GDAL
ogr_geo_utils.h
1 /******************************************************************************
2  * $Id: ogr_geo_utils.h 38736 2017-05-31 21:29:09Z rouault $
3  *
4  * Project: X-Plane aeronautical data reader
5  * Purpose: Definition of geo-computation functions
6  * Author: Even Rouault, even dot rouault at mines dash paris dot org
7  *
8  ******************************************************************************
9  * Copyright (c) 2008, Even Rouault <even dot rouault at mines-paris dot org>
10  *
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18  * The above copyright notice and this permission notice shall be included
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28  ****************************************************************************/
29 
30 #ifndef OGR_GEO_UTILS_H_INCLUDED
31 #define OGR_GEO_UTILS_H_INCLUDED
32 
42 double OGR_GreatCircle_Distance(double dfLatA_deg, double dfLonA_deg,
43  double dfLatB_deg, double dfLonB_deg);
44 
45 double OGR_GreatCircle_InitialHeading(double dfLatA_deg, double dfLonA_deg,
46  double dfLatB_deg, double dfLonB_deg);
47 
48 /* such as ExtendPosition(A, Distance(A,B), InitialHeading(A,B)) ~= B */
49 int OGR_GreatCircle_ExtendPosition(double dfLatA_deg, double dfLonA_deg,
50  double dfDistance, double dfHeadingInA,
51  double* pdfLatB_deg, double* pdfLonB_deg);
52 
53 #endif /* ndef OGR_GEO_UTILS_H_INCLUDED */

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