Prefer loading speed over "NT maps not supported" reporting

src/map/IMG/rgnfile.cpp

@@ -99,18 +99,20 @@ bool RGNFile::init()
 		  && readUInt32(hdl, _pointsOffset) && readUInt32(hdl, _pointsSize)))
 			return false;
 	}
+
 	if (hdrLen >= 0x7D) {
 		quint32 dictOffset, dictSize;
 		if (!(seek(hdl, _gmpOffset + 0x71) && readUInt32(hdl, dictOffset)
 		  && readUInt32(hdl, dictSize)))
 			return false;
 
-		if (dictSize || dictOffset) {
-			qWarning("%s: NT compression not supported", qPrintable(fileName()));
+		// NT maps
+		if (dictSize || dictOffset)
 			return false;
-		}
 	}
 
+	_init = true;
+
 	return true;
 }
 
@@ -418,6 +420,9 @@ void RGNFile::objects(const RectC &rect, const SubDiv *subdiv, LBLFile *lbl,
 {
 	Handle rgnHdl, lblHdl, netHdl;
 
+	if (!_init && !init())
+		return;
+
 	QVector<RGNFile::Segment> seg(segments(rgnHdl, subdiv));
 	for (int i = 0; i < seg.size(); i++) {
 		switch (seg.at(i).type()) {
@@ -447,6 +452,9 @@ void RGNFile::extObjects(const RectC &rect, const SubDiv *subdiv, LBLFile *lbl,
 {
 	Handle rgnHdl, lblHdl;
 
+	if (!_init && !init())
+		return;
+
 	if (polygons && subdiv->polygonsOffset() != subdiv->polygonsEnd()) {
 		quint32 start = _polygonsOffset + subdiv->polygonsOffset();
 		quint32 end = subdiv->polygonsEnd()

src/map/IMG/rgnfile.h

@@ -14,12 +14,10 @@ public:
 	RGNFile(IMG *img)
 	  : SubFile(img), _offset(0), _size(0), _polygonsOffset(0),
 	  _polygonsSize(0), _linesOffset(0), _linesSize(0), _pointsOffset(0),
-	  _pointsSize(0) {}
+	  _pointsSize(0), _init(false) {}
 	RGNFile(SubFile *gmp, quint32 offset) : SubFile(gmp, offset), _offset(0),
 	  _size(0), _polygonsOffset(0), _polygonsSize(0), _linesOffset(0),
-	  _linesSize(0), _pointsOffset(0), _pointsSize(0) {}
-
-	bool init();
+	  _linesSize(0), _pointsOffset(0), _pointsSize(0), _init(false) {}
 
 	void objects(const RectC &rect, const SubDiv *subdiv, LBLFile *lbl,
 	  NETFile *net, QList<IMG::Poly> *polygons, QList<IMG::Poly> *lines,
@@ -75,6 +73,8 @@ private:
 		quint8 _data;
 	};
 
+	bool init();
+
 	static bool sign(BitStream &bs, int &val);
 	static int bitSize(quint8 baseSize, bool variableSign, bool extraBit);
 
@@ -103,6 +103,8 @@ private:
 	quint32 _linesSize;
 	quint32 _pointsOffset;
 	quint32 _pointsSize;
+
+	bool _init;
 };
 
 #ifndef QT_NO_DEBUG

src/map/IMG/vectortile.cpp

@@ -46,7 +46,7 @@ bool VectorTile::init()
 	if (_gmp && !initGMP())
 		return false;
 
-	if (!(_tre && _tre->init() && _rgn && _rgn->init()))
+	if (!(_tre && _tre->init() && _rgn))
 		return false;
 
 	return true;