QgsMeshRendererVectorArrowSettings Class Reference

Represents a mesh renderer settings for vector datasets displayed with arrows. More...

#include <qgsmeshrenderersettings.h>

Public Types
enum	ArrowScalingMethod { MinMax = 0 , Scaled , Fixed }
	Algorithm how to transform vector magnitude to length of arrow on the device in pixels. More...

Public Member Functions
double	arrowHeadLengthRatio () const
	Returns ratio of the head length of the arrow (range 0-1)
double	arrowHeadWidthRatio () const
	Returns ratio of the head width of the arrow (range 0-1)
double	fixedShaftLength () const
	Returns fixed arrow length (in millimeters)
double	maxShaftLength () const
	Returns maximum shaft length (in millimeters)
double	minShaftLength () const
	Returns mininimum shaft length (in millimeters)
void	readXml (const QDomElement &elem)
	Reads configuration from the given DOM element.
double	scaleFactor () const
	Returns scale factor.
void	setArrowHeadLengthRatio (double arrowHeadLengthRatio)
	Sets ratio of the head length of the arrow (range 0-1)
void	setArrowHeadWidthRatio (double arrowHeadWidthRatio)
	Sets ratio of the head width of the arrow (range 0-1)
void	setFixedShaftLength (double fixedShaftLength)
	Sets fixed length (in millimeters)
void	setMaxShaftLength (double maxShaftLength)
	Sets maximum shaft length (in millimeters)
void	setMinShaftLength (double minShaftLength)
	Sets mininimum shaft length (in millimeters)
void	setScaleFactor (double scaleFactor)
	Sets scale factor.
void	setShaftLengthMethod (ArrowScalingMethod shaftLengthMethod)
	Sets method used for drawing arrows.
QgsMeshRendererVectorArrowSettings::ArrowScalingMethod	shaftLengthMethod () const
	Returns method used for drawing arrows.
QDomElement	writeXml (QDomDocument &doc) const
	Writes configuration to a new DOM element.

Detailed Description

Represents a mesh renderer settings for vector datasets displayed with arrows.

Note

The API is considered EXPERIMENTAL and can be changed without a notice

Since

QGIS 3.12

Definition at line 236 of file qgsmeshrenderersettings.h.

Member Enumeration Documentation

ArrowScalingMethod

enum QgsMeshRendererVectorArrowSettings::ArrowScalingMethod

Algorithm how to transform vector magnitude to length of arrow on the device in pixels.

Enumerator
MinMax	Scale vector magnitude linearly to fit in range of vectorFilterMin() and vectorFilterMax()
Scaled	Scale vector magnitude by factor scaleFactor()
Fixed	Use fixed length fixedShaftLength() regardless of vector's magnitude.

Definition at line 241 of file qgsmeshrenderersettings.h.

Member Function Documentation

arrowHeadLengthRatio()

double QgsMeshRendererVectorArrowSettings::arrowHeadLengthRatio

(

)

const

Returns ratio of the head length of the arrow (range 0-1)

Definition at line 344 of file qgsmeshrenderersettings.cpp.

arrowHeadWidthRatio()

double QgsMeshRendererVectorArrowSettings::arrowHeadWidthRatio

(

)

const

Returns ratio of the head width of the arrow (range 0-1)

Definition at line 334 of file qgsmeshrenderersettings.cpp.

fixedShaftLength()

double QgsMeshRendererVectorArrowSettings::fixedShaftLength

(

)

const

Returns fixed arrow length (in millimeters)

Only for QgsMeshRendererVectorSettings::ArrowScalingMethod::Fixed

Definition at line 324 of file qgsmeshrenderersettings.cpp.

maxShaftLength()

double QgsMeshRendererVectorArrowSettings::maxShaftLength

(

)

const

Returns maximum shaft length (in millimeters)

Only for QgsMeshRendererVectorSettings::ArrowScalingMethod::MinMax

Definition at line 304 of file qgsmeshrenderersettings.cpp.

minShaftLength()

double QgsMeshRendererVectorArrowSettings::minShaftLength

(

)

const

Returns mininimum shaft length (in millimeters)

Only for QgsMeshRendererVectorSettings::ArrowScalingMethod::MinMax

Definition at line 294 of file qgsmeshrenderersettings.cpp.

readXml()

void QgsMeshRendererVectorArrowSettings::readXml

(

const QDomElement &

elem

)

Reads configuration from the given DOM element.

Definition at line 383 of file qgsmeshrenderersettings.cpp.

scaleFactor()

double QgsMeshRendererVectorArrowSettings::scaleFactor

(

)

const

Returns scale factor.

Only for QgsMeshRendererVectorSettings::ArrowScalingMethod::Scaled

Definition at line 314 of file qgsmeshrenderersettings.cpp.

setArrowHeadLengthRatio()

void QgsMeshRendererVectorArrowSettings::setArrowHeadLengthRatio

(

double

arrowHeadLengthRatio

)

Sets ratio of the head length of the arrow (range 0-1)

Definition at line 349 of file qgsmeshrenderersettings.cpp.

setArrowHeadWidthRatio()

void QgsMeshRendererVectorArrowSettings::setArrowHeadWidthRatio

(

double

arrowHeadWidthRatio

)

Sets ratio of the head width of the arrow (range 0-1)

Definition at line 339 of file qgsmeshrenderersettings.cpp.

setFixedShaftLength()

void QgsMeshRendererVectorArrowSettings::setFixedShaftLength

(

double

fixedShaftLength

)

Sets fixed length (in millimeters)

Only for QgsMeshRendererVectorSettings::ArrowScalingMethod::Fixed

Definition at line 329 of file qgsmeshrenderersettings.cpp.

setMaxShaftLength()

void QgsMeshRendererVectorArrowSettings::setMaxShaftLength

(

double

maxShaftLength

)

Sets maximum shaft length (in millimeters)

Only for QgsMeshRendererVectorSettings::ArrowScalingMethod::MinMax

Definition at line 309 of file qgsmeshrenderersettings.cpp.

setMinShaftLength()

void QgsMeshRendererVectorArrowSettings::setMinShaftLength

(

double

minShaftLength

)

Sets mininimum shaft length (in millimeters)

Only for QgsMeshRendererVectorSettings::ArrowScalingMethod::MinMax

Definition at line 299 of file qgsmeshrenderersettings.cpp.

setScaleFactor()

void QgsMeshRendererVectorArrowSettings::setScaleFactor

(

double

scaleFactor

)

Sets scale factor.

Only for QgsMeshRendererVectorSettings::ArrowScalingMethod::Scaled

Definition at line 319 of file qgsmeshrenderersettings.cpp.

setShaftLengthMethod()

void QgsMeshRendererVectorArrowSettings::setShaftLengthMethod

(

QgsMeshRendererVectorArrowSettings::ArrowScalingMethod

shaftLengthMethod

)

Sets method used for drawing arrows.

Definition at line 289 of file qgsmeshrenderersettings.cpp.

shaftLengthMethod()

QgsMeshRendererVectorArrowSettings::ArrowScalingMethod QgsMeshRendererVectorArrowSettings::shaftLengthMethod

(

)

const

Returns method used for drawing arrows.

Definition at line 284 of file qgsmeshrenderersettings.cpp.

writeXml()

QDomElement QgsMeshRendererVectorArrowSettings::writeXml

(

QDomDocument &

doc

)

const

Writes configuration to a new DOM element.

Definition at line 354 of file qgsmeshrenderersettings.cpp.

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

• /build/qgis-3.43.0+git20250308+ebb4087afc0+99sid/src/core/mesh/qgsmeshrenderersettings.h
• /build/qgis-3.43.0+git20250308+ebb4087afc0+99sid/src/core/mesh/qgsmeshrenderersettings.cpp