[Therion] Map offset: just specify offset in complex dataset (proposes new "offset" thconfig compiler command)

[Stacho Mudrak]

Hi Beni,

first, I am sorry for the late answer.

Do I understand you correctly, that you want to mix "select survey" and
"unselect/offset particular map"? To be able to export all maps from a
given survey without the need of specification of the master map for this
survey. Am I right?

Select survey and unselect survey seems to work for me. But unselect map is
missing/not working, neither combination of map/survey select/unselect.
Normally - if map selection for a given projection is available, it is
used. If not, survey selection is used.

I think, unselecting/offsetting maps from survey selection is feasible
without any negative side effects. I am just not sure, how much work would
it be to implement it.

S.



On Thu, 9 Dec 2021 at 10:37, Benedikt Hallinger <beni at hallinger.org> wrote:

> Hello,
> I currently experiment with creating a nice overview map of a fairly
> complex part of the Hirlatz cave. The dataset spans about 8km in passage
> lengths in variuous levels with lots of over-/underlaying passages.
> The data is organised in surveys, where each survey defines at least a
> "Hauptmap" wich usually includes all the submaps the main map is
> composed of. The main intend of the "Hauptmap" is to nicely render the
> survey alone.
>
> Now I want to create an overview map and using the select statement I
> can easily instruct therion to suck in and render all the maps of the
> entire region. Offsets are stripped this way, but therion does a very
> nice job in sorting te maps according to the altitude, which eases my
> brain very much, since i don't need to wrap my head around sorting 54
> maps by hand. Therion does a splendid job with this already.
>
> However this produces one problem for me: I cannot render map offsets
> easily anymore.
> So what I had to do is to select the entire region using "select
> Wandaugenlabyrinth.Hirlatzhoehle" and render that.
> This will print the processes maps into the therion.log file.
>  From there I have picket it up to create a new "map" structure (`grep ^M
> therion.og |sort -r | awk '{print $3}'`).
> This i added to the thconfig file and selected that instead. There it is
> now easy to define offets again.
>
> BUT: This introduces another, long term problem:
> When sometimes in the future someone adds a new survey to this region,
> he needs to remember to merge its maps also into the overview map
> definition (at the correct position because of altitude!).
>
>
>
> Thus, it would be cool if we had some kind of "offset" thconfig command
> alongside the select one.
> This would allow me to read in the entire regions maps, and just specify
> offsets for the offset ones; something like this:
>
> ----- thconfig -----
> source ../../therion/Hirlatzhoehle.th
> select Wandaugenlabyrinth.Hirlatzhoehle   # read in all defined maps of
> the Region
>
> offset 173-Anschluss-177 at 173.Wandaugenlabyrinth.Hirlatzhoehle [20 15 m]
> below
> offset 177-Hauptplan at 177.Wandaugenlabyrinth.Hirlatzhoehle     [-30 -20
> m] above
> --------------------
>
> Expected result would be all the maps read and printed at their altitude
> level, but the two maps offset as already known from the "map" command.
> If someone adds, lets say,
> 200-Hauptplan at 200.Wandaugenlabyrinth.Hirlatzhoehle and recompiles the
> file, the new survey would be included *without specifying it
> explicitely*.
>
>
> Is such a command possible?
> I know it's not such a big deal with smaller caves, but in my dataset
> this would save a tremendous ammount of time down the road when I will
> make the atlas of Hirlatz regions (not to mention a big overview map).
>
>
> ps. and probably relatet: When I give "select
> Wandaugenlabyrinth.Hirlatzhoehle" and then "unselect
> 177-Hauptplan at 177.Wandaugenlabyrinth.Hirlatzhoehle", 177 survey is still
> printed to the map. I would had expected that the scraps of the map
> would be hidden from output.
>
>
> Kind regards,
> Beni
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