Stellarium 0.13.0
Landscape.hpp
1 /*
2  * Stellarium
3  * Copyright (C) 2003 Fabien Chereau
4  *
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13  * GNU General Public License for more details.
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18  */
19 
20 #ifndef _LANDSCAPE_HPP_
21 #define _LANDSCAPE_HPP_
22 
23 #include "VecMath.hpp"
24 #include "StelToneReproducer.hpp"
25 #include "StelProjector.hpp"
26 
27 #include "StelFader.hpp"
28 #include "StelUtils.hpp"
29 #include "StelTextureTypes.hpp"
30 #include "StelLocation.hpp"
31 
32 #include <QMap>
33 #include <QImage>
34 
35 class QSettings;
36 class StelLocation;
37 class StelCore;
38 class StelPainter;
39 
60 class Landscape
61 {
62 public:
63  Landscape(float _radius = 2.f);
64  virtual ~Landscape();
68  virtual void load(const QSettings& landscapeIni, const QString& landscapeId) = 0;
69  virtual void draw(StelCore* core) = 0;
70  void update(double deltaTime)
71  {
72  landFader.update((int)(deltaTime*1000));
73  fogFader.update((int)(deltaTime*1000));
74  }
75 
78  void setBrightness(const float b, const float pollutionBrightness=0.0f) {landscapeBrightness = b; lightScapeBrightness=pollutionBrightness; }
79 
81  void setFlagShow(const bool b) {landFader=b;}
83  bool getFlagShow() const {return (bool)landFader;}
85  void setFlagShowFog(const bool b) {fogFader=b;}
87  bool getFlagShowFog() const {return (bool)fogFader;}
89  QString getName() const {return name;}
91  QString getAuthorName() const {return author;}
93  QString getDescription() const {return description;}
94 
96  const StelLocation& getLocation() const {return location;}
98  bool hasLocation() const {return (location.planetName.length() > 0);}
113 
120  void setZRotation(float d) {angleRotateZOffset = d * M_PI/180.0f;}
121 
123  bool getIsFullyVisible() const {return landFader.getInterstate() >= 0.999f;}
124 
125  // GZ: NEW FUNCTION:
128  virtual float getOpacity(Vec3d azalt) const {return (azalt[2]<0 ? 1.0f : 0.0f); }
131  azDeg_altDeg = 0,
137  };
138 
139 protected:
143  void loadCommon(const QSettings& landscapeIni, const QString& landscapeId);
148  void createPolygonalHorizon(const QString& lineFileName, const float polyAngleRotateZ=0.0f, const QString &listMode="azDeg_altDeg");
149 
154  const QString getTexturePath(const QString& basename, const QString& landscapeId) const;
155  float radius;
156  QString name;
157  QString author;
158  QString description;
159  //float nightBrightness;
166  int rows;
167  int cols;
168  float angleRotateZ;
170 
178 
179  // Optional elements which, if present, describe a horizon polygon. They can be used to render a line or a filled region, esp. in LandscapePolygonal
184 };
186 
201 {
202 public:
203  LandscapeOldStyle(float radius = 2.f);
204  virtual ~LandscapeOldStyle();
205  virtual void load(const QSettings& landscapeIni, const QString& landscapeId);
206  virtual void draw(StelCore* core);
207  //void create(bool _fullpath, QMap<QString, QString> param); // still not implemented
208  virtual float getOpacity(Vec3d azalt) const;
209 protected:
210  typedef struct
211  {
212  StelTextureSP tex;
213  float texCoords[4];
215 
216 private:
217  void drawFog(StelCore* core, StelPainter&) const;
218  void drawDecor(StelCore* core, StelPainter&) const;
219  void drawGround(StelCore* core, StelPainter&) const;
220  QVector<double> groundVertexArr;
221  QVector<float> groundTexCoordArr;
222  StelTextureSP* sideTexs;
223  int nbSideTexs;
224  int nbSide;
225  landscapeTexCoord* sides;
226  StelTextureSP fogTex;
227  //landscapeTexCoord fogTexCoord; // GZ: UNUSED!
228  StelTextureSP groundTex;
229  QVector<QImage*> sidesImages; // GZ: Required for opacity lookup
230  //landscapeTexCoord groundTexCoord; // GZ: UNUSED!
231  int nbDecorRepeat;
232  float fogAltAngle;
233  float fogAngleShift;
234  float decorAltAngle; // vertical extent of the side panels
235  float decorAngleShift;
236  float groundAngleShift;
237  float groundAngleRotateZ;
238  int drawGroundFirst;
239  bool tanMode; // Whether the angles should be converted using tan instead of sin, i.e., for a cylindrical pano
240  bool calibrated; // if true, the documented altitudes are indeed correct (the original code is buggy!)
241  struct LOSSide
242  {
243  StelVertexArray arr;
244  StelTextureSP tex;
245  };
246 
247  QList<LOSSide> precomputedSides;
248 };
249 
260 {
261 public:
262  LandscapePolygonal(float radius = 1.f);
263  virtual ~LandscapePolygonal();
264  virtual void load(const QSettings& landscapeIni, const QString& landscapeId);
265  virtual void draw(StelCore* core);
266  virtual float getOpacity(Vec3d azalt) const;
267 private:
268  // we have inherited: horizonFileName, horizonPolygon, horizonPolygonLineColor
269  Vec3f groundColor;
270 };
271 
279 {
280 public:
281  LandscapeFisheye(float radius = 1.f);
282  virtual ~LandscapeFisheye();
283  virtual void load(const QSettings& landscapeIni, const QString& landscapeId);
284  virtual void draw(StelCore* core);
287  virtual float getOpacity(Vec3d azalt) const;
294  void create(const QString name, const QString& maptex, float texturefov, float angleRotateZ);
295  void create(const QString name, float texturefov, const QString& maptex, const QString &_maptexFog="", const QString& _maptexIllum="", const float angleRotateZ=0.0f);
296 private:
297 
298  StelTextureSP mapTex;
299  StelTextureSP mapTexFog;
300  StelTextureSP mapTexIllum;
302  QImage *mapImage;
304 
305  float texFov;
306 };
307 
319 {
320 public:
321  LandscapeSpherical(float radius = 1.f);
322  virtual ~LandscapeSpherical();
323  virtual void load(const QSettings& landscapeIni, const QString& landscapeId);
324  virtual void draw(StelCore* core);
328  virtual float getOpacity(Vec3d azalt) const;
340  void create(const QString name, const QString& maptex, const QString &_maptexFog="", const QString& _maptexIllum="", const float _angleRotateZ=0.0f,
341  const float _mapTexTop=90.0f, const float _mapTexBottom=-90.0f,
342  const float _fogTexTop=90.0f, const float _fogTexBottom=-90.0f,
343  const float _illumTexTop=90.0f, const float _illumTexBottom=-90.0f);
344 private:
345 
346  StelTextureSP mapTex;
347  StelTextureSP mapTexFog;
348  StelTextureSP mapTexIllum;
350  // These vars are here to conserve texture memory. They must be allowed to be different: a landscape may have its highest elevations at 15°, fog may reach from -25 to +15°,
352  // light pollution may cover -5° (street lamps slightly below) plus parts of or even the whole sky. All have default values to simplify life.
353  float mapTexTop;
354  float mapTexBottom;
355  float fogTexTop;
356  float fogTexBottom;
357  float illumTexTop;
358  float illumTexBottom;
359  QImage *mapImage;
360 };
361 
362 #endif // _LANDSCAPE_HPP_
float getDefaultAtmosphericExtinction() const
Return default atmosperic extinction [mag/airmass], or -1 (no change)
Definition: Landscape.hpp:104
int rows
Used to slowly fade in/out fog painting.
Definition: Landscape.hpp:166
bool getFlagShow() const
Get whether landscape is displayed (does not concern fog)
Definition: Landscape.hpp:83
Store the informations for a location on a planet.
virtual float getOpacity(Vec3d azalt) const
Sample landscape texture for transparency/opacity.
int defaultBortleIndex
OPTIONAL. If present, can be used to set location.
Definition: Landscape.hpp:173
float minBrightness
Read from landscape.ini:[landscape]description.
Definition: Landscape.hpp:160
Store and manages the displaying of the Landscape.
Definition: Landscape.hpp:60
int defaultFogSetting
May be given in landscape.ini:[location]light_pollution. Default: -1 (no change). ...
Definition: Landscape.hpp:174
Implementation of StelFader which implements a linear transition.
Definition: StelFader.hpp:79
int getDefaultBortleIndex() const
Return default Bortle index (light pollution value) or -1 (unknown/no change)
Definition: Landscape.hpp:100
virtual void load(const QSettings &landscapeIni, const QString &landscapeId)
Load landscape.
virtual float getOpacity(Vec3d azalt) const
can be used to find sunrise or visibility questions on the real-world landscape horizon.
float defaultExtinctionCoefficient
May be given in landscape.ini:[location]display_fog: -1(no change), 0(off), 1(on). Default: -1.
Definition: Landscape.hpp:175
QString description
Read from landscape.ini:[landscape]author.
Definition: Landscape.hpp:158
A shared pointer on a SphericalRegion.
Define the StelTextureSP type.
void setFlagShow(const bool b)
Set whether landscape is displayed (does not concern fog)
Definition: Landscape.hpp:81
This was the original landscape, introduced for decorative purposes.
Definition: Landscape.hpp:200
This uses a single image in fisheye projection.
Definition: Landscape.hpp:278
int cols
horizontal rows. May be given in landscape.ini:[landscape]tesselate_rows. More indicates higher accur...
Definition: Landscape.hpp:167
QString author
Read from landscape.ini:[landscape]name.
Definition: Landscape.hpp:157
virtual void load(const QSettings &landscapeIni, const QString &landscapeId)
Load landscape.
azimuth[degrees] altitude[degrees]
Definition: Landscape.hpp:132
Main class for Stellarium core processing.
Definition: StelCore.hpp:46
void create(const QString name, const QString &maptex, float texturefov, float angleRotateZ)
create a fisheye landscape from basic parameters (no ini file needed).
void loadCommon(const QSettings &landscapeIni, const QString &landscapeId)
Load attributes common to all landscapes.
Vec3f horizonPolygonLineColor
Optional element describing the horizon line.
Definition: Landscape.hpp:183
void create(const QString name, const QString &maptex, const QString &_maptexFog="", const QString &_maptexIllum="", const float _angleRotateZ=0.0f, const float _mapTexTop=90.0f, const float _mapTexBottom=-90.0f, const float _fogTexTop=90.0f, const float _fogTexBottom=-90.0f, const float _illumTexTop=90.0f, const float _illumTexBottom=-90.0f)
create a spherical landscape from basic parameters (no ini file needed).
azimuth[radians] altitude[radians]
Definition: Landscape.hpp:134
QString getDescription() const
Get landscape description.
Definition: Landscape.hpp:93
float defaultTemperature
May be given in landscape.ini:[location]atmospheric_extinction_coefficient. Default -1 (no change)...
Definition: Landscape.hpp:176
LinearFader fogFader
Used to slowly fade in/out landscape painting.
Definition: Landscape.hpp:165
float getDefaultAtmosphericTemperature() const
Return configured atmospheric temperature [degrees Celsius], for refraction computation, or -1000 for "unknown/no change".
Definition: Landscape.hpp:106
float landscapeBrightness
Read from landscape.ini:[landscape]minimal_brightness. Allows minimum visibility that cannot be under...
Definition: Landscape.hpp:161
bool hasLocation() const
Return if the location is valid (a valid location has a valid planetName!)
Definition: Landscape.hpp:98
QString planetName
English planet name.
bool getIsFullyVisible() const
Get whether the landscape is currently fully visible (i.e. opaque).
Definition: Landscape.hpp:123
float lightScapeBrightness
brightness [0..1] to draw the landscape. Computed by the LandscapeMgr.
Definition: Landscape.hpp:162
This uses a single panorama image in spherical (equirectangular) projection.
Definition: Landscape.hpp:318
Provides functions for performing openGL drawing operations.
Definition: StelPainter.hpp:40
virtual float getOpacity(Vec3d azalt) const
can be used to find sunrise or visibility questions on the real-world landscape horizon.
virtual void load(const QSettings &landscapeIni, const QString &landscapeId)=0
Load landscape.
float getLandscapeMinimalBrightness() const
Return minimal brightness for landscape returns -1 to signal "standard conditions" (use default value...
Definition: Landscape.hpp:112
float angleRotateZOffset
[radians] if pano does not have its left border in the east, rotate in azimuth. Configured in landsca...
Definition: Landscape.hpp:169
QString getName() const
Get landscape name.
Definition: Landscape.hpp:89
LinearFader landFader
was a landscape loaded properly?
Definition: Landscape.hpp:164
int getDefaultFogSetting() const
Return default fog setting (0/1) or -1 (no change)
Definition: Landscape.hpp:102
virtual void load(const QSettings &landscapeIni, const QString &landscapeId)
Load landscape.
SphericalRegionP horizonPolygon
[mbar] May be given in landscape.ini:[location]atmospheric_pressure. Default -1.0 (compute from [loca...
Definition: Landscape.hpp:180
azimuth[degrees] zenithDistance[degrees]
Definition: Landscape.hpp:133
This uses the list of (usually measured) horizon altitudes to define the horizon. ...
Definition: Landscape.hpp:259
azimuth[new_degrees] altitude[new_degrees] (may be found on theodolites)
Definition: Landscape.hpp:136
float defaultPressure
[Celsius] May be given in landscape.ini:[location]atmospheric_temperature. default: -1000...
Definition: Landscape.hpp:177
virtual void load(const QSettings &landscapeIni, const QString &landscapeId)
Load landscape.
virtual float getOpacity(Vec3d azalt) const
Sample landscape texture for transparency/opacity.
azimuth[radians] zenithDistance[radians]
Definition: Landscape.hpp:135
virtual float getOpacity(Vec3d azalt) const
can be used to find sunrise or visibility questions on the real-world landscape horizon.
Definition: Landscape.hpp:128
bool getFlagShowFog() const
Get whether fog is displayed.
Definition: Landscape.hpp:87
void setFlagShowFog(const bool b)
Set whether fog is displayed.
Definition: Landscape.hpp:85
const QString getTexturePath(const QString &basename, const QString &landscapeId) const
search for a texture in landscape directory, else global textures directory
void setZRotation(float d)
Set an additional z-axis (azimuth) rotation after landscape has been loaded.
Definition: Landscape.hpp:120
QSharedPointer< StelTexture > StelTextureSP
Use shared pointer to simplify memory managment.
float getDefaultAtmosphericPressure() const
Return configured atmospheric pressure [mbar], for refraction computation.
Definition: Landscape.hpp:109
void setBrightness(const float b, const float pollutionBrightness=0.0f)
Set the brightness of the landscape plus brightness of optional add-on night lightscape.
Definition: Landscape.hpp:78
const StelLocation & getLocation() const
Return the associated location (may be empty!)
Definition: Landscape.hpp:96
StelLocation location
[radians] This is a rotation changeable at runtime via setZRotation (called by LandscapeMgr::setZRota...
Definition: Landscape.hpp:172
bool validLandscape
can be used to draw nightscape texture (e.g. city light pollution), if available. Computed by the Lan...
Definition: Landscape.hpp:163
QString getAuthorName() const
Get landscape author name.
Definition: Landscape.hpp:91
void createPolygonalHorizon(const QString &lineFileName, const float polyAngleRotateZ=0.0f, const QString &listMode="azDeg_altDeg")
Create a StelSphericalPolygon that describes a measured horizon line.
float angleRotateZ
vertical columns. May be given in landscape.ini:[landscape]tesselate_cols. More indicates higher accu...
Definition: Landscape.hpp:168
horizonListMode
The list of azimuths and altitudes can come in various formats. We read the first two elements...
Definition: Landscape.hpp:130