Since z coordinates can represent potentially any height
unit and reference point, it's not safe to assume that they
always represent height in metres relative to the ellipsoid.
Instead, leave z values untouched by default with geometry
transforms, and make transforming z an optional parameter
Refs #14702
implicitly shared copy of an internal cache instead of recreating the
coordinate sequence again and again.
Improves performance of the nodetool on large features a lot (refs #13963)
Also introduce Qgs(Coordinate|Ring|Point)SequenceV2 typedefs.
- removes storage of bounding box from QgsPointV2 (gives significant
decrease in size of object)
- more efficient calculation of bounding box for linestrings
Additionally, this commit moves the bounding box invalidation to a
virtual QgsAbstractGeometryV2::clearCache() method, so that other
non-bounding box caches can also be cleared when the geometry
is modified.
- Setting exterior ring will force all interior rings to match
dimensionality of exterior ring
- add equality operator
- use correct WKB types for rings when creating polygon from WKB
- segmentize curves when setting exterior ring with curved segments
- fix export to GML2/3 (should use LinearRing, not LineString as
ring element tag)
- fix incorrect centroid calculation (was always returning 0,0)
- fix closestSegment when numPoints < 2
- fix broken leftOf calculation for closestSegment
- area calculation when numPoints < 2
Plus add more unit tests
QString methods
Using single quotes is a significant performance boost. Rough
benchmarks indicate the QString single quote methods take
about 15% of the time the double quote variants take.
- when creating geometry from WKT, upgrade dimensionality of geometry
if coordinates are 3/4 dimensional
- match dimensionality of collections to child dimensionality
- fix area of curves was non-zero if curve is closed
- don't consider m values when testing for curve closedness
- add unit tests for closedness
- add unit tests for CircularStrings, CompoundCurves, CurvePolygon,
tests with geometries with Z/M values
