QwtPolygonFData(3) Qwt User's Guide QwtPolygonFData(3)NAMEQwtPolygonFData-
Data class containing a single QwtArray<QwtDoublePoint> object.
SYNOPSIS
#include <qwt_data.h>
Inherits QwtData.
Public Member Functions
virtual QwtDoubleRect boundingRect () const
virtual QwtData * copy () const
const QPolygonF & data () const
QwtPolygonFData & operator= (const QwtPolygonFData &)
QwtPolygonFData (const QPolygonF &)
virtual size_t size () const
virtual double x (size_t i) const
virtual double y (size_t i) const
Detailed Description
Data class containing a single QwtArray<QwtDoublePoint> object.
Constructor & Destructor Documentation
QwtPolygonFData::QwtPolygonFData (const QPolygonF &polygon) Constructor
Parameters:
polygon Polygon data
See also:
QwtPlotCurve::setData()Member Function Documentation
QwtDoubleRect QwtData::boundingRect () const [virtual, inherited] Returns
the bounding rectangle of the data. If there is no bounding rect, like
for empty data the rectangle is invalid: QwtDoubleRect::isValid() ==
false
Warning:
This is an slow implementation iterating over all points. It is
intended to be overloaded by derived classes. In case of auto
scaling boundingRect() is called for every replot, so it might be
worth to implement a cache, or use x(0), x(size() - 1) for ordered
data ...
Reimplemented in QwtArrayData, and QwtCPointerData.
QwtData * QwtPolygonFData::copy () const [virtual] Returns:
Pointer to a copy (virtual copy constructor)
Implements QwtData.
const QPolygonF & QwtPolygonFData::data () const Returns:
Point array
QwtPolygonFData & QwtPolygonFData::operator= (const QwtPolygonFData &data)
Assignment.
size_t QwtPolygonFData::size () const [virtual] Returns:
Size of the data set
Implements QwtData.
double QwtPolygonFData::x (size_ti) const [virtual] Return the x value of
data point i
Parameters:
i Index
Returns:
x X value of data point i
Implements QwtData.
double QwtPolygonFData::y (size_ti) const [virtual] Return the y value of
data point i
Parameters:
i Index
Returns:
y Y value of data point i
Implements QwtData.
Author
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Version 5.2.2 Mon Aug 1 2011 QwtPolygonFData(3)
