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Add a flag to let you drop lines at low zooms just like points

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This commit is contained in:
Eric Fischer 2015-04-21 08:19:51 -07:00
parent 12fb2c969c
commit 1381f0f276
2 changed files with 8 additions and 2 deletions
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2
README.md
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@ -83,6 +83,8 @@ Options
* -pc: Don't coalesce features with the same properties
* -pf: Don't limit tiles to 200,000 features
* -pk: Don't limit tiles to 500K bytes
* -po: Don't reorder features to put the same properties in sequence
* -pl: Let "dot" simplification apply to lines too
Example
-------

8
tile.cc
View File

@ -514,7 +514,7 @@ long long write_tile(char **geoms, char *metabase, unsigned *file_bbox, int z, u
continue;
}
if (t == VT_POINT && gamma >= 0) {
if (gamma >= 0 && (t == VT_POINT || (prevent['l' & 0xFF] && t == VT_LINE))) {
seq++;
if (seq >= 0) {
seq -= interval;
@ -611,16 +611,20 @@ long long write_tile(char **geoms, char *metabase, unsigned *file_bbox, int z, u
}
for (j = 0; j < nlayers; j++) {
std::sort(features[j].begin(), features[j].end());
if (!prevent['o'] & 0xFF) {
std::sort(features[j].begin(), features[j].end());
}
std::vector<coalesce> out;
unsigned x;
for (x = 0; x < features[j].size(); x++) {
unsigned y = out.size() - 1;
#if 0
if (out.size() > 0 && coalcmp(&features[j][x], &out[y]) < 0) {
fprintf(stderr, "\nfeature out of order\n");
}
#endif
if (!prevent['c' & 0xFF] && out.size() > 0 && out[y].geom.size() + features[j][x].geom.size() < 20000 && coalcmp(&features[j][x], &out[y]) == 0 && features[j][x].type != VT_POINT) {
unsigned z;