1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
|
#pragma once
#include <mbgl/tile/tile.hpp>
#include <mbgl/tile/tile_loader.hpp>
#include <mbgl/tile/raster_dem_tile_worker.hpp>
#include <mbgl/actor/actor.hpp>
namespace mbgl {
class Tileset;
class TileParameters;
class HillshadeBucket;
enum class DEMTileNeighbors : uint8_t {
// 0b00000000
Empty = 0 << 1,
// 0b00000001
Left = 1 << 0,
// 0b00000010
Right = 1 << 1,
// 0b00000100
TopLeft = 1 << 2,
// 0b00001000
TopCenter = 1 << 3,
// 0b00010000
TopRight = 1 << 4,
// 0b00100000
BottomLeft = 1 << 5,
// 0b01000000
BottomCenter = 1 << 6,
// 0b10000000
BottomRight = 1 << 7,
// helper enums for tiles with no upper/lower neighbors
// and completely backfilled tiles
// 0b00011100
NoUpper = 0b00011100,
// 0b11100000
NoLower = 0b11100000,
// 0b11111111
Complete = 0b11111111
};
inline DEMTileNeighbors operator|(DEMTileNeighbors a, DEMTileNeighbors b) {
return static_cast<DEMTileNeighbors>(int(a) | int(b));
};
inline DEMTileNeighbors operator&(DEMTileNeighbors a, DEMTileNeighbors b) {
return static_cast<DEMTileNeighbors>(int(a) & int(b));
}
inline bool operator!=(DEMTileNeighbors a, DEMTileNeighbors b) {
return static_cast<unsigned char>(a) != static_cast<unsigned char>(b);
}
namespace style {
class Layer;
} // namespace style
class RasterDEMTile : public Tile {
public:
RasterDEMTile(const OverscaledTileID&,
const TileParameters&,
const Tileset&);
~RasterDEMTile() override;
void setNecessity(TileNecessity) final;
void setError(std::exception_ptr);
void setMetadata(optional<Timestamp> modified, optional<Timestamp> expires);
void setData(std::shared_ptr<const std::string> data);
void upload(gfx::Context&) override;
Bucket* getBucket(const style::Layer::Impl&) const override;
HillshadeBucket* getBucket() const;
void backfillBorder(const RasterDEMTile& borderTile, const DEMTileNeighbors mask);
// neighboringTiles is a bitmask for which neighboring tiles have been backfilled
// there are max 8 possible neighboring tiles, so each bit represents one neighbor
DEMTileNeighbors neighboringTiles = DEMTileNeighbors::Empty;
void setMask(TileMask&&) override;
void onParsed(std::unique_ptr<HillshadeBucket> result, uint64_t correlationID);
void onError(std::exception_ptr, uint64_t correlationID);
private:
TileLoader<RasterDEMTile> loader;
std::shared_ptr<Mailbox> mailbox;
Actor<RasterDEMTileWorker> worker;
uint64_t correlationID = 0;
Tileset::DEMEncoding encoding;
// Contains the Bucket object for the tile. Buckets are render
// objects and they get added by tile parsing operations.
std::unique_ptr<HillshadeBucket> bucket;
};
} // namespace mbgl
|
