Code

void TestGenogram()
{
	GenerateGenogram();
	ArrangeGenogram();
}

void GenerateGenogram()
{
	diagram.ClearAll();

	var n1 = AddNode("Grand Papa", 0);
	var n2 = AddNode("Grand Maman", 0);
	var c1 = SetCouple(n1, n2);

	var n3 = AddNode("Pierre", 0);
	var n4 = AddNode("Yolande", 0);
	var c2 = SetCouple(n3, n4);

	var n5 = AddNode("Lisa", 0);
	var n6 = AddNode("Lisa's first hsb.", 0);
	var c3 = SetCouple(n5, n6);

	var n7 = AddNode("Andre", 1);
	var n8 = AddNode("Helene", 1);
	var n9 = AddNode("???", 1);
	var c4 = SetCouple(n7, n8);
	var c5 = SetCouple(n7, n9);

	SetChild(n7, c1);
	SetChild(n8, c2);
	SetChild(n9, c3);

	var n10 = AddNode("Daniel", 2);
	var n11 = AddNode("Anne", 2);
	var n12 = AddNode("Benoit", 2);
	var n13 = AddNode("Raphael", 2);
	var n14 = AddNode("Estelle", 2);
	var n15 = AddNode("Jean claude", 2);
	var n16 = AddNode("Mike", 2);

	SetChild(n10, c4);
	SetChild(n11, c4);
	SetChild(n12, c4);
	SetChild(n14, c4);
	SetChild(n15, c4);
	SetChild(n16, c5);

	SetCouple(n13, n14);
}

DiagramNode AddNode(string name, int generation)
{
	var node = diagram.Factory.CreateShapeNode(0, 0, 15, 8);
	node.Text = name;
	node.LayoutTraits[LayeredLayoutTraits.Layer] = generation * 2;
	node.Font = new Font("Arial", 7);
	return node;
}

void SetChild(DiagramNode node, DiagramNode couple)
{
	diagram.Factory.CreateDiagramLink(couple, node);
}

DiagramNode SetCouple(DiagramNode n1, DiagramNode n2)
{
	var node = diagram.Factory.CreateShapeNode(0, 0, 1, 1);
	node.Transparent = true;
	node.LayoutTraits[LayeredLayoutTraits.Layer] =
		(int)n1.LayoutTraits[LayeredLayoutTraits.Layer] + 1;
	var l1 = diagram.Factory.CreateDiagramLink(n1, node);
	l1.HeadShape = ArrowHeads.None;
	var l2 = diagram.Factory.CreateDiagramLink(n2, node);
	l2.HeadShape = ArrowHeads.None;
	return node;
}

void ArrangeGenogram()
{
	var ll = new LayeredLayout();
	ll.EnableCustomLayers = true;
	ll.LayerDistance = 10;
	ll.StraightenLongLinks = true;
	ll.Arrange(diagram);

	foreach (var link in diagram.Links)
	{
		link.Shape = LinkShape.Cascading;
		var or = link.Origin.Bounds;
		var dr = link.Destination.Bounds;
		SetLinkPoints(link,
			new PointF(or.X + or.Width / 2, or.Bottom),
			new PointF(or.X + or.Width / 2, (or.Bottom + dr.Top) / 2),
			new PointF(dr.X + dr.Width / 2, (or.Bottom + dr.Top) / 2),
			new PointF(dr.X + dr.Width / 2, dr.Top));
	}
}

void SetLinkPoints(DiagramLink link, params PointF[] points)
{
	link.AutoRoute = false;
	link.Shape = LinkShape.Cascading;
	link.ControlPoints.Clear();
	link.ControlPoints.AddRange(points);
	link.UpdateFromPoints(false, true);
}