QgsMeshDataSourceInterface Class Reference

Interface for mesh data sources. More...

#include <qgsmeshdataprovider.h>

Inheritance diagram for QgsMeshDataSourceInterface:

Public Member Functions
virtual	~QgsMeshDataSourceInterface ()=default
	Dtor. More...
bool	contains (const QgsMesh::ElementType &type) const
	Returns whether the mesh contains at mesh elements of given type. More...
virtual int	edgeCount () const =0
	Returns number of edges in the native mesh. More...
virtual int	faceCount () const =0
	Returns number of faces in the native mesh. More...
virtual void	populateMesh (QgsMesh *mesh) const =0
	Populates the mesh vertices, edges and faces. More...
virtual int	vertexCount () const =0
	Returns number of vertices in the native mesh. More...

Detailed Description

Interface for mesh data sources.

Mesh is a collection of vertices, edges and faces in 2D or 3D space

• vertex - XY(Z) point (in the mesh's coordinate reference system)
• edge - two XY(Z) points (in the mesh's coordinate reference system) representing straight seqment
• faces - sets of vertices forming a closed shape - typically triangles or quadrilaterals

Base on the underlying data provider/format, whole mesh is either stored in memory or read on demand

Note

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

Since

QGIS 3.2

Definition at line 134 of file qgsmeshdataprovider.h.

Constructor & Destructor Documentation

~QgsMeshDataSourceInterface()

virtual QgsMeshDataSourceInterface::~QgsMeshDataSourceInterface ( )

virtualdefault

Dtor.

Member Function Documentation

contains()

bool QgsMeshDataSourceInterface::contains

(

const QgsMesh::ElementType &

type

)

const

Returns whether the mesh contains at mesh elements of given type.

Since

QGIS 3.14

Definition at line 184 of file qgsmeshdataprovider.cpp.

edgeCount()

virtual int QgsMeshDataSourceInterface::edgeCount ( ) const

pure virtual

Returns number of edges in the native mesh.

Returns

Number of edges in the mesh

Since

QGIS 3.14

faceCount()

virtual int QgsMeshDataSourceInterface::faceCount ( ) const

pure virtual

Returns number of faces in the native mesh.

Returns

Number of faces in the mesh

populateMesh()

virtual void QgsMeshDataSourceInterface::populateMesh ( QgsMesh *  mesh ) const

pure virtual

Populates the mesh vertices, edges and faces.

Since

QGIS 3.6

vertexCount()

virtual int QgsMeshDataSourceInterface::vertexCount ( ) const

pure virtual

Returns number of vertices in the native mesh.

Returns

Number of vertices in the mesh

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

• /build/qgis-3.20.0+99unstable/src/core/mesh/qgsmeshdataprovider.h
• /build/qgis-3.20.0+99unstable/src/core/mesh/qgsmeshdataprovider.cpp