A spline with G1 continuity. More...
#include <qwt_spline_pleasing.h>
Public Member Functions | |
| virtual QVector< QLineF > | bezierControlLines (const QPolygonF &) const QWT_OVERRIDE |
| Interpolate a curve with Bezier curves. More... | |
| virtual uint | locality () const QWT_OVERRIDE |
| virtual QPainterPath | painterPath (const QPolygonF &) const QWT_OVERRIDE |
| Interpolate a curve with Bezier curves. More... | |
| QwtSplinePleasing () | |
| Constructor. More... | |
| virtual | ~QwtSplinePleasing () |
| Destructor. More... | |
 Public Member Functions inherited from QwtSplineG1 | |
| QwtSplineG1 () | |
| Constructor. More... | |
| virtual | ~QwtSplineG1 () |
| Destructor. More... | |
| Public Member Functions inherited from QwtSplineInterpolating | |
| virtual QPolygonF | equidistantPolygon (const QPolygonF &, double distance, bool withNodes) const |
| Find an interpolated polygon with "equidistant" points. More... | |
| virtual QPolygonF | polygon (const QPolygonF &, double tolerance) const QWT_OVERRIDE |
| Interpolate a curve by a polygon. More... | |
| QwtSplineInterpolating () | |
| Constructor. More... | |
| virtual | ~QwtSplineInterpolating () |
| Destructor. More... | |
| Public Member Functions inherited from QwtSpline | |
| int | boundaryCondition (BoundaryPosition) const |
| BoundaryType | boundaryType () const |
| double | boundaryValue (BoundaryPosition) const |
| const QwtSplineParametrization * | parametrization () const |
| QwtSpline () | |
| Constructor. More... | |
| void | setBoundaryCondition (BoundaryPosition, int condition) |
| Define the condition for an endpoint of the spline. More... | |
| void | setBoundaryConditions (int condition, double valueBegin=0.0, double valueEnd=0.0) |
| Define the condition at the endpoints of a spline. More... | |
| void | setBoundaryType (BoundaryType) |
| void | setBoundaryValue (BoundaryPosition, double value) |
| Define the boundary value. More... | |
| void | setParametrization (int type) |
| void | setParametrization (QwtSplineParametrization *) |
| virtual | ~QwtSpline () |
| Destructor. More... | |
Additional Inherited Members | |
| Public Types inherited from QwtSpline | |
| enum | BoundaryCondition { Clamped1, Clamped2, Clamped3, LinearRunout } |
| Boundary condition. More... | |
| enum | BoundaryPosition { AtBeginning, AtEnd } |
| enum | BoundaryType { ConditionalBoundaries, PeriodicPolygon, ClosedPolygon } |
Detailed Description
A spline with G1 continuity.
QwtSplinePleasing is some sort of cardinal spline, with non C1 continuous extra rules for narrow angles. It has a locality of 2.
- Note
- The algorithm is the one offered by a popular office package.
Definition at line 23 of file qwt_spline_pleasing.h.
Constructor & Destructor Documentation
◆ QwtSplinePleasing()
| QwtSplinePleasing::QwtSplinePleasing | ( | ) |
Constructor.
The default setting is a non closing spline with uniform parametrization. ( QwtSplineParametrization::ParameterUniform ).
Definition at line 265 of file qwt_spline_pleasing.cpp.
◆ ~QwtSplinePleasing()
|
virtual |
Destructor.
Definition at line 271 of file qwt_spline_pleasing.cpp.
Member Function Documentation
◆ bezierControlLines()
|
virtual |
Interpolate a curve with Bezier curves.
Interpolates a polygon piecewise with cubic Bezier curves and returns the 2 control points of each curve as QLineF.
- Parameters
-
points Control points
- Returns
- Control points of the interpolating Bezier curves
Implements QwtSplineInterpolating.
Definition at line 327 of file qwt_spline_pleasing.cpp.
◆ locality()
|
virtual |
◆ painterPath()
|
virtual |
Interpolate a curve with Bezier curves.
Interpolates a polygon piecewise with cubic Bezier curves and returns them as QPainterPath.
- Parameters
-
points Control points
- Returns
- QPainterPath Painter path, that can be rendered by QPainter
Reimplemented from QwtSplineInterpolating.
Definition at line 290 of file qwt_spline_pleasing.cpp.
The documentation for this class was generated from the following files: