[mkgmap-dev] [PATCH] Option to extend sea sectors at extract borders

Mon Jan 18 12:19:57 GMT 2010

Felix,

> I am guessing that the oversize sea sector is getting dropped somehow
> by the clipping. Hopefully, WanMil will issue a new version that only
> bloats the sea box when MP is being used.

Yes, I changed his code so that it only bloats the sea sector when
using multipolygon for the sea generation and generate-sea=polygons
works again:

			if(generateSeaUsingMP) {
				// the sea background area must be a little bigger than all
				// inner land areas. this is a workaround for a mp shortcoming:
				// mp is not able to combine outer and inner if they intersect
				// or have overlaying lines
				// the added area will be clipped later by the style generator (?)
				sea.addPoint(new Coord(nw.getLatitude()-1,nw.getLongitude()-1));
				sea.addPoint(new Coord(sw.getLatitude()+1,sw.getLongitude()-1));
				sea.addPoint(new Coord(se.getLatitude()+1,se.getLongitude()+1));
				sea.addPoint(new Coord(ne.getLatitude()-1,ne.getLongitude()+1));
				sea.addPoint(new Coord(nw.getLatitude()-1,nw.getLongitude()-1));
			}
			else {
				sea.addPoint(nw);
				sea.addPoint(sw);
				sea.addPoint(se);
				sea.addPoint(ne);
				sea.addPoint(nw);
			}