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#ifndef MBGL_UTIL_VEC
#define MBGL_UTIL_VEC
#include <limits>
#include <type_traits>
#include <cmath>
#include <cstdint>
#include <array>
namespace mbgl {
template <typename T = double>
struct vec2 {
struct null {};
typedef T Type;
T x, y;
inline vec2() = default;
template<typename U = T, typename std::enable_if<std::numeric_limits<U>::has_quiet_NaN, int>::type = 0>
inline vec2(null) : x(std::numeric_limits<T>::quiet_NaN()), y(std::numeric_limits<T>::quiet_NaN()) {}
template<typename U = T, typename std::enable_if<!std::numeric_limits<U>::has_quiet_NaN, int>::type = 0>
inline vec2(null) : x(std::numeric_limits<T>::min()), y(std::numeric_limits<T>::min()) {}
inline vec2(const vec2& o) = default;
template<typename U>
inline vec2(const U& u) : x(u.x), y(u.y) {}
inline vec2(T x_, T y_) : x(x_), y(y_) {}
inline bool operator==(const vec2& rhs) const {
return x == rhs.x && y == rhs.y;
}
template <typename O>
inline typename std::enable_if<std::is_arithmetic<O>::value, vec2>::type
operator*(O o) const {
return {x * o, y * o};
}
inline void operator*=(T o) {
x *= o;
y *= o;
}
template <typename O>
inline typename std::enable_if<std::is_arithmetic<O>::value, vec2>::type
operator/(O o) const {
return {x / o, y / o};
}
inline void operator/=(T o) {
x /= o;
y /= o;
}
inline vec2<T> operator *(const std::array<float, 16>& matrix) {
return { x * matrix[0] + y * matrix[4] + matrix[12], x * matrix[1] + y * matrix[5] + matrix[13] };
}
template <typename O>
inline typename std::enable_if<std::is_arithmetic<O>::value, vec2>::type
operator-(O o) const {
return {x - o, y - o};
}
template <typename O>
inline typename std::enable_if<!std::is_arithmetic<O>::value, vec2>::type
operator-(const O &o) const {
return vec2<T>(x - o.x, y - o.y);
}
template <typename O>
inline typename std::enable_if<!std::is_arithmetic<O>::value, vec2>::type
operator+(const O &o) const {
return vec2<T>(x + o.x, y + o.y);
}
template <typename M>
inline vec2 matMul(const M &m) const {
return {m[0] * x + m[1] * y, m[2] * x + m[3] * y};
}
template<typename U = T, typename std::enable_if<std::numeric_limits<U>::has_quiet_NaN, int>::type = 0>
explicit operator bool() const {
return !std::isnan(x) && !std::isnan(y);
}
template<typename U = T, typename std::enable_if<!std::numeric_limits<U>::has_quiet_NaN, int>::type = 0>
explicit operator bool() const {
return x != std::numeric_limits<T>::min() && y != std::numeric_limits<T>::min();
}
};
template <typename T = double>
struct vec4 {
T x, y, z, w;
inline vec4() = default;
inline vec4(const vec4& o) : x(o.x), y(o.y), z(o.z), w(o.w) {}
inline vec4(T x_, T y_, T z_, T w_) : x(x_), y(y_), z(z_), w(w_) {}
inline bool operator==(const vec4& rhs) const {
return x == rhs.x && y == rhs.y && z == rhs.z && w == rhs.w;
}
template<typename U = T, typename std::enable_if<std::numeric_limits<U>::has_quiet_NaN, int>::type = 0>
explicit operator bool() const {
return !std::isnan(x) && !std::isnan(y) && !std::isnan(z) && !std::isnan(w);
}
template<typename U = T, typename std::enable_if<!std::numeric_limits<U>::has_quiet_NaN, int>::type = 0>
explicit operator bool() const {
return x != std::numeric_limits<T>::min()
&& y != std::numeric_limits<T>::min()
&& z != std::numeric_limits<T>::min()
&& w != std::numeric_limits<T>::min();
}
};
} // namespace mbgl
#endif // MBGL_UTIL_VEC
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