GeoJsonDocument.h

#pragma once
 
#include <CesiumAsync/AsyncSystem.h>
#include <CesiumAsync/Future.h>
#include <CesiumAsync/IAssetAccessor.h>
#include <CesiumUtility/IntrusivePointer.h>
#include <CesiumUtility/JsonValue.h>
#include <CesiumUtility/ReferenceCounted.h>
#include <CesiumUtility/Result.h>
#include <CesiumVectorData/GeoJsonObject.h>
#include <CesiumVectorData/Library.h>
 
#include <glm/ext/vector_double3.hpp>
 
#include <memory>
#include <span>
 
namespace CesiumVectorData {

struct VectorDocumentAttribution {
  std::string html;
  bool showOnScreen;
};

class CESIUMVECTORDATA_API GeoJsonDocument {
public:
  static CesiumUtility::Result<GeoJsonDocument> fromGeoJson(
      const std::span<const std::byte>& bytes,
      std::vector<VectorDocumentAttribution>&& attributions = {});

  static CesiumUtility::Result<GeoJsonDocument> fromGeoJson(
      const rapidjson::Document& document,
      std::vector<VectorDocumentAttribution>&& attributions = {});

  static CesiumAsync::Future<CesiumUtility::Result<GeoJsonDocument>>
  fromCesiumIonAsset(
      const CesiumAsync::AsyncSystem& asyncSystem,
      const std::shared_ptr<CesiumAsync::IAssetAccessor>& pAssetAccessor,
      int64_t ionAssetID,
      const std::string& ionAccessToken,
      const std::string& ionAssetEndpointUrl = "https://api.cesium.com/");

  static CesiumAsync::Future<CesiumUtility::Result<GeoJsonDocument>> fromUrl(
      const CesiumAsync::AsyncSystem& asyncSystem,
      const std::shared_ptr<CesiumAsync::IAssetAccessor>& pAssetAccessor,
      const std::string& url,
      const std::vector<CesiumAsync::IAssetAccessor::THeader>& headers = {});

  GeoJsonDocument(
      GeoJsonObject&& rootObject,
      std::vector<VectorDocumentAttribution>&& attributions);
 
  GeoJsonDocument() = default;

  GeoJsonObject rootObject = GeoJsonObject{GeoJsonPoint{glm::dvec3(0, 0, 0)}};

  std::vector<VectorDocumentAttribution> attributions;
 
private:
  static CesiumUtility::Result<GeoJsonObject>
  parseGeoJson(const rapidjson::Document& doc);
  static CesiumUtility::Result<GeoJsonObject>
  parseGeoJson(const std::span<const std::byte>& bytes);
};
} // namespace CesiumVectorData