tree b1d54a0018e660cb4afb7c65626c949fd58b4ce4
parent c8316dfc05f20da2381b5a29ee29bd05b4a85098
author ztenghui <ztenghui@google.com> 1409617191 -0700
committer ztenghui <ztenghui@google.com> 1409617407 -0700

Fix the (0,0) vector case for extra vertices computation

TODO: Figure out why we have collided vertices from input polygon.

b/17340792

Change-Id: I6636ff957ef17514bd11cf290ccc0a2c302aca0b