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Therion 6.3.3 problems compiling thconfigs on Windows
by Bruce Mutton 24 Jan '25

24 Jan '25

Good morning Just installed 6.3.3 on Windows 10, and noticed some odd behaviours, including an untrapped crash that does not happen with 6.3.1, briefly documented here. https://github.com/therion/therion/issues/629 Anyone else? Bruce

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Re: [Therion] Therion Digest, Vol 229, Issue 12
by Martin Kern 23 Jan '25

23 Jan '25

Thank you Bruce ! I always thought this option was used to set a black&white legend, not to hide lookup... Le 23 janvier 2025 à 12:00:18, therion-request(a)speleo.sk ( therion-request(a)speleo.sk) a écrit: Send Therion mailing list submissions to therion(a)speleo.sk To subscribe or unsubscribe via the World Wide Web, visit https://mailman.speleo.sk/listinfo/therion or, via email, send a message with subject or body 'help' to therion-request(a)speleo.sk You can reach the person managing the list at therion-owner(a)speleo.sk When replying, please edit your Subject line so it is more specific than "Re: Contents of Therion digest..." Today's Topics: 1. Disable lookup legend (Bruce Mutton) ---------------------------------------------------------------------- Message: 1 Date: Thu, 23 Jan 2025 20:08:10 +1300 From: "Bruce Mutton" <bruce(a)tomo.co.nz> To: "'List for Therion users'" <therion(a)speleo.sk> Subject: [Therion] Disable lookup legend Message-ID: <000201db6d65%24918c3110%24b4a49330%24(a)tomo.co.nz> Content-Type: text/plain; charset="utf-8" Martin colour-legend <smooth/discrete/off/on> have a look at https://therion.speleo.sk/wiki/examples?s[]=lookup#colour_palette_scales_-_… < https://therion.speleo.sk/wiki/examples?s%5b%5d=lookup#colour_palette_scale…> Bruce From: Therion <therion-bounces(a)speleo.sk> On Behalf Of Martin Kern Sent: Wednesday, 22 January 2025 22:31 To: therion(a)speleo.sk Subject: [Therion] Disable lookup legend Hi, I?m looking for disable lookup legend in the legend box. Does anyone know how to do it? Thanks !

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Disable lookup legend
by Martin Kern 23 Jan '25

23 Jan '25

Hi, I’m looking for disable lookup legend in the legend box. Does anyone know how to do it? Thanks !

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Cross platform clean-up of system commands
by Tarquin Wilton-Jones 18 Jan '25

18 Jan '25

Hi, I am making a survey intended to be open source, which means it needs to compile everywhere, with minimal edits. I use PDFtk for post-processing the PDF output, to include something else in the PDF. This generates some temp files, that I don't want to leave in the output folder, in case someone uses them by mistake, so I want to delete them. Windows and Linux/Mac use different syntax, but "system" is a blunt tool, and does not seem to allow me to check which command to use: system "del tempfile.pdf" system "rm -f tempfile.pdf" That generates an error message, and Therion thinks the file has failed to compile when it is actually unimportant. Is it possible to code branch, like this: if( windows ) { system "del tempfile.pdf" } else { system "rm -f tempfile.pdf" } Is it possible to tell Therion not to consider the result of a "system" command when determining if compilation failed? Like using @system to ignore the output. Alternatively, does someone have a syntax of command that works on any of these three platforms? This almost works, but Linux chucks junk into a file called "nul" (even though it is not using that command): del tempfile.pdf 2>nul || rm -f tempfile.pdf 2>/dev/null And yes, I know I could demand installation of Python and clean up that way, but it seems like such overkill when all I want to do is delete a temp file. I would rather not add yet another dependency. Cheers, Tarquin

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Scope of select and unselect
by Bill Gee 17 Jan '25

17 Jan '25

Hello everyone - I am starting a new cave map project and trying to apply some stuff I learned a few weeks ago. I am not getting what I want, and I think it is because I do not understand the scope of select and unselect in a thconfig file. Reading the Therion Book - page 50 - It appears that "select" is not processed sequentially. It has the same effect no matter where it appears in a thconfig file. Is that correct? And if that is correct, then what purpose is served by "unselect"? What I want is a variety of exported maps showing only the drawn parts of the cave. Then I want a map which shows all drawn parts AND all centerline. I defined several maps and surveys in the .th file to cover this. However, when I do the compile it acts like BOTH sets of defined maps are exported. My thconfig file looks like this: source main.th # repeated for all the layouts I want to use layout endlayout # produce the basic maps select MainMap export ... export ... # produce the debug map unselect MainMap select MainMap-Debug export ... Thanks! -- =============== Bill Gee

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Error in compiling (v 6.3.3)
by Francesco Serafin 17 Jan '25

17 Jan '25

Hi, I installed therion 6.3.3 on MacOS Sequoia (v 15.2). When I compile a config file, it gives ERROR: Can not execute "therion -x cave1.thcfg". Is there a way to fix this? Thank you, Best, Francesco

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Re: [Therion] loch segmentation fault at launch
by Bill Gee 14 Jan '25

14 Jan '25

Oops! I meant to send this to the entire list rather than just Olly. =============== Bill Gee On 1/14/25 07:06, Bill Gee wrote: > Thanks Olly! I gave this a try. It works well. This is on Fedora 41. > > I am not familiar with how to build patch files, so I did this in a > slightly different way. > > 1) Change to the source directory for loch (presumably already > downloaded from GIT). In my case that is ~/Installs/therion-6.3.3/loch > > 2) cp lxGUI.cxx lxGUI.cxx.backup > > 3) Use a text editor to modify lxGUI.cxx. Copy the lines from Olly's > message below starting with +#ifdev __WXGTK3__ and continuing to the > last +#endif. > > 4) Paste those lines into lxGUI.cxx starting at line 75. Save the file. > > 5) Change to the build directory. In my case: cd ~/Installs/ > therion-6.3.3/build > > 6) Clean up files from previous compile: make clean > > 7) Compile just loch: make -j 4 loch > > 8) The new binary is in loch/loch. In my case: ~/Installs/ > therion-6.3.3/build/loch/loch is the filename. > > 9) Become root, then copy the new loch over the old one. In my case: > > #cp /home/bgee/Installs/therion-6.3.3/build/loch/loch /usr/local/bin > > > =============== > Bill Gee > > On 1/13/25 19:38, Olly Betts wrote: >> [Including the list in my reply as this seems of broader interest] >> >> On Mon, Jan 13, 2025 at 04:52:46PM -0600, Bill Gee wrote: >>> Olly, you're a wizard for remembering that bit of arcana. The >>> command line >>> you suggested works. No more seg faults in loch! >> >> Great. >> >>> I do not have any packages called "wxWidgets" installed. On Fedora >>> they are >>> called wxGTK. Here is the list of packages I have: >>> >>> bgee@main2:~$ rpm -qa | grep -i wxGTK >>> wxGTK-i18n-3.2.6-1.fc41.noarch >>> wxGTK-3.2.6-1.fc41.x86_64 >>> wxGTK-gl-3.2.6-1.fc41.x86_64 >>> wxGTK-webview-3.2.6-1.fc41.x86_64 >>> wxGTK-media-3.2.6-1.fc41.x86_64 >>> wxGTK-devel-3.2.6-1.fc41.x86_64 >> >> Its upstream project name is wxWidgets - wxGTK is the flavour using GTK, >> which Fedora have chosen to use as their package name. >> >>> I also do not have any packages like "libglew". It might be part of >>> the VTK >>> package. I see a file named vtk-glew.h. >> >> It's not part of VTK - that header seems to be some VTK layer for >> supporting building with different versions of glew. >> >> I don't think wxWidgets or therion uses glew so you may well not have it >> installed, but some other apps which use wxWidgets also use glew - I >> think it's necessary that wxWidgets and glew agree on whether to use EGL >> or not for those apps. >> >>> I will modify the launcher for loch to set the environment variable. >> >> We have a workaround in Survex's aven for this - I'd suggest something >> similar in loch would be helpful as it would avoid these crashes >> completely. I'm not easily able to test this patch actually works as I >> don't have Fedora but this or something like it should do the job (I >> have checked it compiles on a platform where the conditionals both >> evaluate true): >> >> diff --git a/loch/lxGUI.cxx b/loch/lxGUI.cxx >> index fc00b31e..41a4583c 100644 >> --- a/loch/lxGUI.cxx >> +++ b/loch/lxGUI.cxx >> @@ -73,7 +73,29 @@ >> #endif >> +#ifdef __WXGTK3__ >> +# if !(wxUSE_GLCANVAS_EGL-0) >> +# include <stdlib.h> >> + >> +// The GLX-based wxGLCanvas doesn't work under Wayland, and the code >> +// segfaults: https://github.com/wxWidgets/wxWidgets/issues/17702 >> +// >> +// Therefore we force X11 unless we're using the EGL-based wxGLCanvas >> +// (which was added in wxWidgets 3.1.5 and hasn't been backported to >> +// 3.0.x). >> +// >> +// Setting GDK_BACKEND=x11 is the recommended workaround, and it >> seems to >> +// work to set it here. GTK2 doesn't support Wayland, so doesn't need >> +// this. >> +struct ForceX11 { >> + ForceX11() { >> + setenv("GDK_BACKEND", "x11", 1); >> + } >> +}; >> +static ForceX11 forcex11; >> +# endif >> +#endif >> //////////////////////////////////////////////////////////////////////// >> // Main frame >> >> >> Cheers, >> Olly >

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Re: [Therion] loch segmentation fault at launch
by Olly Betts 14 Jan '25

14 Jan '25

[Including the list in my reply as this seems of broader interest] On Mon, Jan 13, 2025 at 04:52:46PM -0600, Bill Gee wrote: > Olly, you're a wizard for remembering that bit of arcana. The command line > you suggested works. No more seg faults in loch! Great. > I do not have any packages called "wxWidgets" installed. On Fedora they are > called wxGTK. Here is the list of packages I have: > > bgee@main2:~$ rpm -qa | grep -i wxGTK > wxGTK-i18n-3.2.6-1.fc41.noarch > wxGTK-3.2.6-1.fc41.x86_64 > wxGTK-gl-3.2.6-1.fc41.x86_64 > wxGTK-webview-3.2.6-1.fc41.x86_64 > wxGTK-media-3.2.6-1.fc41.x86_64 > wxGTK-devel-3.2.6-1.fc41.x86_64 Its upstream project name is wxWidgets - wxGTK is the flavour using GTK, which Fedora have chosen to use as their package name. > I also do not have any packages like "libglew". It might be part of the VTK > package. I see a file named vtk-glew.h. It's not part of VTK - that header seems to be some VTK layer for supporting building with different versions of glew. I don't think wxWidgets or therion uses glew so you may well not have it installed, but some other apps which use wxWidgets also use glew - I think it's necessary that wxWidgets and glew agree on whether to use EGL or not for those apps. > I will modify the launcher for loch to set the environment variable. We have a workaround in Survex's aven for this - I'd suggest something similar in loch would be helpful as it would avoid these crashes completely. I'm not easily able to test this patch actually works as I don't have Fedora but this or something like it should do the job (I have checked it compiles on a platform where the conditionals both evaluate true): diff --git a/loch/lxGUI.cxx b/loch/lxGUI.cxx index fc00b31e..41a4583c 100644 --- a/loch/lxGUI.cxx +++ b/loch/lxGUI.cxx @@ -73,7 +73,29 @@ #endif +#ifdef __WXGTK3__ +# if !(wxUSE_GLCANVAS_EGL-0) +# include <stdlib.h> + +// The GLX-based wxGLCanvas doesn't work under Wayland, and the code +// segfaults: https://github.com/wxWidgets/wxWidgets/issues/17702 +// +// Therefore we force X11 unless we're using the EGL-based wxGLCanvas +// (which was added in wxWidgets 3.1.5 and hasn't been backported to +// 3.0.x). +// +// Setting GDK_BACKEND=x11 is the recommended workaround, and it seems to +// work to set it here. GTK2 doesn't support Wayland, so doesn't need +// this. +struct ForceX11 { + ForceX11() { + setenv("GDK_BACKEND", "x11", 1); + } +}; +static ForceX11 forcex11; +# endif +#endif //////////////////////////////////////////////////////////////////////// // Main frame Cheers, Olly

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loch segmentation fault at launch
by Bill Gee 13 Jan '25

13 Jan '25

Testing out Therion 6.2.1+dev, I find that loch does not work. When launched from a command line, it runs for one or two seconds and then gives bgee@main2:~$ loch Segmentation fault (core dumped) bgee@main2:~$ This is on Fedora 41, and it happens on several machines. If it helps any, I captured the core dump file and put it on a server. https://campercaver.net/MiscFiles/lochcore.dump.zip -- =============== Bill Gee

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Combining PDFs with a page break
by Tarquin Wilton-Jones 13 Jan '25

13 Jan '25

Hi, Fairly sure the answer is "that will need an external application". But I have two Therion output PDFs. (Imagine plan and elevation, if that helps you.) I want to combine them into a single PDF. Easy enough, use: map-image 0 0 ne But what if I want them in the same PDF, but always separated by a page break in the PDF, so that the user can select "print page 2" to print just one of them? Cheers, Tarquin

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