Posts by selden

by selden
26.06.2020, 19:17
Forum: Help Central
Topic: Virtualtex taking too LONG
Replies: 3
Views: 451

Re: Virtualtex taking too LONG

All of the items you mention combine to cause problems. The in-memory image that's being cut up is at least 1.5 GB. (32Kx16Kx3 bytes/pixel) plus the sizes of internal scratch files and input and output files. The 1GB file is caused by ImageMagick not having access to enough ram, so it creates a &quo...
by selden
18.06.2020, 21:31
Forum: Textures
Topic: Creating Realistic Gas Giant Textures
Replies: 11
Views: 2914

Re: Creating Realistic Gas Giant Textures

It seems to build and run OK under Cygwin under Windows 10, but runs absurdly slowly. By default it builds only a single-threaded version. I'm not going to try to build a multi-threaded version, though. It'll probably be another half-hour before I see any results. I plan to upload a zip containing a...
by selden
11.06.2020, 23:52
Forum: Textures
Topic: Random gas giant
Replies: 12
Views: 931

Re: Random gas giant

Maybe. I've never tried to do it using GProjector. I'm used to using scripts and often find that GUI programs make unwarranted assumptions.
by selden
11.06.2020, 23:49
Forum: Bugs
Topic: very annoying cloud bug
Replies: 17
Views: 770

Re: very annoying cloud bug

As I wrote previously, you need to provide a copy to the forum of the failing cloudmap surface texture image and of the SSC which you use so that an expert can examine them. In other words, put those two files into a Zip archive and upload that Zip archive here. Here are step-by-step instructions wh...
by selden
11.06.2020, 20:12
Forum: Bugs
Topic: very annoying cloud bug
Replies: 17
Views: 770

Re: very annoying cloud bug

Sorry, but Cloudmaps must be either PNG or DDS/DXT with an 8-bit transparency (Alpha) channel. Jpeg does not support the use of an Alpha channel. The Alpha channel is what defines the outlines of the clouds: the regions between the clouds must be transparent.
by selden
11.06.2020, 20:01
Forum: Bugs
Topic: very annoying cloud bug
Replies: 17
Views: 770

Re: very annoying cloud bug

I've seen symptoms similar to that when the clouds' PNG was in a format that Celestia doesn't understand (e.g. 16bit Alpha channel). Which version of Celestia are you using? Also, to make it easier for someone to help debug, please provide the cloud texture image and the SSC that you used to draw it.
by selden
11.06.2020, 19:57
Forum: Textures
Topic: Random gas giant
Replies: 12
Views: 931

Re: Random gas giant

I've used MMPS to convert between cubemaps and equirectangular ones. It's a command-line program which can convert between several popular map projections. Although initially written for Linux, it works fine under Windows when built under Cygwin. See http://www.users.globalnet.co.uk/~arcus/mmps/ If ...
by selden
10.06.2020, 13:36
Forum: Help Central
Topic: Anybody besides me tired of constant captchas getting here?
Replies: 37
Views: 1821

Re: Anybody besides me tired of constant captchas getting here?

Bots usually have problems recognizing pictures of the named objects.

FWIW, I haven't experienced any for several days.
by selden
03.06.2020, 13:20
Forum: Add-on development
Topic: Current project: Modified Stargen (a solar system generator)
Replies: 66
Views: 16495

Re: Current project: Modified Stargen (a solar system generator)

I dunno if the errors would be affected by providing an output file spec, but you probably should give that a try instead of just going with the defaults. Certainly something is causing confusion, though, since the default output is supposed to be html, not csv. See below. The output file formats ar...
by selden
02.06.2020, 15:05
Forum: Add-on development
Topic: Current project: Modified Stargen (a solar system generator)
Replies: 66
Views: 16495

Re: Current project: Modified Stargen (a solar system generator)

Two possibilities I can think of: 1.You might not be running the copy of stargen that you think you're running, since your stargen command does not specify where stargen is located. 2. stargen might be having problems writing its output file. See below for details. ======== 1. Did you copy stargen t...
by selden
02.06.2020, 00:23
Forum: Add-on development
Topic: Current project: Modified Stargen (a solar system generator)
Replies: 66
Views: 16495

Re: Current project: Modified Stargen (a solar system generator)

The critical sequence of four words in three commands is deceptively simple: cd build cmake .. make (Note the space and two dots after the command cmake, which you didn't mention.) Below are the gory details of the procedure that I followed. I've included a few samples of the output that cmake and m...
by selden
01.06.2020, 14:00
Forum: Add-on development
Topic: Current project: Modified Stargen (a solar system generator)
Replies: 66
Views: 16495

Re: Current project: Modified Stargen (a solar system generator)

There should be a file in "CMake Files" named "CMakeOutput.log" which should contain a history of what cmake did. FWIW, I used the command-line version of cmake, which put the stargen executable in the current default directory. In my case, that was stargen-master/build Note that...
by selden
31.05.2020, 21:28
Forum: Help Central
Topic: Moving my old add-ons
Replies: 20
Views: 885

Re: Moving my old add-ons

It's the kind of mistake anyone can make, and it's hard to notice if you aren't looking for it.

Have fun!
by selden
31.05.2020, 17:03
Forum: Help Central
Topic: Moving my old add-ons
Replies: 20
Views: 885

Re: Moving my old add-ons

One problem that I see is that the spelling of the directory name is incorrect: it should be "textures" not "Textures". Linux distinguishes between upper and lower case. I'm surprised you didn't get lots of other errors about missing image files. Edited to add: The lack of error ...
by selden
31.05.2020, 16:09
Forum: Help Central
Topic: Moving my old add-ons
Replies: 20
Views: 885

Re: Moving my old add-ons

If you are willing to provide the contents of your .ssc file plus a listing of the associated files, that might help someone to notice the problem. Specifically, to generate the file listing, cd to the directory where your .ssc is located and type the command ls -lR that'll list the files in the cur...
by selden
31.05.2020, 15:55
Forum: Add-on development
Topic: Current project: Modified Stargen (a solar system generator)
Replies: 66
Views: 16495

Re: Current project: Modified Stargen (a solar system generator)

You need all of the files, and they need to be in appropriate directories relative to one another, so it's best to download them all in a Zip archive file which you then expand into some appropriate location on your computer. More specifically: Use your favorite browser to open the page https://gith...
by selden
31.05.2020, 14:40
Forum: Help Central
Topic: Moving my old add-ons
Replies: 20
Views: 885

Re: Moving my old add-ons

Celestia's "console" is available only within Celestia's own window. While Celestia is running, type a tilde (~) to see it and use the keyboard's up/down arrow-keys to navigate up and down in it. Tilde is Shift-` at the upper left corner of many keyboards. If you have many addons, you migh...
by selden
31.05.2020, 14:05
Forum: Add-on development
Topic: Current project: Modified Stargen (a solar system generator)
Replies: 66
Views: 16495

Re: Current project: Modified Stargen (a solar system generator)

Unfortunately, I don't think Omega13a ever made his source code publicly available. :( Correction: a 2014 version is available on GitHub at https://github.com/omega13a/stargen It looks like he did a significant "refactor" of the source code and used cmake to help build his variant. There ...
by selden
30.05.2020, 13:55
Forum: Add-on development
Topic: Current project: Modified Stargen (a solar system generator)
Replies: 66
Views: 16495

Re: Current project: Modified Stargen (a solar system generator)

To build Stargen from scratch, cd to the directory where you extracted Stargen's files. Then type the single-word command make If you want to rebuild Stargen after you've modified one or more of its source files, you normally only have to type the make command again. It'll recompile only the files y...
by selden
28.05.2020, 16:15
Forum: Utilities
Topic: A humble tool for creating Celestia systems
Replies: 8
Views: 1187

Re: A humble tool for creating Celestia systems

The Windows version of 7-Zip (which is free) has no problems reading those .RAR files. If you haven't already, you might give the Linux version of 7-Zip a try.

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