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Accept a clip polygon argument to tippecanoe-overzoom

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Erica Fischer
2024-11-21 16:32:00 -08:00
parent 0a4f6fe546
commit f9ec00d50d
6 changed files with 56 additions and 5 deletions
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clip.cpp
+37
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@@ -13,6 +13,7 @@
#include "serial.hpp"
#include "attribute.hpp"
#include "projection.hpp"
#include "read_json.hpp"
static std::vector<std::pair<double, double>> clip_poly1(std::vector<std::pair<double, double>> &geom,
long long minx, long long miny, long long maxx, long long maxy,
@@ -1075,6 +1076,42 @@ bool pnpoly_mp(std::vector<mvt_geometry> const &geom, long long x, long long y)
return found;
}
clipbbox parse_clip_poly(std::string arg) {
json_pull *jp = json_begin_string(arg.c_str());
json_object *j = json_read_tree(jp);
if (j->type != JSON_HASH) {
fprintf(stderr, "Expected JSON geometry object, not %s\n", arg.c_str());
}
std::pair<int, drawvec> parsed_geometry = parse_geometry(j, jp, j, 0, 0, 0, 1LL << 32, false);
json_end(jp);
clipbbox out;
out.minx = LLONG_MAX;
out.miny = LLONG_MAX;
out.maxx = LLONG_MIN;
out.maxy = LLONG_MIN;
for (auto const &d : parsed_geometry.second) {
if (d.op == VT_MOVETO || d.op == VT_LINETO) {
if (d.x < out.minx) {
out.minx = d.x;
}
if (d.y < out.miny) {
out.miny = d.y;
}
if (d.x > out.maxx) {
out.maxx = d.x;
}
if (d.y > out.maxy) {
out.maxy = d.y;
}
}
}
out.dv = std::move(parsed_geometry.second);
return out;
}
std::string overzoom(std::vector<input_tile> const &tiles, int nz, int nx, int ny,
int detail_or_unspecified, int buffer,
std::set<std::string> const &keep,