QGIS API Documentation  2.17.0-Master (973e4b0)
Classes
qgscrscache.h File Reference
#include "qgscoordinatereferencesystem.h"
#include <QHash>
#include <QReadWriteLock>
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Classes

class  QgsCoordinateTransformCache
 Cache coordinate transform by authid of source/dest transformation to avoid the overhead of initialization for each redraw. More...
 
class  QgsCRSCache
 Caches QgsCoordinateReferenceSystem construction, which may be expensive. More...