Method inspect

examples/knights.cpp:343–375

Inspect space \a s

  KnightsInspector(void) : scene(nullptr), mw(nullptr) {}
  /// Inspect space \a s
  virtual void inspect(const Space& s) {
    const Knights& k = static_cast<const Knights&>(s);

    if (!scene)
      initialize();
    QList <QGraphicsItem*> itemList = scene->items();
    foreach (QGraphicsItem* i, scene->items()) {
      scene->removeItem(i);
      delete i;
    }

    for (int i=0; i<k.n; i++) {
      for (int j=0; j<k.n; j++) {
        scene->addRect(i*unit,j*unit,unit,unit);

        QPen pen(Qt::black, 2);
        if (!k.succ[i*k.n+j].assigned()) {
          pen.setColor(Qt::red);
          pen.setStyle(Qt::DotLine);
          pen.setWidth(0);
        }
        for (IntVarValues xv(k.succ[i*k.n+j]); xv(); ++xv) {
          int ky = xv.val() % k.n;
          int kx = xv.val() / k.n;
          scene->addLine(i*unit+unit/2,j*unit+unit/2,
                         kx*unit+unit/2,ky*unit+unit/2,
                         pen);
        }

      }
    }
    mw->show();
  }

  /// Set up main window
  void initialize(void) {