diegoripley/tippecanoe
1
0
Fork 0
mirror of https://github.com/felt/tippecanoe.git synced 2026-10-04 01:15:41 +02:00
Code Issues Packages Projects Releases Wiki Activity

Even-odd wagyu after scaling to counterbalance ring reversals

Browse Source
This commit is contained in:
Erica Fischer
2023-12-15 09:35:22 -08:00
parent 15a3e313ff
commit 318f05ad45
4 changed files with 54 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files
clip.cpp
+8 -3
View File
@@ -249,7 +249,7 @@ static void decode_clipped(mapbox::geometry::multi_polygon<long long> &t, drawve
}
}
drawvec clean_or_clip_poly(drawvec &geom, int z, int buffer, bool clip, bool try_scaling) {
drawvec clean_or_clip_poly(drawvec &geom, int z, int buffer, bool clip, bool try_scaling, bool even_odd) {
geom = remove_noop(geom, VT_POLYGON, 0);
mapbox::geometry::multi_polygon<long long> result;
@@ -308,7 +308,11 @@ drawvec clean_or_clip_poly(drawvec &geom, int z, int buffer, bool clip, bool try
try {
result.clear();
wagyu.execute(mapbox::geometry::wagyu::clip_type_union, result, mapbox::geometry::wagyu::fill_type_positive, mapbox::geometry::wagyu::fill_type_positive);
if (even_odd) {
wagyu.execute(mapbox::geometry::wagyu::clip_type_union, result, mapbox::geometry::wagyu::fill_type_even_odd, mapbox::geometry::wagyu::fill_type_even_odd);
} else {
wagyu.execute(mapbox::geometry::wagyu::clip_type_union, result, mapbox::geometry::wagyu::fill_type_positive, mapbox::geometry::wagyu::fill_type_positive);
}
} catch (std::runtime_error &e) {
FILE *f = fopen("/tmp/wagyu.log", "w");
fprintf(f, "%s\n", e.what());
@@ -858,7 +862,8 @@ std::string overzoom(mvt_tile tile, int oz, int ox, int oy, int nz, int nx, int
geom = remove_noop(geom, t, 0);
if (t == VT_POLYGON) {
geom = clean_or_clip_poly(geom, 0, 0, false, false);
// this is after scaling, so even-odd to balance scaling errors between features
geom = clean_or_clip_poly(geom, 0, 0, false, false, true);
geom = close_poly(geom);
}