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