Smrf.NodeXL.Visualization.Wpf.CollapsedGroupDrawingManager.SetCollapsedFanMotifAttributes C# (CSharp) Method

    SetCollapsedFanMotifAttributes()
    {
        Debug.Assert(m_oCollapsedGroup != null);
        Debug.Assert(m_oCollapsedGroupVertex != null);
        Debug.Assert(m_oCollapsedGroupAttributes != null);
        AssertValid();

        // The vertex that represents the collapsed group should look like the
        // fan motif's head vertex.  Find the head vertex in the collection of
        // the group's vertices.

        String sHeadVertexName;
        Int32 iLeafVertices;

        if (
            !m_oCollapsedGroupAttributes.TryGetValue(
                CollapsedGroupAttributeKeys.HeadVertexName,
                out sHeadVertexName)
            ||
            !m_oCollapsedGroupAttributes.TryGetValue(
                CollapsedGroupAttributeKeys.LeafVertices, out iLeafVertices)
            )
        {
            // Behave gracefully.

            return;
        }

        Single radius = 0.1f;
        m_oCollapsedGroupVertex.SetValue(ReservedMetadataKeys.PerVertexRadius, radius);

        // The head part of the collapsed group vertex should have the same
        // color as the head vertex.  That color was just copied to the
        // collapsed group vertex.
        //
        // The fan part of the collapsed group vertex should be colored using
        // the color specified in the collapsed attributes for the fan motif.
        // Store this color in a special FanMotifFanColor key on the collapsed
        // group vertex.

        SetVertexColorFromCollapsedGroupAttributes(
            ReservedMetadataKeys.FanMotifFanColor);

        // Sample tooltip:
        //
        // Fan motif: 5 vertices with head vertex "HeadVertexName"

        m_oCollapsedGroupVertex.SetValue(
            ReservedMetadataKeys.PerVertexToolTip,

            String.Format(
                "Fan motif: {0} leaf vertices with head vertex \"{1}\""
                ,
                iLeafVertices,
                sHeadVertexName
                )
            );
    }