[mkgmap-dev] Include the following patches into trunk -- Patch4 - decrease douglas peucker error

Wed Mar 2 14:12:21 GMT 2011

Okay I've done some comparisons between the two approximations.

For polygons the old version is much better because the patched version 
creates bad artifacts. For streets at resolution 23 (if used) to 21 I 
prefer it too. At resolution 20 I am indifferent and cannot really 
decide what is better. However from 19 to x the  approach as given by 
the patch is far superior (drawing speed on GPS much higher, actually 
using the normal DP filter maps become more or less unusable for 
resolution 16,18 or 19 on etrex).

Can someone see how this behaviour could be implemented for lines only 
from resolution 20 or 19 downwards, while keeping the current approach 
of the DP filter for the rest?