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/*
* app_fancoarsening.cpp
*
* Created on: Jul 19, 2010
* Author: anders
*/
#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"
#include "traverser_sphere.h"
class FanCoarseningApplication : public GFanApplication
{
StringOption inputOption;
// SimpleOption resultantOption;
multimap<IntegerVector,int> coneIndicesAtRidge;
vector<PolyhedralCone> F1,F2;
public:
bool includeInDefaultInstallation()
{
return false;
}
IntegerVectorList inequalitiesForCone(IntegerVector const &codim1interior, IntegerVector const &newDirection)
{
int i=0;
}
const char *helpText()
{
return "This program reads in a codimension-one fan (with support equal to the codimension-1 skeleton of the normal fan of a polytope) and constructs the normal fan of the polytope.\n";
}
FanCoarseningApplication():
inputOption("-i","Specify the name of the input file.","polymake.out")
// resultantOption("--resultant","Take codim 1 skeleton and wipe out bad cones.")
{
registerOptions();
}
const char *name()
{
return "_fancoarsening";
}
/* bool zeroOrTwo(int v)
{
return (v==0) || (v==2);
}*/
class MyTarget : public SymmetricTarget
{
list<IntegerVector> normals;
bool process(ConeTraverser &traverser)
{
SphereTraverser *t=dynamic_cast<SphereTraverser*> (&traverser);
normals.push_back(t->currentNormal);
return true;
}
public:
PolyhedralCone toCone()
{
PolyhedralCone c(normals,IntegerVectorList(),normals.begin()->size());
c.canonicalize();
return c;
}
};
class MyTraverser: public ConeTraverser
{
int currentConeIndex;
vector<PolyhedralCone> const &cones;
map<IntegerVector,list<int> > adjacency;
PolyhedralCone theCone;
//void updatePolyhedralCone();
void moveToCone(IntegerVector const &v, IntegerVector const &normal)
{
SphereTraverser traverser(cones,adjacency,v,normal);
MyTarget myTarget;
SymmetryGroup s(normal.size());
symmetricTraverse(traverser,myTarget);
theCone=myTarget.toCone();
}
public:
// IntegerVector currentNormal;
MyTraverser(vector<PolyhedralCone> const &cones_, map<IntegerVector,list<int> > const &adjacency_, IntegerVector const &v, IntegerVector const &normal):
ConeTraverser(normal.size()),
cones(cones_),
adjacency(adjacency_)
{
moveToCone(v,normal);
}
virtual void changeCone(IntegerVector const &ridgeVector, IntegerVector const &rayVector)
{
moveToCone(ridgeVector,rayVector);
}
virtual IntegerVectorList link(IntegerVector const &ridgeVector)
{
IntegerVector v=theCone.link(ridgeVector).getUniquePoint();
IntegerVectorList ret;
ret.push_back(v);
ret.push_back(-v);
return ret;
}
PolyhedralCone & refToPolyhedralCone()
{
return theCone;
}
};
int main()
{
PolyhedralFan f1=PolyhedralFan::readFan(inputOption.getValue(),true,0,0,0);
AsciiPrinter P(Stdout);
for(PolyhedralFan::coneIterator i=f1.conesBegin();i!=f1.conesEnd();i++)F1.push_back(*i);
map<IntegerVector,list<int> > adjacency;
for(int i=0;i<F1.size();i++)
{
PolyhedralFan temp(F1[i].ambientDimension());
temp.insert(F1[i]);
PolyhedralFan facets=temp.facetComplex();
for(PolyhedralFan::coneIterator j=facets.conesBegin();j!=facets.conesEnd();j++)
adjacency[j->getUniquePoint()].push_back(i);
}
// SphereTraverser(vector<PolyhedralCone> const &cones_, map<IntegerVector,list<int> > const &ajacency_, IntegerVector const &startCone, IntegerVector const &normal);
SphereTraverser traverser(F1,adjacency,F1[0].getUniquePoint(),*F1[0].getEquations().begin());
MyTarget myTarget;
SymmetryGroup s(f1.getAmbientDimension());
// SymmetricTargetFanBuilder myTarget(f1.getAmbientDimension(),s);
symmetricTraverse(traverser,myTarget);
// myTarget.getFanRef().printWithIndices(&pout);
myTarget.toCone().print(&debug);
{
MyTraverser traverser(F1,adjacency,F1[0].getUniquePoint(),*F1[0].getEquations().begin());
SymmetryGroup s(f1.getAmbientDimension());
SymmetricTargetFanBuilder myTarget(f1.getAmbientDimension(),s);
symmetricTraverse(traverser,myTarget);
myTarget.getFanRef().printWithIndices(&pout);
}
return 0;
}
};
static FanCoarseningApplication theApplication;
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