#include <KoCompositeOpDissolve.h>

Inheritance diagram for KoCompositeOpDissolve< Traits >:

Public Member Functions
void	composite (const KoCompositeOp::ParameterInfo &params) const override

virtual void	composite (const ParameterInfo &params) const

void	composite (quint8 dstRowStart, qint32 dstRowStride, const quint8 srcRowStart, qint32 srcRowStride, const quint8 *maskRowStart, qint32 maskRowStride, qint32 rows, qint32 numColumns, float opacity, const QBitArray &channelFlags=QBitArray()) const

	KoCompositeOpDissolve (const KoColorSpace *cs, const QString &category)

Public Member Functions inherited from KoCompositeOp
QString	category () const

const KoColorSpace *	colorSpace () const

void	composite (quint8 dstRowStart, qint32 dstRowStride, const quint8 srcRowStart, qint32 srcRowStride, const quint8 *maskRowStart, qint32 maskRowStride, qint32 rows, qint32 numColumns, float opacity, const QBitArray &channelFlags=QBitArray()) const

QString	description () const

QString	id () const

	KoCompositeOp (const KoColorSpace *cs, const QString &id, const QString &category=KoCompositeOp::categoryMisc())

virtual	~KoCompositeOp ()

Public Member Functions inherited from Private
	Private (KisCanvas2 *c)

Private Types
typedef Traits::channels_type	channels_type

Private Attributes
QThreadStorage< KisRandomSource >	m_randomGenerator

Static Private Attributes
static const qint32	alpha_pos = Traits::alpha_pos

static const qint32	channels_nb = Traits::channels_nb

Additional Inherited Members
Static Public Member Functions inherited from KoCompositeOp
static QString	categoryArithmetic ()

static QString	categoryBinary ()

static QString	categoryDark ()

static QString	categoryHSI ()

static QString	categoryHSL ()

static QString	categoryHSV ()

static QString	categoryHSY ()

static QString	categoryLight ()

static QString	categoryMisc ()

static QString	categoryMix ()

static QString	categoryModulo ()

static QString	categoryNegative ()

static QString	categoryQuadratic ()

Public Attributes inherited from KoCompositeOp
QString	category

const KoColorSpace *	colorSpace

QBitArray	defaultChannelFlags

QString	description

QString	id

Public Attributes inherited from Private
KisCanvas2 *	canvas

int	displayedFrame

int	intendedFrame

Detailed Description

template<class Traits>
class KoCompositeOpDissolve< Traits >

Definition at line 17 of file KoCompositeOpDissolve.h.

Member Typedef Documentation

◆ channels_type

template<class Traits >

typedef Traits::channels_type KoCompositeOpDissolve< Traits >::channels_type

private

Definition at line 19 of file KoCompositeOpDissolve.h.

Constructor & Destructor Documentation

◆ KoCompositeOpDissolve()

template<class Traits >

KoCompositeOpDissolve< Traits >::KoCompositeOpDissolve	(	const KoColorSpace *	cs,
		const QString &	category )

inline

Definition at line 27 of file KoCompositeOpDissolve.h.

        : KoCompositeOp(cs, COMPOSITE_DISSOLVE, category)
    {
    }

Member Function Documentation

◆ composite() [1/3]

template<class Traits >

void KoCompositeOpDissolve< Traits >::composite ( const KoCompositeOp::ParameterInfo & params ) const

inlineoverridevirtual

Same as previous, but uses a parameter structure

Initialize local per-thread random generator from the global one, it will reduce contestion over the global generator in the main compositing loop.

KisRandomSource is automatically initialized from QRandomGenerator::global() internally.

Reimplemented from KoCompositeOp.

Definition at line 34 of file KoCompositeOpDissolve.h.

                                                                            {
        if (!m_randomGenerator.hasLocalData()) {
            m_randomGenerator.setLocalData(KisRandomSource());
        }
 
        const QBitArray& flags       = params.channelFlags.isEmpty() ? QBitArray(channels_nb,true) : params.channelFlags;
        bool             alphaLocked = (alpha_pos != -1) && !flags.testBit(alpha_pos);
 
        using namespace Arithmetic;
 
//         quint32       ctr       = quint32(reinterpret_cast<quint64>(dstRowStart) % 256);
        qint32        srcInc    = (params.srcRowStride == 0) ? 0 : channels_nb;
        bool          useMask   = params.maskRowStart != 0;
        channels_type unitValue = KoColorSpaceMathsTraits<channels_type>::unitValue;
        channels_type opacity   = KoColorSpaceMaths<float,channels_type>::scaleToA(params.opacity);
 
        const quint8 *srcRowStart = params.srcRowStart;
        quint8 *dstRowStart = params.dstRowStart;
        const quint8 *maskRowStart = params.maskRowStart;
 
        qint32 rows = params.rows;
 
        for(; rows>0; --rows) {
            const channels_type* src  = reinterpret_cast<const channels_type*>(srcRowStart);
            channels_type*       dst  = reinterpret_cast<channels_type*>(dstRowStart);
            const quint8*        mask = maskRowStart;
 
            for(qint32 c=params.cols; c>0; --c) {
                channels_type srcAlpha = (alpha_pos == -1) ? unitValue : src[alpha_pos];
                channels_type dstAlpha = (alpha_pos == -1) ? unitValue : dst[alpha_pos];
                channels_type blend    = useMask ? mul(opacity, scale<channels_type>(*mask), srcAlpha) : mul(opacity, srcAlpha);
 
                if (m_randomGenerator.localData().generate(0, 255) <= scale<quint8>(blend)
                    && blend != KoColorSpaceMathsTraits<channels_type>::zeroValue) {
                    for(qint32 i=0; i <channels_nb; i++) {
                        if(i != alpha_pos && flags.testBit(i))
                            dst[i] = src[i];
                    }
 
                    if(alpha_pos != -1)
                        dst[alpha_pos] = alphaLocked ? dstAlpha : unitValue;
                }
 
                src += srcInc;
                dst += channels_nb;
//                 ctr  = (ctr + 1) % 256;
                if (mask) {
                    ++mask;
                }
            }
 
            srcRowStart  += params.srcRowStride;
            dstRowStart  += params.dstRowStride;
            if (maskRowStart) {
                maskRowStart += params.maskRowStride;
            }
        }
    }

◆ composite() [2/3]

template<class Traits >

void KoCompositeOp::composite ( const ParameterInfo & params ) const

virtual

Same as previous, but uses a parameter structure

Reimplemented from KoCompositeOp.

Definition at line 123 of file KoCompositeOp.cpp.

{
    composite(params.dstRowStart           , params.dstRowStride ,
              params.srcRowStart           , params.srcRowStride ,
              params.maskRowStart          , params.maskRowStride,
              params.rows                  , params.cols         ,
              params.opacity, params.channelFlags );
}

◆ composite() [3/3]

template<class Traits >

void KoCompositeOp::composite	(	quint8 *	dstRowStart,
		qint32	dstRowStride,
		const quint8 *	srcRowStart,
		qint32	srcRowStride,
		const quint8 *	maskRowStart,
		qint32	maskRowStride,
		qint32	rows,
		qint32	numColumns,
		float	opacity,
		const QBitArray &	channelFlags = QBitArray() ) const

Parameters

dstRowStart	pointer to the start of the byte array we will composite the source on
dstRowStride	length of the rows of the block of destination pixels in bytes
srcRowStart	pointer to the start of the byte array we will mix with dest
srcRowStride	length of the rows of the block of src in bytes pixels (may be different from the rowstride of the dst pixels, in which case the smaller value is used). If srcRowStride is null it is assumed that the source is a constant color.
maskRowStart	start of the byte mask that determines whether and if so, then how much of src is used for blending
maskRowStride	length of the mask scanlines in bytes
rows	number of scanlines to blend
numColumns	length of the row of pixels in pixels
opacity	transparency with which to blend
channelFlags	a bit array that determines which channels should be processed (channels are in the order of the channels in the colorspace)

Definition at line 113 of file KoCompositeOp.cpp.

{
    KoCompositeOp::ParameterInfo params;
    params.dstRowStart   = dstRowStart;
    params.dstRowStride  = dstRowStride;
    params.srcRowStart   = srcRowStart;
    params.srcRowStride  = srcRowStride;
    params.maskRowStart  = maskRowStart;
    params.maskRowStride = maskRowStride;
    params.rows          = rows;
    params.cols          = numColumns;
    params.opacity       = opacity;
    params.flow          = 1.0f;
    params.channelFlags  = channelFlags;
    composite(params);
}

Member Data Documentation

◆ alpha_pos

template<class Traits >

const qint32 KoCompositeOpDissolve< Traits >::alpha_pos = Traits::alpha_pos

staticprivate

Definition at line 22 of file KoCompositeOpDissolve.h.

◆ channels_nb

template<class Traits >

const qint32 KoCompositeOpDissolve< Traits >::channels_nb = Traits::channels_nb

staticprivate

Definition at line 21 of file KoCompositeOpDissolve.h.

◆ m_randomGenerator

template<class Traits >

QThreadStorage<KisRandomSource> KoCompositeOpDissolve< Traits >::m_randomGenerator

mutableprivate

Definition at line 24 of file KoCompositeOpDissolve.h.

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

libs/pigment/compositeops/KoCompositeOpDissolve.h

Public Member Functions

Private Types

Private Attributes

Static Private Attributes

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ channels_type

Constructor & Destructor Documentation

◆ KoCompositeOpDissolve()

Member Function Documentation

◆ composite() [1/3]

◆ composite() [2/3]

◆ composite() [3/3]

Member Data Documentation

◆ alpha_pos

◆ channels_nb

◆ m_randomGenerator