QgsTINInterpolator Class Reference

Interpolation in a triangular irregular network. More...

#include <qgstininterpolator.h>

Inheritance diagram for QgsTINInterpolator:

[legend]

Collaboration diagram for QgsTINInterpolator:

[legend]

List of all members.

Public Types
enum	TIN_INTERPOLATION { Linear, CloughTocher }
Public Member Functions
	QgsTINInterpolator (const QList< LayerData > &inputData, TIN_INTERPOLATION interpolation=Linear, bool showProgressDialog=false)
	~QgsTINInterpolator ()
int	interpolatePoint (double x, double y, double &result)
	Calculates interpolation value for map coordinates x, y.
void	setExportTriangulationToFile (bool e)
void	setTriangulationFilePath (const QString &filepath)
Private Member Functions
void	initialize ()
	Create dual edge triangulation.
int	insertData (QgsFeature *f, bool zCoord, int attr, InputType type)
	Inserts the vertices of a feature into the triangulation.
Private Attributes
Triangulation *	mTriangulation
TriangleInterpolator *	mTriangleInterpolator
bool	mIsInitialized
bool	mShowProgressDialog
bool	mExportTriangulationToFile
	If true: export triangulation to shapefile after initialisation.
QString	mTriangulationFilePath
	File path to export the triangulation.
TIN_INTERPOLATION	mInterpolation
	Type of interpolation.

---

Detailed Description

Interpolation in a triangular irregular network.

Definition at line 29 of file qgstininterpolator.h.

---

Member Enumeration Documentation

enum QgsTINInterpolator::TIN_INTERPOLATION

Enumerator:

Linear
CloughTocher

Definition at line 33 of file qgstininterpolator.h.

---

Constructor & Destructor Documentation

QgsTINInterpolator::QgsTINInterpolator	(	const QList< LayerData > &	inputData,
		TIN_INTERPOLATION	interpolation = Linear,
		bool	showProgressDialog = false
	)

Definition at line 40 of file qgstininterpolator.cpp.

QgsTINInterpolator::~QgsTINInterpolator

(

)

Definition at line 45 of file qgstininterpolator.cpp.

References mTriangleInterpolator, and mTriangulation.

---

Member Function Documentation

int QgsTINInterpolator::interpolatePoint	(	double	x,
		double	y,
		double &	result
	)			[virtual]

Calculates interpolation value for map coordinates x, y.

Parameters:

	x	x-coordinate (in map units)
	y	y-coordinate (in map units)
	result	out: interpolation result

Returns:

0 in case of success

Implements QgsInterpolator.

Definition at line 51 of file qgstininterpolator.cpp.

References TriangleInterpolator::calcPoint(), Point3D::getZ(), initialize(), mIsInitialized, and mTriangleInterpolator.

void QgsTINInterpolator::setExportTriangulationToFile

(

bool

e

)

[inline]

Definition at line 48 of file qgstininterpolator.h.

void QgsTINInterpolator::setTriangulationFilePath

(

const QString &

filepath

)

[inline]

Definition at line 49 of file qgstininterpolator.h.

void QgsTINInterpolator::initialize

(

)

[private]

Create dual edge triangulation.

Definition at line 72 of file qgstininterpolator.cpp.

References TriDecorator::addTriangulation(), CloughTocher, NormVecDecorator::estimateFirstDerivatives(), insertData(), mExportTriangulationToFile, mInterpolation, mIsInitialized, QgsInterpolator::mLayerData, mShowProgressDialog, mTriangleInterpolator, mTriangulation, mTriangulationFilePath, DualEdgeTriangulation::saveAsShapefile(), NormVecDecorator::setTriangleInterpolator(), and CloughTocherInterpolator::setTriangulation().

Referenced by interpolatePoint().

int QgsTINInterpolator::insertData	(	QgsFeature *	f,
		bool	zCoord,
		int	attr,
		InputType	type
	)			[private]

Inserts the vertices of a feature into the triangulation.

Parameters:

	f	the feature
	zCoord	true if the z coordinate is the interpolation attribute
	attr	interpolation attribute index (if zCoord is false)
	type	point/structure line, break line

Returns:

0 in case of success, -1 if the feature could not be inserted because of numerical problems

Definition at line 171 of file qgstininterpolator.cpp.

References Triangulation::addLine(), Triangulation::addPoint(), QgsGeometry::asWkb(), QgsFeature::attributeMap(), QgsInterpolator::BREAK_LINES, QgsFeature::geometry(), Line3D::insertPoint(), mTriangulation, QgsInterpolator::POINTS, QGis::WKBLineString, QGis::WKBLineString25D, QGis::WKBMultiLineString, QGis::WKBMultiLineString25D, QGis::WKBMultiPoint, QGis::WKBMultiPoint25D, QGis::WKBMultiPolygon, QGis::WKBMultiPolygon25D, QGis::WKBPoint, QGis::WKBPoint25D, QGis::WKBPolygon, QGis::WKBPolygon25D, and QgsGeometry::wkbType().

Referenced by initialize().

---

Member Data Documentation

Triangulation* QgsTINInterpolator::mTriangulation [private]

Definition at line 52 of file qgstininterpolator.h.

Referenced by initialize(), insertData(), and ~QgsTINInterpolator().

TriangleInterpolator* QgsTINInterpolator::mTriangleInterpolator [private]

Definition at line 53 of file qgstininterpolator.h.

Referenced by initialize(), interpolatePoint(), and ~QgsTINInterpolator().

bool QgsTINInterpolator::mIsInitialized [private]

Definition at line 54 of file qgstininterpolator.h.

Referenced by initialize(), and interpolatePoint().

bool QgsTINInterpolator::mShowProgressDialog [private]

Definition at line 55 of file qgstininterpolator.h.

Referenced by initialize().

bool QgsTINInterpolator::mExportTriangulationToFile [private]

If true: export triangulation to shapefile after initialisation.

Definition at line 57 of file qgstininterpolator.h.

Referenced by initialize().

QString QgsTINInterpolator::mTriangulationFilePath [private]

File path to export the triangulation.

Definition at line 59 of file qgstininterpolator.h.

Referenced by initialize().

TIN_INTERPOLATION QgsTINInterpolator::mInterpolation [private]

Type of interpolation.

Definition at line 61 of file qgstininterpolator.h.

Referenced by initialize().

---

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

• src/analysis/interpolation/qgstininterpolator.h
• src/analysis/interpolation/qgstininterpolator.cpp