CFSoftLightSvg< T > Struct Template Reference

#include <KoCompositeOpFunctions.h>

Inheritance diagram for CFSoftLightSvg< T >:

Static Public Member Functions
static T	composeChannel (T src, T dst)
Static Public Member Functions inherited from KoClampedSourceAndDestinationCompositeOpGenericFunctorBase< T >
static T	clampDestinationChannelValue (T value)
static T	clampSourceChannelValue (T value)

Detailed Description

template<class T>
struct CFSoftLightSvg< T >

Definition at line 491 of file KoCompositeOpFunctions.h.

Member Function Documentation

composeChannel()

template<class T >

static T CFSoftLightSvg< T >::composeChannel ( T src, T dst )

inlinestatic

soft-light scales the color using sqrt and pow2 functions, hence we cannot support HDR values

Definition at line 492 of file KoCompositeOpFunctions.h.

                                                 {
        using namespace Arithmetic;
 
        qreal fsrc = scale<qreal>(src);
        qreal fdst = scale<qreal>(dst);
 
        if(fsrc > 0.5) {
            qreal D = (fdst > 0.25) ? sqrt(fdst) : ((16.0*fdst - 12.0)*fdst + 4.0)*fdst;
            return scale<T>(fdst + (2.0*fsrc - 1.0) * (D - fdst));
        }
 
        return scale<T>(fdst - (1.0 - 2.0 * fsrc) * fdst * (1.0 - fdst));
    }

References D().

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

• libs/pigment/compositeops/KoCompositeOpFunctions.h