#include <KisScreentoneBrightnessContrastFunctions.h>

Public Member Functions
qreal	operator() (qreal x) const

	Threshold (qreal threshold)

Private Attributes
const qreal	m_threshold

const bool	m_thresholdIsOne

Detailed Description

Definition at line 35 of file KisScreentoneBrightnessContrastFunctions.h.

Constructor & Destructor Documentation

◆ Threshold()

KisScreentoneBrightnessContrastFunctions::Threshold::Threshold ( qreal threshold )

Definition at line 34 of file KisScreentoneBrightnessContrastFunctions.cpp.

    : m_threshold(threshold)
    , m_thresholdIsOne(qFuzzyCompare(threshold, 1.0))
{}

Member Function Documentation

◆ operator()()

qreal KisScreentoneBrightnessContrastFunctions::Threshold::operator() ( qreal x ) const

Definition at line 39 of file KisScreentoneBrightnessContrastFunctions.cpp.

{
    // In the extreme case where the threshold value is 1.0, we need to compare
    // the value with 1.0, otherwise a value of 1.0 with a threshold of 1.0 will
    // produce 1.0 as an output. The effect would be some white dots in an all
    // black image, something not desirable.
    return m_thresholdIsOne || x < m_threshold ? 0.0 : 1.0;
}