public IncrementalLayoutEngine()
{
_diagramNodeToLayoutVertexMap = new Map <IDiagramNode, DiagramNodeLayoutVertex>();
_diagramConnectorToLayoutPathMap = new Map <IDiagramConnector, LayoutPath>();
_layoutPathToPreviousRouteMap = new Map <LayoutPath, Route>();
_previousVertexCenters = new LayoutVertexToPointMap();
_relativeLayoutCalculator = new RelativeLayoutCalculator();
_diagramActionDispatcherVisitor = new DiagramActionDispatcherVisitor(this);
}
public IncrementalLayoutCalculator(ILayoutPriorityProvider layoutPriorityProvider)
{
_layoutPriorityProvider = layoutPriorityProvider ?? throw new ArgumentNullException(nameof(layoutPriorityProvider));
_diagramNodeToLayoutVertexMap = new Map <IDiagramNode, DiagramNodeLayoutVertex>(new DiagramNodeIdEqualityComparer());
_diagramConnectorToLayoutPathMap = new Map <IDiagramConnector, LayoutPath>(new DiagramConnectorIdEqualityComparer());
_layoutPathToPreviousRouteMap = new Map <LayoutPath, Route>();
_previousVertexCenters = new LayoutVertexToPointMap();
_relativeLayoutCalculator = new RelativeLayoutCalculator();
_diagramActionDispatcherVisitor = new DiagramActionDispatcherVisitor(this);
}
