64 lines
1.5 KiB
C++
64 lines
1.5 KiB
C++
#ifndef OKHSVTRANSFORM_H
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#define OKHSVTRANSFORM_H
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#include <cstdint>
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///
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/// Color transformation to adjust the saturation and value of Okhsv colors
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///
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class OkhsvTransform
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{
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public:
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///
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/// Default constructor
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///
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OkhsvTransform();
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///
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/// Constructor
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///
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/// @param saturationGain gain factor to apply to saturation
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/// @param brightnessGain gain factor to apply to value/brightness
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///
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OkhsvTransform(double saturationGain, double brightnessGain);
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/// @return The current saturation gain value
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double getSaturationGain() const;
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/// @param saturationGain new saturation gain
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void setSaturationGain(double saturationGain);
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/// @return The current brightness gain value
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double getBrightnessGain() const;
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/// @param brightnessGain new value/brightness gain
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void setBrightnessGain(double brightnessGain);
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/// @return true if the current gain settings result in an identity transformation
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bool isIdentity() const;
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///
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/// Apply the transform the the given RGB values.
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///
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/// @param red The red color component
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/// @param green The green color component
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/// @param blue The blue color component
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///
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/// @note The values are updated in place.
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///
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void transform(uint8_t & red, uint8_t & green, uint8_t & blue) const;
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private:
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/// Sets _isIdentity to true if both gain values are at their neutral setting
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void updateIsIdentity();
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/// Gain settings
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double _saturationGain;
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double _brightnessGain;
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/// Is true if the gain settings result in an identity transformation
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bool _isIdentity;
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};
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#endif // OKHSVTRANSFORM_H
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