<commit_before>#ifndef POSITIONQUERY_H
#define POSITIONQUERY_H

#include <QVector2D>

/* interface */ class PositionQuery
{
public:
    // Absolute position in meters
    virtual QVector2D position() const = 0;
<commit_msg>Add proper virtual destructor<commit_after>#ifndef POSITIONQUERY_H
#define POSITIONQUERY_H

#include <QVector2D>

/* interface */ class PositionQuery
{
public:
    virtual ~PositionQuery() {}

    // Absolute position in meters
    virtual QVector2D position() const = 0;

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