Bruce, thanks for you explanation. It appears I missed to carefully read the Therion Book!
Marco Marco On Wed, Oct 31, 2012 at 7:08 PM, Bruce <bruce at tomo.co.nz> wrote: > Marco**** > > I tested your example and got the result you described with both xvi and > pdf outputs.**** > > ** ** > > I think you have found the transition defined by âvthresholdâ.**** > > From the Therion Bookâ¦**** > > â**** > > vthreshold <number> <units> â threshold for interpreting LRUD readings as > left-right-front-back reading perpendicular to the shot.**** > > If passeges are horizontal (inclination < vthreshold), LR is perpendicular > to the shot and UD is vertical.**** > > If passages are more or less vertical (inclination > vthreshold), even UD > becomes perpendicular to the shot â otherwise passages would not look very > good. In the case of vertical shots, UD is interpreted as north-south > dimension from the station to allow tube-like modelling of verticals**** > > â**** > > I had thought the default value of vthreshold was 60 degrees, but it seems > it may be around 67.5 degrees.**** > > ** ** > > Bruce**** > > ** ** > > ** ** > > _______________________________________________ > Therion mailing list > Therion at speleo.sk > http://mailman.speleo.sk/mailman/listinfo/therion > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mailman.speleo.sk/pipermail/therion/attachments/20121101/60faca22/attachment.html>
