mapnik/mapnik — Issue #917: TextSymbolizer: Overlapping semitransparent text halos
Author: IvanSanchez
Created: 2011-10-13 14:44:08+00:00
State: open

Very big semitransparent text halos overlap each other. Best explained with a picture:

![Bad halos](http://ivan.sanchezortega.es/mapnik/texthalo1.png)

See how the halo is darker inbetween the letters? Instead, the halo color should be the same for the whole label, something like:

![Good halos](http://ivan.sanchezortega.es/mapnik/texthalo2.png)

Not a big problem, but can be noticed when rendering high-resolution (300ppp, 600ppp) maps.

Bonus points if halos of different text labels in the same layer are handled properly.

(The images are 4x super-sized "control room" style. Used "nik2img --scale-factor 4")