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#include "parser.h"
#include "printer.h"
#include "polynomial.h"
#include "division.h"
#include "lp.h"
#include "gfanapplication.h"
#include "polyhedralcone.h"
#include "polyhedralfan.h"
#include "symmetry.h"
#include "polymakefile.h"
class IsConnectedApplication : public GFanApplication
{
StringOption inputOption;
SimpleOption optionSymmetry;
public:
bool includeInDefaultInstallation()
{
return false;
}
const char *helpText()
{
return "This program checks if a PURE d-dimensional fan is connected in codimension one (in the sense of [Bogart, Jensen, Speyer, Sturmfels, Thomas]).\n";
}
IsConnectedApplication():
inputOption("-i","Specify the name of the input file.","polymake.out"),
optionSymmetry("--symmetry",
"Reads in the cone stored with symmetry. The generators of the symmetry group are given on the input. IF SYMMETRY IS SPECIFIED THEN "
"THE CHECK IS NOT COMPLETE AND IT WILL ONLY BE CHECKED IF THAT GIVEN"
"TWO CONES THAT EXIST ELEMENTS IN THE TWO RESPECTIVE ORBITS"
"WHICH ARE CONNECTED BY A RIDGE PATH\n")
{
registerOptions();
}
const char *name()
{
return "_isconnected";
}
int main()
{
PolyhedralFan f=PolyhedralFan::readFan(inputOption.getValue(),true,0,0,0,true);
int n=f.getAmbientDimension();
SymmetryGroup s(n);
if(optionSymmetry.getValue())
{
IntegerVectorList generators=FileParser(Stdin).parseIntegerVectorList();
s.computeClosure(generators);
}
cout << f.isConnected(&s) << endl;
return 0;
}
};
static IsConnectedApplication theApplication;
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