2022-10-08 17:16:13 -04:00

57 lines
2.2 KiB
C++

/******************************************************************************
* Project: libsidx - A C API wrapper around libspatialindex
* Purpose: Declarations to support stream loading via C API
* Author: Howard Butler, hobu.inc@gmail.com
******************************************************************************
* Copyright (c) 2009, Howard Butler
*
* All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
******************************************************************************/
#pragma once
#include "sidx_export.h"
class SIDX_DLL DataStream : public SpatialIndex::IDataStream
{
public:
DataStream(int (*readNext)(SpatialIndex::id_type* id, double **pMin, double **pMax, uint32_t *nDimension, const uint8_t **pData, uint32_t *nDataLength));
~DataStream();
SpatialIndex::IData* getNext();
bool hasNext();
uint32_t size();
void rewind();
protected:
SpatialIndex::RTree::Data* m_pNext;
SpatialIndex::id_type m_id;
private:
int (*iterfunct)(SpatialIndex::id_type *id, double **pMin, double **pMax, uint32_t *nDimension, const uint8_t **pData, uint32_t *nDataLength);
bool readData();
bool m_bDoneReading;
};