QwtVectorFieldSample - Man Page
Sample used in vector fields.
Synopsis
#include <qwt_samples.h>
Public Member Functions
QwtVectorFieldSample (double x=0.0, double y=0.0, double vx=0.0, double vy=0.0)
Constructor.
QwtVectorFieldSample (const QPointF &pos, double vx=0.0, double vy=0.0)
Constructor.
QPointF pos () const
bool isNull () const
Public Attributes
double x
x coordinate of the position
double y
y coordinate of the position
double vx
x coordinate of the vector
double vy
y coordinate of the vector
Detailed Description
Sample used in vector fields.
A vector field sample is a position and a vector - usually representing some direction and magnitude - attached to this position.
- See also
QwtVectorFieldData
Definition at line 243 of file qwt_samples.h.
Constructor & Destructor Documentation
QwtVectorFieldSample::QwtVectorFieldSample (double posX = 0.0, double posY = 0.0, double vectorX = 0.0, double vectorY = 0.0) [inline]
Constructor.
- Parameters
posX x coordinate of the position
posY y coordinate of the position
vectorX x coordinate of the vector
vectorY y coordinate of the vector
Definition at line 277 of file qwt_samples.h.
QwtVectorFieldSample::QwtVectorFieldSample (const QPointF & pos, double vectorX = 0.0, double vectorY = 0.0) [inline]
Constructor.
- Parameters
pos Position
vectorX x coordinate of the vector
vectorY y coordinate of the vector
Definition at line 293 of file qwt_samples.h.
Member Function Documentation
bool QwtVectorFieldSample::isNull () const [inline]
- Returns
true, if vx and vy are 0
Definition at line 309 of file qwt_samples.h.
QPointF QwtVectorFieldSample::pos () const [inline]
- Returns
x/y coordinates as QPointF
Definition at line 303 of file qwt_samples.h.
Author
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