Kstars

equirectangularprojector.h
1 /*
2  SPDX-FileCopyrightText: 2010 Henry de Valence <[email protected]>
3 
4  SPDX-License-Identifier: GPL-2.0-or-later
5 */
6 
7 #ifndef EQUIRECTANGULARPROJECTOR_H
8 #define EQUIRECTANGULARPROJECTOR_H
9 
10 #include "projector.h"
11 
12 /**
13  * @class EquirectangularProjector
14  *
15  * Implememntation of <a href="https://en.wikipedia.org/wiki/Equirectangular_projection">Equirectangular projection</a>
16  *
17  */
19 {
20  public:
21  explicit EquirectangularProjector(const ViewParams &p);
22  Projection type() const override;
23  double radius() const override;
24  bool unusablePoint(const QPointF &p) const override;
25  Eigen::Vector2f toScreenVec(const SkyPoint *o, bool oRefract = true, bool *onVisibleHemisphere = nullptr) const override;
26  SkyPoint fromScreen(const QPointF &p, dms *LST, const dms *lat, bool onlyAltAz = false) const override;
27  QVector<Eigen::Vector2f> groundPoly(SkyPoint *labelpoint = nullptr, bool *drawLabel = nullptr) const override;
28  void updateClipPoly() override;
29 };
30 
31 #endif // EQUIRECTANGULARPROJECTOR_H
Eigen::Vector2f toScreenVec(const SkyPoint *o, bool oRefract=true, bool *onVisibleHemisphere=nullptr) const override
Given the coordinates of the SkyPoint argument, determine the pixel coordinates in the SkyMap.
Stores dms coordinates for a point in the sky. for converting between coordinate systems.
Definition: skypoint.h:44
double radius() const override
Get the radius of this projection's sky circle.
bool unusablePoint(const QPointF &p) const override
Check if the current point on screen is a valid point on the sky.
Projection type() const override
Return the type of this projection.
This is just a container that holds information needed to do projections.
Definition: projector.h:36
SkyPoint fromScreen(const QPointF &p, dms *LST, const dms *lat, bool onlyAltAz=false) const override
Determine RA, Dec coordinates of the pixel at (dx, dy), which are the screen pixel coordinate offsets...
An angle, stored as degrees, but expressible in many ways.
Definition: dms.h:37
void updateClipPoly() override
updateClipPoly calculate the clipping polygen given the current FOV.
QVector< Eigen::Vector2f > groundPoly(SkyPoint *labelpoint=nullptr, bool *drawLabel=nullptr) const override
Get the ground polygon.
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