variable.h

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#pragma once
 
#include <vector>
#include <iostream>
class Block;
struct Constraint;
#include <vpsc/block.h>
 
typedef std::vector<Constraint*> Constraints;
struct Variable
{
        friend std::ostream& operator <<(std::ostream &os, const Variable &v);
public:
        const int id; // useful in log files
        double desiredPosition;
        const double weight;
        double offset;
        Block *block = nullptr;
        bool visited;
        Constraints in;
        Constraints out;
        char *toString();
        Variable(const int id_, const double desiredPos_, const double weight_)
                : id(id_)
                , desiredPosition(desiredPos_)
                , weight(weight_)
                , offset(0)
                , visited(false)
        {
        }
        double position() const {
                return block->posn+offset;
        }
};