QgsAbstractGeometryV2* QgsGeometryFactory::geomFromWkb( QgsConstWkbPtr wkbPtr ) { if ( !wkbPtr ) return nullptr; //find out type (bytes 2-5) QgsWKBTypes::Type type = wkbPtr.readHeader(); wkbPtr -= 1 + sizeof( int ); QgsAbstractGeometryV2* geom = nullptr; geom = geomFromWkbType( type ); if ( geom ) { try { geom->fromWkb( wkbPtr ); } catch ( const QgsWkbException &e ) { Q_UNUSED( e ); QgsDebugMsg( "WKB exception: " + e.what() ); delete geom; geom = nullptr; } } return geom; }
QgsAbstractGeometryV2* QgsGeometryImport::geomFromWkb( const unsigned char* wkb ) { if ( !wkb ) { return 0; } //find out type (bytes 2-5) int type; memcpy( &type, wkb + 1, sizeof( int ) ); QgsAbstractGeometryV2* geom = 0; geom = geomFromWkbType( QgsWKBTypes::Type( type ) ); #if 0 type = QgsWKBTypes::flatType( QgsWKBTypes::Type( type ) ); switch ( type ) { case QgsWKBTypes::Point: geom = new QgsPointV2(); break; case QgsWKBTypes::LineString: geom = new QgsLineStringV2(); break; case QgsWKBTypes::CircularString: geom = new QgsCircularStringV2(); break; case QgsWKBTypes::CompoundCurve: geom = new QgsCompoundCurveV2(); break; case QgsWKBTypes::Polygon: geom = new QgsPolygonV2(); break; case QgsWKBTypes::CurvePolygon: geom = new QgsCurvePolygonV2(); break; case QgsWKBTypes::MultiLineString: geom = new QgsMultiLineStringV2(); break; case QgsWKBTypes::MultiPolygon: geom = new QgsMultiPolygonV2(); break; case QgsWKBTypes::MultiPoint: geom = new QgsMultiPointV2(); break; default: geom = 0; } #endif if ( geom ) { geom->fromWkb( wkb ); } return geom; }
QgsAbstractGeometryV2* QgsGeometryFactory::geomFromWkb( const unsigned char* wkb ) { if ( !wkb ) { return 0; } //find out type (bytes 2-5) int type; memcpy( &type, wkb + 1, sizeof( int ) ); QgsAbstractGeometryV2* geom = 0; geom = geomFromWkbType( QgsWKBTypes::Type( type ) ); if ( geom ) { geom->fromWkb( wkb ); } return geom; }