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Add an option not to clip features and to include each exactly once per zoom

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This commit is contained in:
Eric Fischer
2016-04-20 15:06:43 -07:00
parent 41099ed731
commit ea638914ce
14 changed files with 2477 additions and 77 deletions
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tile.cc
+13 -4
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@@ -510,7 +510,7 @@ void *partial_feature_worker(void *v) {
geom = remove_noop(geom, t, 32 - z - line_detail);
}
geom = simplify_lines(geom, z, line_detail, !prevent[P_CLIPPING]);
geom = simplify_lines(geom, z, line_detail, !(prevent[P_CLIPPING] || prevent[P_DUPLICATION]));
}
}
@@ -757,7 +757,9 @@ long long write_tile(FILE *geoms, long long *geompos_in, char *metabase, char *s
}
}
if (quick != 1) {
// Can't accept the quick check if guaranteeing no duplication, since the
// overlap might have been in the buffer.
if (quick != 1 || prevent[P_DUPLICATION]) {
drawvec clipped;
// Do the clipping, even if we are going to include the whole feature,
@@ -779,7 +781,13 @@ long long write_tile(FILE *geoms, long long *geompos_in, char *metabase, char *s
// Must clip at z0 even if we don't want clipping, to handle features
// that are duplicated across the date line
if (prevent[P_CLIPPING] && z != 0) {
if (prevent[P_DUPLICATION] && z != 0) {
if (point_within_tile((bbox[0] + bbox[2]) / 2, (bbox[1] + bbox[3]) / 2, z, line_detail, buffer)) {
// geom is unchanged
} else {
geom.clear();
}
} else if (prevent[P_CLIPPING] && z != 0) {
if (clipped.size() == 0) {
geom.clear();
} else {
@@ -965,7 +973,8 @@ long long write_tile(FILE *geoms, long long *geompos_in, char *metabase, char *s
for (size_t x = 0; x < features[j].size(); x++) {
if (features[j][x].coalesced && features[j][x].type == VT_LINE) {
features[j][x].geom = remove_noop(features[j][x].geom, features[j][x].type, 0);
features[j][x].geom = simplify_lines(features[j][x].geom, 32, 0, !prevent[P_CLIPPING]);
features[j][x].geom = simplify_lines(features[j][x].geom, 32, 0,
!(prevent[P_CLIPPING] || prevent[P_DUPLICATION]));
}
if (features[j][x].type == VT_POLYGON) {