[Therion] Horrific Warping between maps where I want my lines to join

[Martin Sluka]

An advice to beginners:

1. Always check each scrap independently for “holes”. Such hole indicate incorrect position of walls according to base principle of drawing a map: The map is the projection of a passage to horizontal plane and the walls are borders of such projections. So there MUST NOT be walls inside (excluding walls with parameter “-outline none” for some reasons) the borders of such passage. Holes will produce mess in warping, joining and 3D models. They are incorrect in any way, because there is not unspecified rock (background) inside a passage.

Export map of a crap with these lines in layout to see the holes.:

layout check_holes
symbol-hide group all
symbol-show line wall
debug station-names #for better orientation only
colour map-bg 85
end layout

export map …. layout check_holes

2. When there is a complicated situation to draw passage in one scrap divide the scrap to smaller ones just to simplify the process.

3. Always check two (or more) scraps to be joined for overlaps and  continuity of walls of adjoining scraps before any joining.

4. A pit, a chimney or a hole among blocks is a gap to join scraps together too. But you should use manual joining point of line to point of line in such case.

Martin

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