[Therion] Joining surveys at a curved/sloping pitch

[Xavier Pennec]

Hi Tarquin,

Adding the option -outline out to the (closed) line of  your pit on the 
top scrap should create the whole that you want in the blue color so 
that you will see the green color of the bottom scrap. Personally, I 
would not use a line pit in the bottom scrap (this is not a pit on the 
floor of that level) but rather a line of type ceiling-step  to indicate 
the arrival of the top pit on the ceiling.

Hope this helps

Xavier

Le 10-May-19 à 13:08, Tarquin Wilton-Jones via Therion a écrit :
> Hi all,
>
> I have an awkward situation in my survey. One of our caves was surveyed
> in 2 surveys. The 2 surveys join at a sloping pitch with a secondary
> hole dropping into it.
>
> I have managed to draw it all in a way that makes logical sense, but I
> can't work out how to join the two surveys in the right manner. See
> attached. Green = upper passage survey. Blue & purple = lower passage
> and pitch survey. The part I want to fix is the green-blue boundary,
> where the blue should ideally follow the "pit" lines
>
> Ideally, pitches/pits should have their lower colour taken from the
> lower passage, and their upper colour taken from the upper passage. This
> is easy when they are in the same survey; you just draw your "pit" line
> in the upper scrap, and then follow that exact same line with a
> "-visibility off" wall in the lower scrap.
>
> When joining surveys, they are joined in a straight line at the scrap
> boundaries. This makes it very hard to draw the curved pitch heads,
> since curves are not straight lines, and you cannot follow the exact
> same line as the other scrap, because the other scrap sits in another
> survey, in another .th2 file.
>
> I can make additional "lower" scraps in the "upper survey" to follow the
> pit outlines, but how can I make those scraps take on the colour of a
> scrap using survey stations in another survey file?
>
> Does anyone have any methods to work with this situation? (Preferably
> not something that becomes just a bunch of trial and error, and then
> joining every single curve point in the two surveys. I could do that,
> but it is really painful.)
>
> Thanks for any advice,
>
> Tarquin
>
> _______________________________________________
> Therion mailing list
> Therion at speleo.sk
> https://mailman.speleo.sk/listinfo/therion

-- 
> -------------------------
> Xavier Pennec
> Senior Research Scientist / Directeur de recherche
> Asclepios project-team, INRIA Sophia-Antipolis
> 2004 Route des Lucioles, BP93
> F-06902 Sophia-Antipolis Cedex, France
> +33 4 92 38 76 64
> +33 6 78 35 16 90
> http://www-sop.inria.fr/asclepios/
> -------------------------------

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.speleo.sk/pipermail/therion/attachments/20190510/047836c4/attachment.htm>