Subject: [ggl] optimization of polygon intersection and difference calculations
From: Vishnu (vrang3)
Date: 2011-03-30 14:16:59
Are the functions that calculate intersection and difference of two
multi_polygons optimized to rule out testing polygons in the 'subject' set
against those polygons in the 'clip' set that don't overlap with the
subject? Suppose one has a multi_polygon with one polygon in a 'subject' set
and a second multi_polygon with 1000 polygons in the 'clip' set. It's
possible that only one of the 1000 polygons in the 'clip' set overlaps the
polygon in the 'subject' set.
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