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parse geometry collections from the pbfs; iterate geometries in buckets

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This commit is contained in:
Justin R. Miller
2015-03-06 17:47:14 -08:00
committed by John Firebaugh
parent 685aa01043
commit 405137700b
9 changed files with 302 additions and 296 deletions
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43
src/mbgl/map/vector_tile.cpp
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@@ -43,47 +43,50 @@ VectorTileFeature::VectorTileFeature(pbf feature_pbf, const util::ptr<GeometryTi
}
}
Geometry VectorTileFeature::nextGeometry() {
GeometryCollection VectorTileFeature::nextGeometry() {
GeometryCollection result;
pbf current_geometry_pbf = geometry_pbf.message();
PBFGeometry current_geometry(current_geometry_pbf);
int32_t x, y;
Geometry result;
result.set<std::false_type>();
if (multigeometry || geometry_pbf.next(4)) {
while (geometry_pbf.next(4)) { // geometry
if (type == GeometryFeatureType::Point) {
current_geometry.next(x, y);
GeometryPoint point(x, y);
result.set<GeometryPoint>(point);
result.emplace_back(GeometryPoint(x, y));
} else if (type == GeometryFeatureType::LineString) {
GeometryLine line;
PBFGeometry::command cmd;
while ((cmd = current_geometry.next(x, y)) != PBFGeometry::end) {
if (cmd == PBFGeometry::move_to) {
multigeometry = true;
result.set<GeometryLine>(line);
break;
} else {
line.emplace_back(x, y);
if (!line.empty()) {
result.push_back(line);
line.clear();
}
}
line.emplace_back(x, y);
}
if (!multigeometry) {
result.set<GeometryLine>(line);
if (line.size()) {
result.push_back(line);
}
} else if (type == GeometryFeatureType::Polygon) {
GeometryPolygon polygon;
GeometryLine line;
PBFGeometry::command cmd;
while ((cmd = current_geometry.next(x, y)) != PBFGeometry::end) {
if (cmd == PBFGeometry::move_to) {
multigeometry = true;
result.set<GeometryPolygon>(polygon);
break;
} else {
// polygon.emplace_back(x, y);
if (line.size()) {
result.push_back(line);
line.clear();
}
}
line.emplace_back(x, y);
}
if (!multigeometry) {
result.set<GeometryPolygon>(polygon);
if (line.size()) {
result.push_back(line);
line.clear();
}
} else {
throw std::runtime_error("unrecognized geometry type");