QwtCPointerData Class Reference

Inheritance diagram for QwtCPointerData:

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Collaboration diagram for QwtCPointerData:

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List of all members.

Detailed Description

Data class containing two pointers to memory blocks of doubles.

Definition at line 144 of file qwt_data.h.

Public Member Functions

 QwtCPointerData (const double *x, const double *y, size_t size)
QwtCPointerDataoperator= (const QwtCPointerData &)
virtual QwtDatacopy () const
virtual size_t size () const
virtual double x (size_t i) const
virtual double y (size_t i) const
const double * xData () const
const double * yData () const
virtual QwtDoubleRect boundingRect () const


Constructor & Destructor Documentation

QwtCPointerData::QwtCPointerData ( const double *  x,
const double *  y,
size_t  size 
)

Constructor

Parameters:
x Array of x values
y Array of y values
size Size of the x and y arrays
Warning:
The programmer must assure that the memory blocks referenced by the pointers remain valid during the lifetime of the QwtPlotCPointer object.
See also:
QwtPlotCurve::setData(), QwtPlotCurve::setRawData()

Definition at line 281 of file qwt_data.cpp.

Referenced by copy().


Member Function Documentation

QwtCPointerData & QwtCPointerData::operator= ( const QwtCPointerData  ) 

Assignment.

Definition at line 290 of file qwt_data.cpp.

References d_size, d_x, and d_y.

QwtData * QwtCPointerData::copy (  )  const [virtual]

Returns:
Pointer to a copy (virtual copy constructor)

Implements QwtData.

Definition at line 344 of file qwt_data.cpp.

References QwtCPointerData().

size_t QwtCPointerData::size (  )  const [virtual]

Returns:
Size of the data set

Implements QwtData.

Definition at line 302 of file qwt_data.cpp.

Referenced by boundingRect().

double QwtCPointerData::x ( size_t  i  )  const [virtual]

Return the x value of data point i

Parameters:
i Index
Returns:
x X value of data point i

Implements QwtData.

Definition at line 313 of file qwt_data.cpp.

double QwtCPointerData::y ( size_t  i  )  const [virtual]

Return the y value of data point i

Parameters:
i Index
Returns:
y Y value of data point i

Implements QwtData.

Definition at line 324 of file qwt_data.cpp.

const double * QwtCPointerData::xData (  )  const

Returns:
Array of the x-values

Definition at line 330 of file qwt_data.cpp.

const double * QwtCPointerData::yData (  )  const

Returns:
Array of the y-values

Definition at line 336 of file qwt_data.cpp.

QwtDoubleRect QwtCPointerData::boundingRect (  )  const [virtual]

Returns the bounding rectangle of the data. If there is no bounding rect, like for empty data the rectangle is invalid: QwtDoubleRect::isValid() == false

Reimplemented from QwtData.

Definition at line 354 of file qwt_data.cpp.

References size().


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