blob: 4cd5559d600306eed13516225d9389aa226b2909 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
|
/**
* \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.
*/
//
// TODO: Really, we should have three classes: VPSC, IncrementalVPSC and
// StaticVPSC, where the latter two inherit from VPSC. StaticVPSC would be
// the equivalent of what is currently VPSC.
// Also, a lot of the code specific to one or other of these concrete
// implementations should be moved from Block and Blocks: e.g. mergeLeft etc.
//
#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* const vs[], const unsigned m, Constraint *cs[]);
virtual ~VPSC();
Constraint** getConstraints(unsigned &m) { m=this->m; return cs; }
const Variable* const * getVariables(unsigned &n) { n=this->n; return vs; }
protected:
Blocks *bs;
unsigned m;
Constraint **cs;
unsigned n;
const Variable* const *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* const vs[], const unsigned m, Constraint *cs[]);
private:
typedef std::vector<Constraint*> ConstraintList;
ConstraintList inactive;
Constraint* mostViolated(ConstraintList &l);
};
#endif // SEEN_REMOVEOVERLAP_SOLVE_VPSC_H
|
