This uses the list of (usually measured) horizon altitudes to define the horizon. More...

#include <Landscape.hpp>

Public Member Functions
	LandscapePolygonal (float radius=1.f)

virtual void	load (const QSettings &landscapeIni, const QString &landscapeId)
	Load landscape. More...

virtual unsigned int	getMemorySize () const
	Return approximate memory footprint in bytes (required for cache cost estimate in LandscapeMgr) The returned value is only approximate, content of QStrings and other small containers like the horizon polygon are not put in in detail. More...

virtual void	draw (StelCore *core)

virtual float	getOpacity (Vec3d azalt) const
	Find opacity in a certain direction. More...

Public Member Functions inherited from Landscape
	Landscape (float _radius=2.f)

void	update (double deltaTime)

void	setBrightness (const double b, const double pollutionBrightness=0.0)
	Set the brightness of the landscape plus brightness of optional add-on night lightscape. More...

double	getBrightness () const
	Returns the current brightness level.

double	getLightscapeBrightness () const
	Returns the lightscape brightness.

double	getTargetLightscapeBrightness () const
	Returns the lightscape brighness modulated with the fader's target state (i.e. binary on/off)

double	getEffectiveLightscapeBrightness () const
	Gets the currently effective lightscape brightness (modulated by the fader)

void	setFlagShow (const bool b)
	Set whether landscape is displayed (does not concern fog)

bool	getFlagShow () const
	Get whether landscape is displayed (does not concern fog)

float	getEffectiveLandFadeValue () const
	Returns the currently effective land fade value.

void	setFlagShowFog (const bool b)
	Set whether fog is displayed.

bool	getFlagShowFog () const
	Get whether fog is displayed.

void	setFlagShowIllumination (const bool b)
	Set whether illumination is displayed.

bool	getFlagShowIllumination () const
	Get whether illumination is displayed.

void	setFlagShowLabels (const bool b)
	Set whether labels are displayed.

bool	getFlagShowLabels () const
	Get whether labels are displayed.

void	setLabelFontSize (const int size)
	change font and fontsize for landscape labels

QString	getName () const
	Get landscape name.

QString	getAuthorName () const
	Get landscape author name.

QString	getDescription () const
	Get landscape description.

QString	getId () const
	Get landscape id. This is the landscape directory name, used for cache handling.

const StelLocation &	getLocation () const
	Return the associated location (may be empty!)

bool	hasLocation () const
	Return if the location is valid (a valid location has a valid planetName!)

int	getDefaultBortleIndex () const
	Return default Bortle index (light pollution value) or -1 (unknown/no change)

int	getDefaultFogSetting () const
	Return default fog setting (0/1) or -1 (no change)

double	getDefaultAtmosphericExtinction () const
	Return default atmosperic extinction [mag/airmass], or -1 (no change)

double	getDefaultAtmosphericTemperature () const
	Return configured atmospheric temperature [degrees Celsius], for refraction computation, or -1000 for "unknown/no change".

double	getDefaultAtmosphericPressure () const
	Return configured atmospheric pressure [mbar], for refraction computation. More...

double	getLandscapeMinimalBrightness () const
	Return minimal brightness for landscape returns -1 to signal "standard conditions" (use default value from config.ini)

void	setZRotation (float d)
	Set an additional z-axis (azimuth) rotation after landscape has been loaded. More...

bool	getIsFullyVisible () const
	Get whether the landscape is currently fully visible (i.e. opaque).

double	getSinMinAltitudeLimit () const
	Get the sine of the limiting altitude (can be used to short-cut drawing below horizon, like star fields). There is no set here, value is only from landscape.ini.

void	loadLabels (const QString &landscapeId)
	Load descriptive labels from optional file gazetteer.LANG.utf8.

Additional Inherited Members
Public Types inherited from Landscape
enum	horizonListMode { azDeg_altDeg = 0, azDeg_zdDeg = 1, azRad_altRad = 2, azRad_zdRad = 3, azGrad_altGrad = 4, azGrad_zdGrad = 5 }
	The list of azimuths (counted from True North towards East) and altitudes can come in various formats. We read the first two elements, which can be of formats: More...

Protected Member Functions inherited from Landscape
void	loadCommon (const QSettings &landscapeIni, const QString &landscapeId)
	Load attributes common to all landscapes. More...

void	drawLabels (StelCore core, StelPainter painter)
	Draw optional labels on the landscape.

void	createPolygonalHorizon (const QString &lineFileName, const float polyAngleRotateZ=0.0f, const QString &listMode="azDeg_altDeg", const bool polygonInverted=false)
	Create a StelSphericalPolygon that describes a measured horizon line. More...

Static Protected Member Functions inherited from Landscape
static const QString	getTexturePath (const QString &basename, const QString &landscapeId)
	search for a texture in landscape directory, else global textures directory More...

Protected Attributes inherited from Landscape
double	radius

QString	name

QString	author
	Read from landscape.ini:[landscape]name.

QString	description
	Read from landscape.ini:[landscape]author.

QString	id
	Read from landscape.ini:[landscape]description.

float	minBrightness
	Set during load. Required for consistent caching.

float	landscapeBrightness
	Read from landscape.ini:[landscape]minimal_brightness. Allows minimum visibility that cannot be underpowered.

float	lightScapeBrightness
	brightness [0..1] to draw the landscape. Computed by the LandscapeMgr.

bool	validLandscape
	can be used to draw nightscape texture (e.g. city light pollution), if available. Computed by the LandscapeMgr.

LinearFader	landFader
	was a landscape loaded properly?

LinearFader	fogFader
	Used to slowly fade in/out landscape painting.

LinearFader	illumFader
	Used to slowly fade in/out fog painting.

LinearFader	labelFader
	Used to slowly fade in/out illumination painting.

unsigned int	rows
	Used to slowly fade in/out landscape feature labels.

unsigned int	cols
	horizontal rows. May be given in landscape.ini:[landscape]tesselate_rows. More indicates higher accuracy, but is slower.

float	angleRotateZ
	vertical columns. May be given in landscape.ini:[landscape]tesselate_cols. More indicates higher accuracy, but is slower.

float	angleRotateZOffset
	[radians] if pano does not have its left border in the east, rotate in azimuth. Configured in landscape.ini[landscape]angle_rotatez (or decor_angle_rotatez for old_style landscapes)

double	sinMinAltitudeLimit
	[radians] This is a rotation changeable at runtime via setZRotation (called by LandscapeMgr::setZRotation). More...

StelLocation	location
	Minimal altitude of landscape cover. Can be used to construct bounding caps, so that e.g. no stars are drawn below this altitude. Default -0.035, i.e. sin(-2 degrees).

int	defaultBortleIndex
	OPTIONAL. If present, can be used to set location.

int	defaultFogSetting
	May be given in landscape.ini:[location]light_pollution. Default: -1 (no change).

double	defaultExtinctionCoefficient
	May be given in landscape.ini:[location]display_fog: -1(no change), 0(off), 1(on). Default: -1.

double	defaultTemperature
	May be given in landscape.ini:[location]atmospheric_extinction_coefficient. Default -1 (no change).

double	defaultPressure
	[Celsius] May be given in landscape.ini:[location]atmospheric_temperature. default: -1000.0 (no change)

SphericalRegionP	horizonPolygon
	[mbar] May be given in landscape.ini:[location]atmospheric_pressure. Default -1.0 (compute from [location]/altitude), use -2 to indicate "no change".

Vec3f	horizonPolygonLineColor
	Optional element describing the horizon line. More...

QList< LandscapeLabel >	landscapeLabels
	for all horizon types, the horizonPolygon line, if specified, will be drawn in this color More...

int	fontSize

Vec3f	labelColor
	Used for landscape labels (optionally indicating landscape features)

Detailed Description

Define it with the following names in landscape.ini:

Parameters

landscape/ground_color	use this color below horizon
landscape/polygonal_horizon_list	filename containing azimuths/altitudes, compatible with Carte du Ciel.
landscape/polygonal_angle_rotatez	offset for the polygonal measurement (different from landscape/angle_rotatez in photo panos, often photo and line are not aligned.)

Member Function Documentation

◆ getMemorySize()

virtual unsigned int LandscapePolygonal::getMemorySize ( ) const

inlinevirtual

However, texture image sizes must be computed in subclasses. The value returned is a sum of RAM and texture memory requirements.

Reimplemented from Landscape.

◆ getOpacity()

virtual float LandscapePolygonal::getOpacity ( Vec3d azalt ) const

virtual

(New in V0.13 series) can be used to find sunrise or visibility questions on the real-world landscape horizon. Default implementation indicates the horizon equals math horizon.

Reimplemented from Landscape.

◆ load()

virtual void LandscapePolygonal::load	(	const QSettings &	landscapeIni,
		const QString &	landscapeId
	)