forked from felt/tippecanoe
-
Notifications
You must be signed in to change notification settings - Fork 0
/
geometry.hpp
109 lines (93 loc) · 4.2 KB
/
geometry.hpp
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
106
107
108
109
#ifndef GEOMETRY_HPP
#define GEOMETRY_HPP
#include <vector>
#include <atomic>
#include <set>
#include <string>
#include <sqlite3.h>
#include <stdio.h>
#include <mvt.hpp>
#define VT_POINT 1
#define VT_LINE 2
#define VT_POLYGON 3
#define VT_END 0
#define VT_MOVETO 1
#define VT_LINETO 2
#define VT_CLOSEPATH 7
// The bitfield is to make sizeof(draw) be 16 instead of 24
// at the cost, apparently, of a 0.7% increase in running time
// for packing and unpacking.
struct draw {
long long x : 40;
signed char op;
long long y : 40;
signed char necessary;
draw(int nop, long long nx, long long ny)
: x(nx),
op(nop),
y(ny),
necessary(0) {
}
draw()
: x(0),
op(0),
y(0),
necessary(0) {
}
bool operator<(draw const &s) const {
if (y < s.y || (y == s.y && x < s.x)) {
return true;
} else {
return false;
}
}
bool operator>(draw const &s) const {
return s < *this;
}
bool operator==(draw const &s) const {
return y == s.y && x == s.x;
}
bool operator!=(draw const &s) const {
return y != s.y || x != s.x;
}
};
typedef std::vector<draw> drawvec;
struct serial_feature;
drawvec decode_geometry(char **meta, int z, unsigned tx, unsigned ty, long long *bbox, unsigned initial_x, unsigned initial_y);
void to_tile_scale(drawvec &geom, int z, int detail);
drawvec from_tile_scale(drawvec const &geom, int z, int detail);
drawvec remove_noop(drawvec geom, int type, int shift);
drawvec clip_point(drawvec &geom, int z, long long buffer);
drawvec clean_or_clip_poly(drawvec &geom, int z, int buffer, bool clip, bool try_scaling);
drawvec close_poly(drawvec &geom);
drawvec reduce_tiny_poly(drawvec &geom, int z, int detail, bool *still_needs_simplification, bool *reduced_away, double *accum_area, serial_feature *this_feature, serial_feature *tiny_feature);
int clip(long long *x0, long long *y0, long long *x1, long long *y1, long long xmin, long long ymin, long long xmax, long long ymax);
drawvec clip_lines(drawvec &geom, int z, long long buffer);
drawvec stairstep(drawvec &geom, int z, int detail);
bool point_within_tile(long long x, long long y, int z);
int quick_check(long long *bbox, int z, long long buffer);
drawvec simplify_lines(drawvec &geom, int z, int tx, int ty, int detail, bool mark_tile_bounds, double simplification, size_t retain, drawvec const &shared_nodes, struct node *shared_nodes_map, size_t nodepos);
drawvec reorder_lines(drawvec &geom);
drawvec fix_polygon(drawvec &geom);
std::vector<drawvec> chop_polygon(std::vector<drawvec> &geoms);
void check_polygon(drawvec &geom);
double get_area(const drawvec &geom, size_t i, size_t j);
double get_mp_area(drawvec &geom);
drawvec polygon_to_anchor(const drawvec &geom);
drawvec checkerboard_anchors(drawvec const &geom, int tx, int ty, int z, unsigned long long label_point);
drawvec simple_clip_poly(drawvec &geom, int z, int buffer, drawvec &shared_nodes, bool prevent_simplify_shared_nodes);
drawvec simple_clip_poly(drawvec &geom, long long x1, long long y1, long long x2, long long y2, bool prevent_simplify_shared_nodes);
drawvec simple_clip_poly(drawvec &geom, long long x1, long long y1, long long x2, long long y2,
long long ax, long long ay, long long bx, long long by, drawvec &shared_nodes, bool prevent_simplify_shared_nodes);
drawvec clip_lines(drawvec &geom, long long x1, long long y1, long long x2, long long y2);
drawvec clip_point(drawvec &geom, long long x1, long long y1, long long x2, long long y2);
void visvalingam(drawvec &ls, size_t start, size_t end, double threshold, size_t retain);
int pnpoly(const drawvec &vert, size_t start, size_t nvert, long long testx, long long testy);
double distance_from_line(long long point_x, long long point_y, long long segA_x, long long segA_y, long long segB_x, long long segB_y);
std::string overzoom(mvt_tile tile, int oz, int ox, int oy, int nz, int nx, int ny,
int detail, int buffer, std::set<std::string> const &keep, bool do_compress,
std::vector<std::pair<unsigned, unsigned>> *next_overzoomed_tiles);
std::string overzoom(std::string s, int oz, int ox, int oy, int nz, int nx, int ny,
int detail, int buffer, std::set<std::string> const &keep, bool do_compress,
std::vector<std::pair<unsigned, unsigned>> *next_overzoomed_tiles);
#endif