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Clipping seems to be semi-OK. Inserting edge points is not.

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This commit is contained in:
Eric Fischer 2018-06-13 14:35:23 -07:00
parent 343829a52f
commit 87d372e629
1 changed files with 15 additions and 1 deletions
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16
vt3.cpp
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@ -116,11 +116,13 @@ static std::vector<mvt_geometry> remove_noop(std::vector<mvt_geometry> geom, std
for (size_t i = 0; i < geom.size(); i++) {
if (geom[i].op == mvt_moveto && i + 1 < geom.size() && geom[i + 1].op == mvt_moveto) {
if (geom[i].id != 0) {
#if 0
fprintf(stderr, "Removing a moveto with an id %ld\n", geom[i].id);
dump(geom);
fprintf(stderr, "Orig was\n");
dump(orig);
exit(EXIT_FAILURE);
#endif
}
} else {
out.push_back(geom[i]);
@ -230,6 +232,7 @@ void split_feature(mvt_layer const &layer, mvt_feature const &feature, std::vect
std::vector<mvt_geometry> ngeom;
long pointid = 0;
#if 0
// Part 1: Assign (phantom) point IDs in the middle of any
// segments that cross from one sub-tile to another
@ -290,6 +293,8 @@ void split_feature(mvt_layer const &layer, mvt_feature const &feature, std::vect
ngeom.push_back(ogeom[i]);
}
#endif
ngeom = ogeom;
// Part 2: Assign (real) point IDs for any points that are on a sub-tile edge
for (size_t i = 0; i < ngeom.size(); i++) {
@ -346,7 +351,7 @@ mvt_tile split_and_merge(mvt_tile tile, int tile_zoom) {
// actually needed for the sub-features.
nl.version = layer.version;
nl.extent = layer.extent >> tile_zoom;
nl.extent = layer.extent; // >> tile_zoom;
nl.name = layer.name;
nl.keys = layer.keys;
nl.values = layer.values;
@ -371,6 +376,15 @@ mvt_tile split_and_merge(mvt_tile tile, int tile_zoom) {
// Recreate original tile from decoded sub-tiles
tile.layers.clear();
for (size_t x = 0; x < n; x++) {
for (size_t y = 0; y < n; y++) {
for (size_t k = 0; k < subtiles[x][y].layers.size(); k++) {
tile.layers.push_back(subtiles[x][y].layers[k]);
}
}
}
// Verify that the original data has been recreated
return tile;