On 01.03.2011 19:44, Henning Scholland wrote:
Am 01.03.2011 19:38, schrieb Felix Hartmann:
On 01.03.2011 19:33, Felix Hartmann wrote:
The following patches are in my eyes really worthwhile and should be added to trunk. They all work fine without glitches.
1. Drop small Polygons I am not sure who wrote this patch, but I have been using it longtime and it certainly does improve map performance especially on higher resolutions. It removes all polygons which consist of less than 8 pixels.
If you deem that this is too extreme (though 8 pixels is really nothing, and polygons of less than 8 pixel size are barely noticeable anyhow - and only slow down map drawing) the following line could be reduced to maybe 6 or 4 pixels: + private static final int MIN_SIZE_POLYGON = 8; Ups forgot to say, I'm actually using it with a value of 15 and it seems to work pretty well with 15.
Wont it cause routing errors, if little highway-areas will be removed?
Henning What do you mean by highway areas? I removes lines consisting of 1 point but but not on the routing nodes, but only on visual display. A 1point line cannot exist in resolution 24 but only in resolutions 23 down. Neither in Mapsource nor on GPS I can see a difference of removing 1 point lines (yes there is a visual difference if removing polygons smaller than 15 pixels, but that usually makes the map better readable, 15 pixels is still tiny and causes rather a better readable map because small non identifiable crap gets removed).