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 Book⦠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 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mailman.speleo.sk/pipermail/therion/attachments/20121101/8d8e9f7c/attachment.html>
