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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
/**
* @class vtkGeoJSONFeature
* @brief Represents GeoJSON feature geometry & properties
*
* This class is used by the vtkGeoJSONReader when parsing GeoJSON input.
* It is not intended to be instantiated by applications directly.
*/
#ifndef vtkGeoJSONFeature_h
#define vtkGeoJSONFeature_h
// VTK Includes
#include "vtkDataObject.h"
#include "vtkIOGeoJSONModule.h" // For export macro
#include "vtk_jsoncpp.h" // For json parser
VTK_ABI_NAMESPACE_BEGIN
class vtkPolyData;
// Currently implemented geoJSON compatible Geometries
#define GeoJSON_POINT "Point"
#define GeoJSON_MULTI_POINT "MultiPoint"
#define GeoJSON_LINE_STRING "LineString"
#define GeoJSON_MULTI_LINE_STRING "MultiLineString"
#define GeoJSON_POLYGON "Polygon"
#define GeoJSON_MULTI_POLYGON "MultiPolygon"
#define GeoJSON_GEOMETRY_COLLECTION "GeometryCollection"
class VTKIOGEOJSON_EXPORT vtkGeoJSONFeature : public vtkDataObject
{
public:
static vtkGeoJSONFeature* New();
void PrintSelf(ostream& os, vtkIndent indent) override;
vtkTypeMacro(vtkGeoJSONFeature, vtkDataObject);
/**
* Returns `VTK_GEO_JSON_FEATURE`.
*/
int GetDataObjectType() override { return VTK_GEO_JSON_FEATURE; }
///@{
/**
* Set/get option to generate the border outlining each polygon,
* so that resulting cells are vtkPolyLine instead of vtkPolygon.
* The default is off
*/
vtkSetMacro(OutlinePolygons, bool);
vtkGetMacro(OutlinePolygons, bool);
vtkBooleanMacro(OutlinePolygons, bool);
///@}
/**
* Extract the geometry corresponding to the geoJSON feature stored at root
* Assign any feature properties passed as cell data
*/
void ExtractGeoJSONFeature(const Json::Value& root, vtkPolyData* outputData);
protected:
vtkGeoJSONFeature();
~vtkGeoJSONFeature() override;
/**
* Json::Value featureRoot corresponds to the root of the geoJSON feature
* from which the geometry and properties are to be extracted
*/
Json::Value featureRoot;
/**
* Id of current GeoJSON feature being parsed
*/
char* FeatureId;
/**
* Set/get option to generate the border outlining each polygon,
* so that the output cells are polyine data.
*/
bool OutlinePolygons;
/**
* Extract geoJSON geometry into vtkPolyData *
*/
void ExtractGeoJSONFeatureGeometry(const Json::Value& root, vtkPolyData* outputData);
///@{
/**
* In extractXXXX() Extract geoJSON geometries XXXX into outputData
*/
vtkPolyData* ExtractPoint(const Json::Value& coordinates, vtkPolyData* outputData);
vtkPolyData* ExtractLineString(const Json::Value& coordinates, vtkPolyData* outputData);
vtkPolyData* ExtractPolygon(const Json::Value& coordinates, vtkPolyData* outputData);
///@}
///@{
/**
* extractMultiXXXX extracts an array of geometries XXXX into the outputData
*/
vtkPolyData* ExtractMultiPoint(const Json::Value& coordinates, vtkPolyData* outputData);
vtkPolyData* ExtractMultiLineString(const Json::Value& coordinates, vtkPolyData* outputData);
vtkPolyData* ExtractMultiPolygon(const Json::Value& coordinates, vtkPolyData* outputData);
///@}
///@{
/**
* Check if the root contains corresponding appropriate geometry in the
* Jsoncpp root
*/
bool IsPoint(const Json::Value& root);
bool IsMultiPoint(const Json::Value& root);
bool IsLineString(const Json::Value& root); // To Do.
bool IsMultiLineString(const Json::Value& root); // To Do.
bool IsPolygon(const Json::Value& root); // To Do.
bool IsMultiPolygon(const Json::Value& root); // To Do.
///@}
/**
* Point[] from its JSON equivalent
*/
bool CreatePoint(const Json::Value& coordinates, double point[3]);
void InsertFeatureProperties(vtkPolyData* outputData);
private:
vtkGeoJSONFeature(const vtkGeoJSONFeature&) = delete;
void operator=(const vtkGeoJSONFeature&) = delete;
};
VTK_ABI_NAMESPACE_END
#endif // vtkGeoJSONFeature_h
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