File indexing completed on 2024-05-05 03:49:52
0001 // SPDX-License-Identifier: LGPL-2.1-or-later 0002 // 0003 // SPDX-FileCopyrightText: 2009 Patrick Spendrin <ps_ml@gmx.de> 0004 // SPDX-FileCopyrightText: 2012 Cezar Mocan <mocancezar@gmail.com> 0005 // 0006 0007 #ifndef MARBLE_CYLINDRICALPROJECTIONPRIVATE_H 0008 #define MARBLE_CYLINDRICALPROJECTIONPRIVATE_H 0009 0010 #include "AbstractProjection_p.h" 0011 0012 0013 namespace Marble 0014 { 0015 0016 class CylindricalProjection; 0017 0018 class CylindricalProjectionPrivate : public AbstractProjectionPrivate 0019 { 0020 public: 0021 explicit CylindricalProjectionPrivate( CylindricalProjection * parent ); 0022 0023 // This method tessellates a line segment in a way that the line segment 0024 // follows great circles. The count parameter specifies the 0025 // number of nodes generated for the polygon. If the 0026 // clampToGround flag is added the polygon contains count + 2 0027 // nodes as the clamped down start and end node get added. 0028 0029 int tessellateLineSegment( const GeoDataCoordinates &aCoords, 0030 qreal ax, qreal ay, 0031 const GeoDataCoordinates &bCoords, 0032 qreal bx, qreal by, 0033 QVector<QPolygonF*> &polygons, 0034 const ViewportParams *viewport, 0035 TessellationFlags f = TessellationFlags(), 0036 int mirrorCount = 0, 0037 qreal repeatDistance = 0 ) const; 0038 0039 int processTessellation( const GeoDataCoordinates &previousCoords, 0040 const GeoDataCoordinates ¤tCoords, 0041 int count, 0042 QVector<QPolygonF*> &polygons, 0043 const ViewportParams *viewport, 0044 TessellationFlags f = TessellationFlags(), 0045 int mirrorCount = 0, 0046 qreal repeatDistance = 0 ) const; 0047 0048 static int crossDateLine( const GeoDataCoordinates & aCoord, 0049 const GeoDataCoordinates & bCoord, 0050 qreal bx, 0051 qreal by, 0052 QVector<QPolygonF*> &polygons, 0053 int mirrorCount = 0, 0054 qreal repeatDistance = 0 ); 0055 0056 bool lineStringToPolygon( const GeoDataLineString &lineString, 0057 const ViewportParams *viewport, 0058 QVector<QPolygonF*> &polygons ) const; 0059 0060 static void translatePolygons( const QVector<QPolygonF *> &polygons, 0061 QVector<QPolygonF *> &translatedPolygons, 0062 qreal xOffset ); 0063 0064 void repeatPolygons( const ViewportParams *viewport, 0065 QVector<QPolygonF *> &polygons ) const; 0066 0067 qreal repeatDistance( const ViewportParams *viewport ) const; 0068 0069 CylindricalProjection * const q_ptr; 0070 Q_DECLARE_PUBLIC( CylindricalProjection ) 0071 }; 0072 0073 } // namespace Marble 0074 0075 #endif