Therion is a complete package which processes survey data and generates maps or 3D models of caves.
A new beta version (5.3.9) has been released and is available here.
Therion solves the most annoying problem of cave cartography – how to keep a map of large and complicated cave system always up-to-date.
Main features include:
Complete maps with all the detail. No additional ink stroke is needed.
Maps are dynamic, always up-to-date – i.e. they are
automatically re-drawn after loop closure, blunder fix, scale or symbol set change
3D models are created using 2D maps
It runs on wide variety of platforms: Linux, Windows, Mac OS X. It is completely free, released under the terms of GNU GPL, with source code available. It doesn’t require any other commercial software to run.
The latest version includes following additions/bug fixes:
Therion:
* added new point types: ice-stalactite, ice-stalagmite, ice-pillar,
clay-choke, clay-tree
* added new wall subtypes: pit, flowstone, moonmilk, overlying
* added new symbol groups: ice, sediments
* added -height option for pit/wall:pit
* added new layout option: color map-bg transparent
* Austrian symbol set added (thanks to Georg Pacher)
* updated German translation (thanks to Georg Pacher)
* updated Italian translation (thanks to Marco Corvi)
* added bulgarian translation (thanks to Alexander Yanev)
* added possibility to define own coordinate system in therion.ini (cs-def)
* updated survex img library to version 1.1.15
* added option -enable/disable splay-shots to 3d model export
* bugs fixed:
– fixed huge coordinate numbers in extended elevation xvi
– xvi with sketches export
– unnecessary warningcheck changes eliminated from metapost code
– fixed bug with 3d model generation from scraps without outline
– fixed bug with missing patterns in symbols.xhtml
– fixed bug – direction point not working with line secion
– fixed inaccurate clipping of coloured scrap background
– fixed placement of surface bitmaps with larger offset
– fixed alignment of some point symbols in AUT symbol set
– missing white fill below cave passages in transparent PDFs if background
colour is white (needed if the map is included into other map with
non-white background)
– fixed incorrect line width conversion in some patterns
– hide white background of scraps when the PDF layer containing them
is invisible
– constrained Delaunay triangulation engine replaced by poly2tri
– passage outline scanning algorithm improved
– “nosurvey” shots allowed between unfixed stations
– added missing area flowstone and moonmilk into legend
– fixed xvi export of extended elevation
– fixed symbol-hide/show point remark bug
– fixed wall:debris bug in AUT symbol set (thanks to Georg Pacher)
– fixed layout color map-bg transparent bug
– LRUD area dimensions is drawn for all shots before these shots are drawn
(centerline is compact when map is exported from centerline only)
xtherion:
* bugs fixed:
–
loch:
* VTK file export changed to binary type (problem with coordinate systems)
* bugs fixed:
– vthreshold should work now for LRUD modelling
Source: Therion