Anti Aliasing
Vincent Schut
schut at SARVISION.NL
Tue May 16 02:28:05 PDT 2006
Steve Lime wrote:
> You need a couple of other things:
>
> - a 24-bit output format (e.g. IMAGETYPE PNG24)
> - alpha blending turned on for the layer (e.g. TRANSPARENCY ALPHA)
>
> That should get it working...
To chime in:
But what if I want to have antialiasing *and* semi-transparency? How
would I define e.g. a opacity of 60 when I already have 'transparency
alpha' in my layer?
Vincent.
>
> Steve
>
> Stephen Lime
> Data & Applications Manager
>
> Minnesota DNR
> 500 Lafayette Road
> St. Paul, MN 55155
> 651-259-5473
>>>> ramesh karra <karrarm at YAHOO.COM> 05/15/06 6:49 PM >>>
> Hi,
>
> I have added 'ANTIALIAS TRUE' to all my STYLE objects
> but I do not see any difference in the map that's
> displayed. I was hoping to see smooth lines but there
> was no difference in the way lines(representing roads)
> are drawn with or without anti-aliasing. Is this the
> expected behavior? How can I get smooth lines?
>
> My layer is defined as follows:
>
> LAYER
> NAME roads
> DATA droad1
> STATUS OFF
> TYPE LINE
>
> PROJECTION
> "init=epsg:4326"
> END
>
> CLASS
> NAME "Roads"
> MAXSCALE 80000
> MINSCALE 20000
> STYLE
> ANTIALIAS TRUE
> COLOR 150 150 150
> WIDTH 3
> END
> STYLE
> ANTIALIAS TRUE
> COLOR 255 255 255
> WIDTH 1
> END
> END
> END
>
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