Version 1197 was commited by markb on 2009-09-16 20:39:25 +0100 (Wed, 16 Sep 2009) Make size estimate for lines and shapes more cautious. It was estimating that 2 bytes per point would be needed but although this is adequate for a lot of lines/shapes, some require more than that so make it err more on the safe side by estimating 4 bytes per point.