#include <qgsrasterprojector.h>

Inheritance diagram for QgsRasterProjector:

Collaboration diagram for QgsRasterProjector:

Public Member Functions
	QgsRasterProjector (QgsCoordinateReferenceSystem theSrcCRS, QgsCoordinateReferenceSystem theDestCRS, int theSrcDatumTransform, int theDestDatumTransform, 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 (QgsCoordinateReferenceSystem theSrcCRS, QgsCoordinateReferenceSystem theDestCRS, QgsRectangle theDestExtent, int theDestRows, int theDestCols, double theMaxSrcXRes, double theMaxSrcYRes, QgsRectangle theExtent)
	QgsRasterProjector (QgsCoordinateReferenceSystem theSrcCRS, QgsCoordinateReferenceSystem theDestCRS, double theMaxSrcXRes, double theMaxSrcYRes, QgsRectangle theExtent)
	QgsRasterProjector ()
	QgsRasterProjector (const QgsRasterProjector &projector)
	Copy constructor.
	~QgsRasterProjector ()
	The destructor.
QgsRasterProjector &	operator= (const QgsRasterProjector &projector)
QgsRasterInterface *	clone () const
	Clone itself, create deep copy.
int	bandCount () const
	Get number of bands.
QGis::DataType	dataType (int bandNo) const
	Returns data type for the band specified by number.
void	setCRS (const QgsCoordinateReferenceSystem &theSrcCRS, const QgsCoordinateReferenceSystem &theDestCRS, int srcDatumTransform=-1, int destDatumTransform=-1)
	set source and destination CRS
QgsCoordinateReferenceSystem	srcCrs () const
	Get source CRS.
QgsCoordinateReferenceSystem	destCrs () const
	Get destination CRS.
void	setMaxSrcRes (double theMaxSrcXRes, double theMaxSrcYRes)
	set maximum source resolution
QgsRasterBlock *	block (int bandNo, const QgsRectangle &extent, int width, int height)
	Read block of data using given extent and size.
Public Member Functions inherited from QgsRasterInterface
	QgsRasterInterface (QgsRasterInterface *input=0)
virtual	~QgsRasterInterface ()
virtual int	capabilities () const
	Returns a bitmask containing the supported capabilities.
QString	capabilitiesString () const
	Returns the above in friendly format.
virtual QGis::DataType	srcDataType (int bandNo) const
	Returns source data type for the band specified by number, source data type may be shorter than dataType.
virtual QgsRectangle	extent ()
	Get the extent of the interface.
int	dataTypeSize (int bandNo)
virtual int	xBlockSize () const
	Get block size.
virtual int	yBlockSize () const
virtual int	xSize () const
	Get raster size.
virtual int	ySize () const
virtual QString	generateBandName (int theBandNumber) const
	helper function to create zero padded band names
virtual bool	setInput (QgsRasterInterface *input)
	Set input.
virtual QgsRasterInterface *	input () const
	Current input.
virtual bool	on () const
	Is on/off.
virtual void	setOn (bool on)
	Set on/off.
virtual const QgsRasterInterface *	srcInput () const
	Get source / raw input, the first in pipe, usually provider.
virtual QgsRasterInterface *	srcInput ()
virtual QgsRasterBandStats	bandStatistics (int theBandNo, int theStats=QgsRasterBandStats::All, const QgsRectangle &theExtent=QgsRectangle(), int theSampleSize=0)
	Get band statistics.
virtual bool	hasStatistics (int theBandNo, int theStats=QgsRasterBandStats::All, const QgsRectangle &theExtent=QgsRectangle(), int theSampleSize=0)
	Returns true if histogram is available (cached, already calculated).
virtual QgsRasterHistogram	histogram (int theBandNo, int theBinCount=0, double theMinimum=std::numeric_limits< double >::quiet_NaN(), double theMaximum=std::numeric_limits< double >::quiet_NaN(), const QgsRectangle &theExtent=QgsRectangle(), int theSampleSize=0, bool theIncludeOutOfRange=false)
	Get histogram.
virtual bool	hasHistogram (int theBandNo, int theBinCount, double theMinimum=std::numeric_limits< double >::quiet_NaN(), double theMaximum=std::numeric_limits< double >::quiet_NaN(), const QgsRectangle &theExtent=QgsRectangle(), int theSampleSize=0, bool theIncludeOutOfRange=false)
	Returns true if histogram is available (cached, already calculated), the parameters are the same as in histogram()
virtual void	cumulativeCut (int theBandNo, double theLowerCount, double theUpperCount, double &theLowerValue, double &theUpperValue, const QgsRectangle &theExtent=QgsRectangle(), int theSampleSize=0)
	Find values for cumulative pixel count cut.
virtual void	writeXML (QDomDocument &doc, QDomElement &parentElem) const
	Write base class members to xml.
virtual void	readXML (const QDomElement &filterElem)
	Sets base class members from xml.

Private Member Functions
QgsRectangle	srcExtent ()
	get source extent
int	srcRows ()
	get/set source width/height
int	srcCols ()
void	setSrcRows (int theRows)
void	setSrcCols (int theCols)
bool	srcRowCol (int theDestRow, int theDestCol, int theSrcRow, int theSrcCol, const QgsCoordinateTransform *ct)
	Get source row and column indexes for current source extent and resolution If source pixel is outside source extent theSrcRow and theSrcCol are left unchanged.
int	dstRows () const
int	dstCols () const
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
bool	preciseSrcRowCol (int theDestRow, int theDestCol, int theSrcRow, int theSrcCol, const QgsCoordinateTransform *ct)
	Get precise source row and column indexes for current source extent and resolution.
bool	approximateSrcRowCol (int theDestRow, int theDestCol, int theSrcRow, int theSrcCol)
	Get approximate source row and column indexes for current source extent and resolution.
void	calc ()
	Calculate matrix.
void	insertRows (const QgsCoordinateTransform *ct)
	insert rows to matrix
void	insertCols (const QgsCoordinateTransform *ct)
	insert columns to matrix
void	calcCP (int theRow, int theCol, const QgsCoordinateTransform *ct)
bool	calcRow (int theRow, const QgsCoordinateTransform *ct)
	calculate matrix row
bool	calcCol (int theCol, const QgsCoordinateTransform *ct)
	calculate matrix column
void	calcSrcExtent ()
	calculate source extent
void	calcSrcRowsCols ()
	calculate minimum source width and height
bool	checkCols (const QgsCoordinateTransform *ct)
	check error along columns returns true if within threshold
bool	checkRows (const QgsCoordinateTransform *ct)
	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.
QString	cpToString ()
	get mCPMatrix as string

Private Attributes
QgsCoordinateReferenceSystem	mSrcCRS
	Source CRS.
QgsCoordinateReferenceSystem	mDestCRS
	Destination CRS.
int	mSrcDatumTransform
	Source datum transformation id (or -1 if none)
int	mDestDatumTransform
	Destination datum transformation id (or -1 if none)
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.
QList< QList< bool > >	mCPLegalMatrix
	Grid of source control points transformation possible indicator.
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.

Additional Inherited Members
Public Types inherited from QgsRasterInterface
enum	Capability { NoCapabilities = 0, Size = 1 << 1, Create = 1 << 2, Remove = 1 << 3, BuildPyramids = 1 << 4, Identify = 1 << 5, IdentifyValue = 1 << 6, IdentifyText = 1 << 7, IdentifyHtml = 1 << 8, IdentifyFeature = 1 << 9 }
	If you add to this, please also add to capabilitiesString() More...
Protected Member Functions inherited from QgsRasterInterface
void	initHistogram (QgsRasterHistogram &theHistogram, int theBandNo, int theBinCount=0, double theMinimum=std::numeric_limits< double >::quiet_NaN(), double theMaximum=std::numeric_limits< double >::quiet_NaN(), const QgsRectangle &theExtent=QgsRectangle(), int theSampleSize=0, bool theIncludeOutOfRange=false)
	Fill in histogram defaults if not specified.
void	initStatistics (QgsRasterBandStats &theStatistics, int theBandNo, int theStats=QgsRasterBandStats::All, const QgsRectangle &theExtent=QgsRectangle(), int theBinCount=0)
	Fill in statistics defaults if not specified.
Protected Attributes inherited from QgsRasterInterface
QgsRasterInterface *	mInput
QList< QgsRasterBandStats >	mStatistics
	List of cached statistics, all bands mixed.
QList< QgsRasterHistogram >	mHistograms
	List of cached histograms, all bands mixed.
bool	mOn

Detailed Description

Definition at line 38 of file qgsrasterprojector.h.

Constructor & Destructor Documentation

QgsRasterProjector::QgsRasterProjector	(	QgsCoordinateReferenceSystem	theSrcCRS,
		QgsCoordinateReferenceSystem	theDestCRS,
		int	theSrcDatumTransform,
		int	theDestDatumTransform,
		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 24 of file qgsrasterprojector.cpp.

References calc(), QgsDebugMsg, and QgsRectangle::toString().

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

Definition at line 50 of file qgsrasterprojector.cpp.

References calc(), QgsDebugMsg, and QgsRectangle::toString().

QgsRasterProjector::QgsRasterProjector	(	QgsCoordinateReferenceSystem	theSrcCRS,
		QgsCoordinateReferenceSystem	theDestCRS,
		double	theMaxSrcXRes,
		double	theMaxSrcYRes,
		QgsRectangle	theExtent
	)

Definition at line 74 of file qgsrasterprojector.cpp.

References QgsDebugMsg.

QgsRasterProjector::QgsRasterProjector ( )

Definition at line 91 of file qgsrasterprojector.cpp.

References QgsDebugMsg.

Referenced by clone().

QgsRasterProjector::QgsRasterProjector ( const QgsRasterProjector & projector )

Copy constructor.

Definition at line 97 of file qgsrasterprojector.cpp.

References mDestCRS, mDestDatumTransform, mExtent, mMaxSrcXRes, mMaxSrcYRes, mSrcCRS, and mSrcDatumTransform.

QgsRasterProjector::~QgsRasterProjector ( )

The destructor.

Definition at line 133 of file qgsrasterprojector.cpp.

References pHelperBottom, and pHelperTop.

Member Function Documentation

bool QgsRasterProjector::approximateSrcRowCol	(	int	theDestRow,
		int	theDestCol,
		int *	theSrcRow,
		int *	theSrcCol
	)

inlineprivate

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

Definition at line 531 of file qgsrasterprojector.cpp.

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

Referenced by srcRowCol().

int QgsRasterProjector::bandCount ( ) const

virtual

Get number of bands.

Implements QgsRasterInterface.

Definition at line 139 of file qgsrasterprojector.cpp.

References QgsRasterInterface::bandCount(), and QgsRasterInterface::mInput.

QgsRasterBlock * QgsRasterProjector::block	(	int	bandNo,
		const QgsRectangle &	extent,
		int	width,
		int	height
	)

virtual

Read block of data using given extent and size.

Returns pointer to data. Caller is responsible to free the memory returned.

Parameters

bandNo	band number
extent	extent of block
width	pixel width of block
height	pixel height of block

Implements QgsRasterInterface.

Definition at line 767 of file qgsrasterprojector.cpp.

References QgsCoordinateReferenceSystem::authid(), QgsRasterBlock::bits(), QgsRasterInterface::block(), calc(), QgsRasterInterface::dataType(), QgsRasterBlock::dataType(), QgsRasterInterface::extent(), QgsRasterBlock::hasNoData(), QgsRasterBlock::hasNoDataValue(), QgsCoordinateTransformCache::instance(), QgsRasterBlock::isEmpty(), QgsRasterBlock::isNoData(), QgsCoordinateReferenceSystem::isValid(), mApproximate, mDestCols, mDestCRS, mDestDatumTransform, mDestExtent, mDestRows, QgsRasterInterface::mInput, mSrcCols, mSrcCRS, mSrcDatumTransform, QgsRasterBlock::noDataValue(), QgsDebugMsg, QgsDebugMsgLevel, QgsRasterBlock::setIsNoData(), srcCols(), srcExtent(), srcRowCol(), srcRows(), QgsRectangle::toString(), QgsCoordinateTransformCache::transform(), QgsRasterBlock::typeIsNumeric(), and QgsRasterBlock::typeSize().

void QgsRasterProjector::calc ( )

private

Calculate matrix.

Definition at line 161 of file qgsrasterprojector.cpp.

References QgsCoordinateReferenceSystem::authid(), calcHelper(), calcRow(), calcSrcExtent(), calcSrcRowsCols(), QgsRasterInterface::capabilities(), checkCols(), checkRows(), cpToString(), QgsRasterDataProvider::extent(), QgsRectangle::height(), insertCols(), insertRows(), QgsCoordinateTransformCache::instance(), QgsRectangle::isEmpty(), mApproximate, mCPCols, mCPLegalMatrix, mCPMatrix, mCPRows, mDestCols, mDestColsPerMatrixCol, mDestCRS, mDestDatumTransform, mDestExtent, mDestRows, mDestRowsPerMatrixRow, mDestXRes, mDestYRes, mExtent, mHelperTopRow, QgsRasterInterface::mInput, mMaxSrcXRes, mMaxSrcYRes, mSqrTolerance, mSrcCols, mSrcCRS, mSrcDatumTransform, mSrcExtent, mSrcRows, mSrcXRes, mSrcYRes, pHelperBottom, pHelperTop, QgsDebugMsg, QgsDebugMsgLevel, QgsRasterInterface::Size, QgsRasterInterface::srcInput(), QgsCoordinateTransformCache::transform(), QgsRectangle::width(), QgsRasterInterface::xSize(), and QgsRasterInterface::ySize().

Referenced by block(), and QgsRasterProjector().

bool QgsRasterProjector::calcCol	(	int	theCol,
		const QgsCoordinateTransform *	ct
	)

private

calculate matrix column

Definition at line 666 of file qgsrasterprojector.cpp.

References calcCP(), mCPRows, and QgsDebugMsgLevel.

Referenced by insertCols().

void QgsRasterProjector::calcCP	(	int	theRow,
		int	theCol,
		const QgsCoordinateTransform *	ct
	)

private

Definition at line 630 of file qgsrasterprojector.cpp.

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

Referenced by calcCol(), and calcRow().

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

private

Calculate array of src helper points.

Definition at line 434 of file qgsrasterprojector.cpp.

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

Referenced by calc(), and nextHelper().

bool QgsRasterProjector::calcRow	(	int	theRow,
		const QgsCoordinateTransform *	ct
	)

private

calculate matrix row

Definition at line 655 of file qgsrasterprojector.cpp.

References calcCP(), mCPCols, and QgsDebugMsgLevel.

Referenced by calc(), and insertRows().

void QgsRasterProjector::calcSrcExtent ( )

private

calculate source extent

Definition at line 270 of file qgsrasterprojector.cpp.

References QgsRectangle::combineExtentWith(), QgsRectangle::intersect(), QgsRectangle::isEmpty(), mCPCols, mCPLegalMatrix, 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 calc().

void QgsRasterProjector::calcSrcRowsCols ( )

private

calculate minimum source width and height

Definition at line 357 of file qgsrasterprojector.cpp.

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

Referenced by calc().

bool QgsRasterProjector::checkCols ( const QgsCoordinateTransform * ct )

private

check error along columns returns true if within threshold

Definition at line 677 of file qgsrasterprojector.cpp.

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

Referenced by calc().

bool QgsRasterProjector::checkRows ( const QgsCoordinateTransform * ct )

private

check error along rows returns true if within threshold

Definition at line 722 of file qgsrasterprojector.cpp.

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

Referenced by calc().

QgsRasterInterface * QgsRasterProjector::clone ( ) const

virtual

Clone itself, create deep copy.

Implements QgsRasterInterface.

Definition at line 124 of file qgsrasterprojector.cpp.

References mDestCRS, mDestDatumTransform, mExtent, mMaxSrcXRes, mMaxSrcYRes, mSrcCRS, mSrcDatumTransform, QgsDebugMsg, and QgsRasterProjector().

QString QgsRasterProjector::cpToString ( )

private

get mCPMatrix as string

Definition at line 332 of file qgsrasterprojector.cpp.

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

Referenced by calc().

QGis::DataType QgsRasterProjector::dataType ( int bandNo ) const

virtual

Returns data type for the band specified by number.

Implements QgsRasterInterface.

Definition at line 146 of file qgsrasterprojector.cpp.

References QgsRasterInterface::dataType(), QgsRasterInterface::mInput, and QGis::UnknownDataType.

QgsCoordinateReferenceSystem QgsRasterProjector::destCrs ( ) const

inline

Get destination CRS.

Definition at line 96 of file qgsrasterprojector.h.

Referenced by QgsRasterFileWriter::writeDataRaster().

void QgsRasterProjector::destPointOnCPMatrix	(	int	theRow,
		int	theCol,
		double *	theX,
		double *	theY
	)

inlineprivate

get destination point for current destination position

Definition at line 412 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().

int QgsRasterProjector::dstCols ( ) const

inlineprivate

Definition at line 123 of file qgsrasterprojector.h.

int QgsRasterProjector::dstRows ( ) const

inlineprivate

Definition at line 122 of file qgsrasterprojector.h.

void QgsRasterProjector::insertCols ( const QgsCoordinateTransform * ct )

private

insert columns to matrix

Definition at line 610 of file qgsrasterprojector.cpp.

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

Referenced by calc().

void QgsRasterProjector::insertRows ( const QgsCoordinateTransform * ct )

private

insert rows to matrix

Definition at line 588 of file qgsrasterprojector.cpp.

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

Referenced by calc().

int QgsRasterProjector::matrixCol ( int theDestCol )

inlineprivate

Definition at line 422 of file qgsrasterprojector.cpp.

References mDestColsPerMatrixCol.

Referenced by approximateSrcRowCol(), and calcHelper().

int QgsRasterProjector::matrixRow ( int theDestRow )

inlineprivate

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

Definition at line 418 of file qgsrasterprojector.cpp.

References mDestRowsPerMatrixRow.

Referenced by approximateSrcRowCol().

void QgsRasterProjector::nextHelper ( )

private

Calc / switch helper.

Definition at line 459 of file qgsrasterprojector.cpp.

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

Referenced by approximateSrcRowCol().

QgsRasterProjector & QgsRasterProjector::operator= ( const QgsRasterProjector & projector )

Definition at line 109 of file qgsrasterprojector.cpp.

References mDestCRS, mDestDatumTransform, mExtent, mMaxSrcXRes, mMaxSrcYRes, mSrcCRS, and mSrcDatumTransform.

bool QgsRasterProjector::preciseSrcRowCol	(	int	theDestRow,
		int	theDestCol,
		int *	theSrcRow,
		int *	theSrcCol,
		const QgsCoordinateTransform *	ct
	)

inlineprivate

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

Definition at line 482 of file qgsrasterprojector.cpp.

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

Referenced by srcRowCol().

void QgsRasterProjector::setCRS	(	const QgsCoordinateReferenceSystem &	theSrcCRS,
		const QgsCoordinateReferenceSystem &	theDestCRS,
		int	srcDatumTransform = `-1`,
		int	destDatumTransform = `-1`
	)

set source and destination CRS

Definition at line 153 of file qgsrasterprojector.cpp.

References mDestCRS, mDestDatumTransform, mSrcCRS, and mSrcDatumTransform.

Referenced by QgsRasterLayer::draw().

void QgsRasterProjector::setMaxSrcRes	(	double	theMaxSrcXRes,
		double	theMaxSrcYRes
	)

inline

set maximum source resolution

Definition at line 99 of file qgsrasterprojector.h.

void QgsRasterProjector::setSrcCols ( int theCols )

inlineprivate

Definition at line 114 of file qgsrasterprojector.h.

void QgsRasterProjector::setSrcRows ( int theRows )

inlineprivate

Definition at line 113 of file qgsrasterprojector.h.

int QgsRasterProjector::srcCols ( )

inlineprivate

Definition at line 112 of file qgsrasterprojector.h.

Referenced by block().

QgsCoordinateReferenceSystem QgsRasterProjector::srcCrs ( ) const

inline

Get source CRS.

Definition at line 93 of file qgsrasterprojector.h.

Referenced by QgsRasterFileWriter::writeDataRaster().

QgsRectangle QgsRasterProjector::srcExtent ( )

inlineprivate

get source extent

Definition at line 108 of file qgsrasterprojector.h.

Referenced by block().

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

private

get destination point for current matrix position

Definition at line 427 of file qgsrasterprojector.cpp.

bool QgsRasterProjector::srcRowCol	(	int	theDestRow,
		int	theDestCol,
		int *	theSrcRow,
		int *	theSrcCol,
		const QgsCoordinateTransform *	ct
	)

private

Get source row and column indexes for current source extent and resolution If source pixel is outside source extent theSrcRow and theSrcCol are left unchanged.