QgsProfileRequest Class Reference

Encapsulates properties and constraints relating to fetching elevation profiles from different sources. More...

#include <qgsprofilerequest.h>

Public Member Functions
	QgsProfileRequest (const QgsProfileRequest &other)
	Copy constructor.
	QgsProfileRequest (QgsCurve *curve)
	Constructor for QgsProfileRequest.
	~QgsProfileRequest ()
QgsCoordinateReferenceSystem	crs () const
	Returns the desired Coordinate Reference System for the profile.
QgsExpressionContext &	expressionContext ()
	Returns the expression context used to evaluate expressions.
const QgsExpressionContext &	expressionContext () const
	Returns the expression context used to evaluate expressions.
bool	operator!= (const QgsProfileRequest &other) const
QgsProfileRequest &	operator= (const QgsProfileRequest &other)
	Assignment operator.
bool	operator== (const QgsProfileRequest &other) const
QgsCurve *	profileCurve () const
	Returns the cross section profile curve, which represents the line along which the profile should be generated.
QgsProfileRequest &	setCrs (const QgsCoordinateReferenceSystem &crs)
	Sets the desired Coordinate Reference System (crs) for the profile.
QgsProfileRequest &	setExpressionContext (const QgsExpressionContext &context)
	Sets the expression context used to evaluate expressions.
QgsProfileRequest &	setProfileCurve (QgsCurve *curve)
	Sets the cross section profile curve, which represents the line along which the profile should be generated.
QgsProfileRequest &	setStepDistance (double distance)
	Sets the profile step distance (in crs() units).
QgsProfileRequest &	setTerrainProvider (QgsAbstractTerrainProvider *provider)
	Sets the terrain provider.
QgsProfileRequest &	setTolerance (double tolerance)
	Sets the tolerance of the request (in crs() units).
QgsProfileRequest &	setTransformContext (const QgsCoordinateTransformContext &context)
	Sets the transform context, for use when transforming coordinates from a source to the request's crs()
double	stepDistance () const
	Returns the profile step distance (in crs() units).
QgsAbstractTerrainProvider *	terrainProvider () const
	Returns the terrain provider.
double	tolerance () const
	Returns the tolerance of the request (in crs() units).
QgsCoordinateTransformContext	transformContext () const
	Returns the transform context, for use when transforming coordinates from a source to the request's crs()

Detailed Description

Encapsulates properties and constraints relating to fetching elevation profiles from different sources.

Since

QGIS 3.26

Definition at line 37 of file qgsprofilerequest.h.

Constructor & Destructor Documentation

QgsProfileRequest() [1/2]

QgsProfileRequest::QgsProfileRequest

(

QgsCurve *

curve

)

Constructor for QgsProfileRequest.

The curve argument specifies the line along which the profile should be generated. Ownership is transferred to the request.

Definition at line 21 of file qgsprofilerequest.cpp.

QgsProfileRequest() [2/2]

QgsProfileRequest::QgsProfileRequest

(

const QgsProfileRequest &

other

)

Copy constructor.

Definition at line 29 of file qgsprofilerequest.cpp.

~QgsProfileRequest()

QgsProfileRequest::~QgsProfileRequest ( )

default

Member Function Documentation

crs()

QgsCoordinateReferenceSystem QgsProfileRequest::crs

(

)

const

Returns the desired Coordinate Reference System for the profile.

This also represents the CRS associated with the profileCurve().

See also

setCrs()

Definition at line 108 of file qgsprofilerequest.cpp.

expressionContext() [1/2]

QgsExpressionContext & QgsProfileRequest::expressionContext ( )

inline

Returns the expression context used to evaluate expressions.

See also

setExpressionContext()

Definition at line 193 of file qgsprofilerequest.h.

expressionContext() [2/2]

const QgsExpressionContext & QgsProfileRequest::expressionContext ( ) const

inline

Returns the expression context used to evaluate expressions.

See also

setExpressionContext()

Definition at line 199 of file qgsprofilerequest.h.

operator!=()

bool QgsProfileRequest::operator!=

(

const QgsProfileRequest &

other

)

const

Definition at line 86 of file qgsprofilerequest.cpp.

operator=()

QgsProfileRequest & QgsProfileRequest::operator=

(

const QgsProfileRequest &

other

)

Assignment operator.

Definition at line 41 of file qgsprofilerequest.cpp.

operator==()

bool QgsProfileRequest::operator==

(

const QgsProfileRequest &

other

)

const

Definition at line 53 of file qgsprofilerequest.cpp.

profileCurve()

QgsCurve * QgsProfileRequest::profileCurve

(

)

const

Returns the cross section profile curve, which represents the line along which the profile should be generated.

The coordinate reference system of the curve is retrieved via crs().

See also

setProfileCurve()

Definition at line 97 of file qgsprofilerequest.cpp.

setCrs()

QgsProfileRequest & QgsProfileRequest::setCrs

(

const QgsCoordinateReferenceSystem &

crs

)

Sets the desired Coordinate Reference System (crs) for the profile.

This also represents the CRS associated with the profileCurve().

See also

crs()

Definition at line 102 of file qgsprofilerequest.cpp.

setExpressionContext()

QgsProfileRequest & QgsProfileRequest::setExpressionContext

(

const QgsExpressionContext &

context

)

Sets the expression context used to evaluate expressions.

See also

expressionContext()

Definition at line 147 of file qgsprofilerequest.cpp.

setProfileCurve()

QgsProfileRequest & QgsProfileRequest::setProfileCurve

(

QgsCurve *

curve

)

Sets the cross section profile curve, which represents the line along which the profile should be generated.

Ownership of curve is transferred to the request.

The coordinate reference system of the curve is set via setCrs().

See also

profileCurve()

Definition at line 91 of file qgsprofilerequest.cpp.

setStepDistance()

QgsProfileRequest & QgsProfileRequest::setStepDistance

(

double

distance

)

Sets the profile step distance (in crs() units).

This value determines the approximate distance between sampled points along the profileCurve(). Depending on the sources sampled, smaller step distances may be used in some circumstances. Effectively, this value is the "smallest permissible maximum distance between sampled points".

Smaller distances will take longer to calculate.

A NaN distance value will cause an appropriate step distance to be automatically calculated.

See also

stepDistance()

Definition at line 141 of file qgsprofilerequest.cpp.

setTerrainProvider()

QgsProfileRequest & QgsProfileRequest::setTerrainProvider

(

QgsAbstractTerrainProvider *

provider

)

Sets the terrain provider.

Ownership of provider is transferred to the request.

See also

terrainProvider()

Definition at line 130 of file qgsprofilerequest.cpp.

setTolerance()

QgsProfileRequest & QgsProfileRequest::setTolerance

(

double

tolerance

)

Sets the tolerance of the request (in crs() units).

This value determines how far from the profileCurve() is appropriate for inclusion of results. For instance, when a profile is generated for a point vector layer this tolerance distance will dictate how far from the actual profile curve a point can reside within to be included in the results. Other sources may completely ignore this tolerance if it is not appropriate for the particular source.

See also

tolerance()

Definition at line 124 of file qgsprofilerequest.cpp.

setTransformContext()

QgsProfileRequest & QgsProfileRequest::setTransformContext

(

const QgsCoordinateTransformContext &

context

)

Sets the transform context, for use when transforming coordinates from a source to the request's crs()

See also

transformContext()

Definition at line 118 of file qgsprofilerequest.cpp.

stepDistance()

double QgsProfileRequest::stepDistance ( ) const

inline

Returns the profile step distance (in crs() units).

This value determines the approximate distance between sampled points along the profileCurve(). Depending on the sources sampled, smaller step distances may be used in some circumstances. Effectively, this value is the "smallest permissible maximum distance between sampled points".

Smaller distances will take longer to calculate.

A NaN distance value indicates that an appropriate step distance will be automatically calculated.

See also

setStepDistance()

Definition at line 187 of file qgsprofilerequest.h.

terrainProvider()

QgsAbstractTerrainProvider * QgsProfileRequest::terrainProvider

(

)

const

Returns the terrain provider.

See also

setTerrainProvider()

Definition at line 136 of file qgsprofilerequest.cpp.

tolerance()

double QgsProfileRequest::tolerance ( ) const

inline

Returns the tolerance of the request (in crs() units).

This value determines how far from the profileCurve() is appropriate for inclusion of results. For instance, when a profile is generated for a point vector layer this tolerance distance will dictate how far from the actual profile curve a point can reside within to be included in the results. Other sources may completely ignore this tolerance if it is not appropriate for the particular source.

See also

setTolerance()

Definition at line 141 of file qgsprofilerequest.h.

transformContext()

QgsCoordinateTransformContext QgsProfileRequest::transformContext

(

)

const

Returns the transform context, for use when transforming coordinates from a source to the request's crs()

See also

setTransformContext()

Definition at line 113 of file qgsprofilerequest.cpp.

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

• /home/fischer/src/qgis-3.38/src/core/elevation/qgsprofilerequest.h
• /home/fischer/src/qgis-3.38/src/core/elevation/qgsprofilerequest.cpp