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Add gfx::luminance(color)

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This commit is contained in:
Nikita Lisitsa 2025-10-11 00:39:57 +03:00
parent 424bf5f533
commit b1ea7bc763
1 changed files with 6 additions and 0 deletions
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6
libs/gfx/include/psemek/gfx/color.hpp
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@ -382,6 +382,12 @@ namespace psemek::gfx
return result;
}
template <std::floating_point T, std::size_t N>
T luminance(math::vector<T, N> const & c)
{
return c[0] * T(0.299) + c[1] * T(0.587) + c[2] * T(0.114);
}
std::optional<color_rgba> parse_color(std::string_view const & text);
}