Marble::GeoDataLod Class Reference

#include <GeoDataLod.h>

Inheritance diagram for Marble::GeoDataLod:

Public Member Functions
	GeoDataLod ()
	GeoDataLod (const GeoDataLod &other)
	~GeoDataLod () override
qreal	maxFadeExtent () const
qreal	maxLodPixels () const
qreal	minFadeExtent () const
qreal	minLodPixels () const
const char *	nodeType () const override
bool	operator!= (const GeoDataLod &other) const
GeoDataLod &	operator= (const GeoDataLod &other)
bool	operator== (const GeoDataLod &other) const
void	pack (QDataStream &stream) const override
void	setMaxFadeExtent (qreal pixels)
void	setMaxLodPixels (qreal pixels)
void	setMinFadeExtent (qreal pixels)
void	setMinLodPixels (qreal pixels)
void	unpack (QDataStream &stream) override
Public Member Functions inherited from Marble::GeoDataObject
	GeoDataObject (const GeoDataObject &)
QString	id () const
GeoDataObject &	operator= (const GeoDataObject &)
void	pack (QDataStream &stream) const override
GeoDataObject *	parent ()
const GeoDataObject *	parent () const
QString	resolvePath (const QString &relativePath) const
void	setId (const QString &value)
void	setParent (GeoDataObject *parent)
void	setTargetId (const QString &value)
QString	targetId () const
void	unpack (QDataStream &steam) override

Protected Attributes
GeoDataLodPrivate *const	d

Additional Inherited Members
Protected Member Functions inherited from Marble::GeoDataObject
virtual bool	equals (const GeoDataObject &other) const

Detailed Description

The level of detail which indicates visibility and importance.

GeoDataLod is a tool class that implements the Lod tag/class of the Open Geospatial Consortium standard KML 2.2.

"Lod" is an abbreviation for "Level of Detail" and refers to the extent of the region of a feature. In geodesic coordinates the size of the region can be described in terms of a LatLon(Alt)Box. Projected to screen coordinates the size of a region would naturally be measured in pixels. The size of such a region varies depending on the distance of the observer towards the feature.

The "Level of Detail" describes how many pixels a region needs to cover in order to be considered "active" and visible. It also describes how "quickly" the feature fades in and out.

Definition at line 39 of file GeoDataLod.h.

Constructor & Destructor Documentation

GeoDataLod() [1/2]

Marble::GeoDataLod::GeoDataLod

(

)

Creates a new Level of Detail object.

Definition at line 14 of file GeoDataLod.cpp.

GeoDataLod() [2/2]

Marble::GeoDataLod::GeoDataLod

(

const GeoDataLod &

other

)

Creates a new Level of Detail object as a copy of other.

Definition at line 20 of file GeoDataLod.cpp.

~GeoDataLod()

Marble::GeoDataLod::~GeoDataLod ( )

override

Destroys a Level of Detail object.

Definition at line 26 of file GeoDataLod.cpp.

Member Function Documentation

maxFadeExtent()

qreal Marble::GeoDataLod::maxFadeExtent

(

)

const

Returns how "quickly" the region fades when the region is near. Returns the distance (counted from maxLodPixels) over which the feature fades in or out.

Definition at line 87 of file GeoDataLod.cpp.

maxLodPixels()

qreal Marble::GeoDataLod::maxLodPixels

(

)

const

Returns the maximum size that is needed for the region to be active Returns the maximum number of pixels the region has to be projected on for the feature to be considered active. A value of -1 would mean no minimum number of pixels which is also the standard value.

Definition at line 63 of file GeoDataLod.cpp.

minFadeExtent()

qreal Marble::GeoDataLod::minFadeExtent

(

)

const

Returns how "quickly" the region fades when the region is far away. Returns the distance (counted from minLodPixels) over which the feature fades in or out.

Definition at line 75 of file GeoDataLod.cpp.

minLodPixels()

qreal Marble::GeoDataLod::minLodPixels

(

)

const

Returns the minimum size that is needed for the region to be active Returns the minimum number of pixels the region has to be projected on for the feature to be considered active. A value of 0 would mean no minimum number of pixels which is also the standard value.

Definition at line 51 of file GeoDataLod.cpp.

nodeType()

const char * Marble::GeoDataLod::nodeType ( ) const

overridevirtual

Provides type information for downcasting a GeoNode.

Implements Marble::GeoNode.

Definition at line 45 of file GeoDataLod.cpp.

operator==()

bool Marble::GeoDataLod::operator==

(

const GeoDataLod &

other

)

const

Provides type information for downcasting a GeoNode.

Definition at line 31 of file GeoDataLod.cpp.

pack()

void Marble::GeoDataLod::pack ( QDataStream &  stream ) const

override

Serialize the Lod to a stream.

Parameters

stream

the stream.

Definition at line 99 of file GeoDataLod.cpp.

setMaxFadeExtent()

void Marble::GeoDataLod::setMaxFadeExtent

(

qreal

pixels

)

Sets how "quickly" the region fades when the region is near. Sets the distance (counted from maxLodPixels) over which the feature fades in or out.

Definition at line 93 of file GeoDataLod.cpp.

setMaxLodPixels()

void Marble::GeoDataLod::setMaxLodPixels

(

qreal

pixels

)

Sets the maximum size that is needed for the region to be active Sets the maximum number of pixels the region has to be projected on for the feature to be considered active.

Definition at line 69 of file GeoDataLod.cpp.

setMinFadeExtent()

void Marble::GeoDataLod::setMinFadeExtent

(

qreal

pixels

)

Sets how "quickly" the region fades when the region is far away. Sets the distance (counted from minLodPixels) over which the feature fades in or out.

Definition at line 81 of file GeoDataLod.cpp.

setMinLodPixels()

void Marble::GeoDataLod::setMinLodPixels

(

qreal

pixels

)

Sets the minimum size that is needed for the region to be active Sets the minimum number of pixels the region has to be projected on for the feature to be considered active.

Definition at line 57 of file GeoDataLod.cpp.

unpack()

void Marble::GeoDataLod::unpack ( QDataStream &  stream )

override

Unserialize the Lod from a stream.

Parameters

stream

the stream.

Definition at line 107 of file GeoDataLod.cpp.

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

• GeoDataLod.h
• GeoDataLod.cpp