Nyall Dawson af0d68b882 Implement QgsGeometry::isEmpty()
Faster than QgsGeometry::isGeosEmpty() because it avoids the
conversion to GEOS geometries and just uses the QgsAbstractGeometry
subclasses directly.

Also implements faster isEmpty() overrides for specific
QgsAbstractGeometry subclasses.
2017-01-31 07:15:51 +10:00
..
2016-08-10 12:08:52 +02:00