Render halos < 1.0 with fast halo algorithm #1781

merged 4 commits into from Apr 24, 2013


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herm commented Mar 30, 2013

Implements a simple function to render halos using the fast algorithm even if the halo is smaller than one pixel.


springmeyer commented Apr 2, 2013

I like the look of this and it seems promising. But I think we need more before/after cases to look at with .1 -> .5 range halos using the fast vs full approach. There may be cases where the faster method cannot draw thin enough halos. However, your improvements look great in the one reference image.


herm commented Apr 3, 2013

The halos look quite well for thin sizes, too.


springmeyer commented Apr 23, 2013

k, please merge after updating docs. Thanks!

herm added a commit that referenced this pull request Apr 24, 2013

Merge pull request #1781 from mapnik/subpixelhalo
Render halos < 1.0 with fast halo algorithm.

@herm herm merged commit 24913c4 into master Apr 24, 2013

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