#include <iostream>
#include <string>
#include <sstream>
#include <fstream>
#include <vector>
#include <GeographicLib/Geodesic.hpp>
#include <GeographicLib/DMS.hpp>
#include <GeographicLib/Utility.hpp>
#include <GeographicLib/Intersect.hpp>
#include "IntersectTool.usage"
using namespace GeographicLib;
typedef Math::real real;
int main(int argc, const char* const argv[]) {
try {
enum { CLOSE = 0, OFFSET, NEXT, SEGMENT };
Utility::set_digits();
real
a = Constants::WGS84_a(),
f = Constants::WGS84_f(),
maxdist = -1;
bool exact = false, check = false, longfirst = false;
int prec = 3, mode = CLOSE;
std::string istring, ifile, ofile, cdelim;
char lsep = ';';
for (int m = 1; m < argc; ++m) {
std::string arg(argv[m]);
if (arg == "-e") {
if (m + 2 >= argc) return usage(1, true);
try {
a = Utility::val<real>(std::string(argv[m + 1]));
f = Utility::fract<real>(std::string(argv[m + 2]));
}
catch (const std::exception& e) {
std::cerr << "Error decoding arguments of -e: " << e.what() << "\n";
return 1;
}
m += 2;
} else if (arg == "-E")
exact = true;
else if (arg == "-p") {
if (++m == argc) return usage(1, true);
try {
prec = Utility::val<int>(std::string(argv[m]));
}
catch (const std::exception&) {
std::cerr << "Precision " << argv[m] << " is not a number\n";
return 1;
}
} else if (arg == "-R") {
if (++m == argc) return usage(1, true);
try {
maxdist = Utility::val<real>(std::string(argv[m]));
}
catch (const std::exception&) {
std::cerr << "Maxdist " << argv[m] << " is not a number\n";
return 1;
}
if (!(maxdist >= 0)) {
std::cerr << "Maxdist must be nonnegative\n";
return 1;
}
} else if (arg == "-c")
mode = CLOSE;
else if (arg == "-o")
mode = OFFSET;
else if (arg == "-n")
mode = NEXT;
else if (arg == "-i")
mode = SEGMENT;
else if (arg == "-C")
check = true;
else if (arg == "-w")
longfirst = true;
else if (arg == "--input-string") {
if (++m == argc) return usage(1, true);
istring = argv[m];
} else if (arg == "--input-file") {
if (++m == argc) return usage(1, true);
ifile = argv[m];
} else if (arg == "--output-file") {
if (++m == argc) return usage(1, true);
ofile = argv[m];
} else if (arg == "--line-separator") {
if (++m == argc) return usage(1, true);
if (std::string(argv[m]).size() != 1) {
std::cerr << "Line separator must be a single character\n";
return 1;
}
lsep = argv[m][0];
} else if (arg == "--comment-delimiter") {
if (++m == argc) return usage(1, true);
cdelim = argv[m];
} else if (arg == "--version") {
std::cout << argv[0] << ": GeographicLib version "
<< GEOGRAPHICLIB_VERSION_STRING << "\n";
return 0;
} else
return usage(!(arg == "-h" || arg == "--help"), arg != "--help");
}
if (!ifile.empty() && !istring.empty()) {
std::cerr << "Cannot specify --input-string and --input-file together\n";
return 1;
}
if (ifile == "-") ifile.clear();
std::ifstream infile;
std::istringstream instring;
if (!ifile.empty()) {
infile.open(ifile.c_str());
if (!infile.is_open()) {
std::cerr << "Cannot open " << ifile << " for reading\n";
return 1;
}
} else if (!istring.empty()) {
std::string::size_type m = 0;
while (true) {
m = istring.find(lsep, m);
if (m == std::string::npos)
break;
istring[m] = '\n';
}
instring.str(istring);
}
std::istream* input = !ifile.empty() ? &infile :
(!istring.empty() ? &instring : &std::cin);
std::ofstream outfile;
if (ofile == "-") ofile.clear();
if (!ofile.empty()) {
outfile.open(ofile.c_str());
if (!outfile.is_open()) {
std::cerr << "Cannot open " << ofile << " for writing\n";
return 1;
}
}
std::ostream* output = !ofile.empty() ? &outfile : &std::cout;
Geodesic geod(a, f, exact);
Intersect intersect(geod);
real latX1, lonX1, aziX, latY1, lonY1, aziY, latX2, lonX2, latY2, lonY2,
x0 = 0, y0 = 0, x, y;
std::string inp[8], s, sc, eol;
std::istringstream str;
int retval = 0,
ninp = mode == CLOSE ? 6 : (mode == NEXT ? 4 :
8); GeodesicLine lineX, lineY;
unsigned caps = Intersect::LineCaps;
while (std::getline(*input, s)) {
try {
eol = "\n";
if (!cdelim.empty()) {
std::string::size_type m = s.find(cdelim);
if (m != std::string::npos) {
eol = " " + s.substr(m) + "\n";
s = s.substr(0, m);
}
}
str.clear(); str.str(s);
for (int i = 0; i < ninp; ++i) {
if (!(str >> inp[i]))
throw GeographicErr("Incomplete input: " + s);
}
if (str >> sc)
throw GeographicErr("Extraneous input: " + sc);
if (mode == CLOSE || mode == OFFSET) {
DMS::DecodeLatLon(inp[0], inp[1], latX1, lonX1, longfirst);
aziX = DMS::DecodeAzimuth(inp[2]);
DMS::DecodeLatLon(inp[3], inp[4], latY1, lonY1, longfirst);
aziY = DMS::DecodeAzimuth(inp[5]);
if (mode == OFFSET) {
x0 = Utility::val<real>(inp[6]);
y0 = Utility::val<real>(inp[7]);
} else
x0 = y0 = 0;
lineX = geod.Line(latX1, lonX1, aziX, caps);
lineY = geod.Line(latY1, lonY1, aziY, caps);
} else if (mode == NEXT) {
DMS::DecodeLatLon(inp[0], inp[1], latX1, lonX1, longfirst);
aziX = DMS::DecodeAzimuth(inp[2]);
aziY = DMS::DecodeAzimuth(inp[3]);
lineX = geod.Line(latX1, lonX1, aziX, caps);
lineY = geod.Line(latX1, lonX1, aziY, caps);
} else { DMS::DecodeLatLon(inp[0], inp[1], latX1, lonX1, longfirst);
DMS::DecodeLatLon(inp[2], inp[3], latX2, lonX2, longfirst);
DMS::DecodeLatLon(inp[4], inp[5], latY1, lonY1, longfirst);
DMS::DecodeLatLon(inp[6], inp[7], latY2, lonY2, longfirst);
lineX = geod.InverseLine(latX1, lonX1, latX2, lonX2,
Intersect::LineCaps);
lineY = geod.InverseLine(latY1, lonY1, latY2, lonY2,
Intersect::LineCaps);
x0 = lineX.Distance()/2;
y0 = lineY.Distance()/2;
}
std::pair<real, real> p0(x0, y0);
if (maxdist < 0) {
int segmode = 0, c;
auto p = mode == CLOSE || mode == OFFSET ?
intersect.Closest(lineX, lineY, p0, &c) :
mode == NEXT ? intersect.Next(lineX, lineY, &c) :
intersect.Segment(lineX, lineY, segmode, &c);
x = p.first; y = p.second;
*output << Utility::str(x, prec) << " "
<< Utility::str(y, prec) << " " << c;
if (mode == SEGMENT)
*output << " " << segmode;
*output << eol;
if (check) {
lineX.Position(x, latX2, lonX2);
lineY.Position(y, latY2, lonY2);
real sXY;
geod.Inverse(latX2, lonX2, latY2, lonY2, sXY);
std::cerr << Utility::str(longfirst ? lonX2 : latX2, prec+5) << " "
<< Utility::str(longfirst ? latX2 : lonX2, prec+5) << " "
<< Utility::str(longfirst ? lonY2 : latY2, prec+5) << " "
<< Utility::str(longfirst ? latY2 : lonY2, prec+5) << " "
<< Utility::str(sXY, prec) << eol;
}
} else {
std::vector<int> c;
auto v = intersect.All(lineX, lineY, maxdist, c, p0);
unsigned n = unsigned(v.size());
for (unsigned i = 0; i < n; ++i) {
x = v[i].first; y = v[i].second;
*output << Utility::str(x, prec) << " " << Utility::str(y, prec)
<< " " << c[i] << " "
<< Utility::str(Intersect::Dist(v[i], p0), prec)
<< eol;
if (check) {
lineX.Position(x, latX2, lonX2);
lineY.Position(y, latY2, lonY2);
real sXY;
geod.Inverse(latX2, lonX2, latY2, lonY2, sXY);
std::cerr << Utility::str(longfirst ? lonX2 : latX2, prec+5) << " "
<< Utility::str(longfirst ? latX2 : lonX2, prec+5) << " "
<< Utility::str(longfirst ? lonY2 : latY2, prec+5) << " "
<< Utility::str(longfirst ? latY2 : lonY2, prec+5) << " "
<< Utility::str(sXY, prec) << eol;
}
}
*output << "nan nan 0 nan" << eol;
if (check)
std::cerr << "nan nan nan nan nan" << eol;
}
}
catch (const std::exception& e) {
*output << "ERROR: " << e.what() << "\n";
retval = 1;
}
}
return retval;
}
catch (const std::exception& e) {
std::cerr << "Caught exception: " << e.what() << "\n";
return 1;
}
catch (...) {
std::cerr << "Caught unknown exception\n";
return 1;
}
}