[mkgmap-dev] Multipolygons and basic question on polygons with holes
From Steve Ratcliffe steve at parabola.me.uk on Fri Jan 1 13:30:23 GMT 2010
On 01/01/10 13:15, Christian Gawron wrote: > I still have the feeling that the cause of the problems with > multipolygons may be due to the representation of "polygons with holes" > in the img file. > If I'm not mistaken, the multipolygon code connects the inner and outer > polylines forming the multipolygon which either leads to spurious lines > ("triangles", see sea polygons in mp-mode) or to vanishing inner polylines. Yes that is what it does. > Is this really the correct representation of "polygons with holes" in > the img file? I've no idea, I've been wondering too. It could be that the way Mark is doing the sea/island polygons is the right way, except that if I'm not mistaken his method only works with a TYP file, whereas it is clearly possible to do this without since the MetroEurope maps don't have a typ tile. I am going to look into some examples, if not today then tomorrow. : There is also still a problem with the rendering of polygons with > holes in the polish format. The attached mp-file is displayed correctly Yes that case is just not implemented as far as I know. Happy 2010 to everybody. ..Steve
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