mirror of
https://github.com/felt/tippecanoe.git
synced 2026-10-02 16:35:40 +02:00
Erica Fischer
430d8edd17
* Starting work on overzooming * Factor clipping out of geometry.cpp to simplify linkage * Pull out more geometry functions into now-badly-named clip.cpp * Not surprisingly, there is a bug * Found the bug * Make indent * Pass attributes through * Make formatting more consistent * Fix typos in comments * Fix the typos better * Add tippecanoe-overzoom to the install list * Give overzoom a predictable exit status * Forgot to translate to and from polygon ring closepaths * Fix geometry collapse at z21 * Add attribute stripping; don't generate layers if they have no features * Add docs for tippecanoe-overzoom (as it will be, not as it is) * Change overzoom to accept input and output files as arguments * Working on overzooming tests * Oops * Hook up and test the detail and buffer options, and the empty-tile case * Also test attribute stripping * Fix error message * Update changelog and version
92 lines
3.0 KiB
C++
92 lines
3.0 KiB
C++
#ifndef GEOMETRY_HPP
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#define GEOMETRY_HPP
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#include <vector>
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#include <atomic>
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#include <sqlite3.h>
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#include <stdio.h>
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#define VT_POINT 1
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#define VT_LINE 2
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#define VT_POLYGON 3
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#define VT_END 0
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#define VT_MOVETO 1
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#define VT_LINETO 2
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#define VT_CLOSEPATH 7
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// The bitfield is to make sizeof(draw) be 16 instead of 24
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// at the cost, apparently, of a 0.7% increase in running time
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// for packing and unpacking.
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struct draw {
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long long x : 40;
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signed char op;
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long long y : 40;
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signed char necessary;
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draw(int nop, long long nx, long long ny)
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: x(nx),
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op(nop),
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y(ny),
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necessary(0) {
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}
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draw()
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: x(0),
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op(0),
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y(0),
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necessary(0) {
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}
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bool operator<(draw const &s) const {
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if (y < s.y || (y == s.y && x < s.x)) {
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return true;
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} else {
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return false;
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}
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}
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bool operator==(draw const &s) const {
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return y == s.y && x == s.x;
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}
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bool operator!=(draw const &s) const {
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return y != s.y || x != s.x;
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}
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};
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typedef std::vector<draw> drawvec;
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struct serial_feature;
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drawvec decode_geometry(char **meta, int z, unsigned tx, unsigned ty, long long *bbox, unsigned initial_x, unsigned initial_y);
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void to_tile_scale(drawvec &geom, int z, int detail);
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drawvec from_tile_scale(drawvec const &geom, int z, int detail);
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drawvec remove_noop(drawvec geom, int type, int shift);
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drawvec clip_point(drawvec &geom, int z, long long buffer);
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drawvec clean_or_clip_poly(drawvec &geom, int z, int buffer, bool clip);
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drawvec simple_clip_poly(drawvec &geom, int z, int buffer);
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drawvec close_poly(drawvec &geom);
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drawvec reduce_tiny_poly(drawvec &geom, int z, int detail, bool *reduced, double *accum_area, serial_feature *this_feature, serial_feature *tiny_feature);
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int clip(double *x0, double *y0, double *x1, double *y1, double xmin, double ymin, double xmax, double ymax);
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drawvec clip_lines(drawvec &geom, int z, long long buffer);
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drawvec stairstep(drawvec &geom, int z, int detail);
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bool point_within_tile(long long x, long long y, int z);
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int quick_check(long long *bbox, int z, long long buffer);
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drawvec simplify_lines(drawvec &geom, int z, int detail, bool mark_tile_bounds, double simplification, size_t retain, drawvec const &shared_nodes);
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drawvec reorder_lines(drawvec &geom);
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drawvec fix_polygon(drawvec &geom);
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std::vector<drawvec> chop_polygon(std::vector<drawvec> &geoms);
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void check_polygon(drawvec &geom);
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double get_area(const drawvec &geom, size_t i, size_t j);
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double get_mp_area(drawvec &geom);
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drawvec polygon_to_anchor(const drawvec &geom);
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drawvec checkerboard_anchors(drawvec const &geom, int tx, int ty, int z, unsigned long long label_point);
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drawvec simple_clip_poly(drawvec &geom, long long x1, long long y1, long long x2, long long y2);
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drawvec clip_lines(drawvec &geom, long long x1, long long y1, long long x2, long long y2);
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drawvec clip_point(drawvec &geom, long long x1, long long y1, long long x2, long long y2);
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void visvalingam(drawvec &ls, size_t start, size_t end, double threshold, size_t retain);
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int pnpoly(const drawvec &vert, size_t start, size_t nvert, long long testx, long long testy);
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#endif
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