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Fix cases where nodes were not being added at the tile boundary

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This commit is contained in:
Erica Fischer
2023-05-24 12:27:16 -07:00
parent 8ef605393a
commit 5a022b1cdb
2 changed files with 23 additions and 6 deletions
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geometry.cpp
+14 -5
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@@ -663,6 +663,7 @@ static std::vector<std::pair<double, double>> clip_poly1(std::vector<std::pair<d
// now outside the buffer
if (prevent[P_SIMPLIFY_SHARED_NODES]) {
out.push_back(intersect(S, E, edge, ax, ay, bx, by)); // on tile boundary
edge_nodes.push_back(draw(VT_MOVETO, std::round(out.back().first), std::round(out.back().second)));
}
out.push_back(intersect(S, E, edge, minx, miny, maxx, maxy)); // on buffer edge
} else if (!inside(E, edge, ax, ay, bx, by)) {
@@ -706,6 +707,9 @@ static std::vector<std::pair<double, double>> clip_poly1(std::vector<std::pair<d
drawvec simple_clip_poly(drawvec &geom, long long minx, long long miny, long long maxx, long long maxy,
long long ax, long long ay, long long bx, long long by, drawvec &edge_nodes) {
drawvec out;
if (prevent[P_SIMPLIFY_SHARED_NODES]) {
geom = remove_noop(geom, VT_POLYGON, 0);
}
for (size_t i = 0; i < geom.size(); i++) {
if (geom[i].op == VT_MOVETO) {
@@ -903,9 +907,19 @@ int quick_check(long long *bbox, int z, long long buffer) {
long long min = 0;
long long area = 1LL << (32 - z);
// bbox entirely within the tile proper
if (bbox[0] > min && bbox[1] > min && bbox[2] < area && bbox[3] < area) {
return 1;
}
min -= buffer * area / 256;
area += buffer * area / 256;
// bbox entirely within the tile, including its buffer
if (bbox[0] > min && bbox[1] > min && bbox[2] < area && bbox[3] < area) {
return 3;
}
// bbox entirely outside the tile
if (bbox[0] > area || bbox[1] > area) {
return 0;
@@ -914,11 +928,6 @@ int quick_check(long long *bbox, int z, long long buffer) {
return 0;
}
// bbox entirely within the tile
if (bbox[0] > min && bbox[1] > min && bbox[2] < area && bbox[3] < area) {
return 1;
}
// some overlap of edge
return 2;
}