diegoripley/tippecanoe
1
0
Fork 0
mirror of https://github.com/felt/tippecanoe.git synced 2026-10-03 00:45:41 +02:00
Code Issues Packages Projects Releases Wiki Activity

Clip the clip regions to the tile bounds to reduce their complexity

Browse Source
This commit is contained in:
Erica Fischer
2024-11-27 12:22:36 -08:00
parent 641f97f7db
commit 75511a74cd
3 changed files with 34 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files
overzoom.cpp
+28
View File
@@ -259,6 +259,34 @@ int main(int argc, char **argv) {
fclose(f);
}
// clip the clip polygons, if any, to the tile bounds,
// to reduce their complexity
if (clipbboxes.size() > 0) {
long long wx1 = (nx - buffer / 256.0) * (1LL << (32 - nz));
long long wy1 = (ny - buffer / 256.0) * (1LL << (32 - nz));
long long wx2 = (nx + 1 + buffer / 256.0) * (1LL << (32 - nz));
long long wy2 = (ny + 1 + buffer / 256.0) * (1LL << (32 - nz));
drawvec tile_bounds;
tile_bounds.emplace_back(VT_MOVETO, wx1, wy1);
tile_bounds.emplace_back(VT_LINETO, wx2, wy1);
tile_bounds.emplace_back(VT_LINETO, wx2, wy2);
tile_bounds.emplace_back(VT_LINETO, wx1, wy2);
tile_bounds.emplace_back(VT_LINETO, wx1, wy1);
for (auto &c : clipbboxes) {
c.minx = std::max(c.minx, wx1);
c.miny = std::max(c.miny, wy1);
c.maxx = std::min(c.maxx, wx2);
c.maxy = std::min(c.maxy, wy2);
if (c.dv.size() > 0) {
c.dv = clip_poly_poly(c.dv, tile_bounds);
}
}
}
json_object *json_filter = NULL;
if (filter.size() > 0) {
json_filter = parse_filter(filter.c_str());