109 lines
1.8 KiB
C++
109 lines
1.8 KiB
C++
#pragma once
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#include <array>
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#include <cstdint>
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namespace lt::math {
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template<typename T = float>
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struct vec4_impl
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{
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constexpr vec4_impl(): x(), y(), z(), w()
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{
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}
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constexpr explicit vec4_impl(T scalar): x(scalar), y(scalar), z(scalar), w(scalar)
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{
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}
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constexpr vec4_impl(T x, T y, T z, T w): x(x), y(y), z(z), w(w)
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{
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}
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[[nodiscard]] auto operator==(const vec4_impl<T> &other) const -> bool
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{
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return x == other.x && y == other.y && z == other.z && w == other.w;
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}
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[[nodiscard]] auto operator!=(const vec4_impl<T> &other) const -> bool
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{
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return !(*this == other);
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}
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[[nodiscard]] constexpr auto operator-(const vec4_impl<T> &other) const -> vec4_impl
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{
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return {
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x - other.x,
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y - other.y,
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z - other.z,
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w - other.w,
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};
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}
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[[nodiscard]] constexpr auto operator[](size_t idx) -> T &
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{
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return values[idx];
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}
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[[nodiscard]] constexpr auto operator[](size_t idx) const -> const T &
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{
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return values[idx];
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}
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friend auto operator<<(std::ostream &stream, vec4_impl<T> value) -> std::ostream &
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{
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stream << value.x << ", " << value.y << ", " << value.z << ", " << value.w;
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return stream;
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}
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// NOLINTNEXTLINE
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union
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{
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struct
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{
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T x;
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T y;
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T z;
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T w;
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};
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struct
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{
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T r;
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T g;
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T b;
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T a;
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};
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struct
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{
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std::array<T, 4> values;
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};
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};
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};
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using vec4 = vec4_impl<float>;
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using ivec4 = vec4_impl<int32_t>;
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using uvec4 = vec4_impl<uint32_t>;
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} // namespace lt::math
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template<typename T>
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struct std::formatter<lt::math::vec4_impl<T>>
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{
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constexpr auto parse(std::format_parse_context &context)
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{
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return context.begin();
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}
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auto format(const lt::math::vec4_impl<T> &val, std::format_context &context) const
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{
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return std::format_to(context.out(), "{}, {}, {}, {}", val.x, val.y, val.z, val.w);
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}
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};
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