[therion] Re: Left-right-up data

[Julian Todd]

Stacho Mudrak wrote:

>
> Well, you are right :( . In the current version, these numbers are not used anywhere. In fact, we have added them after Wookey's requests and we want to implement them into 3D modelling in the future.
>
> The problem is, that everybody interprets these numbers in a different way or better to say in a different direction. Somebody uses LR dimensions ortogonal to the previous shot, sombody in the axis of previous and next shot. The same with UD data - sometimes it is vertical, sometimes ortogonal to the shot (steep and vertical passages).
>
> So we need to add also some flags, that will identify which cross-section orientation should be used for particular station. But these flags are nowhere standardised, so we have to introduce our own and this may take some time.
>
> In fact, we have a holiday season right now, so therion developement is very problematic, but after holidays, we will definitely continue with 3D modelling and LRUD data will be also included into 3D model (you are not the only one who is asking for that).
>
Before you proceed along these lines, look at:
  http://www.goatchurch.org.uk/Tunnel/xsecto.html

This pretty much defines a normal form within which all the styles of cave cross-section location and orientation that I've come across can be encoded.  Please consider this before you opt for a system that uses lots of complicated flags and modes.
Julian T.