Differential D2007 Diff 4944 tools/osm-simplify/BaseClipper.h

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tools/osm-simplify/BaseClipper.h

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1		//
2		// This file is part of the Marble Virtual Globe.
	nienhueserUnsubmitted Done please add copyright headers with the usual license bla and your name to each file nienhueser: please add copyright headers with the usual license bla and your name to each file
3		//
4		// This program is free software licensed under the GNU LGPL. You can
5		// find a copy of this license in LICENSE.txt in the top directory of
6		// the source code.
7		//
8		// Copyright 2016 David Kolozsvari <freedawson@gmail.com>
9		//
	nienhueserUnsubmitted Not Done IIRC BaseClipper shares a lot of code with ClipPainter. In such cases please add the original authors as well (just copy all Copyright... lines from the file and put them on top this one) nienhueser: IIRC BaseClipper shares a lot of code with ClipPainter. In such cases please add the original…
10
11		#ifndef BASECLIPPER_H
12		#define BASECLIPPER_H
13
14		#include <QPointF>
15
16		#include "GeoDataLinearRing.h"
17		#include "GeoDataLatLonBox.h"
18
19		using namespace Marble;
20
21		class BaseClipper
22		{
23		public:
24		BaseClipper();
25
26		static qreal tileX2lon( unsigned int x, unsigned int maxTileX );
27		static qreal tileY2lat( unsigned int y, unsigned int maxTileY );
28
29		static QPolygonF* lineString2Qpolygon(const GeoDataLineString &lineString);
30		static QPolygonF* linearRing2Qpolygon(const GeoDataLinearRing &linearRing);
31
32		static GeoDataLineString* qPolygon2lineString(const QPolygonF& polygon);
33		static GeoDataLinearRing* qPolygon2linearRing(const QPolygonF& polygon);
34
35
36		void initClipRect(const GeoDataLatLonBox& clippingBox);
37
38		void clipPolyObject ( const QPolygonF & sourcePolygon,
39		QVector<QPolygonF> & clippedPolyObjects,
40		bool isClosed );
41
42		private:
43
44		inline int sector( const QPointF & point ) const;
45
46		inline QPointF clipTop( qreal m, const QPointF & point ) const;
47		inline QPointF clipLeft( qreal m, const QPointF & point ) const;
48		inline QPointF clipBottom( qreal m, const QPointF & point ) const;
49		inline QPointF clipRight( qreal m, const QPointF & point ) const;
50
51
52		inline void clipMultiple( QPolygonF & clippedPolyObject,
53		QVector<QPolygonF> & clippedPolyObjects,
54		bool isClosed );
55		inline void clipOnce( QPolygonF & clippedPolyObject,
56		QVector<QPolygonF> & clippedPolyObjects,
57		bool isClosed );
58		inline void clipOnceCorner( QPolygonF & clippedPolyObject,
59		QVector<QPolygonF> & clippedPolyObjects,
60		const QPointF& corner,
61		const QPointF& point,
62		bool isClosed ) const;
63		inline void clipOnceEdge( QPolygonF & clippedPolyObject,
64		QVector<QPolygonF> & clippedPolyObjects,
65		const QPointF& point,
66		bool isClosed ) const;
67
68		static inline qreal _m( const QPointF & start, const QPointF & end );
69
70
71		qreal m_left;
72		qreal m_right;
73		qreal m_top;
74		qreal m_bottom;
75
76		int m_currentSector;
77		int m_previousSector;
78
79		QPointF m_currentPoint;
80		QPointF m_previousPoint;
81		};
82
83		#endif // BASECLIPPER_H