KoGradientSegment::SineInterpolationStrategy Class Reference

#include <KoSegmentGradient.h>

Inheritance diagram for KoGradientSegment::SineInterpolationStrategy:

Public Member Functions
int	type () const override
qreal	valueAt (qreal t, qreal middle) const override
Public Member Functions inherited from KoGradientSegment::InterpolationStrategy
	InterpolationStrategy ()
virtual	~InterpolationStrategy ()

Static Public Member Functions
static SineInterpolationStrategy *	instance ()

Private Member Functions
	SineInterpolationStrategy ()

Static Private Attributes
static SineInterpolationStrategy *	m_instance = 0

Detailed Description

Definition at line 258 of file KoSegmentGradient.h.

Constructor & Destructor Documentation

SineInterpolationStrategy()

KoGradientSegment::SineInterpolationStrategy::SineInterpolationStrategy ( )

inlineprivate

Definition at line 268 of file KoSegmentGradient.h.

{}

Member Function Documentation

instance()

KoGradientSegment::SineInterpolationStrategy * KoGradientSegment::SineInterpolationStrategy::instance ( )

static

Definition at line 808 of file KoSegmentGradient.cpp.

{
    if (m_instance == 0) {
        m_instance = new SineInterpolationStrategy();
        Q_CHECK_PTR(m_instance);
    }
 
    return m_instance;
}

type()

int KoGradientSegment::SineInterpolationStrategy::type ( ) const

inlineoverridevirtual

Implements KoGradientSegment::InterpolationStrategy.

Definition at line 264 of file KoSegmentGradient.h.

                                  {
            return INTERP_SINE;
        }

References INTERP_SINE.

valueAt()

qreal KoGradientSegment::SineInterpolationStrategy::valueAt ( qreal t, qreal middle ) const

overridevirtual

Implements KoGradientSegment::InterpolationStrategy.

Definition at line 818 of file KoSegmentGradient.cpp.

{
    qreal lt = LinearInterpolationStrategy::calcValueAt(t, middle);
    qreal value = (sin(-M_PI_2 + M_PI * lt) + 1.0) / 2.0;
 
    return value;
}

References KoGradientSegment::LinearInterpolationStrategy::calcValueAt(), M_PI, and value().

Member Data Documentation

m_instance

KoGradientSegment::SineInterpolationStrategy * KoGradientSegment::SineInterpolationStrategy::m_instance = 0

staticprivate

Definition at line 270 of file KoSegmentGradient.h.

---

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

• libs/pigment/resources/KoSegmentGradient.h
• libs/pigment/resources/KoSegmentGradient.cpp