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/******************************************************************************
* Copyright (c) 1999, Carl Anderson
*
* this code is based in part on the earlier work of Frank Warmerdam
*
* 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.
******************************************************************************
*
* shpdata.c - utility program for testing elements of the libraries
*/
#include <stdio.h>
#include <stdlib.h>
#include "shapefil.h"
#include "shpgeo.h"
int main(int argc, char **argv)
{
if (argc < 2)
{
printf("shpdata shp_file \n");
return 1;
}
DBFHandle old_DBF = DBFOpen(argv[1], "rb");
if (old_DBF == NULL)
{
printf("Unable to open old DBF file:%s\n", argv[1]);
return 1;
}
SHPHandle old_SHP = SHPOpen(argv[1], "rb");
if (old_SHP == NULL)
{
printf("Unable to open old shape files:%s\n", argv[1]);
DBFClose(old_DBF);
return 1;
}
int nEntities;
int nShapeType;
SHPGetInfo(old_SHP, &nEntities, &nShapeType, NULL, NULL);
int byRing = 1;
PT ringCentrd;
for (int i = 0; i < nEntities; i++)
{
SHPObject *psCShape = SHPReadObject(old_SHP, i);
if (byRing == 1)
{
// const int prevStart = psCShape->nVertices;
for (int ring = (psCShape->nParts - 1); ring >= 0; ring--)
{
const int rStart = psCShape->panPartStart[ring];
int numVtx;
if (ring == (psCShape->nParts - 1))
{
numVtx = psCShape->nVertices - rStart;
}
else
{
numVtx = psCShape->panPartStart[ring + 1] - rStart;
}
printf("(shpdata) Ring(%d) (%d for %d) \n", ring, rStart,
numVtx);
SHPObject *psO = SHPClone(psCShape, ring, ring + 1);
const int ringDir = SHPRingDir_2d(psO, 0);
double ringArea = RingArea_2d(
psO->nVertices, (double *)psO->padfX, (double *)psO->padfY);
RingCentroid_2d(psO->nVertices, (double *)psO->padfX,
(double *)psO->padfY, &ringCentrd, &ringArea);
printf("(shpdata) Ring %d, %f Area %d dir \n", ring, ringArea,
ringDir);
SHPDestroyObject(psO);
printf("(shpdata) End Ring \n");
} /* (ring) [0,nParts */
} /* by ring */
const double oArea = SHPArea_2d(psCShape);
const double oLen = SHPLength_2d(psCShape);
const PT oCentrd = SHPCentrd_2d(psCShape);
printf("(shpdata) Part (%d) %f Area %f length, C (%f,%f)\n", i, oArea,
oLen, oCentrd.x, oCentrd.y);
}
DBFClose(old_DBF);
SHPClose(old_SHP);
printf("\n");
return EXIT_SUCCESS;
}
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