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Fix the feature bounding box after clipping

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This commit is contained in:
Eric Fischer
2018-10-23 10:55:07 -07:00
parent 5dfbc4a281
commit 1cf3b0accc
4 changed files with 46 additions and 17 deletions
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serial.cpp
+29
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@@ -392,9 +392,38 @@ int serialize_feature(struct serialization_state *sst, serial_feature &sf) {
sf.geometry = simple_clip_poly(sf.geometry, c.minx >> geometry_scale, c.miny >> geometry_scale, c.maxx >> geometry_scale, c.maxy >> geometry_scale);
} else if (sf.t == VT_LINE) {
sf.geometry = clip_lines(sf.geometry, c.minx >> geometry_scale, c.miny >> geometry_scale, c.maxx >> geometry_scale, c.maxy >> geometry_scale);
sf.geometry = remove_noop(sf.geometry, sf.t, 0);
} else if (sf.t == VT_POINT) {
sf.geometry = clip_point(sf.geometry, c.minx >> geometry_scale, c.miny >> geometry_scale, c.maxx >> geometry_scale, c.maxy >> geometry_scale);
}
sf.bbox[0] = LLONG_MAX;
sf.bbox[1] = LLONG_MAX;
sf.bbox[2] = LLONG_MIN;
sf.bbox[3] = LLONG_MIN;
for (auto &g : sf.geometry) {
long long x = g.x << geometry_scale;
long long y = g.y << geometry_scale;
if (x < sf.bbox[0]) {
sf.bbox[0] = x;
}
if (y < sf.bbox[1]) {
sf.bbox[1] = y;
}
if (x > sf.bbox[2]) {
sf.bbox[2] = x;
}
if (y > sf.bbox[3]) {
sf.bbox[3] = y;
}
}
}
if (sf.geometry.size() == 0) {
// Feature was clipped away
return 1;
}
if (!sf.has_id) {