Marble::GeoDataLod

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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
 
GeoDataLodoperator= (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
 
GeoDataObjectoperator= (const GeoDataObject &)
 
void pack (QDataStream &stream) const override
 
GeoDataObjectparent ()
 
const GeoDataObjectparent () 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
 
- Public Member Functions inherited from Marble::GeoNode

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 37 of file GeoDataLod.h.

Constructor & Destructor Documentation

◆ GeoDataLod() [1/2]

Marble::GeoDataLod::GeoDataLod ( )

Creates a new Level of Detail object.

Definition at line 13 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 19 of file GeoDataLod.cpp.

◆ ~GeoDataLod()

Marble::GeoDataLod::~GeoDataLod ( )
override

Destroys a Level of Detail object.

Definition at line 25 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 76 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 56 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 66 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 46 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 41 of file GeoDataLod.cpp.

◆ operator!=()

bool Marble::GeoDataLod::operator!= ( const GeoDataLod & other) const

Definition at line 36 of file GeoDataLod.cpp.

◆ operator=()

GeoDataLod & Marble::GeoDataLod::operator= ( const GeoDataLod & other)

Definition at line 102 of file GeoDataLod.cpp.

◆ operator==()

bool Marble::GeoDataLod::operator== ( const GeoDataLod & other) const

Provides type information for downcasting a GeoNode.

Definition at line 30 of file GeoDataLod.cpp.

◆ pack()

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

Serialize the Lod to a stream.

Parameters
streamthe stream.

Definition at line 86 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 81 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 61 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 71 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 51 of file GeoDataLod.cpp.

◆ unpack()

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

Unserialize the Lod from a stream.

Parameters
streamthe stream.

Definition at line 94 of file GeoDataLod.cpp.

Member Data Documentation

◆ d

GeoDataLodPrivate* const Marble::GeoDataLod::d
protected

Definition at line 140 of file GeoDataLod.h.


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