Commits on Jul 8, 2015

1. improve round line joins for semi-transparent lines …

   mapbox/mapbox-gl-js#1359
   
   Round line joins used to be drawn by adding a semicircle cap to the end
   of each segment. This looked fine for opaque lines not for
   semi-transparent lines.
   
   This changes the triangulation so that round line joins don't overlap
   with segments. The gap between segments is filled with small triangles
   that look like pie slices. The edge of the round linejoin is made up of
   many short straight lines that look round at the sizes we draw lines.
   
   Since sharp angles are infrequent, this does not significantly affect
   the total number of triangles created.
   
   Joins for angles that are really sharp are still drawn with overlap.

   

   ansis committed Jul 8, 2015
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2. increase simplification for line annotations …

   to make them look better when drawn semi-transparently

   

   ansis committed Jul 8, 2015
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