mbostock/d3 — pull request #695 by jasondavies (2012-07-02 08:31:34+00:00)
Title: Fix #691: remove incorrect last interpolation step.

For closed polygons, the last point should simply be connected to the first clipped point, rather than be clipped to the clipping circle.

Without this last step, the [Azimuthal grid](http://bl.ocks.org/3021474) still works fine, but you can see the inconsistent clip edge when slowly changing the x-origin in the world countries Azimuthal example, because this step is needed to handle closed polygons.