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#ifndef MBGL_MAP_TILE
#define MBGL_MAP_TILE
#include <mbgl/util/vec.hpp>
#include <mbgl/util/mat4.hpp>
#include <mbgl/util/noncopyable.hpp>
#include <cstdint>
#include <forward_list>
#include <string>
#include <bitset>
#include <memory>
namespace mbgl {
class TileData;
struct ClipID {
explicit ClipID() {}
explicit ClipID(const std::bitset<8> &mask, uint8_t length) : mask(mask), length(length) {}
explicit ClipID(const std::string &mask, uint8_t length) : mask(mask), length(length) {}
std::bitset<8> mask;
uint8_t length = 0;
};
class Tile : private util::noncopyable {
public:
struct ID {
const int16_t w = 0;
const int8_t z = 0;
const int32_t x = 0, y = 0;
inline explicit ID(int8_t z, int32_t x, int32_t y)
: w((x < 0 ? x - (1 << z) + 1 : x) / (1 << z)), z(z), x(x), y(y) {}
inline uint64_t to_uint64() const {
return ((std::pow(2, z) * y + x) * 32) + z;
}
inline operator std::string() const {
return std::to_string(z) + "/" + std::to_string(x) + "/" + std::to_string(y);
}
inline bool operator==(const ID& rhs) const {
return w == rhs.w && z == rhs.z && x == rhs.x && y == rhs.y;
}
inline bool operator<(const ID &rhs) const {
if (w != rhs.w) return w < rhs.w;
if (z != rhs.z) return z < rhs.z;
if (x != rhs.x) return x < rhs.x;
return y < rhs.y;
}
ID parent(int8_t z) const;
ID normalized() const;
std::forward_list<ID> children(int32_t z) const;
bool isChildOf(const Tile::ID &id) const;
};
public:
explicit Tile(const ID& id);
public:
const Tile::ID id;
ClipID clip;
mat4 matrix;
std::shared_ptr<TileData> data;
};
}
#endif
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