QwtSplineBasis - Man Page
An approximation using a basis spline.
Synopsis
#include <qwt_spline_basis.h>
Inherits QwtSpline.
Public Member Functions
QwtSplineBasis ()
Constructor.
virtual ~QwtSplineBasis ()
Destructor.
virtual QPainterPath painterPath (const QPolygonF &) const override
virtual uint locality () const override
The locality is always 2.
Additional Inherited Members
Detailed Description
An approximation using a basis spline.
QwtSplineBasis approximates a set of points by a polynomials with C2 continuity ( = first and second derivatives are equal ) at the end points.
The end points of the spline do not match the original points.
Definition at line 24 of file qwt_spline_basis.h.
Member Function Documentation
QPainterPath QwtSplineBasis::painterPath (const QPolygonF & points) const [override], [virtual]
Approximates a polygon piecewise with cubic Bezier curves and returns them as QPainterPath.
- Parameters
points Control points
- Returns
Painter path, that can be rendered by QPainter
Implements QwtSpline.
Definition at line 249 of file qwt_spline_basis.cpp.
Author
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