[Mapserver-users] support for GD anti-aliased line drawing

William K woklist at charter.net
Mon Jul 5 15:45:00 EDT 2004


Let's see, I played with this a bit.  I can't remember where I found 
documentation on it (not in the standard docs, didn't see it on the 
wiki).  Might have been on the list, or maybe I poked around in the 
source?

I think you first need to use an RGB image mode in the map file.  Now, 
in the symbol file, set up line symbols with TYPE CARTOLINE.  There are 
extra settings for symbols that apply to cartolines: linecap, linejoin 
and linejoinmaxsize (maybe more).  Then use these symbols in the map 
file.

WARNING: it is VERY slow (I think that's GD's fault).  I gave up on it, 
that's why I don't remember the details too well.  I found much better 
speed drawing a normal map at 2x size, then scaling antialiased (must 
use mapscript).

On Jul 5, 2004, at 6:52 AM, andy wrote:

> Dear users,
> I have read about mapserver support for GD anti-aliased line drawing. 
> How is it possible to enable it??
>
> Thank you,
>
> Andrea
> _______________________________________________
> Mapserver-users mailing list
> Mapserver-users at lists.gis.umn.edu
> http://lists.gis.umn.edu/mailman/listinfo/mapserver-users
>
>
-----
William Kyngesburye <kyngchaos at charter.net>
http://webpages.charter.net/kyngchaos/

"Mon Dieu! but they are all alike.  Cheating, murdering, lying, 
fighting, and all for things that the beasts of the jungle would not 
deign to possess - money to purchase the effeminate pleasures of 
weaklings.  And yet withal bound down by silly customs that make them 
slaves to their unhappy lot while firm in the belief that they be the 
lords of creation enjoying the only real pleasures of existence....

- the wisdom of Tarzan




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