#include <qgsrasterprojector.h>

Collaboration diagram for QgsRasterProjector:

Public Member Functions
	QgsRasterProjector (QgsCoordinateReferenceSystem theSrcCRS, QgsCoordinateReferenceSystem theDestCRS, QgsRectangle theDestExtent, int theDestRows, int theDestCols, double theMaxSrcXRes, double theMaxSrcYRes, QgsRectangle theExtent)
	QgsRasterProjector implements approximate projection support for it calculates grid of points in source CRS for target CRS + extent which are used to calculate affine transformation matrices.
	~QgsRasterProjector ()
	The destructor.
void	destPointOnCPMatrix (int theRow, int theCol, double theX, double theY)
	get destination point for _current_ destination position
int	matrixRow (int theDestRow)
	Get matrix upper left row/col indexes for destination row/col.
int	matrixCol (int theDestCol)
QgsPoint	srcPoint (int theRow, int theCol)
	get destination point for _current_ matrix position
void	preciseSrcRowCol (int theDestRow, int theDestCol, int theSrcRow, int theSrcCol)
	Get precise source row and column indexes for current source extent and resolution.
void	approximateSrcRowCol (int theDestRow, int theDestCol, int theSrcRow, int theSrcCol)
	Get approximate source row and column indexes for current source extent and resolution.
void	srcRowCol (int theDestRow, int theDestCol, int theSrcRow, int theSrcCol)
	Get source row and column indexes for current source extent and resolution.
void	insertRows ()
	insert rows to matrix
void	insertCols ()
	insert columns to matrix
void	calcCP (int theRow, int theCol)
bool	calcRow (int theRow)
	calculate matrix row
bool	calcCol (int theCol)
	calculate matrix column
void	calcSrcExtent ()
	calculate source extent
void	calcSrcRowsCols ()
	calculate minimum source width and height
bool	checkCols ()
	check error along columns returns true if within threshold
bool	checkRows ()
	check error along rows returns true if within threshold
void	calcHelper (int theMatrixRow, QgsPoint *thePoints)
	Calculate array of src helper points.
void	nextHelper ()
	Calc / switch helper.
QgsRectangle	srcExtent ()
	get source extent
int	srcRows ()
	get/set source width/height
int	srcCols ()
void	setSrcRows (int theRows)
void	setSrcCols (int theCols)
QString	cpToString ()
	get mCPMatrix as string
Private Attributes
QgsCoordinateReferenceSystem	mSrcCRS
	Source CRS.
QgsCoordinateReferenceSystem	mDestCRS
	Destination CRS.
QgsCoordinateTransform	mCoordinateTransform
	Coordinate transform.
QgsRectangle	mDestExtent
	Destination extent.
QgsRectangle	mSrcExtent
	Source extent.
QgsRectangle	mExtent
	Source raster extent.
int	mDestRows
	Number of destination rows.
int	mDestCols
	Number of destination columns.
double	mDestXRes
	Destination x resolution.
double	mDestYRes
	Destination y resolution.
int	mSrcRows
	Number of source rows.
int	mSrcCols
	Number of source columns.
double	mSrcXRes
	Source x resolution.
double	mSrcYRes
	Source y resolution.
double	mDestRowsPerMatrixRow
	number of destination rows per matrix row
double	mDestColsPerMatrixCol
	number of destination cols per matrix col
QList< QList< QgsPoint > >	mCPMatrix
	Grid of source control points.
QgsPoint *	pHelperTop
	Array of source points for each destination column on top of current CPMatrix grid row.
QgsPoint *	pHelperBottom
	Array of source points for each destination column on bottom of current CPMatrix grid row.
int	mHelperTopRow
	Current mHelperTop matrix row.
int	mCPCols
	Number of mCPMatrix columns.
int	mCPRows
	Number of mCPMatrix rows.
double	mSqrTolerance
	Maximum tolerance in destination units.
double	mMaxSrcXRes
	Maximum source resolution.
double	mMaxSrcYRes
bool	mApproximate
	Use approximation.

Detailed Description

Definition at line 40 of file qgsrasterprojector.h.

Constructor & Destructor Documentation

QgsRasterProjector::QgsRasterProjector	(	QgsCoordinateReferenceSystem	theSrcCRS,
		QgsCoordinateReferenceSystem	theDestCRS,
		QgsRectangle	theDestExtent,
		int	theDestRows,
		int	theDestCols,
		double	theMaxSrcXRes,
		double	theMaxSrcYRes,
		QgsRectangle	theExtent
	)

QgsRasterProjector implements approximate projection support for it calculates grid of points in source CRS for target CRS + extent which are used to calculate affine transformation matrices.

Definition at line 22 of file qgsrasterprojector.cpp.

References calcHelper(), calcRow(), calcSrcExtent(), calcSrcRowsCols(), checkCols(), checkRows(), QgsRectangle::height(), insertCols(), insertRows(), mApproximate, mCPCols, mCPMatrix, mCPRows, mDestCols, mDestColsPerMatrixCol, mDestExtent, mDestRows, mDestRowsPerMatrixRow, mDestXRes, mDestYRes, mHelperTopRow, mSqrTolerance, mSrcCols, mSrcExtent, mSrcRows, mSrcXRes, mSrcYRes, pHelperBottom, pHelperTop, QgsDebugMsg, QgsRectangle::toString(), and QgsRectangle::width().

QgsRasterProjector::~QgsRasterProjector ( )

The destructor.

Definition at line 113 of file qgsrasterprojector.cpp.

Member Function Documentation

void QgsRasterProjector::approximateSrcRowCol	(	int	theDestRow,
		int	theDestCol,
		int *	theSrcRow,
		int *	theSrcCol
	)		`[inline]`

Get approximate source row and column indexes for current source extent and resolution.

Definition at line 341 of file qgsrasterprojector.cpp.

References destPointOnCPMatrix(), matrixCol(), matrixRow(), mDestExtent, mDestYRes, mHelperTopRow, mSrcCols, mSrcExtent, mSrcRows, mSrcXRes, mSrcYRes, nextHelper(), pHelperBottom, pHelperTop, QgsPoint::x(), QgsRectangle::xMinimum(), QgsPoint::y(), and QgsRectangle::yMaximum().

Referenced by srcRowCol().

bool QgsRasterProjector::calcCol ( int theCol )

calculate matrix column

Definition at line 453 of file qgsrasterprojector.cpp.

References calcCP(), mCPRows, and QgsDebugMsgLevel.

Referenced by insertCols().

void QgsRasterProjector::calcCP	(	int	theRow,
		int	theCol
	)

Definition at line 433 of file qgsrasterprojector.cpp.

References destPointOnCPMatrix(), mCoordinateTransform, mCPMatrix, and QgsCoordinateTransform::transform().

Referenced by calcCol(), and calcRow().

void QgsRasterProjector::calcHelper	(	int	theMatrixRow,
		QgsPoint *	thePoints
	)

Calculate array of src helper points.

Definition at line 263 of file qgsrasterprojector.cpp.

References destPointOnCPMatrix(), matrixCol(), mCPMatrix, mDestCols, mDestExtent, mDestXRes, QgsPoint::setX(), QgsPoint::setY(), QgsPoint::x(), QgsRectangle::xMinimum(), and QgsPoint::y().

Referenced by nextHelper(), and QgsRasterProjector().

bool QgsRasterProjector::calcRow ( int theRow )

calculate matrix row

Definition at line 442 of file qgsrasterprojector.cpp.

References calcCP(), mCPCols, and QgsDebugMsgLevel.

Referenced by insertRows(), and QgsRasterProjector().

void QgsRasterProjector::calcSrcExtent ( )

calculate source extent

Definition at line 118 of file qgsrasterprojector.cpp.

References QgsRectangle::combineExtentWith(), mCPCols, mCPMatrix, mCPRows, mExtent, mMaxSrcXRes, mMaxSrcYRes, mSrcExtent, QgsDebugMsg, QgsRectangle::setXMaximum(), QgsRectangle::setXMinimum(), QgsRectangle::setYMaximum(), QgsRectangle::setYMinimum(), QgsRectangle::toString(), QgsPoint::x(), QgsRectangle::xMaximum(), QgsRectangle::xMinimum(), QgsPoint::y(), QgsRectangle::yMaximum(), and QgsRectangle::yMinimum().

Referenced by QgsRasterProjector().

void QgsRasterProjector::calcSrcRowsCols ( )

calculate minimum source width and height

Definition at line 189 of file qgsrasterprojector.cpp.

References QgsRectangle::height(), mCPCols, mCPMatrix, mCPRows, mDestCols, mDestRows, mMaxSrcXRes, mMaxSrcYRes, mSrcCols, mSrcExtent, mSrcRows, QgsDebugMsg, QgsPoint::sqrDist(), and QgsRectangle::width().

Referenced by QgsRasterProjector().

bool QgsRasterProjector::checkCols ( )

check error along columns returns true if within threshold

Definition at line 464 of file qgsrasterprojector.cpp.

References destPointOnCPMatrix(), mCoordinateTransform, mCPCols, mCPMatrix, mCPRows, mSqrTolerance, QgsCoordinateTransform::ReverseTransform, QgsPoint::sqrDist(), QgsCoordinateTransform::transform(), QgsPoint::x(), and QgsPoint::y().

Referenced by QgsRasterProjector().

bool QgsRasterProjector::checkRows ( )

check error along rows returns true if within threshold

Definition at line 488 of file qgsrasterprojector.cpp.

References destPointOnCPMatrix(), mCoordinateTransform, mCPCols, mCPMatrix, mCPRows, mSqrTolerance, QgsCoordinateTransform::ReverseTransform, QgsPoint::sqrDist(), QgsCoordinateTransform::transform(), QgsPoint::x(), and QgsPoint::y().

Referenced by QgsRasterProjector().

QString QgsRasterProjector::cpToString ( )

get mCPMatrix as string

Definition at line 171 of file qgsrasterprojector.cpp.

References mCPCols, mCPMatrix, mCPRows, and QgsPoint::toString().

void QgsRasterProjector::destPointOnCPMatrix	(	int	theRow,
		int	theCol,
		double *	theX,
		double *	theY
	)		`[inline]`

get destination point for _current_ destination position

Definition at line 241 of file qgsrasterprojector.cpp.

References QgsRectangle::height(), mCPCols, mCPRows, mDestExtent, QgsRectangle::width(), QgsRectangle::xMinimum(), and QgsRectangle::yMaximum().

Referenced by approximateSrcRowCol(), calcCP(), calcHelper(), checkCols(), and checkRows().

void QgsRasterProjector::insertCols ( )

insert columns to matrix

Definition at line 415 of file qgsrasterprojector.cpp.

References calcCol(), mCPCols, mCPMatrix, and mCPRows.

Referenced by QgsRasterProjector().

void QgsRasterProjector::insertRows ( )

insert rows to matrix

Definition at line 396 of file qgsrasterprojector.cpp.

References calcRow(), mCPCols, mCPMatrix, mCPRows, and QgsDebugMsgLevel.

Referenced by QgsRasterProjector().

int QgsRasterProjector::matrixCol ( int theDestCol ) [inline]

Definition at line 251 of file qgsrasterprojector.cpp.

References mDestColsPerMatrixCol.

Referenced by approximateSrcRowCol(), and calcHelper().

int QgsRasterProjector::matrixRow ( int theDestRow ) [inline]

Get matrix upper left row/col indexes for destination row/col.

Definition at line 247 of file qgsrasterprojector.cpp.

References mDestRowsPerMatrixRow.

Referenced by approximateSrcRowCol().

void QgsRasterProjector::nextHelper ( )

Calc / switch helper.

Definition at line 288 of file qgsrasterprojector.cpp.

References calcHelper(), mHelperTopRow, pHelperBottom, and pHelperTop.

Referenced by approximateSrcRowCol().

void QgsRasterProjector::preciseSrcRowCol	(	int	theDestRow,
		int	theDestCol,
		int *	theSrcRow,
		int *	theSrcCol
	)		`[inline]`

Get precise source row and column indexes for current source extent and resolution.

Definition at line 305 of file qgsrasterprojector.cpp.

References mCoordinateTransform, mDestExtent, mDestXRes, mDestYRes, mSrcCols, mSrcExtent, mSrcRows, mSrcXRes, mSrcYRes, QgsCoordinateTransform::transformInPlace(), QgsRectangle::xMinimum(), and QgsRectangle::yMaximum().

Referenced by srcRowCol().

void QgsRasterProjector::setSrcCols ( int theCols ) [inline]

Definition at line 123 of file qgsrasterprojector.h.

References mSrcCols, mSrcExtent, mSrcYRes, and QgsRectangle::width().

void QgsRasterProjector::setSrcRows ( int theRows ) [inline]

Definition at line 122 of file qgsrasterprojector.h.

References QgsRectangle::height(), mSrcExtent, mSrcRows, and mSrcXRes.

int QgsRasterProjector::srcCols ( ) [inline]

Definition at line 121 of file qgsrasterprojector.h.

References mSrcCols.

Referenced by QgsRasterDataProvider::readBlock().

QgsRectangle QgsRasterProjector::srcExtent ( ) [inline]

get source extent

Definition at line 117 of file qgsrasterprojector.h.

References mSrcExtent.

Referenced by QgsRasterDataProvider::readBlock().

QgsPoint QgsRasterProjector::srcPoint	(	int	theRow,
		int	theCol
	)

get destination point for _current_ matrix position

Definition at line 256 of file qgsrasterprojector.cpp.

void QgsRasterProjector::srcRowCol	(	int	theDestRow,
		int	theDestCol,
		int *	theSrcRow,
		int *	theSrcCol
	)

Get source row and column indexes for current source extent and resolution.

Definition at line 298 of file qgsrasterprojector.cpp.

References approximateSrcRowCol(), mApproximate, and preciseSrcRowCol().

Referenced by QgsRasterDataProvider::readBlock().

int QgsRasterProjector::srcRows ( ) [inline]

get/set source width/height

Definition at line 120 of file qgsrasterprojector.h.

References mSrcRows.

Referenced by QgsRasterDataProvider::readBlock().

Member Data Documentation

bool QgsRasterProjector::mApproximate [private]

Use approximation.

Definition at line 204 of file qgsrasterprojector.h.

Referenced by QgsRasterProjector(), and srcRowCol().

QgsCoordinateTransform QgsRasterProjector::mCoordinateTransform [private]

Coordinate transform.

Definition at line 136 of file qgsrasterprojector.h.

Referenced by calcCP(), checkCols(), checkRows(), and preciseSrcRowCol().

int QgsRasterProjector::mCPCols [private]

Number of mCPMatrix columns.

Definition at line 192 of file qgsrasterprojector.h.

Referenced by calcRow(), calcSrcExtent(), calcSrcRowsCols(), checkCols(), checkRows(), cpToString(), destPointOnCPMatrix(), insertCols(), insertRows(), and QgsRasterProjector().

QList< QList<QgsPoint> > QgsRasterProjector::mCPMatrix [private]

Grid of source control points.

Definition at line 178 of file qgsrasterprojector.h.

Referenced by calcCP(), calcHelper(), calcSrcExtent(), calcSrcRowsCols(), checkCols(), checkRows(), cpToString(), insertCols(), insertRows(), and QgsRasterProjector().

int QgsRasterProjector::mCPRows [private]

Number of mCPMatrix rows.

Definition at line 194 of file qgsrasterprojector.h.

Referenced by calcCol(), calcSrcExtent(), calcSrcRowsCols(), checkCols(), checkRows(), cpToString(), destPointOnCPMatrix(), insertCols(), insertRows(), and QgsRasterProjector().

int QgsRasterProjector::mDestCols [private]

Number of destination columns.

Definition at line 151 of file qgsrasterprojector.h.

Referenced by calcHelper(), calcSrcRowsCols(), and QgsRasterProjector().

double QgsRasterProjector::mDestColsPerMatrixCol [private]

number of destination cols per matrix col

Definition at line 175 of file qgsrasterprojector.h.

Referenced by matrixCol(), and QgsRasterProjector().

QgsCoordinateReferenceSystem QgsRasterProjector::mDestCRS [private]

Destination CRS.

Definition at line 133 of file qgsrasterprojector.h.

QgsRectangle QgsRasterProjector::mDestExtent [private]

Destination extent.

Definition at line 139 of file qgsrasterprojector.h.

Referenced by approximateSrcRowCol(), calcHelper(), destPointOnCPMatrix(), preciseSrcRowCol(), and QgsRasterProjector().

int QgsRasterProjector::mDestRows [private]

Number of destination rows.

Definition at line 148 of file qgsrasterprojector.h.

Referenced by calcSrcRowsCols(), and QgsRasterProjector().

double QgsRasterProjector::mDestRowsPerMatrixRow [private]

number of destination rows per matrix row

Definition at line 172 of file qgsrasterprojector.h.

Referenced by matrixRow(), and QgsRasterProjector().

double QgsRasterProjector::mDestXRes [private]

Destination x resolution.

Definition at line 154 of file qgsrasterprojector.h.

Referenced by calcHelper(), preciseSrcRowCol(), and QgsRasterProjector().

double QgsRasterProjector::mDestYRes [private]

Destination y resolution.

Definition at line 157 of file qgsrasterprojector.h.

Referenced by approximateSrcRowCol(), preciseSrcRowCol(), and QgsRasterProjector().

QgsRectangle QgsRasterProjector::mExtent [private]

Source raster extent.

Definition at line 145 of file qgsrasterprojector.h.

Referenced by calcSrcExtent().

int QgsRasterProjector::mHelperTopRow [private]

Current mHelperTop matrix row.

Definition at line 189 of file qgsrasterprojector.h.

Referenced by approximateSrcRowCol(), nextHelper(), and QgsRasterProjector().

double QgsRasterProjector::mMaxSrcXRes [private]

Maximum source resolution.

Definition at line 200 of file qgsrasterprojector.h.

Referenced by calcSrcExtent(), and calcSrcRowsCols().

double QgsRasterProjector::mMaxSrcYRes [private]

Definition at line 201 of file qgsrasterprojector.h.

Referenced by calcSrcExtent(), and calcSrcRowsCols().

double QgsRasterProjector::mSqrTolerance [private]

Maximum tolerance in destination units.

Definition at line 197 of file qgsrasterprojector.h.

Referenced by checkCols(), checkRows(), and QgsRasterProjector().

int QgsRasterProjector::mSrcCols [private]

Number of source columns.

Definition at line 163 of file qgsrasterprojector.h.

Referenced by approximateSrcRowCol(), calcSrcRowsCols(), preciseSrcRowCol(), QgsRasterProjector(), setSrcCols(), and srcCols().

QgsCoordinateReferenceSystem QgsRasterProjector::mSrcCRS [private]

Source CRS.

Definition at line 130 of file qgsrasterprojector.h.

QgsRectangle QgsRasterProjector::mSrcExtent [private]

Source extent.

Definition at line 142 of file qgsrasterprojector.h.

Referenced by approximateSrcRowCol(), calcSrcExtent(), calcSrcRowsCols(), preciseSrcRowCol(), QgsRasterProjector(), setSrcCols(), setSrcRows(), and srcExtent().

int QgsRasterProjector::mSrcRows [private]

Number of source rows.

Definition at line 160 of file qgsrasterprojector.h.

Referenced by approximateSrcRowCol(), calcSrcRowsCols(), preciseSrcRowCol(), QgsRasterProjector(), setSrcRows(), and srcRows().

double QgsRasterProjector::mSrcXRes [private]

Source x resolution.

Definition at line 166 of file qgsrasterprojector.h.

Referenced by approximateSrcRowCol(), preciseSrcRowCol(), QgsRasterProjector(), and setSrcRows().

double QgsRasterProjector::mSrcYRes [private]

Source y resolution.

Definition at line 169 of file qgsrasterprojector.h.

Referenced by approximateSrcRowCol(), preciseSrcRowCol(), QgsRasterProjector(), and setSrcCols().

QgsPoint* QgsRasterProjector::pHelperBottom [private]

Array of source points for each destination column on bottom of current CPMatrix grid row.

Definition at line 186 of file qgsrasterprojector.h.

Referenced by approximateSrcRowCol(), nextHelper(), and QgsRasterProjector().

QgsPoint* QgsRasterProjector::pHelperTop [private]

Array of source points for each destination column on top of current CPMatrix grid row.

Definition at line 182 of file qgsrasterprojector.h.

Referenced by approximateSrcRowCol(), nextHelper(), and QgsRasterProjector().

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

src/core/qgsrasterprojector.h
src/core/qgsrasterprojector.cpp

Public Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation