ADD: new track message, Entity class and Position class
This commit is contained in:
Henry Winkel
248
libs/geographiclib/tools/Planimeter.cpp
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248
libs/geographiclib/tools/Planimeter.cpp
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/**
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* \file Planimeter.cpp
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* \brief Command line utility for measuring the area of geodesic polygons
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*
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* Copyright (c) Charles Karney (2010-2022) <charles@karney.com> and licensed
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* under the MIT/X11 License. For more information, see
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* https://geographiclib.sourceforge.io/
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*
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* See the <a href="Planimeter.1.html">man page</a> for usage information.
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**********************************************************************/
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#include <iostream>
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#include <string>
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#include <sstream>
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#include <fstream>
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#include <GeographicLib/PolygonArea.hpp>
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#include <GeographicLib/DMS.hpp>
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#include <GeographicLib/Utility.hpp>
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#include <GeographicLib/GeoCoords.hpp>
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#include <GeographicLib/Ellipsoid.hpp>
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#if defined(_MSC_VER)
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// Squelch warnings about constant conditional expressions
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# pragma warning (disable: 4127)
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#endif
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#include "Planimeter.usage"
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int main(int argc, const char* const argv[]) {
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try {
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using namespace GeographicLib;
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typedef Math::real real;
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Utility::set_digits();
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enum { GEODESIC, EXACT, AUTHALIC, RHUMB };
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real
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a = Constants::WGS84_a(),
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f = Constants::WGS84_f();
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bool reverse = false, sign = true, polyline = false, longfirst = false,
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geoconvert_compat = false;
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int linetype = GEODESIC;
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int prec = 6;
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std::string istring, ifile, ofile, cdelim;
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char lsep = ';';
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for (int m = 1; m < argc; ++m) {
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std::string arg(argv[m]);
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if (arg == "-r")
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reverse = !reverse;
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else if (arg == "-s")
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sign = !sign;
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else if (arg == "-l")
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polyline = !polyline;
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else if (arg == "-e") {
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if (m + 2 >= argc) return usage(1, true);
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try {
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a = Utility::val<real>(std::string(argv[m + 1]));
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f = Utility::fract<real>(std::string(argv[m + 2]));
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}
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catch (const std::exception& e) {
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std::cerr << "Error decoding arguments of -e: " << e.what() << "\n";
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return 1;
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}
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m += 2;
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} else if (arg == "-w")
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longfirst = !longfirst;
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else if (arg == "-p") {
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if (++m == argc) return usage(1, true);
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try {
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prec = Utility::val<int>(std::string(argv[m]));
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}
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catch (const std::exception&) {
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std::cerr << "Precision " << argv[m] << " is not a number\n";
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return 1;
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}
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} else if (arg == "-G")
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linetype = GEODESIC;
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else if (arg == "-E")
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linetype = EXACT;
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else if (arg == "-Q")
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linetype = AUTHALIC;
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else if (arg == "-R")
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linetype = RHUMB;
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else if (arg == "--geoconvert-input")
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geoconvert_compat = true;
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else if (arg == "--input-string") {
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if (++m == argc) return usage(1, true);
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istring = argv[m];
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} else if (arg == "--input-file") {
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if (++m == argc) return usage(1, true);
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ifile = argv[m];
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} else if (arg == "--output-file") {
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if (++m == argc) return usage(1, true);
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ofile = argv[m];
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} else if (arg == "--line-separator") {
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if (++m == argc) return usage(1, true);
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if (std::string(argv[m]).size() != 1) {
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std::cerr << "Line separator must be a single character\n";
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return 1;
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}
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lsep = argv[m][0];
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} else if (arg == "--comment-delimiter") {
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if (++m == argc) return usage(1, true);
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cdelim = argv[m];
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} else if (arg == "--version") {
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std::cout << argv[0] << ": GeographicLib version "
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<< GEOGRAPHICLIB_VERSION_STRING << "\n";
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return 0;
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} else
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return usage(!(arg == "-h" || arg == "--help"), arg != "--help");
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}
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if (!ifile.empty() && !istring.empty()) {
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std::cerr << "Cannot specify --input-string and --input-file together\n";
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return 1;
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}
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if (ifile == "-") ifile.clear();
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std::ifstream infile;
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std::istringstream instring;
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if (!ifile.empty()) {
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infile.open(ifile.c_str());
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if (!infile.is_open()) {
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std::cerr << "Cannot open " << ifile << " for reading\n";
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return 1;
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}
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} else if (!istring.empty()) {
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std::string::size_type m = 0;
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while (true) {
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m = istring.find(lsep, m);
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if (m == std::string::npos)
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break;
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istring[m] = '\n';
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}
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instring.str(istring);
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}
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std::istream* input = !ifile.empty() ? &infile :
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(!istring.empty() ? &instring : &std::cin);
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std::ofstream outfile;
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if (ofile == "-") ofile.clear();
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if (!ofile.empty()) {
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outfile.open(ofile.c_str());
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if (!outfile.is_open()) {
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std::cerr << "Cannot open " << ofile << " for writing\n";
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return 1;
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}
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}
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std::ostream* output = !ofile.empty() ? &outfile : &std::cout;
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const Ellipsoid ellip(a, f);
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if (linetype == AUTHALIC) {
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using std::sqrt;
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a = sqrt(ellip.Area() / (4 * Math::pi()));
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f = 0;
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}
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const Geodesic geod(a, f);
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const GeodesicExact geode(a, f);
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const Rhumb rhumb(a, f);
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PolygonArea poly(geod, polyline);
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PolygonAreaExact polye(geode, polyline);
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PolygonAreaRhumb polyr(rhumb, polyline);
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GeoCoords p;
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// Max precision = 10: 0.1 nm in distance, 10^-15 deg (= 0.11 nm),
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// 10^-11 sec (= 0.3 nm).
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prec = std::min(10 + Math::extra_digits(), std::max(0, prec));
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std::string s, eol("\n");
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real perimeter, area;
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unsigned num;
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std::istringstream str;
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std::string slat, slon, junk;
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real lat = 0, lon = 0;
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while (std::getline(*input, s)) {
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if (!cdelim.empty()) {
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std::string::size_type m = s.find(cdelim);
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if (m != std::string::npos) {
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eol = " " + s.substr(m) + "\n";
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s = s.substr(0, m);
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}
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}
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bool endpoly = s.empty();
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if (!endpoly) {
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try {
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using std::isnan;
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if (geoconvert_compat) {
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p.Reset(s, true, longfirst);
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lat = p.Latitude(); lon = p.Longitude();
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} else {
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str.clear(); str.str(s);
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if (!(str >> slat >> slon))
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throw GeographicErr("incomplete input");
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if (str >> junk)
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throw GeographicErr("extra input");
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DMS::DecodeLatLon(slat, slon, lat, lon, longfirst);
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}
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if (isnan(lat) || isnan(lon))
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endpoly = true;
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}
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catch (const GeographicErr&) {
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endpoly = true;
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}
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}
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if (endpoly) {
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num =
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linetype == EXACT ? polye.Compute(reverse, sign, perimeter, area) :
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linetype == RHUMB ? polyr.Compute(reverse, sign, perimeter, area) :
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poly.Compute(reverse, sign, perimeter, area); // geodesic + authalic
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if (num > 0) {
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*output << num << " " << Utility::str(perimeter, prec);
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if (!polyline) {
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*output << " " << Utility::str(area, std::max(0, prec - 5));
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}
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*output << eol;
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}
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linetype == EXACT ? polye.Clear() :
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linetype == RHUMB ? polyr.Clear() : poly.Clear();
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eol = "\n";
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} else {
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linetype == EXACT ? polye.AddPoint(lat, lon) :
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linetype == RHUMB ? polyr.AddPoint(lat, lon) :
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poly.AddPoint(linetype == AUTHALIC ? ellip.AuthalicLatitude(lat) :
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lat, lon);
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}
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}
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num =
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linetype == EXACT ? polye.Compute(reverse, sign, perimeter, area) :
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linetype == RHUMB ? polyr.Compute(reverse, sign, perimeter, area) :
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poly.Compute(reverse, sign, perimeter, area);
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if (num > 0) {
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*output << num << " " << Utility::str(perimeter, prec);
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if (!polyline) {
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*output << " " << Utility::str(area, std::max(0, prec - 5));
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}
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*output << eol;
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}
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linetype == EXACT ? polye.Clear() :
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linetype == RHUMB ? polyr.Clear() : poly.Clear();
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eol = "\n";
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return 0;
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}
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catch (const std::exception& e) {
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std::cerr << "Caught exception: " << e.what() << "\n";
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return 1;
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}
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catch (...) {
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std::cerr << "Caught unknown exception\n";
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return 1;
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}
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}
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