107 lines
2.8 KiB
C++
107 lines
2.8 KiB
C++
#pragma once
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// STL includes
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#include <cstdint>
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///
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/// Color transformation to adjust the saturation and value of a RGB color value
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///
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class HsvTransform
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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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HsvTransform();
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///
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/// Constructor
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///
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/// @param saturationGain The used saturation gain
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/// @param valueGain The used value gain
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///
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HsvTransform(double saturationGain, double valueGain);
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///
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/// Destructor
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///
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~HsvTransform();
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///
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/// Updates the saturation gain
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///
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/// @param saturationGain New saturationGain
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///
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void setSaturationGain(double saturationGain);
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///
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/// Returns the saturation gain
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///
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/// @return The current Saturation gain
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///
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double getSaturationGain() const;
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///
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/// Updates the value gain
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///
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/// @param valueGain New value gain
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///
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void setValueGain(double valueGain);
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///
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/// Returns the value gain
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///
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/// @return The current value gain
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///
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double getValueGain() 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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///
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/// Translates an RGB (red, green, blue) color to an HSV (hue, saturation, value) color
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///
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/// @param[in] red The red RGB-component
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/// @param[in] green The green RGB-component
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/// @param[in] blue The blue RGB-component
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/// @param[out] hue The hue HSV-component
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/// @param[out] saturation The saturation HSV-component
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/// @param[out] value The value HSV-component
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///
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/// @note Integer version of the conversion are faster, but a little less accurate all values
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/// are unsigned 8 bit values and scaled between 0 and 255 except for the hue which is a 16 bit
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/// number and scaled between 0 and 360
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///
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static void rgb2hsv(uint8_t red, uint8_t green, uint8_t blue, uint16_t & hue, uint8_t & saturation, uint8_t & value);
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///
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/// Translates an HSV (hue, saturation, value) color to an RGB (red, green, blue) color
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///
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/// @param[in] hue The hue HSV-component
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/// @param[in] saturation The saturation HSV-component
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/// @param[in] value The value HSV-component
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/// @param[out] red The red RGB-component
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/// @param[out] green The green RGB-component
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/// @param[out] blue The blue RGB-component
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///
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/// @note Integer version of the conversion are faster, but a little less accurate all values
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/// are unsigned 8 bit values and scaled between 0 and 255 except for the hue which is a 16 bit
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/// number and scaled between 0 and 360
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///
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static void hsv2rgb(uint16_t hue, uint8_t saturation, uint8_t value, uint8_t & red, uint8_t & green, uint8_t & blue);
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private:
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/// The saturation gain
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double _saturationGain;
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/// The value gain
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double _valueGain;
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};
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