ContrastOp Struct Reference

Public Member Functions
	ContrastOp (qreal contrast)
int	operator() (int iValue)

Static Public Attributes
static const bool	supportsCaching = false

Private Attributes
qreal	m_contrast

Detailed Description

Definition at line 96 of file kis_ls_bevel_emboss_filter.cpp.

Constructor & Destructor Documentation

ContrastOp()

ContrastOp::ContrastOp ( qreal contrast )

inline

Definition at line 99 of file kis_ls_bevel_emboss_filter.cpp.

        : m_contrast(contrast)
    {
    }

Member Function Documentation

operator()()

int ContrastOp::operator() ( int iValue )

inline

Definition at line 104 of file kis_ls_bevel_emboss_filter.cpp.

                                {
        qreal value = qreal(iValue - 127) / 127.0;
 
        qreal slant = std::tan ((m_contrast + 1) * M_PI_4);
        value = (value - 0.5) * slant + 0.5;
 
        return qRound(value * 255.0);
    }

References m_contrast, and value().

Member Data Documentation

m_contrast

qreal ContrastOp::m_contrast

private

Definition at line 114 of file kis_ls_bevel_emboss_filter.cpp.

supportsCaching

const bool ContrastOp::supportsCaching = false

static

Definition at line 97 of file kis_ls_bevel_emboss_filter.cpp.

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

• libs/image/layerstyles/kis_ls_bevel_emboss_filter.cpp