blob: bb03bcc2e59a16933de67eb7b14c5624f25b5302 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
|
#include <mbgl/style/expression/expression.hpp>
#include <mbgl/style/expression/compound_expression.hpp>
#include <mbgl/tile/geometry_tile_data.hpp>
namespace mbgl {
namespace style {
namespace expression {
class GeoJSONFeature : public GeometryTileFeature {
public:
const Feature& feature;
GeoJSONFeature(const Feature& feature_) : feature(feature_) {}
FeatureType getType() const override {
return apply_visitor(ToFeatureType(), feature.geometry);
}
const PropertyMap& getProperties() const override { return feature.properties; }
FeatureIdentifier getID() const override { return feature.id; }
GeometryCollection getGeometries() const override { return {}; }
optional<mbgl::Value> getValue(const std::string& key) const override {
auto it = feature.properties.find(key);
if (it != feature.properties.end()) {
return optional<mbgl::Value>(it->second);
}
return optional<mbgl::Value>();
}
};
EvaluationResult Expression::evaluate(optional<float> zoom, const Feature& feature, optional<double> colorRampParameter) const {
GeoJSONFeature f(feature);
return this->evaluate(EvaluationContext(zoom, &f, colorRampParameter));
}
} // namespace expression
} // namespace style
} // namespace mbgl
|
