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Let Clipper clean up polygons again after scaling and simplification

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This commit is contained in:
Eric Fischer
2015-10-15 17:11:29 -07:00
parent 6a1895547d
commit f64e2c94e2
3 changed files with 41 additions and 143 deletions
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tile.cc
+7 -1
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@@ -580,7 +580,7 @@ long long write_tile(char **geoms, char *metabase, char *stringpool, unsigned *f
geom = clip_lines(geom, z, line_detail, buffer);
}
if (t == VT_POLYGON) {
geom = clip_poly(geom, z, line_detail, buffer);
geom = clean_or_clip_poly(geom, z, line_detail, buffer, true);
}
if (t == VT_POINT) {
geom = clip_point(geom, z, line_detail, buffer);
@@ -687,6 +687,12 @@ long long write_tile(char **geoms, char *metabase, char *stringpool, unsigned *f
to_tile_scale(geom, z, line_detail);
if (t == VT_POLYGON) {
// Scaling may have made the polygon degenerate.
// Give Clipper a chance to try to fix it.
geom = clean_or_clip_poly(geom, 0, 0, 0, false);
}
if (t == VT_POINT || to_feature(geom, NULL)) {
struct coalesce c;