QwtCPointerData Class Reference
Data class containing two pointers to memory blocks of doubles. More...
#include <qwt_data.h>
Inheritance diagram for QwtCPointerData:
Public Member Functions | |
| QwtCPointerData (const double *x, const double *y, size_t size) | |
| QwtCPointerData & | operator= (const QwtCPointerData &) |
| virtual QwtData * | copy () 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 |
Detailed Description
Data class containing two pointers to memory blocks of doubles.
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.
Member Function Documentation
| 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.
| QwtData * QwtCPointerData::copy | ( | ) | const [virtual] |
- Returns:
- Pointer to a copy (virtual copy constructor)
Implements QwtData.
| QwtCPointerData & QwtCPointerData::operator= | ( | const QwtCPointerData & | data | ) |
Assignment.
Reimplemented from QwtData.
| size_t QwtCPointerData::size | ( | ) | const [virtual] |
- Returns:
- Size of the data set
Implements QwtData.
| 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.
| const double * QwtCPointerData::xData | ( | ) | const |
- Returns:
- Array of the x-values
| 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.
| const double * QwtCPointerData::yData | ( | ) | const |
- Returns:
- Array of the y-values
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