Line data    Source code

       1             : /******************************************************************************
       2             :  *
       3             :  * Project:  FlatGeobuf driver
       4             :  * Purpose:  GeometryWriter class declarations.
       5             :  * Author:   Björn Harrtell <bjorn at wololo dot org>
       6             :  *
       7             :  ******************************************************************************
       8             :  * Copyright (c) 2018-2019, Björn Harrtell <bjorn at wololo dot org>
       9             :  *
      10             :  * Permission is hereby granted, free of charge, to any person obtaining a
      11             :  * copy of this software and associated documentation files (the "Software"),
      12             :  * to deal in the Software without restriction, including without limitation
      13             :  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
      14             :  * and/or sell copies of the Software, and to permit persons to whom the
      15             :  * Software is furnished to do so, subject to the following conditions:
      16             :  *
      17             :  * The above copyright notice and this permission notice shall be included
      18             :  * in all copies or substantial portions of the Software.
      19             :  *
      20             :  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
      21             :  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
      22             :  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
      23             :  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
      24             :  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
      25             :  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
      26             :  * DEALINGS IN THE SOFTWARE.
      27             :  ****************************************************************************/
      28             : 
      29             : #ifndef FLATGEOBUF_GEOMETRYWRITER_H_INCLUDED
      30             : #define FLATGEOBUF_GEOMETRYWRITER_H_INCLUDED
      31             : 
      32             : #include "ogrsf_frmts.h"
      33             : #include "ogr_p.h"
      34             : 
      35             : #include "feature_generated.h"
      36             : 
      37             : namespace ogr_flatgeobuf
      38             : {
      39             : 
      40             : class GeometryWriter
      41             : {
      42             :   private:
      43             :     flatbuffers::FlatBufferBuilder &m_fbb;
      44             :     const OGRGeometry *m_ogrGeometry;
      45             :     FlatGeobuf::GeometryType m_geometryType;
      46             :     const bool m_hasZ;
      47             :     const bool m_hasM;
      48             :     std::vector<double> m_xy;
      49             :     std::vector<double> m_z;
      50             :     std::vector<double> m_m;
      51             :     std::vector<uint32_t> m_ends;
      52             : 
      53             :     void writePoint(const OGRPoint *p);
      54             :     void writeMultiPoint(const OGRMultiPoint *mp);
      55             :     uint32_t writeSimpleCurve(const OGRSimpleCurve *sc);
      56             :     void writeMultiLineString(const OGRMultiLineString *mls);
      57             :     void writePolygon(const OGRPolygon *p);
      58             :     const flatbuffers::Offset<FlatGeobuf::Geometry>
      59             :     writeMultiPolygon(const OGRMultiPolygon *mp, int depth);
      60             :     const flatbuffers::Offset<FlatGeobuf::Geometry>
      61             :     writeGeometryCollection(const OGRGeometryCollection *gc, int depth);
      62             :     const flatbuffers::Offset<FlatGeobuf::Geometry>
      63             :     writeCompoundCurve(const OGRCompoundCurve *cc, int depth);
      64             :     const flatbuffers::Offset<FlatGeobuf::Geometry>
      65             :     writeCurvePolygon(const OGRCurvePolygon *cp, int depth);
      66             :     const flatbuffers::Offset<FlatGeobuf::Geometry>
      67             :     writePolyhedralSurface(const OGRPolyhedralSurface *p, int depth);
      68             :     void writeTIN(const OGRTriangulatedSurface *p);
      69             : 
      70             :     const flatbuffers::Offset<FlatGeobuf::Geometry>
      71          77 :     writePart(const OGRGeometry *part, int depth)
      72             :     {
      73         154 :         return GeometryWriter(m_fbb, part, m_hasZ, m_hasM).write(depth);
      74             :     }
      75             : 
      76             :     const flatbuffers::Offset<FlatGeobuf::Geometry>
      77          33 :     writePart(const OGRGeometry *part,
      78             :               const FlatGeobuf::GeometryType geometryType, int depth)
      79             :     {
      80          66 :         return GeometryWriter(m_fbb, part, geometryType, m_hasZ, m_hasM)
      81          66 :             .write(depth);
      82             :     }
      83             : 
      84             :   public:
      85         230 :     GeometryWriter(flatbuffers::FlatBufferBuilder &fbb,
      86             :                    const OGRGeometry *ogrGeometry,
      87             :                    const FlatGeobuf::GeometryType geometryType, const bool hasZ,
      88             :                    const bool hasM)
      89         230 :         : m_fbb(fbb), m_ogrGeometry(ogrGeometry), m_geometryType(geometryType),
      90         230 :           m_hasZ(hasZ), m_hasM(hasM)
      91             :     {
      92         230 :     }
      93             : 
      94          77 :     GeometryWriter(flatbuffers::FlatBufferBuilder &fbb,
      95             :                    const OGRGeometry *ogrGeometry, const bool hasZ,
      96             :                    const bool hasM)
      97          77 :         : m_fbb(fbb), m_ogrGeometry(ogrGeometry),
      98          77 :           m_geometryType(GeometryWriter::translateOGRwkbGeometryType(
      99          77 :               ogrGeometry->getGeometryType())),
     100         154 :           m_hasZ(hasZ), m_hasM(hasM)
     101             :     {
     102          77 :     }
     103             : 
     104             :     const flatbuffers::Offset<FlatGeobuf::Geometry> write(int depth);
     105             :     static FlatGeobuf::GeometryType
     106             :     translateOGRwkbGeometryType(const OGRwkbGeometryType eGType);
     107             : };
     108             : 
     109             : }  // namespace ogr_flatgeobuf
     110             : 
     111             : #endif /* ndef FLATGEOBUF_GEOMETRYWRITER_H_INCLUDED */