Public Member Functions
qint64	fetchInt (const QString &key)

	Private (const Private &rhs)

	Private (int _seed)

Public Attributes
qint64	generatorMax = 0

QMutex	mutex

int	seed = 0

QHash< QString, qint64 >	valuesCache

Detailed Description

Definition at line 18 of file KisPerStrokeRandomSource.cpp.

Constructor & Destructor Documentation

◆ Private() [1/2]

KisPerStrokeRandomSource::Private::Private ( int _seed )

inline

Definition at line 20 of file KisPerStrokeRandomSource.cpp.

        : seed(_seed)
    {
        boost::taus88 tempGenerator(seed);
        generatorMax = tempGenerator.max();
    }

References generatorMax, and seed.

◆ Private() [2/2]

KisPerStrokeRandomSource::Private::Private ( const Private & rhs )

inline

Definition at line 27 of file KisPerStrokeRandomSource.cpp.

        : seed(rhs.seed),
          generatorMax(rhs.generatorMax),
          valuesCache(rhs.valuesCache)
    {
    }

Member Function Documentation

◆ fetchInt()

qint64 KisPerStrokeRandomSource::Private::fetchInt ( const QString & key )

Definition at line 59 of file KisPerStrokeRandomSource.cpp.

{
    QMutexLocker l(&mutex);
 
    auto it = valuesCache.find(key);
    if (it != valuesCache.end()) {
        return it.value();
    }
 
    boost::taus88 oneTimeGenerator(seed + qHash(key));
    const qint64 newValue = oneTimeGenerator();
 
    valuesCache.insert(key, newValue);
 
    return newValue;
}