QgsMeshTriangulation Class Reference

Class that handles mesh creation with Delaunay constrained triangulation. More...

#include <qgsmeshtriangulation.h>

Inheritance diagram for QgsMeshTriangulation:

Public Member Functions
	QgsMeshTriangulation ()
	Constructor. More...
	~QgsMeshTriangulation ()
	Destructor. More...
bool	addBreakLines (QgsFeatureIterator &lineFeatureIterator, int valueAttribute, const QgsCoordinateTransform &transformContext, QgsFeedback *feedback=nullptr, long featureCount=1)
	Adds break lines from a vector layer, return true if successful. More...
int	addVertex (const QgsPoint &vertex)
	Adds a new vertex in the triangulation and returns the index of the new vertex. More...
bool	addVertices (QgsFeatureIterator &vertexFeatureIterator, int valueAttribute, const QgsCoordinateTransform &transform, QgsFeedback *feedback=nullptr, long featureCount=1)
	Adds vertices to the triangulation from a feature iterator, return true if successful. More...
void	setCrs (const QgsCoordinateReferenceSystem &crs)
	Sets the coordinate reference system used for the triangulation. More...
QgsMesh	triangulatedMesh (QgsFeedback *feedback=nullptr) const
	Returns the triangulated mesh. More...

Detailed Description

Class that handles mesh creation with Delaunay constrained triangulation.

Since

QGIS 3.16

Definition at line 42 of file qgsmeshtriangulation.h.

Constructor & Destructor Documentation

QgsMeshTriangulation()

QgsMeshTriangulation::QgsMeshTriangulation

(

)

Constructor.

Definition at line 30 of file qgsmeshtriangulation.cpp.

~QgsMeshTriangulation()

QgsMeshTriangulation::~QgsMeshTriangulation ( )

default

Destructor.

Member Function Documentation

addBreakLines()

bool QgsMeshTriangulation::addBreakLines	(	QgsFeatureIterator &	lineFeatureIterator,
		int	valueAttribute,
		const QgsCoordinateTransform &	transformContext,
		QgsFeedback *	feedback = nullptr,
		long	featureCount = 1
	)

Adds break lines from a vector layer, return true if successful.

Parameters

lineFeatureIterator	the feature iterator of break lines to insert
valueAttribute	the index of the attribute that represents the value of vertices, if -1 uses Z coordinate of vertices
transformContext	the coordinates transform context used to transform coordinates
feedback	feedback argument may be specified to allow cancellation and progress reports
featureCount	the count of feature to allow progress report of the feedback

Warning

if the feature iterator contains only point geometries, the vertices will be added only without treating them as breaklines

Definition at line 62 of file qgsmeshtriangulation.cpp.

addVertex()

int QgsMeshTriangulation::addVertex

(

const QgsPoint &

vertex

)

Adds a new vertex in the triangulation and returns the index of the new vertex.

Since

QGIS 3.22

Definition at line 98 of file qgsmeshtriangulation.cpp.

addVertices()

bool QgsMeshTriangulation::addVertices	(	QgsFeatureIterator &	vertexFeatureIterator,
		int	valueAttribute,
		const QgsCoordinateTransform &	transform,
		QgsFeedback *	feedback = nullptr,
		long	featureCount = 1
	)

Adds vertices to the triangulation from a feature iterator, return true if successful.

Parameters

vertexFeatureIterator	the feature iterator of vertices to insert
valueAttribute	the index of the attribute that represents the value of vertices, if -1 uses Z coordinate of vertices
transform	the coordinates transform used to transform coordinates
feedback	feedback argument may be specified to allow cancellation and progress reports
featureCount	the count of feature to allow progress report of the feedback

Definition at line 38 of file qgsmeshtriangulation.cpp.

setCrs()

void QgsMeshTriangulation::setCrs

(

const QgsCoordinateReferenceSystem &

crs

)

Sets the coordinate reference system used for the triangulation.

Definition at line 108 of file qgsmeshtriangulation.cpp.

triangulatedMesh()

QgsMesh QgsMeshTriangulation::triangulatedMesh

(

QgsFeedback *

feedback = nullptr

)

const

Returns the triangulated mesh.

Definition at line 103 of file qgsmeshtriangulation.cpp.

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

• /build/qgis-3.28.0+99sid/src/analysis/mesh/qgsmeshtriangulation.h
• /build/qgis-3.28.0+99sid/src/analysis/mesh/qgsmeshtriangulation.cpp