Problem in attachig two polygons

[rohitjun]

Hi,
I am doing one application in which, i wrote one class A to create different shapes of polygons. Then i wrote another class B for creating a special polygon which i have to attach with polygons of class A dynamically. Before i did somethinig similar but with QGraphicsItem class using setPos() function for attaching one polygon with another. But with QPolygon, it is working similar. Please suggest me some way.

Regards
Rohit

This is the constructor of class A

A::A(DiagramType diagramType, QMenu *contextMenu,
             QGraphicsItem *parent, QGraphicsScene *scene)
    : QGraphicsPolygonItem(parent, scene)
{
    myDiagramType = diagramType;
    myContextMenu = contextMenu;
 
    QPainterPath path;
 
    switch (myDiagramType) {
 
        case StartEnd:
            path.moveTo(200, 50);
            path.arcTo(150, 0, 50, 50, 0, 90);
            path.arcTo(50, 0, 50, 50, 90, 90);
            path.arcTo(50, 50, 50, 50, 180, 90);
            path.arcTo(150, 50, 50, 50, 270, 90);
            path.lineTo(200, 25);
            myPolygon = path.toFillPolygon();    //myPolygon is an object QPolygonF class
            break;
 
        case Conditional:
            myPolygon << QPointF(-100, 0) << QPointF(0, 100)   
                      << QPointF(100, 0) << QPointF(0, -100)
                      << QPointF(-100, 0);
            break;
 
       case Step:
            myPolygon << QPointF(-100, -100) << QPointF(100, -100)
                      << QPointF(100, 100) << QPointF(-100, 100)
                      << QPointF(-100, -100);
 
           break;
 
        default:
            myPolygon << QPointF(-120, -80) << QPointF(-70, 80)
                      << QPointF(120, 80) << QPointF(70, -80)
                      << QPointF(-120, -80);
            break;
    }
 
    anditem = new AndItem();
 
///// What code to write to attach andItem->myPolygon to myPolygon of this class.////
 
 
    setPolygon(myPolygon);
    setFlag(QGraphicsItem::ItemIsMovable, true);
    setFlag(QGraphicsItem::ItemIsSelectable, true);
 
}

A::A(DiagramType diagramType, QMenu *contextMenu,
             QGraphicsItem *parent, QGraphicsScene *scene)
    : QGraphicsPolygonItem(parent, scene)
{
    myDiagramType = diagramType;
    myContextMenu = contextMenu;

    QPainterPath path;

    switch (myDiagramType) {

        case StartEnd:
            path.moveTo(200, 50);
            path.arcTo(150, 0, 50, 50, 0, 90);
            path.arcTo(50, 0, 50, 50, 90, 90);
            path.arcTo(50, 50, 50, 50, 180, 90);
            path.arcTo(150, 50, 50, 50, 270, 90);
            path.lineTo(200, 25);
            myPolygon = path.toFillPolygon();    //myPolygon is an object QPolygonF class
            break;

        case Conditional:
            myPolygon << QPointF(-100, 0) << QPointF(0, 100)   
                      << QPointF(100, 0) << QPointF(0, -100)
                      << QPointF(-100, 0);
            break;

       case Step:
            myPolygon << QPointF(-100, -100) << QPointF(100, -100)
                      << QPointF(100, 100) << QPointF(-100, 100)
                      << QPointF(-100, -100);

           break;

        default:
            myPolygon << QPointF(-120, -80) << QPointF(-70, 80)
                      << QPointF(120, 80) << QPointF(70, -80)
                      << QPointF(-120, -80);
            break;
    }

    anditem = new AndItem();

///// What code to write to attach andItem->myPolygon to myPolygon of this class.////


    setPolygon(myPolygon);
    setFlag(QGraphicsItem::ItemIsMovable, true);
    setFlag(QGraphicsItem::ItemIsSelectable, true);

}

To copy to clipboard, switch view to plain text mode