Point ...

Joe wrote:Well, no response I guess this turns up a wrong topic or bad question being asked. Close up then

It's a good topic

I guess the problem is that hyperbolic orbits are unbounded. The biggest hurdle in drawing them is figuring out which part of the orbit to show. Suggestions?

--Chris

Did you also take into consideration e.g. Linux under gcc with your fixes and that with QtCreator and without ? What about Linux installations using older versions of QtCreator? If you do the compilation via qmake ... && make (i.e without IDE), there is no alternative to using a definite bu...

But, I'm fairly sure that you'll need these celestia.rc and qtbookmarks.h changes in order to do a clean build with the latest Qt Creator and MSVC. I'm going to try that out today. --Chris So do you think I am getting dirty builds with QtCreator 2.0 and SVN 5043 ? ;-) Yes :) Please don't forget to ...

Meanwhile, despite the source and Xcode, I think I remember we do need another download (Qt source?) to build a Qt version, is this still right? Sorry that I haven't had a chance to work on the Xcode project yet. To build the Qt version, you need the Qt SDK for Mac: http://qt.nokia.com/downloads It...

In this image, the limiting magnitude is adjusted so that magnitude 10 stars are just visible.

Okay now back to the compiling problem. Chris' idea about changing "qtbookmarks.h" helped the build along. Now it comes to a stop when trying to open "celestia\qt\Celestia.ico". Just to be sure I got a new version from SVN and named that "trunk 2" before changing the f...

I have been playing with Chris's code (big thanks for sharing!). The new star rendering is very nice and can be gorgeous with some tweaking. First, I have got rid of the 1 Ly solar system size limit so that the transition between shader and mesh rendering is smooth. Then I have been playing with th...

It seems more likely to me that it's the new version of QtCreator that's at fault: the version of Qt that Christian is running comes with QtCreator 2.0, while previous versions shipped with QtCreator 1.3. OK, for completeness, I also updated my Qt Creator 1.3.1 to the current version 2.0 (with MinG...

Chris, Christian, I have built the Qt version many times both in Win32 and Linux on different machines, since Celestia-Qt exists. I have many times upgraded the Qt versions as well, now using 4.6.2. I never encountered any problems with the ui directories and just use the official celestia.pro file...

Here seems to be the base problem in this case, there is no folder "ui" under "celestia/src/celestia/qt/ui/"!! There is only a folder "celestia/qt/data"! See attached picture of tree structure. Just to be sure, I just checked svn itself and there is also no folder &quo...