trusty (3) QwtCPointerData.3.gz

NAME

       QwtCPointerData -

       Data class containing two pointers to memory blocks of doubles.

SYNOPSIS

       #include <qwt_series_data.h>

       Inherits QwtSeriesData< QPointF >.

   Public Member Functions
       QwtCPointerData (const double *x, const double *y, size_t size)
       virtual QRectF boundingRect () const
       virtual size_t size () const
       virtual QPointF sample (size_t i) const
       const double * xData () const
       const double * yData () const

Detailed Description

       Data class containing two pointers to memory blocks of doubles.

Constructor & Destructor Documentation

   QwtCPointerData::QwtCPointerData (const double *x, const double *y, size_tsize) 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::setRawSamples()

Member Function Documentation

   QRectF QwtCPointerData::boundingRect () const [virtual]
       Calculate the bounding rect. The bounding rectangle is calculated once by iterating over all points and
       is stored for all following requests.

       Returns:
           Bounding rectangle

       Implements QwtSeriesData< QPointF >.

   QPointF QwtCPointerData::sample (size_ti) const [virtual] Return the sample at position i
       Parameters:
           i Index

       Returns:
           Sample at position i

       Implements QwtSeriesData< QPointF >.

   size_t QwtCPointerData::size () const [virtual] Returns:
           Size of the data set

       Implements QwtSeriesData< QPointF >.

   const double * QwtCPointerData::xData () const Returns:
           Array of the x-values

   const double * QwtCPointerData::yData () const Returns:
           Array of the y-values

Author

       Generated automatically by Doxygen for Qwt User's Guide from the source code.