Smrf.NodeXL.Visualization.Wpf.DraggedVertices.CreateVisual C# (CSharp) Method

    CreateVisual
    (
        Point currentMouseLocation,
        Color backColor,
        VertexDrawer vertexDrawer
    )
    {
        Debug.Assert(vertexDrawer != null);
        Debug.Assert(m_bDragIsInProgress);
        AssertValid();

        // This method redraws the dragged vertices at an offset location, and
        // adds the resulting Visuals to a ContainerVisual.
        //
        // Figure out the offset.

        Double dOffsetX = currentMouseLocation.X - m_oMouseDownLocation.X;
        Double dOffsetY = currentMouseLocation.Y - m_oMouseDownLocation.Y;

        GraphDrawingContext oGraphDrawingContext = new GraphDrawingContext(
            m_oGraphRectangle, m_iMargin, backColor);

        ContainerVisual oContainerVisual = new ContainerVisual();

        foreach (IVertex oVertex in m_aoVertices)
        {
            System.Drawing.PointF oOriginalLocation =
                GetOriginalVertexLocation(oVertex);

            oVertex.Location = new System.Drawing.PointF(
                oOriginalLocation.X + (Single)dOffsetX,
                oOriginalLocation.Y + (Single)dOffsetY
                );

            VertexDrawingHistory oVertexDrawingHistory;

            if ( vertexDrawer.TryDrawVertex(oVertex, oGraphDrawingContext,
                out oVertexDrawingHistory) )
            {
                oContainerVisual.Children.Add(
                    oVertexDrawingHistory.DrawingVisual);
            }
        }

        m_oVisual = oContainerVisual;

        return (m_oVisual);
    }