NAME

QwtVectorFieldSample - 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

Generated automatically by Doxygen for Qwt User's Guide from the source code.

Sun Jul 18 2021

Version 6.2.0