I'm working with a C library ( Raylib ) that uses the following for color representation:
#define RED { 230, 41, 55, 255 }
// Color type, RGBA (32bit)
typedef struct Color {
unsigned char r;
unsigned char g;
unsigned char b;
unsigned char a;
} Color;
I want to define an enum of all the Color
objects that I will use in my palette in my C++
code.
But enum class
only allows integral kinds of values. What's the best way to have a fixed static set of values which are non-integral?
One approach I have in mind is just declare static constexpr
values in a struct
. Is this the right approach?
struct Color {
constexpr static auto MYRED = RED;
constexpr static auto MYBLUE = BLUE;
constexpr static auto MYGREEN = GREEN;
};
namespace RayLib {
using Color = ::Color;
inline constexpr Color Red = RED;
inline constexpr Color Blue = BLUE;
inline constexpr Color Green = GREEN;
}
is how I would do it.
You might also want:
namespace MyApp {
inline constexpr std::array Palette = {
RayLib::Red,
RayLib::Blue,
RayLib::Green,
RayLib::Fuscia
};
}
where MyApp
is the namespace you are using for app-specific code (in this case, the palette you are using in your app). (Apologies if I didn't get the deduction syntax quite right above)
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