Classes
struct	StrokeSample

Public Member Functions
void	addSampleImpl (const QPointF &pt, int time)

void	purgeOldSamples ()

Public Attributes
QPointF	lastSamplePos

qreal	maxSpeed = 0

QList< StrokeSample >	samples

int	startTime = 0

int	timeSmoothWindow = 0

Detailed Description

Definition at line 14 of file KisStrokeSpeedMeasurer.cpp.

Member Function Documentation

◆ addSampleImpl()

void KisStrokeSpeedMeasurer::Private::addSampleImpl	(	const QPointF &	pt,
		int	time )

Definition at line 46 of file KisStrokeSpeedMeasurer.cpp.

{
    if (samples.isEmpty()) {
        lastSamplePos = pt;
        startTime = time;
        samples.append(Private::StrokeSample(time, 0));
    } else {
        Private::StrokeSample &lastSample = samples.last();
 
        const qreal newStrokeDistance = lastSample.distance + kisDistance(lastSamplePos, pt);
        lastSamplePos = pt;
 
        if (lastSample.time >= time) {
            lastSample.distance = newStrokeDistance;
        } else {
            samples.append(Private::StrokeSample(time, newStrokeDistance));
        }
    }
}

References KisStrokeSpeedMeasurer::Private::StrokeSample::distance, kisDistance(), lastSamplePos, samples, startTime, and KisStrokeSpeedMeasurer::Private::StrokeSample::time.

◆ purgeOldSamples()

void KisStrokeSpeedMeasurer::Private::purgeOldSamples ( )

Definition at line 103 of file KisStrokeSpeedMeasurer.cpp.

{
    if (samples.size() <= 1) return;
 
    const Private::StrokeSample lastSample = samples.last();
 
    auto lastValueToKeep = samples.end();
 
    for (auto it = samples.begin(); it != samples.end(); ++it) {
        KIS_SAFE_ASSERT_RECOVER_RETURN(lastSample.time - it->time >= 0);
 
        if (lastSample.time - it->time < timeSmoothWindow) break;
        lastValueToKeep = it;
    }
 
    if (lastValueToKeep != samples.begin() &&
        lastValueToKeep != samples.end()) {
 
        samples.erase(samples.begin(), lastValueToKeep - 1);
    }
}

References KIS_SAFE_ASSERT_RECOVER_RETURN, and KisStrokeSpeedMeasurer::Private::StrokeSample::time.

Member Data Documentation

◆ lastSamplePos

QPointF KisStrokeSpeedMeasurer::Private::lastSamplePos

Definition at line 27 of file KisStrokeSpeedMeasurer.cpp.

◆ maxSpeed

qreal KisStrokeSpeedMeasurer::Private::maxSpeed = 0

Definition at line 30 of file KisStrokeSpeedMeasurer.cpp.

◆ samples

QList<StrokeSample> KisStrokeSpeedMeasurer::Private::samples

Definition at line 26 of file KisStrokeSpeedMeasurer.cpp.

◆ startTime

int KisStrokeSpeedMeasurer::Private::startTime = 0

Definition at line 28 of file KisStrokeSpeedMeasurer.cpp.

◆ timeSmoothWindow

int KisStrokeSpeedMeasurer::Private::timeSmoothWindow = 0

Definition at line 24 of file KisStrokeSpeedMeasurer.cpp.

The documentation for this struct was generated from the following file:

libs/image/brushengine/KisStrokeSpeedMeasurer.cpp

Classes

Public Member Functions

Public Attributes