Marble

VerticalPerspectiveProjection.h
1 // SPDX-License-Identifier: LGPL-2.1-or-later
2 //
3 // SPDX-FileCopyrightText: 2013 Bernhard Beschow <[email protected]>
4 //
5 
6 
7 #ifndef MARBLE_VERTICALPERSPECTIVEPROJECTION_H
8 #define MARBLE_VERTICALPERSPECTIVEPROJECTION_H
9 
10 
11 #include "AbstractProjection.h"
12 #include "AzimuthalProjection.h"
13 
14 namespace Marble
15 {
16 
17 class VerticalPerspectiveProjectionPrivate;
18 
19 /**
20  * @short A class to implement the spherical projection used by the "Globe" view.
21  */
22 
24 {
25  // Not a QObject so far because we don't need to send signals.
26  public:
27 
28  /**
29  * @brief Construct a new VerticalPerspectiveProjection.
30  */
32 
34 
35  /**
36  * @brief Returns the user-visible name of the projection.
37  */
38  QString name() const override;
39 
40  /**
41  * @brief Returns a short user description of the projection
42  * that can be used in tooltips or dialogs.
43  */
44  QString description() const override;
45 
46  /**
47  * @brief Returns an icon for the projection.
48  */
49  QIcon icon() const override;
50 
51  qreal clippingRadius() const override;
52 
53  /**
54  * @brief Get the screen coordinates corresponding to geographical coordinates in the map.
55  * @param coordinates the coordinates of the requested pixel position
56  * @param params the viewport parameters
57  * @param x the x coordinate of the pixel is returned through this parameter
58  * @param y the y coordinate of the pixel is returned through this parameter
59  * @param globeHidesPoint whether the globe hides the point
60  * @return @c true if the geographical coordinates are visible on the screen
61  * @c false if the geographical coordinates are not visible on the screen
62  */
63  bool screenCoordinates( const GeoDataCoordinates &coordinates,
64  const ViewportParams *params,
65  qreal &x, qreal &y, bool &globeHidesPoint ) const override;
66 
67  bool screenCoordinates( const GeoDataCoordinates &coordinates,
68  const ViewportParams * viewport,
69  qreal *x, qreal &y, int &pointRepeatNum,
70  const QSizeF& size,
71  bool &globeHidesPoint ) const override;
72 
74 
75  /**
76  * @brief Get the earth coordinates corresponding to a pixel in the map.
77  * @param x the x coordinate of the pixel
78  * @param y the y coordinate of the pixel
79  * @param params the viewport parameters
80  * @param lon the longitude angle is returned through this parameter
81  * @param lat the latitude angle is returned through this parameter
82  * @param unit the unit
83  * @return @c true if the pixel (x, y) is within the globe
84  * @c false if the pixel (x, y) is outside the globe, i.e. in space.
85  */
86  bool geoCoordinates( const int x, const int y,
87  const ViewportParams *params,
88  qreal& lon, qreal& lat,
89  GeoDataCoordinates::Unit unit = GeoDataCoordinates::Degree ) const override;
90 
91  protected:
92  explicit VerticalPerspectiveProjection(VerticalPerspectiveProjectionPrivate *dd );
93 
94  private:
95  Q_DECLARE_PRIVATE(VerticalPerspectiveProjection)
96  Q_DISABLE_COPY( VerticalPerspectiveProjection )
97 };
98 
99 }
100 
101 #endif
A 3d point representation.
QString name() const override
Returns the user-visible name of the projection.
bool geoCoordinates(const int x, const int y, const ViewportParams *params, qreal &lon, qreal &lat, GeoDataCoordinates::Unit unit=GeoDataCoordinates::Degree) const override
Get the earth coordinates corresponding to a pixel in the map.
A class to implement the spherical projection used by the "Globe" view.
A base class for the Gnomonic and Orthographic (Globe) projections in Marble.
bool screenCoordinates(const GeoDataCoordinates &coordinates, const ViewportParams *params, qreal &x, qreal &y, bool &globeHidesPoint) const override
Get the screen coordinates corresponding to geographical coordinates in the map.
A public class that controls what is visible in the viewport of a Marble map.
Binds a QML item to a specific geodetic location in screen coordinates.
bool screenCoordinates(const qreal lon, const qreal lat, const ViewportParams *viewport, qreal &x, qreal &y) const
Get the screen coordinates corresponding to geographical coordinates in the map.
Unit
enum used constructor to specify the units used
QIcon icon() const override
Returns an icon for the projection.
VerticalPerspectiveProjection()
Construct a new VerticalPerspectiveProjection.
QString description() const override
Returns a short user description of the projection that can be used in tooltips or dialogs.
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