hyperion.ng/include/utils/ColorRgbw.h
Murat Seker a18ccb8b48
Refactor color utils (#955)
Co-authored-by: Paulchen Panther <16664240+Paulchen-Panther@users.noreply.github.com>
2020-08-08 13:22:37 +02:00

81 lines
2.1 KiB
C++

#pragma once
// STL includes
#include <cstdint>
#include <iostream>
///
/// Plain-Old-Data structure containing the red-green-blue color specification. Size of the
/// structure is exactly 3-bytes for easy writing to led-device
///
struct ColorRgbw
{
/// The red color channel
uint8_t red;
/// The green color channel
uint8_t green;
/// The blue color channel
uint8_t blue;
/// The white color channel
uint8_t white;
/// 'Black' RgbColor (0, 0, 0, 0)
static const ColorRgbw BLACK;
/// 'Red' RgbColor (255, 0, 0, 0)
static const ColorRgbw RED;
/// 'Green' RgbColor (0, 255, 0, 0)
static const ColorRgbw GREEN;
/// 'Blue' RgbColor (0, 0, 255, 0)
static const ColorRgbw BLUE;
/// 'Yellow' RgbColor (255, 255, 0, 0)
static const ColorRgbw YELLOW;
/// 'White' RgbColor (0, 0, 0, 255)
static const ColorRgbw WHITE;
};
/// Assert to ensure that the size of the structure is 'only' 4 bytes
static_assert(sizeof(ColorRgbw) == 4, "Incorrect size of ColorRgbw");
///
/// Stream operator to write ColorRgb to an outputstream (format "'{'[red]','[green]','[blue]'}'")
///
/// @param os The output stream
/// @param color The color to write
/// @return The output stream (with the color written to it)
///
inline std::ostream& operator<<(std::ostream& os, const ColorRgbw& color)
{
os << "{"
<< color.red << ","
<< color.green << ","
<< color.blue << ","
<< color.white <<
"}";
return os;
}
/// Compare operator to check if a color is 'equal' than another color
inline bool operator==(const ColorRgbw & lhs, const ColorRgbw & rhs)
{
return lhs.red == rhs.red &&
lhs.green == rhs.green &&
lhs.blue == rhs.blue &&
lhs.white == rhs.white;
}
/// Compare operator to check if a color is 'smaller' than another color
inline bool operator<(const ColorRgbw & lhs, const ColorRgbw & rhs)
{
return lhs.red < rhs.red &&
lhs.green < rhs.green &&
lhs.blue < rhs.blue &&
lhs.white < rhs.white;
}
/// Compare operator to check if a color is 'smaller' than or 'equal' to another color
inline bool operator<=(const ColorRgbw & lhs, const ColorRgbw & rhs)
{
return lhs < rhs || lhs == rhs;
}