Wow, that is a serious deep dive! It looks like far more than I need.
I don't like to put every single profile on the map, especially for
longer caves. It just gets to be too much. You can't see the cave for
the profiles! And the cross-sections!
As long as we are dreaming about future features - How about a way to
spit out a multi-page PDF file with the plan map on one page. A second
page (maybe more) can contain the profiles, cross-sections, photos,
legend and perhaps other stuff.
It would be nice to have a way to break extended profiles into sections
so they can be placed at different points around the map. That can sort
of be done with elevation profiles by specifying a different perspective
angle for each piece. It's a lot of work, though, to keep track of
which angle was specified for each section of profile.
Another thing that would be nice - A way to draw a line on the plan map
which indicates the path shown in a profile. I think it could be done
with either a border or a section line with no arrows.
I would also like a way to produce a map which has SOME (not all)
cross-sections. Right now it is all or nothing. You either get every
cross-section or you get no cross-sections. This might be done by using
PDF layers and letting the cross-section scrap specify the layer it goes on.
How about a new directive called "layer"? This gives the layer a name
and perhaps some other properties. Then the layout section can give a
list of layers to include. Scraps would have an option to name the
layer they go on.
===============
Bill Gee
On 2/15/25 16:03, Bruce Mutton wrote:
If you want more than one variation of the extended elevation, eg. with the leg
folded left in one, and right in the other ... you are in for a small
nightmare, and I will let Bruce help you out, because he has a way to do it.
It is not straightforward, because Therion is really designed to have just one
extended elevation.
I've been on a journey.
In 2018 I decided that extend options in-line with the survey data was
inadequate and I experimented with moving all extend controls to a separate
extended elevation centreline. The reasons and details of how are in
https://therion.speleo.sk/wiki/extend?s[]=extend#extended_elevations
Almost immediately I started having problems as loops were added to ongoing
survey projects. New loops cause existing extended centrelines and drawings to
be broken, requiring careful (often time consuming) extend control edits to
resolve. Until a few weeks ago I thought the problems were due to my choice to
move extend control to separate centrelines outside of the primary survey data
enumeration.
With my most recent project I decided to go back to leaving extend statements
in-line with survey data, for simplicities sake (so I thought). Then I started
adding some loops. What I have found leads me to suspect that the in-line and
separate centreline choice makes no difference to the problems caused by use of
ignore and addition of loops to existing extended centreline development. The
'extended elevation additional loops breaks previous loops' problem is a
Therion problem, not 'the way we use Therion' problem. The 'small (extended
elevation) nightmare' is associated with multiple loops, not with multiple
extended elevations.
Which leads me to thinking that the ultimate solution will be to add to Therion
a new extended elevation control set when it comes to 'extend ignore'. Rather
than saying 'when there is a choice, don't take this path' we should instead
say, 'when there is a choice, TAKE this path'. I feel like this would reduce
the uncertainty of implying what we want by specifying only one of the options
(at a time) that we don't want. Better to directly specify the ONE option we
DO want and not care about the possibly many options we don't want. This is
especially the case when there are more than three legs meeting at a station.
If such a change would make all existing extended elevations incompatible, then
having a 'UseNewExtendControl' control in Therion would seem to be a tolerable
mitigation. And Therion continues with two extended elevation control sets.
So yes, it's not straight forward! :-)
Bruce
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