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/******************************************************************************
* $Id: shprewind.c,v 1.5 2016-12-05 12:44:05 erouault Exp $
*
* Project: Shapelib
* Purpose: Utility to validate and reset the winding order of rings in
* polygon geometries to match the ordering required by spec.
* Author: Frank Warmerdam, warmerdam@pobox.com
*
******************************************************************************
* Copyright (c) 2002, Frank Warmerdam
*
* This software is available under the following "MIT Style" license,
* or at the option of the licensee under the LGPL (see COPYING). This
* option is discussed in more detail in shapelib.html.
*
* --
*
* 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.
******************************************************************************
*
* $Log: shprewind.c,v $
* Revision 1.5 2016-12-05 12:44:05 erouault
* * Major overhaul of Makefile build system to use autoconf/automake.
*
* * Warning fixes in contrib/
*
* Revision 1.4 2004-09-26 20:09:35 fwarmerdam
* avoid rcsid warnings
*
* Revision 1.3 2004/01/09 16:39:49 fwarmerdam
* include standard include files
*
* Revision 1.2 2002/04/10 17:23:11 warmerda
* copy from source to destination now
*
* Revision 1.1 2002/04/10 16:56:36 warmerda
* New
*
*/
#include <string.h>
#include <stdlib.h>
#include "shapefil.h"
int main( int argc, char ** argv )
{
SHPHandle hSHP, hSHPOut;
int nShapeType, nEntities, i, nInvalidCount=0;
double adfMinBound[4], adfMaxBound[4];
/* -------------------------------------------------------------------- */
/* Display a usage message. */
/* -------------------------------------------------------------------- */
if( argc != 3 )
{
printf( "shprewind in_shp_file out_shp_file\n" );
exit( 1 );
}
/* -------------------------------------------------------------------- */
/* Open the passed shapefile. */
/* -------------------------------------------------------------------- */
hSHP = SHPOpen( argv[1], "rb" );
if( hSHP == NULL )
{
printf( "Unable to open:%s\n", argv[1] );
exit( 1 );
}
SHPGetInfo( hSHP, &nEntities, &nShapeType, adfMinBound, adfMaxBound );
/* -------------------------------------------------------------------- */
/* Create output shapefile. */
/* -------------------------------------------------------------------- */
hSHPOut = SHPCreate( argv[2], nShapeType );
if( hSHPOut == NULL )
{
printf( "Unable to create:%s\n", argv[2] );
exit( 1 );
}
/* -------------------------------------------------------------------- */
/* Skim over the list of shapes, printing all the vertices. */
/* -------------------------------------------------------------------- */
for( i = 0; i < nEntities; i++ )
{
SHPObject *psShape;
psShape = SHPReadObject( hSHP, i );
if( SHPRewindObject( hSHP, psShape ) )
nInvalidCount++;
SHPWriteObject( hSHPOut, -1, psShape );
SHPDestroyObject( psShape );
}
SHPClose( hSHP );
SHPClose( hSHPOut );
printf( "%d objects rewound.\n", nInvalidCount );
exit( 0 );
}