[mkgmap-dev] [PATCH v4] produce overlarge sea background only if generate-sea=multipolygon is enabled

Mon Jan 18 18:45:47 GMT 2010

Hi Steve,

> On 18/01/10 18:05, WanMil wrote:
> > Attached patch (against the mp branch) solves this.
> 
> OK thanks, applied.
> 
> Is everyone happy that this is now a big improvement over trunk?

It's performed well when processing the Baltic map.

One thought, and I may be completely wrong here because I haven't
looked at the "spec" for multipolygon processing, but this new MP
implementation seems to have a constraint that the inner polys can't
touch the outer poly(s). Is that so? and is that reasonable? After all
why is it not acceptable to have a MP like this:

.......*******.....
.......*******.....
.......*******.....
...................
...................

or even more interesting:

...........*........
..........***.......
.........*****......
....................

i.e. the inner poly butts up against the edge of the outer?

Are those "naughty" MPs?

Mark