#include <qwt_series_data.h>
Public Member Functions | |
virtual QRectF | boundingRect () const |
QwtCPointerData (const double *x, const double *y, size_t size) | |
virtual QPointF | sample (size_t i) const |
virtual void | setRectOfInterest (const QRectF &) |
virtual size_t | size () const |
const double * | xData () const |
const double * | yData () const |
Protected Attributes | |
QRectF | d_boundingRect |
QwtCPointerData::QwtCPointerData | ( | const double * | x, | |
const double * | y, | |||
size_t | size | |||
) |
Constructor
x | Array of x values | |
y | Array of y values | |
size | Size of the x and y arrays |
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.
Implements QwtSeriesData< QPointF >.
QPointF QwtCPointerData::sample | ( | size_t | i | ) | const [virtual] |
Return the sample at position i
i | Index |
Implements QwtSeriesData< QPointF >.
size_t QwtCPointerData::size | ( | ) | const [virtual] |
const double * QwtCPointerData::xData | ( | ) | const |
const double * QwtCPointerData::yData | ( | ) | const |
QRectF QwtSeriesData< QPointF >::d_boundingRect [mutable, protected, inherited] |
Can be used to cache a calculated bounding rectangle.