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Add an option to do line simplification only at zooms below maxzoom

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This commit is contained in:
Eric Fischer
2016-01-08 11:31:10 -08:00
parent 5e02bdd90a
commit 93d0767829
3 changed files with 7 additions and 1 deletions
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tile.cc
+4 -1
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@@ -479,6 +479,7 @@ struct partial {
int line_detail;
char *prevent;
char *additional;
int maxzoom;
};
struct partial_arg {
@@ -499,8 +500,9 @@ void *partial_feature_worker(void *v) {
int line_detail = (*partials)[i].line_detail;
char *prevent = (*partials)[i].prevent;
char *additional = (*partials)[i].additional;
int maxzoom = (*partials)[i].maxzoom;
if ((t == VT_LINE || t == VT_POLYGON) && !prevent['s' & 0xFF]) {
if ((t == VT_LINE || t == VT_POLYGON) && !(prevent['s' & 0xFF] || (z == maxzoom && prevent['S' & 0xFF]))) {
if (1 /* !reduced */) { // XXX why did this not simplify if reduced?
if (t == VT_LINE) {
geom = remove_noop(geom, t, 32 - z - line_detail);
@@ -806,6 +808,7 @@ long long write_tile(char **geoms, char *metabase, char *stringpool, int z, unsi
p.line_detail = line_detail;
p.prevent = prevent;
p.additional = additional;
p.maxzoom = maxzoom;
partials.push_back(p);
}
}