Marble::AzimuthalProjection Class Reference

#include <AzimuthalProjection.h>

Inheritance diagram for Marble::AzimuthalProjection:

Public Member Functions
qreal	clippingRadius () const override
bool	isClippedToSphere () const override
GeoDataLatLonAltBox	latLonAltBox (const QRect &screenRect, const ViewportParams *viewport) const override
bool	mapCoversViewport (const ViewportParams *viewport) const override
QPainterPath	mapShape (const ViewportParams *viewport) const override
PreservationType	preservationType () const override
bool	repeatableX () const override
virtual bool	screenCoordinates (const GeoDataCoordinates &coordinates, const ViewportParams *viewport, qreal *x, qreal &y, int &pointRepeatNum, const QSizeF &size, bool &globeHidesPoint) const=0
bool	screenCoordinates (const GeoDataCoordinates &geopoint, const ViewportParams *viewport, qreal &x, qreal &y) const
virtual bool	screenCoordinates (const GeoDataCoordinates &geopoint, const ViewportParams *viewport, qreal &x, qreal &y, bool &globeHidesPoint) const=0
bool	screenCoordinates (const GeoDataLineString &lineString, const ViewportParams *viewport, QList< QPolygonF * > &polygons) const override
bool	screenCoordinates (const qreal lon, const qreal lat, const ViewportParams *viewport, qreal &x, qreal &y) const
SurfaceType	surfaceType () const override
bool	traversableDateLine () const override
bool	traversablePoles () const override
Public Member Functions inherited from Marble::AbstractProjection
	AbstractProjection ()
virtual QString	description () const =0
virtual bool	geoCoordinates (const int x, const int y, const ViewportParams *viewport, qreal &lon, qreal &lat, GeoDataCoordinates::Unit unit=GeoDataCoordinates::Degree) const =0
virtual QIcon	icon () const =0
virtual bool	isOrientedNormal () const
QRegion	mapRegion (const ViewportParams *viewport) const
qreal	maxLat () const
virtual qreal	maxValidLat () const
qreal	minLat () const
virtual qreal	minValidLat () const
virtual QString	name () const =0
bool	screenCoordinates (const GeoDataCoordinates &geopoint, const ViewportParams *viewport, qreal &x, qreal &y) const
bool	screenCoordinates (const qreal lon, const qreal lat, const ViewportParams *viewport, qreal &x, qreal &y) const
void	setMaxLat (qreal maxLat)
void	setMinLat (qreal minLat)

Protected Member Functions
	AzimuthalProjection (AzimuthalProjectionPrivate *dd)
Protected Member Functions inherited from Marble::AbstractProjection
	AbstractProjection (AbstractProjectionPrivate *dd)

Additional Inherited Members
Public Types inherited from Marble::AbstractProjection
enum	PreservationType { NoPreservation , Conformal , EqualArea }
enum	SurfaceType {   Cylindrical , Pseudocylindrical , Hybrid , Conical ,   Pseudoconical , Azimuthal }
Protected Attributes inherited from Marble::AbstractProjection
const QScopedPointer< AbstractProjectionPrivate >	d_ptr

Detailed Description

A base class for the Gnomonic and Orthographic (Globe) projections in Marble.

Definition at line 25 of file AzimuthalProjection.h.

Constructor & Destructor Documentation

AzimuthalProjection()

Marble::AzimuthalProjection::AzimuthalProjection ( AzimuthalProjectionPrivate * dd )

explicitprotected

Definition at line 148 of file AzimuthalProjection.cpp.

Member Function Documentation

clippingRadius()

qreal Marble::AzimuthalProjection::clippingRadius ( ) const

overridevirtual

Reimplemented from Marble::AbstractProjection.

Definition at line 28 of file AzimuthalProjection.cpp.

isClippedToSphere()

bool Marble::AzimuthalProjection::isClippedToSphere ( ) const

overridevirtual

Defines whether a projection is supposed to be clipped to a certain radius.

Example: The Gnomonic projection is clipped to a circle of a certain clipping radius (although it's mathematically defined beyond that radius).

Reimplemented from Marble::AbstractProjection.

Definition at line 23 of file AzimuthalProjection.cpp.

latLonAltBox()

GeoDataLatLonAltBox Marble::AzimuthalProjection::latLonAltBox ( const QRect & screenRect, const ViewportParams * viewport ) const

overridevirtual

Returns a GeoDataLatLonAltBox bounding box of the given screenrect inside the given viewport.

Reimplemented from Marble::AbstractProjection.

Definition at line 66 of file AzimuthalProjection.cpp.

mapCoversViewport()

bool Marble::AzimuthalProjection::mapCoversViewport ( const ViewportParams * viewport ) const

overridevirtual

Returns whether the projected data fully obstructs the current viewport.

In this case there are no black areas visible around the actual map. This case allows for performance optimizations.

Implements Marble::AbstractProjection.

Definition at line 47 of file AzimuthalProjection.cpp.

mapShape()

QPainterPath Marble::AzimuthalProjection::mapShape ( const ViewportParams * viewport ) const

overridevirtual

Returns the shape/outline of a map projection.

This call allows e.g. to draw the default background color of the map itself.

Example: For an azimuthal projection a circle is returned at low zoom values.

Implements Marble::AbstractProjection.

Definition at line 126 of file AzimuthalProjection.cpp.

preservationType()

PreservationType Marble::AzimuthalProjection::preservationType ( ) const

inlineoverridevirtual

Reimplemented from Marble::AbstractProjection.

Definition at line 52 of file AzimuthalProjection.h.

repeatableX()

bool Marble::AzimuthalProjection::repeatableX ( ) const

inlineoverridevirtual

Returns whether the projection allows for wrapping in x direction (along the longitude scale).

Example: Cylindrical projections allow for repeating.

Reimplemented from Marble::AbstractProjection.

Definition at line 33 of file AzimuthalProjection.h.

screenCoordinates() [1/5]

virtual bool Marble::AbstractProjection::screenCoordinates ( const GeoDataCoordinates & coordinates, const ViewportParams * viewport, qreal * x, qreal & y, int & pointRepeatNum, const QSizeF & size, bool & globeHidesPoint ) const

virtual

Get the coordinates of screen points for geographical coordinates in the map.

Parameters

coordinates	the point on earth, including altitude, that we want the coordinates for.
viewport	the viewport parameters
x	the x coordinates of the pixels are returned through this parameter
y	the y coordinate of the pixel is returned through this parameter
pointRepeatNum	the amount of times that a single geographical point gets represented on the map
size	the size
globeHidesPoint	whether the point gets hidden on the far side of the earth

Returns

true if the geographical coordinates are visible on the screen false if the geographical coordinates are not visible on the screen

See also

ViewportParams

Implements Marble::AbstractProjection.

Reimplemented in Marble::GnomonicProjection, Marble::LambertAzimuthalProjection, Marble::SphericalProjection, Marble::StereographicProjection, and Marble::VerticalPerspectiveProjection.

screenCoordinates() [2/5]

bool AbstractProjection::screenCoordinates	(	const GeoDataCoordinates &	geopoint,
		const ViewportParams *	viewport,
		qreal &	x,
		qreal &	y ) const

Definition at line 187 of file AbstractProjection.cpp.

screenCoordinates() [3/5]

virtual bool Marble::AbstractProjection::screenCoordinates ( const GeoDataCoordinates & geopoint, const ViewportParams * viewport, qreal & x, qreal & y, bool & globeHidesPoint ) const

virtual

Get the screen coordinates corresponding to geographical coordinates in the map.

Parameters

geopoint	the point on earth, including altitude, that we want the coordinates for.
viewport	the viewport parameters
x	the x coordinate of the pixel is returned through this parameter
y	the y coordinate of the pixel is returned through this parameter
globeHidesPoint	whether the point gets hidden on the far side of the earth

Returns

true if the geographical coordinates are visible on the screen false if the geographical coordinates are not visible on the screen

See also

ViewportParams

Implements Marble::AbstractProjection.

Reimplemented in Marble::GnomonicProjection, Marble::LambertAzimuthalProjection, Marble::SphericalProjection, Marble::StereographicProjection, and Marble::VerticalPerspectiveProjection.

screenCoordinates() [4/5]

bool Marble::AzimuthalProjection::screenCoordinates ( const GeoDataLineString & lineString, const ViewportParams * viewport, QList< QPolygonF * > & polygons ) const

overridevirtual

Implements Marble::AbstractProjection.

Definition at line 33 of file AzimuthalProjection.cpp.

screenCoordinates() [5/5]

bool AbstractProjection::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.

Parameters

lon	the lon coordinate of the requested pixel position in radians
lat	the lat coordinate of the requested pixel position in radians
viewport	the viewport parameters
x	the x coordinate of the pixel is returned through this parameter
y	the y coordinate of the pixel is returned through this parameter

Returns

true if the geographical coordinates are visible on the screen false if the geographical coordinates are not visible on the screen

See also

ViewportParams

Definition at line 168 of file AbstractProjection.cpp.

surfaceType()

SurfaceType Marble::AzimuthalProjection::surfaceType ( ) const

inlineoverridevirtual

Implements Marble::AbstractProjection.

Definition at line 47 of file AzimuthalProjection.h.

traversableDateLine()

bool Marble::AzimuthalProjection::traversableDateLine ( ) const

inlineoverridevirtual

Reimplemented from Marble::AbstractProjection.

Definition at line 42 of file AzimuthalProjection.h.

traversablePoles()

bool Marble::AzimuthalProjection::traversablePoles ( ) const

inlineoverridevirtual

Returns whether the projection allows to navigate seamlessly "over" the pole.

Example: Azimuthal projections.

Reimplemented from Marble::AbstractProjection.

Definition at line 38 of file AzimuthalProjection.h.

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The documentation for this class was generated from the following files:

• AzimuthalProjection.h
• AzimuthalProjection.cpp