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Merge pull request #215 from mapbox/no-clipping

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Add an option not to clip features if they appear in the tile at all
This commit is contained in:
Eric Fischer
2016-04-21 10:36:51 -07:00
parent 694fa8ee97 ea638914ce
commit 2607a76c63
15 changed files with 6644 additions and 14 deletions
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CHANGELOG.md
+4
View File
@@ -1,3 +1,7 @@
## 1.9.15
* Add option not to clip features
## 1.9.14 ## 1.9.14
* Clean up polygons after coalescing, if necessary * Clean up polygons after coalescing, if necessary
README.md
+2
View File
@@ -128,6 +128,8 @@ resolution is obtained than by using a smaller _maxzoom_ or _detail_.
* -pd or --force-feature-limit: Dynamically drop some fraction of features from large tiles to keep them under the 500K size limit. It will probably look ugly at the tile boundaries. * -pd or --force-feature-limit: Dynamically drop some fraction of features from large tiles to keep them under the 500K size limit. It will probably look ugly at the tile boundaries.
* -pi or --preserve-input-order: Preserve the original input order of features as the drawing order instead of ordering geographically. (This is implemented as a restoration of the original order at the end, so that dot-dropping is still geographic, which means it also undoes -ao). * -pi or --preserve-input-order: Preserve the original input order of features as the drawing order instead of ordering geographically. (This is implemented as a restoration of the original order at the end, so that dot-dropping is still geographic, which means it also undoes -ao).
* -pp or --no-polygon-splitting: Don't split complex polygons (over 700 vertices after simplification) into multiple features. * -pp or --no-polygon-splitting: Don't split complex polygons (over 700 vertices after simplification) into multiple features.
* -pc or --no-clipping: Don't clip features to the size of the tile. If a feature overlaps the tile's bounds or buffer at all, it is included completely. Be careful: this can produce very large tilesets, especially with large polygons.
* -pD or --no-duplication: As with --no-clipping, each feature is included intact instead of cut to tile boundaries. In addition, it is included only in a single tile per zoom level rather than potentially in multiple copies. Clients of the tileset must check adjacent tiles (possibly some distance away) to ensure they have all features.
* -q or --quiet: Work quietly instead of reporting progress * -q or --quiet: Work quietly instead of reporting progress
Example Example
geojson.c
+29 -3
View File
@@ -2512,6 +2512,8 @@ int main(int argc, char **argv) {
} }
static struct option long_options[] = { static struct option long_options[] = {
{"output", required_argument, 0, 'o'},
{"name", required_argument, 0, 'n'}, {"name", required_argument, 0, 'n'},
{"layer", required_argument, 0, 'l'}, {"layer", required_argument, 0, 'l'},
{"attribution", required_argument, 0, 'A'}, {"attribution", required_argument, 0, 'A'},
@@ -2522,7 +2524,6 @@ int main(int argc, char **argv) {
{"full-detail", required_argument, 0, 'd'}, {"full-detail", required_argument, 0, 'd'},
{"low-detail", required_argument, 0, 'D'}, {"low-detail", required_argument, 0, 'D'},
{"minimum-detail", required_argument, 0, 'm'}, {"minimum-detail", required_argument, 0, 'm'},
{"output", required_argument, 0, 'o'},
{"exclude", required_argument, 0, 'x'}, {"exclude", required_argument, 0, 'x'},
{"include", required_argument, 0, 'y'}, {"include", required_argument, 0, 'y'},
{"drop-rate", required_argument, 0, 'r'}, {"drop-rate", required_argument, 0, 'r'},
@@ -2553,6 +2554,8 @@ int main(int argc, char **argv) {
{"force-feature-limit", no_argument, &prevent[P_DYNAMIC_DROP], 1}, {"force-feature-limit", no_argument, &prevent[P_DYNAMIC_DROP], 1},
{"preseve-input-order", no_argument, &prevent[P_INPUT_ORDER], 1}, {"preseve-input-order", no_argument, &prevent[P_INPUT_ORDER], 1},
{"no-polygon-splitting", no_argument, &prevent[P_POLYGON_SPLIT], 1}, {"no-polygon-splitting", no_argument, &prevent[P_POLYGON_SPLIT], 1},
{"no-clipping", no_argument, &prevent[P_CLIPPING], 1},
{"no-duplication", no_argument, &prevent[P_DUPLICATION], 1},
{0, 0, 0, 0}, {0, 0, 0, 0},
}; };
@@ -2736,8 +2739,31 @@ int main(int argc, char **argv) {
read_parallel = 1; read_parallel = 1;
break; break;
default: default: {
fprintf(stderr, "Usage: %s -o out.mbtiles [-n name] [-l source] [-z maxzoom] [-Z minzoom] [-B basezoom] [-d detail] [-D lower-detail] [-m min-detail] [-x excluded-field ...] [-y included-field ...] [-X] [-r droprate] [-b buffer] [-t tmpdir] [-a rco] [-p sfkld] [-q] [-P] [file.json ...]\n", argv[0]); int width = 7 + strlen(argv[0]);
fprintf(stderr, "Usage: %s", argv[0]);
int i;
for (i = 0; long_options[i].name != NULL; i++) {
if (width + strlen(long_options[i].name) + 9 >= 80) {
fprintf(stderr, "\n ");
width = 8;
}
width += strlen(long_options[i].name) + 9;
if (strcmp(long_options[i].name, "output") == 0) {
fprintf(stderr, " --%s=output.mbtiles", long_options[i].name);
width += 9;
} else if (long_options[i].has_arg) {
fprintf(stderr, " [--%s=...]", long_options[i].name);
} else {
fprintf(stderr, " [--%s]", long_options[i].name);
}
}
if (width + 16 >= 80) {
fprintf(stderr, "\n ");
width = 8;
}
fprintf(stderr, " [file.json ...]");
}
exit(EXIT_FAILURE); exit(EXIT_FAILURE);
} }
} }
geometry.cc
+13 -2
View File
@@ -648,6 +648,15 @@ int quick_check(long long *bbox, int z, int detail, long long buffer) {
return 2; return 2;
} }
bool point_within_tile(long long x, long long y, int z, int detail, long long buffer) {
// No adjustment for buffer, because the point must be
// strictly within the tile to appear exactly once
long long area = 1LL << (32 - z);
return x >= 0 && y >= 0 && x < area && y < area;
}
drawvec clip_lines(drawvec &geom, int z, int detail, long long buffer) { drawvec clip_lines(drawvec &geom, int z, int detail, long long buffer) {
drawvec out; drawvec out;
@@ -800,7 +809,7 @@ drawvec impose_tile_boundaries(drawvec &geom, long long extent) {
return out; return out;
} }
drawvec simplify_lines(drawvec &geom, int z, int detail) { drawvec simplify_lines(drawvec &geom, int z, int detail, bool mark_tile_bounds) {
int res = 1 << (32 - detail - z); int res = 1 << (32 - detail - z);
long long area = 0xFFFFFFFF; long long area = 0xFFFFFFFF;
if (z != 0) { if (z != 0) {
@@ -817,7 +826,9 @@ drawvec simplify_lines(drawvec &geom, int z, int detail) {
} }
} }
geom = impose_tile_boundaries(geom, area); if (mark_tile_bounds) {
geom = impose_tile_boundaries(geom, area);
}
for (size_t i = 0; i < geom.size(); i++) { for (size_t i = 0; i < geom.size(); i++) {
if (geom[i].op == VT_MOVETO) { if (geom[i].op == VT_MOVETO) {
geometry.hh
+2 -1
View File
@@ -25,8 +25,9 @@ drawvec simple_clip_poly(drawvec &geom, int z, int detail, int buffer);
drawvec close_poly(drawvec &geom); drawvec close_poly(drawvec &geom);
drawvec reduce_tiny_poly(drawvec &geom, int z, int detail, bool *reduced, double *accum_area); drawvec reduce_tiny_poly(drawvec &geom, int z, int detail, bool *reduced, double *accum_area);
drawvec clip_lines(drawvec &geom, int z, int detail, long long buffer); drawvec clip_lines(drawvec &geom, int z, int detail, long long buffer);
bool point_within_tile(long long x, long long y, int z, int detail, long long buffer);
int quick_check(long long *bbox, int z, int detail, long long buffer); int quick_check(long long *bbox, int z, int detail, long long buffer);
drawvec simplify_lines(drawvec &geom, int z, int detail); drawvec simplify_lines(drawvec &geom, int z, int detail, bool mark_tile_bounds);
drawvec reorder_lines(drawvec &geom); drawvec reorder_lines(drawvec &geom);
drawvec fix_polygon(drawvec &geom); drawvec fix_polygon(drawvec &geom);
std::vector<drawvec> chop_polygon(std::vector<drawvec> &geoms); std::vector<drawvec> chop_polygon(std::vector<drawvec> &geoms);
man/tippecanoe.1
+4
View File
@@ -163,6 +163,10 @@ which may not be what you want.
.IP \(bu 2 .IP \(bu 2
\-pp or \-\-no\-polygon\-splitting: Don't split complex polygons (over 700 vertices after simplification) into multiple features. \-pp or \-\-no\-polygon\-splitting: Don't split complex polygons (over 700 vertices after simplification) into multiple features.
.IP \(bu 2 .IP \(bu 2
\-pc or \-\-no\-clipping: Don't clip features to the size of the tile. If a feature overlaps the tile's bounds or buffer at all, it is included completely. Be careful: this can produce very large tilesets, especially with large polygons.
.IP \(bu 2
\-pD or \-\-no\-duplication: As with \-\-no\-clipping, each feature is included intact instead of cut to tile boundaries. In addition, it is included only in a single tile per zoom level rather than potentially in multiple copies. Clients of the tileset must check adjacent tiles (possibly some distance away) to ensure they have all features.
.IP \(bu 2
\-q or \-\-quiet: Work quietly instead of reporting progress \-q or \-\-quiet: Work quietly instead of reporting progress
.RE .RE
.SH Example .SH Example
tests/curve/in.json
+4
View File
@@ -0,0 +1,4 @@
{"type":"FeatureCollection","features":[
{"type":"Feature","properties":{},"geometry":{"type":"Polygon","coordinates":[[[-99,83],[-117,71],[-118,26],[-97,-38],[-75,-66],[-33,-77],[93,-79],[145,-77],[145,-74],[90,-74],[-28,-73],[-63,-63],[-82,-33],[-103,32],[-106,70],[-82,82],[-99,83]]]}},
{"type":"Feature","properties":{},"geometry":{"type":"Polygon","coordinates":[[[109,83],[-101,83],[-139,74],[-139,-76],[-111,-82],[160,-82],[170,-80],[-92,-77],[-112,-75],[-119,71],[-88,80],[135,80],[109,83]]]}}
]}
tests/curve/out/-z2.json
+130
View File
@@ -0,0 +1,130 @@
{ "type": "FeatureCollection", "properties": {
"bounds": "-139.000000,-82.000000,170.000000,83.000000",
"center": "-135.000000,75.782195,2",
"description": "tests/curve/out/-z2.json.check.mbtiles",
"format": "pbf",
"json": "{\"vector_layers\": [ { \"id\": \"in\", \"description\": \"\", \"minzoom\": 0, \"maxzoom\": 2, \"fields\": {} } ] }",
"maxzoom": "2",
"minzoom": "0",
"name": "tests/curve/out/-z2.json.check.mbtiles",
"type": "overlay",
"version": "2"
}, "features": [
{ "type": "FeatureCollection", "properties": { "zoom": 0, "x": 0, "y": 0 }, "features": [
{ "type": "FeatureCollection", "properties": { "layer": "in" }, "features": [
{ "type": "Feature", "properties": { }, "geometry": { "type": "Polygon", "coordinates": [ [ [ -82.001953, 82.009169 ], [ -106.083984, 70.020587 ], [ -103.007812, 32.026706 ], [ -82.001953, -32.990236 ], [ -63.017578, -62.995158 ], [ -28.037109, -72.996909 ], [ 90.000000, -73.995328 ], [ 144.931641, -73.995328 ], [ 144.931641, -76.999935 ], [ 92.988281, -78.988187 ], [ -33.046875, -76.999935 ], [ -75.058594, -65.982270 ], [ -97.031250, -37.996163 ], [ -118.037109, 26.037042 ], [ -117.070312, 71.016960 ], [ -99.052734, 83.004844 ], [ -82.001953, 82.009169 ] ] ] } }
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{ "type": "Feature", "properties": { }, "geometry": { "type": "Polygon", "coordinates": [ [ [ 135.000000, 80.000984 ], [ -88.000488, 80.000984 ], [ -119.003906, 71.002660 ], [ -112.016602, -74.999254 ], [ -92.021484, -76.999935 ], [ 169.980469, -79.997168 ], [ 159.982910, -81.996942 ], [ -111.005859, -81.996942 ], [ -139.020996, -75.994839 ], [ -139.020996, 74.001385 ], [ -101.008301, 83.002167 ], [ 108.984375, 83.002167 ], [ 135.000000, 80.000984 ] ] ] } }
] }
] }
] }
tests/curve/out/-z2_--no-duplication.json
+36
View File
@@ -0,0 +1,36 @@
{ "type": "FeatureCollection", "properties": {
"bounds": "-139.000000,-82.000000,170.000000,83.000000",
"center": "45.000000,33.256630,2",
"description": "tests/curve/out/-z2_--no-duplication.json.check.mbtiles",
"format": "pbf",
"json": "{\"vector_layers\": [ { \"id\": \"in\", \"description\": \"\", \"minzoom\": 0, \"maxzoom\": 2, \"fields\": {} } ] }",
"maxzoom": "2",
"minzoom": "0",
"name": "tests/curve/out/-z2_--no-duplication.json.check.mbtiles",
"type": "overlay",
"version": "2"
}, "features": [
{ "type": "FeatureCollection", "properties": { "zoom": 0, "x": 0, "y": 0 }, "features": [
{ "type": "FeatureCollection", "properties": { "layer": "in" }, "features": [
{ "type": "Feature", "properties": { }, "geometry": { "type": "Polygon", "coordinates": [ [ [ -82.001953, 82.009169 ], [ -106.083984, 70.020587 ], [ -103.007812, 32.026706 ], [ -82.001953, -32.990236 ], [ -63.017578, -62.995158 ], [ -28.037109, -72.996909 ], [ 90.000000, -73.995328 ], [ 144.931641, -73.995328 ], [ 144.931641, -76.999935 ], [ 92.988281, -78.988187 ], [ -33.046875, -76.999935 ], [ -75.058594, -65.982270 ], [ -97.031250, -37.996163 ], [ -118.037109, 26.037042 ], [ -117.070312, 71.016960 ], [ -99.052734, 83.004844 ], [ -82.001953, 82.009169 ] ] ] } }
,
{ "type": "Feature", "properties": { }, "geometry": { "type": "Polygon", "coordinates": [ [ [ 135.000000, 80.012423 ], [ -88.066406, 80.012423 ], [ -119.003906, 71.016960 ], [ -112.060547, -74.982183 ], [ -92.021484, -76.999935 ], [ 169.980469, -79.997168 ], [ 159.960938, -81.996942 ], [ -111.005859, -81.996942 ], [ -139.042969, -75.994839 ], [ -139.042969, 74.019543 ], [ -101.074219, 83.004844 ], [ 108.984375, 83.004844 ], [ 135.000000, 80.012423 ] ] ] } }
] }
] }
,
{ "type": "FeatureCollection", "properties": { "zoom": 1, "x": 1, "y": 0 }, "features": [
{ "type": "FeatureCollection", "properties": { "layer": "in" }, "features": [
{ "type": "Feature", "properties": { }, "geometry": { "type": "Polygon", "coordinates": [ [ [ -82.001953, 82.003058 ], [ -106.040039, 70.005567 ], [ -103.007812, 32.026706 ], [ -82.001953, -32.990236 ], [ -63.017578, -62.995158 ], [ -28.037109, -72.996909 ], [ 90.000000, -73.995328 ], [ 144.975586, -73.995328 ], [ 144.975586, -76.999935 ], [ 92.988281, -78.996578 ], [ -33.002930, -76.999935 ], [ -75.014648, -65.982270 ], [ -97.031250, -37.996163 ], [ -118.037109, 26.037042 ], [ -117.026367, 71.002660 ], [ -99.008789, 83.004844 ], [ -82.001953, 82.003058 ] ] ] } }
,
{ "type": "Feature", "properties": { }, "geometry": { "type": "Polygon", "coordinates": [ [ [ 135.000000, 80.004799 ], [ -88.022461, 80.004799 ], [ -119.003906, 71.002660 ], [ -112.016602, -74.993566 ], [ -92.021484, -76.999935 ], [ 169.980469, -79.997168 ], [ 159.960938, -81.996942 ], [ -111.005859, -81.996942 ], [ -139.042969, -75.994839 ], [ -139.042969, 74.007440 ], [ -101.030273, 83.004844 ], [ 108.984375, 83.004844 ], [ 135.000000, 80.004799 ] ] ] } }
] }
] }
,
{ "type": "FeatureCollection", "properties": { "zoom": 2, "x": 2, "y": 1 }, "features": [
{ "type": "FeatureCollection", "properties": { "layer": "in" }, "features": [
{ "type": "Feature", "properties": { }, "geometry": { "type": "Polygon", "coordinates": [ [ [ -82.001953, 82.000000 ], [ -106.018066, 70.005567 ], [ -103.007812, 32.008076 ], [ -82.001953, -32.990236 ], [ -63.017578, -62.995158 ], [ -28.015137, -72.996909 ], [ 90.000000, -73.995328 ], [ 144.997559, -73.995328 ], [ 144.997559, -76.999935 ], [ 92.988281, -78.996578 ], [ -33.002930, -76.999935 ], [ -75.014648, -65.991212 ], [ -97.009277, -37.996163 ], [ -118.015137, 26.017298 ], [ -117.004395, 71.002660 ], [ -99.008789, 83.002167 ], [ -82.001953, 82.000000 ] ] ] } }
,
{ "type": "Feature", "properties": { }, "geometry": { "type": "Polygon", "coordinates": [ [ [ 135.000000, 80.000984 ], [ -88.000488, 80.000984 ], [ -119.003906, 71.002660 ], [ -112.016602, -74.999254 ], [ -92.021484, -76.999935 ], [ 169.980469, -79.997168 ], [ 159.982910, -81.996942 ], [ -111.005859, -81.996942 ], [ -139.020996, -75.994839 ], [ -139.020996, 74.001385 ], [ -101.008301, 83.002167 ], [ 108.984375, 83.002167 ], [ 135.000000, 80.000984 ] ] ] } }
] }
] }
] }
tests/ne_110m_admin_0_countries/out/-z4_-yname_-pD.json
+2148
View File
File diff suppressed because one or more lines are too long
tests/ne_110m_admin_0_countries/out/-z4_-yname_-pc.json
+4102
View File
File diff suppressed because one or more lines are too long
tile.cc
+35 -7
View File
@@ -510,7 +510,7 @@ void *partial_feature_worker(void *v) {
geom = remove_noop(geom, t, 32 - z - line_detail); geom = remove_noop(geom, t, 32 - z - line_detail);
} }
geom = simplify_lines(geom, z, line_detail); geom = simplify_lines(geom, z, line_detail, !(prevent[P_CLIPPING] || prevent[P_DUPLICATION]));
} }
} }
@@ -757,18 +757,45 @@ 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,
// so that we can know whether the feature itself, or only the feature's
// bounding box, touches the tile.
if (t == VT_LINE) { if (t == VT_LINE) {
geom = clip_lines(geom, z, line_detail, buffer); clipped = clip_lines(geom, z, line_detail, buffer);
} }
if (t == VT_POLYGON) { if (t == VT_POLYGON) {
geom = simple_clip_poly(geom, z, line_detail, buffer); clipped = simple_clip_poly(geom, z, line_detail, buffer);
} }
if (t == VT_POINT) { if (t == VT_POINT) {
geom = clip_point(geom, z, line_detail, buffer); clipped = clip_point(geom, z, line_detail, buffer);
} }
geom = remove_noop(geom, t, 0); clipped = remove_noop(clipped, t, 0);
// Must clip at z0 even if we don't want clipping, to handle features
// that are duplicated across the date line
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 {
// geom is unchanged
}
} else {
geom = clipped;
}
} }
if (geom.size() > 0) { if (geom.size() > 0) {
@@ -946,7 +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++) { for (size_t x = 0; x < features[j].size(); x++) {
if (features[j][x].coalesced && features[j][x].type == VT_LINE) { 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 = remove_noop(features[j][x].geom, features[j][x].type, 0);
features[j][x].geom = simplify_lines(features[j][x].geom, 32, 0); 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) { if (features[j][x].type == VT_POLYGON) {
tile.h
+4
View File
@@ -71,4 +71,8 @@ static int prevent_options[] = {
P_INPUT_ORDER, P_INPUT_ORDER,
#define P_POLYGON_SPLIT ((int) 'p') #define P_POLYGON_SPLIT ((int) 'p')
P_POLYGON_SPLIT, P_POLYGON_SPLIT,
#define P_CLIPPING ((int) 'c')
P_CLIPPING,
#define P_DUPLICATION ((int) 'D')
P_DUPLICATION,
}; };
version.h
+1 -1
View File
@@ -1 +1 @@
#define VERSION "tippecanoe v1.9.14\n" #define VERSION "tippecanoe v1.9.15\n"