Wookey wrote:
I thin we need a better understanding of what makes a 'pillar'. I thought a pillar was a closed loop within a passage, but that is not a closed loop (a passage goes off underneath from the gap - see the scan to get the full idea). So when does therion need to be told that an outline is 'in'?
I agree that in the cave would nobody calls the massif between two passages 'pillar', but therion sees things purely geometrically -- doesn't matter if a closed loop within a passage is small or large, formed by a fallen block or two passages. So everything surrounded by a scrap border and not belonging to the scrap is a 'pillar' and need to have "-outline in" option specified.
OK. so there is some threshold of closeness that prevents a join happening automatically (to the right place). I think some form of feedback is needed that allows me to work out that the join has gone wrong due to excessive distortion. How did you work out what was wrong?
Yes, there should be a warning that therion couldn't find a join.
Also what happens if an area crosses a scrap join? Presumably I have to draw an invisible borderline across the join in order to make a closed area (in both scraps)? Or is there some special way to indicate that it is one area?
It would work, but areas (the pattern) wouldn't join smoothly :(( There is unfortunately no better solution now. Martin