QgsPointLightSettings Class Reference

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#include <qgspointlightsettings.h>

Inheritance diagram for QgsPointLightSettings:

Public Member Functions
	QgsPointLightSettings ()=default
	Construct a point light with default values.
QgsPointLightSettings *	clone () const override
	Returns a copy of the light source.
QColor	color () const
	Returns color of the light.
float	constantAttenuation () const
	Returns constant attenuation (A_0)
Qt3DCore::QEntity *	createEntity (const Qgs3DMapSettings &map, Qt3DCore::QEntity *parent) const override
	Creates an entity representing the light source.
float	intensity () const
	Returns intensity of the light.
float	linearAttenuation () const
	Returns linear attenuation (A_1)
bool	operator== (const QgsPointLightSettings &other)
QgsVector3D	position () const
	Returns position of the light (in 3D world coordinates)
float	quadraticAttenuation () const
	Returns quadratic attenuation (A_2)
void	readXml (const QDomElement &elem, const QgsReadWriteContext &context=QgsReadWriteContext()) override
	Reads configuration from a DOM element previously written using writeXml().
void	setColor (const QColor &color)
	Sets color of the light.
void	setConstantAttenuation (float value)
	Sets constant attenuation (A_0)
void	setIntensity (float intensity)
	Sets intensity of the light.
void	setLinearAttenuation (float value)
	Sets linear attenuation (A_1)
void	setPosition (const QgsVector3D &pos)
	Sets position of the light (in 3D world coordinates)
void	setQuadraticAttenuation (float value)
	Sets quadratic attenuation (A_2)
Qgis::LightSourceType	type () const override
	Returns the light source type.
QDomElement	writeXml (QDomDocument &doc, const QgsReadWriteContext &context=QgsReadWriteContext()) const override
	Writes the light source's configuration to a new DOM element and returns it.
Public Member Functions inherited from QgsLightSource
virtual	~QgsLightSource ()
virtual void	resolveReferences (const QgsProject &project)
	After reading from XML, resolve references to any layers that have been read as layer IDs.

Additional Inherited Members
Static Public Member Functions inherited from QgsLightSource
static QgsLightSource *	createFromXml (const QDomElement &element, const QgsReadWriteContext &context)
	Creates a new light source from an XML element.

Detailed Description

3

Definition of a point light in a 3D map scene

Total light at the distance D from a point light with intensity I is (I / TA) where TA is total attenuation which is calculated as (A_0 + A_1 * D + A_2 * D^2). The terms A_0, A_1 and A_2 stand for constant, linear and quadratic attenuation.

Since

QGIS 3.6

Definition at line 39 of file qgspointlightsettings.h.

Constructor & Destructor Documentation

QgsPointLightSettings()

QgsPointLightSettings::QgsPointLightSettings ( )

default

Construct a point light with default values.

Member Function Documentation

clone()

QgsPointLightSettings * QgsPointLightSettings::clone ( ) const

overridevirtual

Returns a copy of the light source.

Implements QgsLightSource.

Definition at line 33 of file qgspointlightsettings.cpp.

color()

QColor QgsPointLightSettings::color ( ) const

inline

Returns color of the light.

Definition at line 57 of file qgspointlightsettings.h.

constantAttenuation()

float QgsPointLightSettings::constantAttenuation ( ) const

inline

Returns constant attenuation (A_0)

Definition at line 67 of file qgspointlightsettings.h.

createEntity()

Qt3DCore::QEntity * QgsPointLightSettings::createEntity ( const Qgs3DMapSettings &  map, Qt3DCore::QEntity *  parent  ) const

overridevirtual

Creates an entity representing the light source.

Implements QgsLightSource.

Definition at line 38 of file qgspointlightsettings.cpp.

intensity()

float QgsPointLightSettings::intensity ( ) const

inline

Returns intensity of the light.

Definition at line 62 of file qgspointlightsettings.h.

linearAttenuation()

float QgsPointLightSettings::linearAttenuation ( ) const

inline

Returns linear attenuation (A_1)

Definition at line 72 of file qgspointlightsettings.h.

operator==()

bool QgsPointLightSettings::operator==

(

const QgsPointLightSettings &

other

)

Definition at line 110 of file qgspointlightsettings.cpp.

position()

QgsVector3D QgsPointLightSettings::position ( ) const

inline

Returns position of the light (in 3D world coordinates)

Definition at line 52 of file qgspointlightsettings.h.

quadraticAttenuation()

float QgsPointLightSettings::quadraticAttenuation ( ) const

inline

Returns quadratic attenuation (A_2)

Definition at line 77 of file qgspointlightsettings.h.

readXml()

void QgsPointLightSettings::readXml ( const QDomElement &  elem, const QgsReadWriteContext &  context = QgsReadWriteContext()  )

overridevirtual

Reads configuration from a DOM element previously written using writeXml().

See also

writeXml()

Implements QgsLightSource.

Definition at line 100 of file qgspointlightsettings.cpp.

setColor()

void QgsPointLightSettings::setColor ( const QColor &  color )

inline

Sets color of the light.

Definition at line 59 of file qgspointlightsettings.h.

setConstantAttenuation()

void QgsPointLightSettings::setConstantAttenuation ( float  value )

inline

Sets constant attenuation (A_0)

Definition at line 69 of file qgspointlightsettings.h.

setIntensity()

void QgsPointLightSettings::setIntensity ( float  intensity )

inline

Sets intensity of the light.

Definition at line 64 of file qgspointlightsettings.h.

setLinearAttenuation()

void QgsPointLightSettings::setLinearAttenuation ( float  value )

inline

Sets linear attenuation (A_1)

Definition at line 74 of file qgspointlightsettings.h.

setPosition()

void QgsPointLightSettings::setPosition ( const QgsVector3D &  pos )

inline

Sets position of the light (in 3D world coordinates)

Definition at line 54 of file qgspointlightsettings.h.

setQuadraticAttenuation()

void QgsPointLightSettings::setQuadraticAttenuation ( float  value )

inline

Sets quadratic attenuation (A_2)

Definition at line 79 of file qgspointlightsettings.h.

type()

Qgis::LightSourceType QgsPointLightSettings::type ( ) const

overridevirtual

Returns the light source type.

Implements QgsLightSource.

Definition at line 28 of file qgspointlightsettings.cpp.

writeXml()

QDomElement QgsPointLightSettings::writeXml ( QDomDocument &  doc, const QgsReadWriteContext &  context = QgsReadWriteContext()  ) const

overridevirtual

Writes the light source's configuration to a new DOM element and returns it.

See also

readXml()

Implements QgsLightSource.

Definition at line 86 of file qgspointlightsettings.cpp.

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

• /build/qgis-3.41.0+git20241225+af5edcb665c+99sid/src/3d/lights/qgspointlightsettings.h
• /build/qgis-3.41.0+git20241225+af5edcb665c+99sid/src/3d/lights/qgspointlightsettings.cpp