BlendingAlgorithms.h

// SPDX-FileCopyrightText: 2010 Jens-Michael Hoffmann <jmho@c-xx.com>
//
// SPDX-License-Identifier: LGPL-2.1-or-later
 
#ifndef MARBLE_BLENDING_ALGORITHMS_H
#define MARBLE_BLENDING_ALGORITHMS_H
 
#include <QtGlobal>
 
#include "Blending.h"
 
namespace Marble
{
 
class OverpaintBlending: public Blending
{
 public:
    void blend( QImage * const bottom, TextureTile const * const top ) const override;
};
 
class IndependentChannelBlending: public Blending
{
 public:
    void blend( QImage * const bottom, TextureTile const * const top ) const override;
 private:
    // bottomColorIntensity: intensity of one color channel (of one pixel) of the bottom image
    // topColorIntensity: intensity of one color channel (of one pixel) of the top image
    // return: intensity of the color channel (of a given pixel) of the result image
    // all color intensity values are in the range 0..1
    virtual qreal blendChannel( qreal const bottomColorIntensity,
                                qreal const topColorIntensity ) const = 0;
};
 
 
// Neutral blendings
 
class AllanonBlending: public IndependentChannelBlending
{
    qreal blendChannel( qreal const bottomColorIntensity,
                                qreal const topColorIntensity ) const override;
};
 
class ArcusTangentBlending: public IndependentChannelBlending
{
    qreal blendChannel( qreal const bottomColorIntensity,
                                qreal const topColorIntensity ) const override;
};
 
class GeometricMeanBlending: public IndependentChannelBlending
{
    qreal blendChannel( qreal const bottomColorIntensity,
                                qreal const topColorIntensity ) const override;
};
 
class LinearLightBlending: public IndependentChannelBlending
{
    qreal blendChannel( qreal const bottomColorIntensity,
                                qreal const topColorIntensity ) const override;
};
 
class NoiseBlending: public Blending // or IndependentChannelBlending?
{
};
 
class OverlayBlending: public IndependentChannelBlending
{
    qreal blendChannel( qreal const bottomColorIntensity,
                                qreal const topColorIntensity ) const override;
};
 
class ParallelBlending: public IndependentChannelBlending
{
    qreal blendChannel( qreal const bottomColorIntensity,
                                qreal const topColorIntensity ) const override;
};
 
class TextureBlending: public IndependentChannelBlending
{
    qreal blendChannel( qreal const bottomColorIntensity,
                                qreal const topColorIntensity ) const override;
};
 
 
// Darkening blendings
 
class ColorBurnBlending: public IndependentChannelBlending
{
    qreal blendChannel( qreal const bottomColorIntensity,
                                qreal const topColorIntensity ) const override;
};
 
class DarkBlending: public IndependentChannelBlending
{
    qreal blendChannel( qreal const bottomColorIntensity,
                                qreal const topColorIntensity ) const override;
};
 
class DarkenBlending: public IndependentChannelBlending
{
    qreal blendChannel( qreal const bottomColorIntensity,
                                qreal const topColorIntensity ) const override;
};
 
class DivideBlending: public IndependentChannelBlending
{
    qreal blendChannel( qreal const bottomColorIntensity,
                                qreal const topColorIntensity ) const override;
};
 
class GammaDarkBlending: public IndependentChannelBlending
{
    qreal blendChannel( qreal const bottomColorIntensity,
                                qreal const topColorIntensity ) const override;
};
 
class LinearBurnBlending: public IndependentChannelBlending
{
    qreal blendChannel( qreal const bottomColorIntensity,
                                qreal const topColorIntensity ) const override;
};
 
class MultiplyBlending: public IndependentChannelBlending
{
    qreal blendChannel( qreal const bottomColorIntensity,
                                qreal const topColorIntensity ) const override;
};
 
class SubtractiveBlending: public IndependentChannelBlending
{
    qreal blendChannel( qreal const bottomColorIntensity,
                                qreal const topColorIntensity ) const override;
};
 
 
// Lightening blendings
 
class AdditiveBlending: public IndependentChannelBlending
{
    qreal blendChannel( qreal const bottomColorIntensity,
                                qreal const topColorIntensity ) const override;
};
 
class ColorDodgeBlending: public IndependentChannelBlending
{
    qreal blendChannel( qreal const bottomColorIntensity,
                                qreal const topColorIntensity ) const override;
};
 
class GammaLightBlending: public IndependentChannelBlending
{
    qreal blendChannel( qreal const bottomColorIntensity,
                                qreal const topColorIntensity ) const override;
};
 
class HardLightBlending: public IndependentChannelBlending
{
    qreal blendChannel( qreal const bottomColorIntensity,
                                qreal const topColorIntensity ) const override;
};
 
class LightBlending: public IndependentChannelBlending
{
    qreal blendChannel( qreal const bottomColorIntensity,
                                qreal const topColorIntensity ) const override;
};
 
class LightenBlending: public IndependentChannelBlending
{
    qreal blendChannel( qreal const bottomColorIntensity,
                                qreal const topColorIntensity ) const override;
};
 
class PinLightBlending: public IndependentChannelBlending
{
    qreal blendChannel( qreal const bottomColorIntensity,
                                qreal const topColorIntensity ) const override;
};
 
class ScreenBlending: public IndependentChannelBlending
{
    qreal blendChannel( qreal const bottomColorIntensity,
                                qreal const topColorIntensity ) const override;
};
 
class SoftLightBlending: public IndependentChannelBlending
{
    qreal blendChannel( qreal const bottomColorIntensity,
                                qreal const topColorIntensity ) const override;
};
 
class VividLightBlending: public IndependentChannelBlending
{
    qreal blendChannel( qreal const bottomColorIntensity,
                                qreal const topColorIntensity ) const override;
};
 
 
// Inverter blendings
 
class AdditiveSubtractiveBlending: public IndependentChannelBlending
{
    qreal blendChannel( qreal const bottomColorIntensity,
                                qreal const topColorIntensity ) const override;
};
 
class BleachBlending: public IndependentChannelBlending
{
    qreal blendChannel( qreal const bottomColorIntensity,
                                qreal const topColorIntensity ) const override;
};
 
class DifferenceBlending: public IndependentChannelBlending
{
    qreal blendChannel( qreal const bottomColorIntensity,
                                qreal const topColorIntensity ) const override;
};
 
class EquivalenceBlending: public IndependentChannelBlending
{
    qreal blendChannel( qreal const bottomColorIntensity,
                                qreal const topColorIntensity ) const override;
};
 
class HalfDifferenceBlending: public IndependentChannelBlending
{
    qreal blendChannel( qreal const bottomColorIntensity,
                                qreal const topColorIntensity ) const override;
};
 
 
// Special purpose blendings
 
class CloudsBlending: public Blending
{
 public:
    void blend( QImage * const bottom, TextureTile const * const top ) const override;
};
 
class GrayscaleBlending: public Blending
{
 public:
    void blend( QImage * const bottom, TextureTile const * const top ) const override;
};
 
class InvertColorBlending: public Blending
{
 public:
    void blend( QImage * const bottom, TextureTile const * const top ) const override;
};
 
class InvertHueBlending: public Blending
{
 public:
    void blend( QImage * const bottom, TextureTile const * const top ) const override;
};
 
}
 
#endif