Generic GDAL-based dataset. More...

#include <charts/CChartGDAL.hpp>

Inheritance diagram for CChartGDAL:

Public Types
enum	EColorEncoding { GRAY , GRAY_U16 , GRAY_S16 , GRAY_U32 , GRAY_S32 , GRAY_F32 , GRAY_F64 , PALETTE_GRAY , PALETTE_RGB , PALETTE_CMYK , PALETTE_HSL , ARGB , RGB , YUV }
	Underlying GDAL dataset color encoding IDs. More...

Public Member Functions
QVCT::EStatus	getStatus () const
	Returns the chart internal status (after constructing object) More...

QString	getFileName () const
	Returns the chart (GDAL dataset) file name. More...

QRect	getDatGeometry () const
	Returns the chart (GDAL dataset) geometry (size) More...

EColorEncoding	getColorEncoding () const
	Returns the chart (GDAL dataset) color encoding. More...

QPointF	getDatPosition () const
	Returns the last drawn chart (GDAL dataset) center pixel position. More...

double	getZoom () const
	Returns the last drawn chart (GDAL dataset) zoom factor. More...

CDataPosition	toGeoPosition (const QPointF &_rqPointFDatPosition) const
	Converts the given chart pixel position to geographical position. More...

QPointF	toDatPosition (const CDataPosition &_roGeoPosition) const
	Converts the given (geographical) position [long,lat,elev] to chart (GDAL dataset) point [px]. More...

double	getResolution (const QPointF &_rqPointFDatPosition) const
	Returns the resolution at given chart (GDAL dataset) point [px], in meters per pixel [m/px]. More...

void	draw (QPainter *_pqPainter, const QPointF &_rqPointFDatPosition, double _fdZoom)
	Draws chart, centered on given chart (GDAL dataset) point [px] and zoomed according to given factor. More...

void	move (const QPointF &_rqPointFDatPosition, double _fdZoom)
	Moves the chart, centered on given chart (GDAL dataset) point [px] and zoomed according to given factor. More...

Protected Member Functions
	CChartGDAL ()

virtual	~CChartGDAL ()

void	open (const QString &_rqsFileName)
	Opens the underlying GDAL dataset. More...

virtual void	rasterBuffer (QImage *_pqImage, const QVector< quint16 > &_rqVector) const
	Rasterizes UInt16 buffer. More...

virtual void	rasterBuffer (QImage *_pqImage, const QVector< qint16 > &_rqVector) const
	Rasterizes Int16 buffer. More...

virtual void	rasterBuffer (QImage *_pqImage, const QVector< quint32 > &_rqVector) const
	Rasterizes UInt32 buffer. More...

virtual void	rasterBuffer (QImage *_pqImage, const QVector< qint32 > &_rqVector) const
	Rasterizes Int32 buffer. More...

virtual void	rasterBuffer (QImage *_pqImage, const QVector< float > &_rqVector) const
	Rasterizes Float32 buffer. More...

virtual void	rasterBuffer (QImage *_pqImage, const QVector< double > &_rqVector) const
	Rasterizes Float64 buffer. More...

Protected Attributes
QVCT::EStatus	eStatus
	Chart internal status. More...

QString	qsFileName
	Chart (GDAL dataset) file name. More...

QRect	qRectGeometry
	Chart (GDAL dataset) geometry (size) More...

EColorEncoding	eColorEncoding
	Chart (GDAL dataset) color encoding. More...

QPointF	qPointFDatPositionWished
	Last drawn chart (GDAL dataset) center pixel position (requested by user) More...

QPointF	qPointFDatPositionActual
	Last drawn chart (GDAL dataset) center pixel position (actually rendered) More...

double	fdZoomWished
	Last drawn chart (GDAL dataset) zoom factor (requested by user) More...

double	fdZoomActual
	Last drawn chart (GDAL dataset) zoom factor (actually rendered) More...

GDALDataset *	poGDALDataset
	Underlying GDAL dataset. More...

void *	pGDALProjectionTransformer
	Underlying GDAL dataset projection transformer (to internal WGS84) More...

int *	piGDALBandMap
	Underlying GDAL dataset band mapping (for ARGB/RGB/YUV color encodings) More...

QPixmap	qPixmapBuffer
	Pixmap buffer where the chart (GDAL dataset) is rendered (rasterized) More...

QVector< QRgb >	qColorTable
	Color table (for GRAY/PALETTE_* color encodings) More...

Detailed Description

Generic GDAL-based dataset.

This class defines the generic resources to wrap a GDAL dataset and use it as a chart along Qt drawing resources (QPainter, QImage, etc.).

The GDAL dataset internal projection data are used to convert pixel to geographical coordinates and vice-versa (using QVCT internal Longitude/Latitude WGS84 reference).

In order to improve I/O performances, rendering (rasterization) is performed only when necessary (the rendering buffer being cached between calls to the drawing primitive).

Author: Cedric Dufour http://cedric.dufour.name

Definition at line 52 of file CChartGDAL.hpp.

Member Enumeration Documentation

◆ EColorEncoding

enum CChartGDAL::EColorEncoding

Underlying GDAL dataset color encoding IDs.

Enumerator
GRAY
GRAY_U16
GRAY_S16
GRAY_U32
GRAY_S32
GRAY_F32
GRAY_F64
PALETTE_GRAY
PALETTE_RGB
PALETTE_CMYK
PALETTE_HSL
ARGB
RGB
YUV

Definition at line 61 of file CChartGDAL.hpp.

Constructor & Destructor Documentation

◆ CChartGDAL()

CChartGDAL::CChartGDAL ( )

protected

Definition at line 47 of file CChartGDAL.cpp.

◆ ~CChartGDAL()

CChartGDAL::~CChartGDAL ( )

protectedvirtual

Definition at line 54 of file CChartGDAL.cpp.

Member Function Documentation

◆ open()

void CChartGDAL::open ( const QString & _rqsFileName )

protected

Opens the underlying GDAL dataset.

Definition at line 61 of file CChartGDAL.cpp.

◆ getStatus()

QVCT::EStatus CChartGDAL::getStatus ( ) const

inline

Returns the chart internal status (after constructing object)

Definition at line 132 of file CChartGDAL.hpp.

◆ getFileName()

QString CChartGDAL::getFileName ( ) const

inline

Returns the chart (GDAL dataset) file name.

Definition at line 134 of file CChartGDAL.hpp.

◆ getDatGeometry()

QRect CChartGDAL::getDatGeometry ( ) const

inline

Returns the chart (GDAL dataset) geometry (size)

Definition at line 136 of file CChartGDAL.hpp.

◆ getColorEncoding()

EColorEncoding CChartGDAL::getColorEncoding ( ) const

inline

Returns the chart (GDAL dataset) color encoding.

Definition at line 138 of file CChartGDAL.hpp.

◆ getDatPosition()

QPointF CChartGDAL::getDatPosition ( ) const

inline

Returns the last drawn chart (GDAL dataset) center pixel position.

Definition at line 140 of file CChartGDAL.hpp.

◆ getZoom()

double CChartGDAL::getZoom ( ) const

inline

Returns the last drawn chart (GDAL dataset) zoom factor.

Definition at line 142 of file CChartGDAL.hpp.

◆ toGeoPosition()

CDataPosition CChartGDAL::toGeoPosition ( const QPointF & _rqPointFDatPosition ) const

Converts the given chart pixel position to geographical position.

Definition at line 356 of file CChartGDAL.cpp.

◆ toDatPosition()

QPointF CChartGDAL::toDatPosition ( const CDataPosition & _roGeoPosition ) const

Converts the given (geographical) position [long,lat,elev] to chart (GDAL dataset) point [px].

Definition at line 368 of file CChartGDAL.cpp.

◆ getResolution()

double CChartGDAL::getResolution ( const QPointF & _rqPointFDatPosition ) const

Returns the resolution at given chart (GDAL dataset) point [px], in meters per pixel [m/px].

Definition at line 383 of file CChartGDAL.cpp.

◆ draw()

void CChartGDAL::draw	(	QPainter *	_pqPainter,
		const QPointF &	_rqPointFDatPosition,
		double	_fdZoom
	)

Draws chart, centered on given chart (GDAL dataset) point [px] and zoomed according to given factor.

Definition at line 392 of file CChartGDAL.cpp.

◆ move()

void CChartGDAL::move	(	const QPointF &	_rqPointFDatPosition,
		double	_fdZoom
	)

Moves the chart, centered on given chart (GDAL dataset) point [px] and zoomed according to given factor.

Definition at line 683 of file CChartGDAL.cpp.

◆ rasterBuffer() [1/6]

void CChartGDAL::rasterBuffer	(	QImage *	_pqImage,
		const QVector< quint16 > &	_rqVector
	)		const

protectedvirtual

Rasterizes UInt16 buffer.

Reimplemented in CChartGDALElevation.

Definition at line 690 of file CChartGDAL.cpp.

◆ rasterBuffer() [2/6]

void CChartGDAL::rasterBuffer	(	QImage *	_pqImage,
		const QVector< qint16 > &	_rqVector
	)		const

protectedvirtual

Rasterizes Int16 buffer.

Reimplemented in CChartGDALElevation.

Definition at line 699 of file CChartGDAL.cpp.

◆ rasterBuffer() [3/6]

void CChartGDAL::rasterBuffer	(	QImage *	_pqImage,
		const QVector< quint32 > &	_rqVector
	)		const

protectedvirtual

Rasterizes UInt32 buffer.

Reimplemented in CChartGDALElevation.

Definition at line 708 of file CChartGDAL.cpp.

◆ rasterBuffer() [4/6]

void CChartGDAL::rasterBuffer	(	QImage *	_pqImage,
		const QVector< qint32 > &	_rqVector
	)		const

protectedvirtual

Rasterizes Int32 buffer.

Reimplemented in CChartGDALElevation.

Definition at line 717 of file CChartGDAL.cpp.

◆ rasterBuffer() [5/6]

void CChartGDAL::rasterBuffer	(	QImage *	_pqImage,
		const QVector< float > &	_rqVector
	)		const

protectedvirtual

Rasterizes Float32 buffer.

Reimplemented in CChartGDALElevation.

Definition at line 726 of file CChartGDAL.cpp.

◆ rasterBuffer() [6/6]

void CChartGDAL::rasterBuffer	(	QImage *	_pqImage,
		const QVector< double > &	_rqVector
	)		const

protectedvirtual

Rasterizes Float64 buffer.

Reimplemented in CChartGDALElevation.

Definition at line 735 of file CChartGDAL.cpp.

Member Data Documentation

◆ eStatus

QVCT::EStatus CChartGDAL::eStatus

protected

Chart internal status.

Definition at line 75 of file CChartGDAL.hpp.

◆ qsFileName

QString CChartGDAL::qsFileName

protected

Chart (GDAL dataset) file name.

Definition at line 77 of file CChartGDAL.hpp.

◆ qRectGeometry

QRect CChartGDAL::qRectGeometry

protected

Chart (GDAL dataset) geometry (size)

Definition at line 79 of file CChartGDAL.hpp.

◆ eColorEncoding

EColorEncoding CChartGDAL::eColorEncoding

protected

Chart (GDAL dataset) color encoding.

Definition at line 81 of file CChartGDAL.hpp.

◆ qPointFDatPositionWished

QPointF CChartGDAL::qPointFDatPositionWished

protected

Last drawn chart (GDAL dataset) center pixel position (requested by user)

Definition at line 83 of file CChartGDAL.hpp.

◆ qPointFDatPositionActual

QPointF CChartGDAL::qPointFDatPositionActual

protected

Last drawn chart (GDAL dataset) center pixel position (actually rendered)

Definition at line 85 of file CChartGDAL.hpp.

◆ fdZoomWished

double CChartGDAL::fdZoomWished

protected

Last drawn chart (GDAL dataset) zoom factor (requested by user)

Definition at line 87 of file CChartGDAL.hpp.

◆ fdZoomActual

double CChartGDAL::fdZoomActual

protected

Last drawn chart (GDAL dataset) zoom factor (actually rendered)

Definition at line 89 of file CChartGDAL.hpp.

◆ poGDALDataset

GDALDataset* CChartGDAL::poGDALDataset

protected

Underlying GDAL dataset.

Definition at line 96 of file CChartGDAL.hpp.

◆ pGDALProjectionTransformer

void* CChartGDAL::pGDALProjectionTransformer

protected

Underlying GDAL dataset projection transformer (to internal WGS84)

Definition at line 98 of file CChartGDAL.hpp.

◆ piGDALBandMap

int* CChartGDAL::piGDALBandMap

protected

Underlying GDAL dataset band mapping (for ARGB/RGB/YUV color encodings)

Definition at line 100 of file CChartGDAL.hpp.

◆ qPixmapBuffer

QPixmap CChartGDAL::qPixmapBuffer

protected

Pixmap buffer where the chart (GDAL dataset) is rendered (rasterized)

Definition at line 107 of file CChartGDAL.hpp.

◆ qColorTable

QVector<QRgb> CChartGDAL::qColorTable

protected

Color table (for GRAY/PALETTE_* color encodings)

Definition at line 109 of file CChartGDAL.hpp.

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

charts/CChartGDAL.hpp
charts/CChartGDAL.cpp

Public Types

Public Member Functions

Protected Member Functions

Protected Attributes

Detailed Description

Member Enumeration Documentation

◆ EColorEncoding

Constructor & Destructor Documentation

◆ CChartGDAL()

◆ ~CChartGDAL()

Member Function Documentation

◆ open()

◆ getStatus()

◆ getFileName()

◆ getDatGeometry()

◆ getColorEncoding()

◆ getDatPosition()

◆ getZoom()

◆ toGeoPosition()

◆ toDatPosition()

◆ getResolution()

◆ draw()

◆ move()

◆ rasterBuffer() [1/6]

◆ rasterBuffer() [2/6]

◆ rasterBuffer() [3/6]

◆ rasterBuffer() [4/6]

◆ rasterBuffer() [5/6]

◆ rasterBuffer() [6/6]

Member Data Documentation

◆ eStatus

◆ qsFileName

◆ qRectGeometry

◆ eColorEncoding

◆ qPointFDatPositionWished

◆ qPointFDatPositionActual

◆ fdZoomWished

◆ fdZoomActual

◆ poGDALDataset

◆ pGDALProjectionTransformer

◆ piGDALBandMap

◆ qPixmapBuffer

◆ qColorTable