Data class containing two pointers to memory blocks of doubles. More...
#include <qwt_point_data.h>
Public Member Functions | |
| virtual QRectF | boundingRect () const |
| Calculate the bounding rectangle. | |
| QwtCPointerData (const double *x, const double *y, size_t size) | |
| virtual QPointF | sample (size_t i) const |
| virtual size_t | size () const |
| const double * | xData () const |
| const double * | yData () const |
Private Attributes | |
| size_t | d_size |
| const double * | d_x |
| const double * | d_y |
Detailed Description
Data class containing two pointers to memory blocks of doubles.
Definition at line 41 of file qwt_point_data.h.
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.
Definition at line 105 of file qwt_point_data.cpp.
Member Function Documentation
| QRectF QwtCPointerData::boundingRect | ( | ) | const [virtual] |
Calculate the bounding rectangle.
The bounding rectangle is calculated once by iterating over all points and is stored for all following requests.
- Returns:
- Bounding rectangle
Implements QwtSeriesData< QPointF >.
Definition at line 121 of file qwt_point_data.cpp.
| QPointF QwtCPointerData::sample | ( | size_t | index | ) | const [virtual] |
Return the sample at position i
- Parameters:
-
index Index
- Returns:
- Sample at position i
Implements QwtSeriesData< QPointF >.
Definition at line 141 of file qwt_point_data.cpp.
| size_t QwtCPointerData::size | ( | ) | const [virtual] |
- Returns:
- Size of the data set
Implements QwtSeriesData< QPointF >.
Definition at line 130 of file qwt_point_data.cpp.
| const double * QwtCPointerData::xData | ( | ) | const |
- Returns:
- Array of the x-values
Definition at line 147 of file qwt_point_data.cpp.
| const double * QwtCPointerData::yData | ( | ) | const |
- Returns:
- Array of the y-values
Definition at line 153 of file qwt_point_data.cpp.
Member Data Documentation
size_t QwtCPointerData::d_size [private] |
Definition at line 56 of file qwt_point_data.h.
const double* QwtCPointerData::d_x [private] |
Definition at line 54 of file qwt_point_data.h.
const double* QwtCPointerData::d_y [private] |
Definition at line 55 of file qwt_point_data.h.
The documentation for this class was generated from the following files: