[Tilesathome] New Osmarender/Batik Issue

[Brent Easton]

Hi Dodi,

*********** REPLY SEPARATOR  ***********

On 27/11/2007 at 10:38 PM Dodi  wrote:

>Hi Brent,
>
>at  http://www.freemap.sk/osmarender6.zip is newer version which has no 
>NaN's for tile 235 153 8
>
>but i still recommend to add smart-linecap="no" to every <line>  rule in
>low 
>zoom map-features files ...  using then has no visual outcome for 
>lowzoomlevel tiles but svg file is about 15% smaller, aditional 
>"waycleaning" gives only about 25% of original SVG size, and if
>waycleaning is used before bezier curve hinting it brings more smooth curves at line 
>joins (because of way how lines2curves.pl works)

Ok, this sounds good. This is the waycleanup.pl you mentioned the other day? Smaller SVG's will help greatly with processing problems.


>...and for  nicer osmarender map layer I have small modification for 
>tilesGen.pl with tile antialising
>
>http://c.tah.openstreetmap.org/Tiles/tile/12/2271/1415.png
>vs .
>http://c.tah.openstreetmap.org/Tiles/tile/12/2272/1415.png
>
>you can discover visible difference on tertiary roads
>
>or http://wiki.openstreetmap.org/index.php/Image:Tile_antialiasing.png 
>for 
>same tile side-by-side with and without antialiasing
>
>Would we like to use this improvement for whole osmarender layer ???

Yes, this would be good, AA is defintely needed for lowzoom Z10 & Z11, but is there a processing overhead?

Regards,
Brent.


____________________________________________________________
Brent Easton                       
Analyst/Programmer                               
University of Western Sydney                                   
Email: b.easton at uws.edu.au