Custom Query (95 matches)

Phil Maynard reports that on 10.6.8 the about dialog throws up an assertion failure when opened:

../src/osx/core/bitmap.cpp(1501): assert "IsOK()" failed in GetHeight(): invalid bitmap

If you answer "No" to "Do you want to stop the program?" you get the about dialog, but the cave image is missing (only image is the aven icon).

This sounds like it is failing to load aven-about.png - most of the code just quietly handles that, but the minimum height for the sizer is unconditionally set to the height of the bitmap. If I delete this image on Linux, I get the same assertion, so I've fixed that part in commit [4c0a0a22e7b890c84e2c1da4e182e5212ee1aa53/git].

That leaves the question of why the image is failing to load. I tested the about dialog worked on OS X at some point between 1.2.18 and 1.2.19, and didn't get this assertion, so it may be related to the OS X version, or to changes after that.

I tried building Survex 1.2.38 from source. The version of wxWidgets that it downloads defaults to an older version of the OSX SDK, which is not included in the current version of Xcode.

Build gets further if I export an environment variable as follows:

export wxUSE_MACOSX_VERSION_MIN=10.9

That at least allows wxWidgets to build. Configuration in the buildmacosx.sh file needs updating.

general notion: it should be possible to process subsurveys from a file. e.g. cavern --survey surveyname would only process that named survey (and anything it contains). This would allow processing of structured survex data as if it were split into multiple files, but allowing more freedom in how files are structured, is useful in identifying lengths of segments (especially when a survex file may not be processable on it's own due to disjoint segments)

This would also be potentially useful in implementing loop-closure tools.