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/**
* \brief Solve an instance of the "Variable Placement with Separation
* Constraints" problem.
*
* Authors:
* Tim Dwyer <tgdwyer@gmail.com>
*
* Copyright (C) 2005 Authors
*
* Released under GNU LGPL. Read the file 'COPYING' for more information.
*/
#ifndef SEEN_REMOVEOVERLAP_SOLVE_VPSC_H
#define SEEN_REMOVEOVERLAP_SOLVE_VPSC_H
#include <vector>
class Variable;
class Constraint;
class Blocks;
/**
* Variable Placement with Separation Constraints problem instance
*/
class VPSC {
public:
virtual void satisfy();
virtual void solve();
VPSC(const unsigned n, Variable *vs[], const unsigned m, Constraint *cs[]);
virtual ~VPSC();
Constraint** getConstraints() { return cs; }
Variable** getVariables() { return vs; }
protected:
Blocks *bs;
Constraint **cs;
unsigned m;
Variable **vs;
void printBlocks();
private:
void refine();
bool constraintGraphIsCyclic(const unsigned n, Variable *vs[]);
bool blockGraphIsCyclic();
};
class IncVPSC : public VPSC {
public:
unsigned splitCnt;
void satisfy();
void solve();
void moveBlocks();
void splitBlocks();
IncVPSC(const unsigned n, Variable *vs[], const unsigned m, Constraint *cs[]);
private:
typedef std::vector<Constraint*> ConstraintList;
ConstraintList inactive;
Constraint* mostViolated(ConstraintList &l);
};
#endif // SEEN_REMOVEOVERLAP_SOLVE_VPSC_H
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