public LayoutInfo CalculateLayout()
{
var vertexCenters = CalculateVertexCenters();
var edgeRoutes = CalculateEdgeRoutes(vertexCenters);
var diagramNodeRects = vertexCenters
.Where(i => i.Key is DiagramNodeLayoutVertex)
.Select(i => (diagramNode: ((DiagramNodeLayoutVertex)i.Key).DiagramNode, center: i.Value))
.ToDictionary(
i => i.diagramNode.Id,
i => Rect2D.CreateFromCenterAndSize(i.center, i.diagramNode.Size));
return(new LayoutInfo(diagramNodeRects, edgeRoutes));
}
public IDictionary <ModelNodeId, Rect2D> Calculate(IEnumerable <IDiagramNode> nodes, IEnumerable <IDiagramConnector> connectors)
{
var diagramNodeToLayoutVertexMap = new Map <ModelNodeId, DiagramNodeLayoutVertex>();
var diagramConnectorToLayoutPathMap = new Map <ModelRelationshipId, LayoutPath>();
var layoutVertices = nodes.Select(i => CreateLayoutVertex(i, diagramNodeToLayoutVertexMap)).OrderBy(i => i.DiagramNode.AddedAt).ThenBy(i => i.Name)
.ToList();
var layoutPaths = connectors.Select(i => CreateLayoutPath(i, diagramNodeToLayoutVertexMap, diagramConnectorToLayoutPathMap)).ToList();
var relativeLayout = RelativeLayoutCalculator.Calculate(layoutVertices, layoutPaths);
var layoutVertexToPointMap = AbsolutePositionCalculator.GetVertexCenters(relativeLayout, HorizontalGap, VerticalGap);
return(diagramNodeToLayoutVertexMap.ToDictionary(
i => i.Key,
i => Rect2D.CreateFromCenterAndSize(layoutVertexToPointMap.Get(i.Value), i.Value.Size)));
}
private void CheckThatParentsAreCentered(LayoutVertexToPointMap vertexCenters)
{
foreach (var vertex in ProperLayoutGraph.Vertices)
{
if (ProperLayoutGraph.HasPrimaryChildren(vertex))
{
var childrenBlockRect = ProperLayoutGraph.GetPrimaryChildren(vertex)
.Select(i => Rect2D.CreateFromCenterAndSize(vertexCenters.Get(i), i.Size))
.Union();
if (!vertexCenters.Get(vertex).X.IsEqualWithTolerance(childrenBlockRect.Center.X))
{
throw new Exception($"{vertex} is not centered to its children.");
}
}
}
}
public Rect2D GetRect(LayoutVertexBase vertex)
{
var center = Get(vertex);
return(Rect2D.CreateFromCenterAndSize(center, vertex.Size));
}