GeoJsonObjectTypes.h

#pragma once
 
#include <CesiumGeometry/AxisAlignedBox.h>
#include <CesiumUtility/JsonValue.h>
#include <CesiumVectorData/Library.h>
#include <CesiumVectorData/VectorStyle.h>
 
#include <glm/vec3.hpp>
 
#include <memory>
#include <variant>
#include <vector>
 
namespace CesiumVectorData {

enum class GeoJsonObjectType : uint8_t {
  Point = 0,
  MultiPoint = 1,
  LineString = 2,
  MultiLineString = 3,
  Polygon = 4,
  MultiPolygon = 5,
  GeometryCollection = 6,
  Feature = 7,
  FeatureCollection = 8
};

std::string_view geoJsonObjectTypeToString(GeoJsonObjectType type);

struct GeoJsonPoint {
  static constexpr GeoJsonObjectType TYPE = GeoJsonObjectType::Point;

  glm::dvec3 coordinates;

  std::optional<CesiumGeometry::AxisAlignedBox> boundingBox = std::nullopt;

  CesiumUtility::JsonValue::Object foreignMembers =
      CesiumUtility::JsonValue::Object();

  std::optional<VectorStyle> style = std::nullopt;
};

struct GeoJsonMultiPoint {
  static constexpr GeoJsonObjectType TYPE = GeoJsonObjectType::MultiPoint;

  std::vector<glm::dvec3> coordinates;

  std::optional<CesiumGeometry::AxisAlignedBox> boundingBox = std::nullopt;

  CesiumUtility::JsonValue::Object foreignMembers =
      CesiumUtility::JsonValue::Object();

  std::optional<VectorStyle> style = std::nullopt;
};

struct GeoJsonLineString {
  static constexpr GeoJsonObjectType TYPE = GeoJsonObjectType::LineString;

  std::vector<glm::dvec3> coordinates;

  std::optional<CesiumGeometry::AxisAlignedBox> boundingBox = std::nullopt;

  CesiumUtility::JsonValue::Object foreignMembers =
      CesiumUtility::JsonValue::Object();

  std::optional<VectorStyle> style = std::nullopt;
};

struct GeoJsonMultiLineString {
  static constexpr GeoJsonObjectType TYPE = GeoJsonObjectType::MultiLineString;

  std::vector<std::vector<glm::dvec3>> coordinates;

  std::optional<CesiumGeometry::AxisAlignedBox> boundingBox = std::nullopt;

  CesiumUtility::JsonValue::Object foreignMembers =
      CesiumUtility::JsonValue::Object();

  std::optional<VectorStyle> style = std::nullopt;
};

struct GeoJsonPolygon {
  static constexpr GeoJsonObjectType TYPE = GeoJsonObjectType::Polygon;

  std::vector<std::vector<glm::dvec3>> coordinates;

  std::optional<CesiumGeometry::AxisAlignedBox> boundingBox = std::nullopt;

  CesiumUtility::JsonValue::Object foreignMembers =
      CesiumUtility::JsonValue::Object();

  std::optional<VectorStyle> style = std::nullopt;
};

struct GeoJsonMultiPolygon {
  static constexpr GeoJsonObjectType TYPE = GeoJsonObjectType::MultiPolygon;

  std::vector<std::vector<std::vector<glm::dvec3>>> coordinates;

  std::optional<CesiumGeometry::AxisAlignedBox> boundingBox = std::nullopt;

  CesiumUtility::JsonValue::Object foreignMembers =
      CesiumUtility::JsonValue::Object();

  std::optional<VectorStyle> style = std::nullopt;
};
 
struct GeoJsonObject;

struct GeoJsonGeometryCollection {
  static constexpr GeoJsonObjectType TYPE =
      GeoJsonObjectType::GeometryCollection;

  std::vector<GeoJsonObject> geometries;

  std::optional<CesiumGeometry::AxisAlignedBox> boundingBox = std::nullopt;

  CesiumUtility::JsonValue::Object foreignMembers =
      CesiumUtility::JsonValue::Object();

  std::optional<VectorStyle> style = std::nullopt;
};

struct GeoJsonFeature {
  GeoJsonFeature() = default;
  GeoJsonFeature(GeoJsonFeature&& rhs) noexcept = default;
  GeoJsonFeature(const GeoJsonFeature& rhs);
  GeoJsonFeature(
      std::variant<std::monostate, std::string, int64_t>&& id,
      std::unique_ptr<GeoJsonObject>&& geometry,
      std::optional<CesiumUtility::JsonValue::Object>&& properties,
      std::optional<CesiumGeometry::AxisAlignedBox>&& boundingBox,
      CesiumUtility::JsonValue::Object&& foreignMembers);
  GeoJsonFeature& operator=(const GeoJsonFeature& rhs);
  GeoJsonFeature& operator=(GeoJsonFeature&& rhs) noexcept = default;

  static constexpr GeoJsonObjectType TYPE = GeoJsonObjectType::Feature;

  std::variant<std::monostate, std::string, int64_t> id = std::monostate();

  std::unique_ptr<GeoJsonObject> geometry;

  std::optional<CesiumUtility::JsonValue::Object> properties;

  std::optional<CesiumGeometry::AxisAlignedBox> boundingBox = std::nullopt;

  CesiumUtility::JsonValue::Object foreignMembers =
      CesiumUtility::JsonValue::Object();

  std::optional<VectorStyle> style = std::nullopt;
};

struct GeoJsonFeatureCollection {
  static constexpr GeoJsonObjectType TYPE =
      GeoJsonObjectType::FeatureCollection;

  std::vector<GeoJsonObject> features;

  std::optional<CesiumGeometry::AxisAlignedBox> boundingBox = std::nullopt;

  CesiumUtility::JsonValue::Object foreignMembers =
      CesiumUtility::JsonValue::Object();

  std::optional<VectorStyle> style = std::nullopt;
};

using GeoJsonObjectVariant = std::variant<
    GeoJsonPoint,
    GeoJsonMultiPoint,
    GeoJsonLineString,
    GeoJsonMultiLineString,
    GeoJsonPolygon,
    GeoJsonMultiPolygon,
    GeoJsonGeometryCollection,
    GeoJsonFeature,
    GeoJsonFeatureCollection>;
} // namespace CesiumVectorData