[therion] Re: Help - my cave is inside-out

[Martin Budaj]

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