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MapLibreParticleLab/test/api/query.test.cpp

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#include <mbgl/test/map_adapter.hpp>
#include <mbgl/map/map_options.hpp>
#include <mbgl/test/stub_file_source.hpp>
#include <mbgl/test/util.hpp>
#include <mbgl/util/image.hpp>
#include <mbgl/util/io.hpp>
#include <mbgl/util/run_loop.hpp>
#include <mbgl/style/layers/symbol_layer.hpp>
#include <mbgl/style/style.hpp>
#include <mbgl/style/image.hpp>
#include <mbgl/style/source.hpp>
#include <mbgl/style/sources/geojson_source.hpp>
#include <mbgl/style/expression/dsl.hpp>
#include <mbgl/renderer/renderer.hpp>
#include <mbgl/gfx/headless_frontend.hpp>
using namespace mbgl;
using namespace mbgl::style;
using namespace mbgl::style::expression;
using namespace std::literals;
namespace {
class QueryTest {
public:
QueryTest() {
map.getStyle().loadJSON(util::read_file("test/fixtures/api/query_style.json"));
map.getStyle().addImage(std::make_unique<style::Image>("test-icon",
decodeImage(util::read_file("test/fixtures/sprites/default_marker.png")), 1.0));
frontend.render(map);
}
util::RunLoop loop;
std::shared_ptr<StubFileSource> fileSource = std::make_shared<StubFileSource>();
HeadlessFrontend frontend { 1 };
MapAdapter map { frontend, MapObserver::nullObserver(), fileSource,
MapOptions().withMapMode(MapMode::Static).withSize(frontend.getSize())};
};
std::vector<Feature> getTopClusterFeature(QueryTest& test) {
test.fileSource->sourceResponse = [&] (const Resource& resource) {
EXPECT_EQ("http://url"s, resource.url);
Response response;
response.data = std::make_unique<std::string>(util::read_file("test/fixtures/supercluster/places.json"s));
return response;
};
LatLng coordinate{0, 0};
Mutable<GeoJSONOptions> options = makeMutable<GeoJSONOptions>();
options->cluster = true;
auto source = std::make_unique<GeoJSONSource>("cluster_source"s, std::move(options));
source->setURL("http://url"s);
source->loadDescription(*test.fileSource);
auto clusterLayer = std::make_unique<SymbolLayer>("cluster_layer"s, "cluster_source"s);
clusterLayer->setIconImage({"test-icon"s});
clusterLayer->setIconSize(12.0f);
test.map.jumpTo(CameraOptions().withCenter(coordinate).withZoom(0.0));
test.map.getStyle().addSource(std::move(source));
test.map.getStyle().addLayer(std::move(clusterLayer));
test.loop.runOnce();
test.frontend.render(test.map);
auto screenCoordinate = test.map.pixelForLatLng(coordinate);
const RenderedQueryOptions queryOptions({{{ "cluster_layer"s}}, {}});
return test.frontend.getRenderer()->queryRenderedFeatures(screenCoordinate,
queryOptions);
}
} // end namespace
TEST(Query, QueryRenderedFeatures) {
QueryTest test;
// Batch conversion of latLngs to pixels
auto points = test.map.pixelsForLatLngs({{0, 0}, {9, 9}});
ASSERT_EQ(2, points.size());
// Single conversion of latLng to pixel
auto point0 = test.map.pixelForLatLng({0, 0});
ASSERT_NEAR(points[0].x, point0.x, 1e-8);
ASSERT_NEAR(points[0].y, point0.y, 1e-8);
auto point1 = test.map.pixelForLatLng({9, 9});
ASSERT_NEAR(points[1].x, point1.x, 1e-8);
ASSERT_NEAR(points[1].y, point1.y, 1e-8);
auto features1 = test.frontend.getRenderer()->queryRenderedFeatures(point0);
EXPECT_EQ(features1.size(), 4u);
auto features2 = test.frontend.getRenderer()->queryRenderedFeatures(point1);
EXPECT_EQ(features2.size(), 0u);
}
TEST(Query, QueryRenderedFeaturesFilterLayer) {
QueryTest test;
auto zz = test.map.pixelForLatLng({ 0, 0 });
auto features1 = test.frontend.getRenderer()->queryRenderedFeatures(zz, {{{ "layer1"}}, {}});
EXPECT_EQ(features1.size(), 1u);
auto features2 = test.frontend.getRenderer()->queryRenderedFeatures(zz, {{{ "layer1", "layer2" }}, {}});
EXPECT_EQ(features2.size(), 2u);
auto features3 = test.frontend.getRenderer()->queryRenderedFeatures(zz, {{{ "foobar" }}, {}});
EXPECT_EQ(features3.size(), 0u);
auto features4 = test.frontend.getRenderer()->queryRenderedFeatures(zz, {{{ "foobar", "layer3" }}, {}});
EXPECT_EQ(features4.size(), 1u);
}
TEST(Query, QueryRenderedFeaturesFilter) {
using namespace mbgl::style::expression::dsl;
QueryTest test;
auto zz = test.map.pixelForLatLng({ 0, 0 });
const Filter eqFilter(eq(get("key1"), literal("value1")));
auto features1 = test.frontend.getRenderer()->queryRenderedFeatures(zz, {{}, { eqFilter }});
EXPECT_EQ(features1.size(), 1u);
const Filter idNotEqFilter(ne(id(), literal("feature1")));
auto features2 = test.frontend.getRenderer()->queryRenderedFeatures(zz, {{{ "layer4" }}, { idNotEqFilter }});
EXPECT_EQ(features2.size(), 0u);
const Filter gtFilter(gt(number(get("key2")), literal(1.0)));
auto features3 = test.frontend.getRenderer()->queryRenderedFeatures(zz, {{ }, { gtFilter }});
EXPECT_EQ(features3.size(), 1u);
}
TEST(Query, QuerySourceFeatures) {
QueryTest test;
auto features1 = test.frontend.getRenderer()->querySourceFeatures("source3");
EXPECT_EQ(features1.size(), 1u);
}
TEST(Query, QuerySourceFeatureStates) {
QueryTest test;
FeatureState newState;
newState["hover"] = true;
newState["radius"].set<uint64_t>(20);
test.frontend.getRenderer()->setFeatureState("source1", {}, "feature1", newState);
FeatureState states;
test.frontend.getRenderer()->getFeatureState(states, "source1", {}, "feature1");
ASSERT_EQ(states.size(), 2u);
ASSERT_EQ(states["hover"], true);
ASSERT_EQ(states["radius"].get<uint64_t>(), 20u);
ASSERT_EQ(newState, states);
}
TEST(Query, QuerySourceFeaturesOptionValidation) {
QueryTest test;
// GeoJSONSource, doesn't require a layer id
auto features = test.frontend.getRenderer()->querySourceFeatures("source3");
ASSERT_EQ(features.size(), 1u);
// VectorSource, requires a layer id
features = test.frontend.getRenderer()->querySourceFeatures("source5");
ASSERT_EQ(features.size(), 0u);
// RasterSource, not supported
features = test.frontend.getRenderer()->querySourceFeatures("source6");
ASSERT_EQ(features.size(), 0u);
}
TEST(Query, QuerySourceFeaturesFilter) {
using namespace mbgl::style::expression::dsl;
QueryTest test;
const Filter eqFilter(eq(get("key1"), literal("value1")));
auto features1 = test.frontend.getRenderer()->querySourceFeatures("source4", {{}, { eqFilter }});
EXPECT_EQ(features1.size(), 1u);
const Filter idNotEqFilter(ne(id(), literal("feature1")));
auto features2 = test.frontend.getRenderer()->querySourceFeatures("source4", {{}, { idNotEqFilter }});
EXPECT_EQ(features2.size(), 0u);
const Filter gtFilter(gt(number(get("key2")), literal(1.0)));
auto features3 = test.frontend.getRenderer()->querySourceFeatures("source4", {{}, { gtFilter }});
EXPECT_EQ(features3.size(), 1u);
}
TEST(Query, QueryFeatureExtensionsInvalidExtension) {
QueryTest test;
auto unknownExt = test.frontend.getRenderer()->queryFeatureExtensions("source4"s,
{},
"unknown"s,
"children"s);
auto unknownValue = unknownExt.get<mbgl::Value>();
EXPECT_TRUE(unknownValue.is<NullValue>());
}
TEST(Query, QueryFeatureExtensionsSuperclusterChildren) {
QueryTest test;
auto topClusterFeature = getTopClusterFeature(test);
EXPECT_EQ(topClusterFeature.size(), 1u);
const auto featureProps = topClusterFeature[0].properties;
auto clusterId = featureProps.find("cluster_id"s);
auto cluster = featureProps.find("cluster"s);
EXPECT_TRUE(clusterId != featureProps.end());
EXPECT_TRUE(cluster != featureProps.end());
auto queryChildren = test.frontend.getRenderer()->queryFeatureExtensions("cluster_source"s,
topClusterFeature[0],
"supercluster"s,
"children"s);
EXPECT_TRUE(queryChildren.is<FeatureCollection>());
auto children = queryChildren.get<FeatureCollection>();
EXPECT_EQ(children.size(), 4u);
// Compare results produced by supercluster with default clustering options.
EXPECT_EQ(children[0].properties["cluster_id"].get<uint64_t>(), 2u);
EXPECT_EQ(children[1].properties["cluster_id"].get<uint64_t>(), 34u);
EXPECT_EQ(children[2].properties["cluster_id"].get<uint64_t>(), 258u);
EXPECT_EQ(children[3].properties["cluster_id"].get<uint64_t>(), 2466u);
EXPECT_EQ(children[0].properties["point_count"].get<uint64_t>(), 7u);
EXPECT_EQ(children[1].properties["point_count"].get<uint64_t>(), 16u);
EXPECT_EQ(children[2].properties["point_count"].get<uint64_t>(), 7u);
EXPECT_EQ(children[3].properties["point_count"].get<uint64_t>(), 2u);
}
TEST(Query, QueryFeatureExtensionsSuperclusterExpansionZoom) {
QueryTest test;
auto topClusterFeature = getTopClusterFeature(test);
EXPECT_EQ(topClusterFeature.size(), 1u);
auto queryChildren = test.frontend.getRenderer()->queryFeatureExtensions("cluster_source"s,
topClusterFeature[0],
"supercluster"s,
"children"s);
auto children = queryChildren.get<FeatureCollection>();
auto queryExpansionZoom1 = test.frontend.getRenderer()->queryFeatureExtensions("cluster_source"s,
topClusterFeature[0],
"supercluster"s,
"expansion-zoom"s);
auto queryExpansionZoom2 = test.frontend.getRenderer()->queryFeatureExtensions("cluster_source"s,
children[3],
"supercluster"s,
"expansion-zoom"s);
auto zoomValue1 = queryExpansionZoom1.get<mbgl::Value>();
auto zoomValue2 = queryExpansionZoom2.get<mbgl::Value>();
EXPECT_TRUE(zoomValue1.is<uint64_t>());
EXPECT_TRUE(zoomValue2.is<uint64_t>());
EXPECT_EQ(zoomValue1.get<uint64_t>(), 1u);
EXPECT_EQ(zoomValue2.get<uint64_t>(), 3u);
}
TEST(Query, QueryFeatureExtensionsSuperclusterLeaves) {
QueryTest test;
auto topClusterFeature = getTopClusterFeature(test);
EXPECT_EQ(topClusterFeature.size(), 1u);
// Get leaves for cluster 1, with default limit 10, offset 0.
auto queryClusterLeaves = test.frontend.getRenderer()->queryFeatureExtensions("cluster_source"s,
topClusterFeature[0],
"supercluster"s,
"leaves"s);
EXPECT_TRUE(queryClusterLeaves.is<FeatureCollection>());
auto leaves = queryClusterLeaves.get<FeatureCollection>();
EXPECT_EQ(leaves.size(), 10u);
// Get leaves for cluster 1, with limit 3, offset 0.
const std::map<std::string, mbgl::Value> limitOpts = { {"limit"s, static_cast<uint64_t>(3u)} };
auto queryClusterLeavesLimit3 = test.frontend.getRenderer()->queryFeatureExtensions("cluster_source"s,
topClusterFeature[0],
"supercluster"s,
"leaves"s,
limitOpts);
auto limitLeaves3 = queryClusterLeavesLimit3.get<FeatureCollection>();
EXPECT_EQ(limitLeaves3.size(), 3u);
EXPECT_EQ(limitLeaves3[0].properties["name"].get<std::string>(), "Niagara Falls"s);
EXPECT_EQ(limitLeaves3[1].properties["name"].get<std::string>(), "Cape May"s);
EXPECT_EQ(limitLeaves3[2].properties["name"].get<std::string>(), "Cape Fear"s);
// Get leaves for cluster 1, with limit 3, offset 3.
const std::map<std::string, mbgl::Value> offsetOpts = { {"limit"s, static_cast<uint64_t>(3u)},
{"offset"s, static_cast<uint64_t>(3u)} };
auto queryClusterLeavesOffset3 = test.frontend.getRenderer()->queryFeatureExtensions("cluster_source"s,
topClusterFeature[0],
"supercluster"s,
"leaves"s,
offsetOpts);
auto offsetLeaves3 = queryClusterLeavesOffset3.get<FeatureCollection>();
EXPECT_EQ(offsetLeaves3.size(), 3u);
EXPECT_EQ(offsetLeaves3[0].properties["name"].get<std::string>(), "Cape Hatteras"s);
EXPECT_EQ(offsetLeaves3[1].properties["name"].get<std::string>(), "Cape Sable"s);
EXPECT_EQ(offsetLeaves3[2].properties["name"].get<std::string>(), "Cape Cod"s);
}
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