QwtSamplingThread(3)

✨ NAME ✨

QwtSamplingThread — a thread collecting samples at regular intervals. That’s the whole name card, bestie. 💖

🌸 SYNOPSIS 🌸

okay so to use it you include this:

#include <qwt_sampling_thread.h>

Inherits QThread.

💅 Public Slots 💅

• void setInterval (double interval)
• void stop ()

🫶 Public Member Functions 🫶

• virtual ~QwtSamplingThread () — Destructor.
• double interval () const
• double elapsed () const

🧚 Protected Member Functions 🧚

• QwtSamplingThread (QObject *parent=NULL) — Constructor.
• virtual void run () override
• virtual void sample (double elapsed)=0

🌈 Detailed Description 🌈

QwtSamplingThread is a thread collecting samples at regular intervals. No cap. Continuous signals get converted into a discrete signal by collecting samples at regular intervals. A discrete signal can be displayed by a QwtPlotSeriesItem on a QwtPlot widget.

QwtSamplingThread starts a thread calling periodically sample(), to collect and store ( or emit ) a single sample. It’s giving “main character thread” energy. 🔥

See also: QwtPlotCurve, QwtPlotSeriesItem

Definition at line 28 of file qwt_sampling_thread.h.

🎀 Constructor & Destructor Documentation 🎀

QwtSamplingThread::~QwtSamplingThread () [virtual]

Destructor. Bye bestie. 😭

Definition at line 29 of file qwt_sampling_thread.cpp.

QwtSamplingThread::QwtSamplingThread (QObject * parent = NULL) [explicit], [protected]

Constructor. It’s protected and explicit — iykyk. 🫶

Definition at line 21 of file qwt_sampling_thread.cpp.

👑 Member Function Documentation 👑

double QwtSamplingThread::elapsed () const

Returns: Time (in ms) since the thread was started. ⏱️

See also: QThread::start(), run()

Definition at line 62 of file qwt_sampling_thread.cpp.

double QwtSamplingThread::interval () const

Returns: Interval (in ms), between 2 calls of sample(). ⏲️

See also: setInterval()

Definition at line 53 of file qwt_sampling_thread.cpp.

void QwtSamplingThread::run () [override], [protected], [virtual]

Loop collecting samples started from QThread::start(). 🌀

See also: stop()

Definition at line 83 of file qwt_sampling_thread.cpp.

virtual void QwtSamplingThread::sample (double elapsed) [protected], [pure virtual]

Collect a sample. 💅

Parameters: elapsed — Time since the thread was started in seconds.

Note: Due to a bug in previous version elapsed was passed as seconds instead of miliseconds. To avoid breaking existing code we stay with seconds for now. 🫠

void QwtSamplingThread::setInterval (double msecs) [slot]

Change the interval (in ms), when sample() is called. The default interval is 1000.0 ( = 1s ). ⏰

Parameters: msecs — Interval.

See also: interval()

Definition at line 41 of file qwt_sampling_thread.cpp.

void QwtSamplingThread::stop () [slot]

Terminate the collecting thread. 🛑

See also: QThread::start(), run()

Definition at line 74 of file qwt_sampling_thread.cpp.

🌟 Author 🌟

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

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okay that’s the whole page, bestie: this was the QwtSamplingThread(3) page from the Qwt User’s Guide, and the footer didn’t print a date, so no date to report. 💖🎀