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163 lines
5.4 KiB
163 lines
5.4 KiB
6 years ago
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/******************************************************************************
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* Copyright (c) 1999, Carl Anderson
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*
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* This code is based in part on the earlier work of Frank Warmerdam
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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******************************************************************************
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* shpgeo.h
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*
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* support for geometric and other additions to shapelib
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*
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*
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* $Log: shpgeo.h,v $
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* Revision 1.4 2016-12-05 12:44:07 erouault
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* * Major overhaul of Makefile build system to use autoconf/automake.
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*
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* * Warning fixes in contrib/
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*
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* Revision 1.3 2002-01-15 14:36:56 warmerda
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* upgrade to use proj_api.h
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*
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* Revision 1.2 1999/05/26 02:56:31 candrsn
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* updates to shpdxf, dbfinfo, port from Shapelib 1.1.5 of dbfcat and shpinfo
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*
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*
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*/
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/* I'm using some shorthand throughout this file
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* R+ is a Clockwise Ring and is the positive portion of an object
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* R- is a CounterClockwise Ring and is a hole in a R+
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* A complex object is one having at least one R-
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* A compound object is one having more than one R+
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* A simple object has one and only one element (R+ or R-)
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*
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* The closed ring constraint is for polygons and assumed here
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* Arcs or LineStrings I am calling Rings (generically open or closed)
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* Point types are vertices or lists of vertices but not Rings
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*
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* SHPT_POLYGON, SHPT_POLYGONZ, SHPT_POLYGONM and SHPT_MULTIPATCH
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* can have SHPObjects that are compound as well as complex
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*
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* SHP_POINT and its Z and M derivatives are strictly simple
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* MULTI_POINT, SHPT_ARC and their derivatives may be simple or compound
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*
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*/
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#ifndef SHPGEO_H
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#define SHPGEO_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifdef PROJ4
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#include "proj_api.h"
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#else
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typedef void* projPJ;
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#endif
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#define SHPD_POINT 1
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#define SHPD_LINE 2
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#define SHPD_AREA 4
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#define SHPD_Z 8
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#define SHPD_MEASURE 16
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/* move these into a ogis header file ogis.h */
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#define OGIST_UNKNOWN 0
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#define OGIST_POINT 1
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#define OGIST_LINESTRING 2
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#define OGIST_POLYGON 3
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#define OGIST_MULTIPOINT 4
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#define OGIST_MULTILINE 5
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#define OGIST_MULTIPOLYGON 6
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#define OGIST_GEOMCOLL 7
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typedef struct { int StreamPos;
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int NeedSwap;
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char *wStream;
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} WKBStreamObj;
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typedef struct { double x; double y; } PT;
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typedef struct { int cParts;
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SHPObject *SHPObj;
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} SHPObjectList;
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#define LSB_ORDER (int) 1
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extern char * asFileName ( const char *fil, char *ext );
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extern int SHPProject ( SHPObject *psCShape,
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projPJ inproj, projPJ outproj );
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extern projPJ SHPSetProjection ( int param_cnt, char **params );
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extern int SHPFreeProjection ( projPJ p);
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extern int SHPDimension ( int SHPType );
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extern double SHPArea_2d ( SHPObject *psCShape );
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extern int SHPRingDir_2d ( SHPObject *psCShape, int Ring );
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extern double SHPLength_2d ( SHPObject *psCShape );
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extern PT SHPCentrd_2d ( SHPObject *psCShape );
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extern PT SHPPointinPoly_2d ( SHPObject *psCShape );
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extern PT* SHPPointsinPoly_2d ( SHPObject *psCShape );
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extern int RingCentroid_2d ( int nVertices, double *a, double *b, PT *C,
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double *Area );
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extern double RingLength_2d ( int nVertices, double *a, double *b );
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extern int RingDir_2d ( int nVertices, double *a, double *b );
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extern double RingArea_2d ( int nVertices, double *a, double *b );
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extern SHPObject* SHPClone ( SHPObject *psCShape, int lowPart, int highPart );
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extern SHPObject* SHPUnCompound ( SHPObject *psCShape, int * ringNumber );
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extern SHPObject* SHPIntersect_2d ( SHPObject* a, SHPObject* b );
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extern int SHPWriteOGisWKB ( WKBStreamObj *stream_obj, SHPObject *psCShape );
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extern SHPObject* SHPReadOGisWKB ( WKBStreamObj *stream_obj );
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int SHPWriteOGisPolygon ( WKBStreamObj *stream_obj, SHPObject *psCShape );
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int SHPWriteOGisLine ( WKBStreamObj *stream_obj, SHPObject *psCShape );
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int SHPWriteOGisPoint ( WKBStreamObj *stream_obj, SHPObject *psCShape );
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SHPObject* SHPReadOGisPolygon ( WKBStreamObj *stream_obj );
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SHPObject* SHPReadOGisLine ( WKBStreamObj *stream_obj );
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SHPObject* SHPReadOGisPoint ( WKBStreamObj *stream_obj );
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extern int SHPClean ( SHPObject *psCShape );
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extern int SHPOGisType ( int GeomType, int toOGis);
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void swapD (void *so, unsigned char *in, long bytes);
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void swapW (void *so, unsigned char *in, long bytes);
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void SwapG( void *so, void *in, int this_cnt, int this_size );
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#ifdef __cplusplus
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}
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#endif
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#endif /* ndef SHPGEO_H */
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