38 lines
1.1 KiB
C++
38 lines
1.1 KiB
C++
#pragma once
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#include <mbgl/style/conversion.hpp>
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#include <mbgl/util/geo.hpp>
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namespace mbgl {
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namespace style {
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namespace conversion {
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template<>
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struct Converter<LatLng> {
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public:
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template <class V>
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optional<LatLng> operator() (const V& value, Error& error) const {
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if (!isArray(value) || arrayLength(value) < 2 ) {
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error = { "coordinate array must contain numeric longitude and latitude values" };
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return {};
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}
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//Style spec uses GeoJSON convention for specifying coordinates
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optional<double> latitude = toDouble(arrayMember(value, 1));
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optional<double> longitude = toDouble(arrayMember(value, 0));
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if (!latitude || !longitude) {
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error = { "coordinate array must contain numeric longitude and latitude values" };
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return {};
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}
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if (*latitude < -90 || *latitude > 90 ){
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error = { "coordinate latitude must be between -90 and 90" };
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return {};
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}
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return LatLng(*latitude, *longitude);
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}
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};
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} // namespace conversion
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} // namespace style
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} // namespace mbgl
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