#include <kis_filter_strategy.h>

Inheritance diagram for KisMitchellFilterStrategy:

Public Member Functions
	KisMitchellFilterStrategy ()

qreal	valueAt (qreal t, qreal weightsPositionScale) const override

	~KisMitchellFilterStrategy () override

Public Member Functions inherited from KisFilterStrategy
virtual QString	description ()

QString	id ()

virtual qint32	intSupport (qreal weightsPositionScale)

virtual qint32	intValueAt (qint32 t, qreal weightsPositionScale) const

	KisFilterStrategy (KoID id)

QString	name ()

virtual qreal	support (qreal weightsPositionScale)

virtual	~KisFilterStrategy ()

Additional Inherited Members
Protected Attributes inherited from KisFilterStrategy
qint32	intSupportVal {0}

KoID	m_id

qreal	supportVal {0.0}

Detailed Description

Definition at line 160 of file kis_filter_strategy.h.

Constructor & Destructor Documentation

◆ KisMitchellFilterStrategy()

KisMitchellFilterStrategy::KisMitchellFilterStrategy ( )

inline

Definition at line 163 of file kis_filter_strategy.h.

                                : KisFilterStrategy(KoID("Mitchell", i18n("Mitchell"))) {
        supportVal = 2.0; intSupportVal = 256;
    }

◆ ~KisMitchellFilterStrategy()

KisMitchellFilterStrategy::~KisMitchellFilterStrategy ( )

inlineoverride

Definition at line 166 of file kis_filter_strategy.h.

166{}

Member Function Documentation

◆ valueAt()

qreal KisMitchellFilterStrategy::valueAt	(	qreal	t,
		qreal	weightsPositionScale ) const

overridevirtual

Reimplemented from KisFilterStrategy.

Definition at line 172 of file kis_filter_strategy.cc.

{
    Q_UNUSED(weightsPositionScale);
    const qreal B = 1.0 / 3.0;
    const qreal C = 1.0 / 3.0;
    qreal tt;
 
    tt = t * t;
    if (t < 0) t = -t;
    if (t < 1.0) {
        t = (((12.0 - 9.0 * B - 6.0 * C) * (t * tt)) + ((-18.0 + 12.0 * B + 6.0 * C) * tt) + (6.0 - 2 * B));
        return(t / 6.0);
    } else if (t < 2.0) {
        t = (((-1.0 * B - 6.0 * C) * (t * tt)) + ((6.0 * B + 30.0 * C) * tt) + ((-12.0 * B - 48.0 * C) * t) + (8.0 * B + 24 * C));
        return(t / 6.0);
    }
    return(0.0);
}

References B, and C.

The documentation for this class was generated from the following files:

libs/image/kis_filter_strategy.h
libs/image/kis_filter_strategy.cc