Weiler–Atherton clipping algorithm: Difference between revisions

Revision as of 18:45, 23 July 2015

Revision as of 19:03, 23 July 2015

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Before applying to any polygon, the algorithm requires several preconditions to be fulfilled.

- Candidate polygons need to to be oriented clockwise.

- Candidate polygons should not be self intersecting (i.e. re-entrant).