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

[Stacho Mudrak]

Wookey wrote:

> That example (scrap bmb2_s3) has a streamway with sandbanks. Having got the
> large water area to work, I find that some of the sandbanks are sandy, but
> some are covered in water. What determines when an area follows the outer
> wall, or the sandbank border? IS the only way to be sure to get the right
> thing to split the wall at the sandbank?


When I have to draw something like this, I draw one border curve that goes behind the wall on those places, where wall is areas active border.   In the output, such border and area are clipped by walls.

> This gets back to the problem that making changes to line which surround
> areas is problematic - if you split a line that is part of an area then both
> lines losetheir IDs and the area breaks. This is a tricky problem, but what
> you really want is for the areas and lines to get re-written so they all
> still work.


May be in the future it will be neccessary, but again - every time I draw area that should be surrounded by walls also, I just let it overlap walls and in the output this are will be clipped correctly.

Regards, S.