mbostock/d3 — pull request #972 by jasondavies (2012-12-18 11:58:57+00:00)
Title: Handle spheres in fallback stream.

Includes test. This was causing an error if the fallback stream was in use.

Previously, clipping would convert any spheres to polygons prior to resampling, but without clipping a sphere can be passed to resampling, and thus to the context.