Radial Tree Layout (formerly: Balloon Layout)Radial Group Layout (formerly: Cactus Group Layout)

Radial Layout

This section describes the major changes to the RadialLayout class.

As with other major layout algorithms, the RadialLayout class no longer inherits from MultiStageLayout, but instead implements ILayoutAlgorithm directly. The layout stages are now managed by a LayoutStageStack, which can be obtained via the layoutStages property; see Layout Stages and Multi-Stage Layouts for more details.

Renamed, Moved, and Removed Classes and Members

The following table contains the renamed, moved, and removed classes and members of the major classes of the RadialLayout.

Renamed, moved, and removed members of classes related to the RadialLayout (classes are bold)
yFiles for HTML 2.6	yFiles for HTML 3.0	Remarks
RadialLayout	class name unchanged
Properties in class RadialLayout
centerNodesDpKey	removed	Use RadialLayoutData.centerNodes.
componentLayoutEnabled	componentLayout.enabled
considerNodeLabels	nodeLabelPlacement	Has been combined with properties IntegratedNodeLabeling and NodeLabelingPolicy.
edgeRoutingStrategy	edgeRoutingStyle
hideGroupsStage	removed	The RadialLayout is able to handle group nodes itself.
hideGroupsStageEnabled	removed	The RadialLayout is able to handle group nodes itself.
integratedNodeLabeling	nodeLabelPlacement	Has been combined with properties ConsiderNodeLabeling and NodeLabelingPolicy.
labeling	removed	To influence the labeling, use the nodeLabelPlacement and edgeLabelPlacement properties.
labelingEnabled	removed
layoutOrientation	removed	Changing the layout orientation does not make sense for an undirected layout algorithm.
minimumEdgeToEdgeDistance	minimumEdgeDistance
minimumNodeToNodeDistance	minimumNodeDistance
nodeLabelingPolicy	nodeLabelPlacement	Has been combined with properties ConsiderNodeLabeling and IntegratedNodeLabeling.
orientationLayout	removed	Changing the layout orientation does not make sense for an undirected layout algorithm.
orientationLayoutEnabled	removed
parallelEdgeRouterEnabled	parallelEdgeRouter.enabled
selfLoopRouterEnabled	selfLoopRouter.enabled
subgraphLayout	removed	If necessary, the RadialLayout can be wrapped by a SubgraphLayoutStage, but this may lead to overlaps.
subgraphLayoutEnabled	removed

RadialLayoutData	RadialLayoutData<TNode,TEdge,TNodeLabel,TEdgeLabel>
Properties in class RadialLayoutData
abortHandler	removed	A LayoutAbortController is added by the LayoutExecutor; see Section Maximum Duration and Aborting of Algorithms for more details.
nodeComparables	childOrder.targetNodeComparables	Moved to sub-data childOrder.
nodeHalos	nodeMargins	The type of the values was changed to Insets.
nodeInfos	nodePlacementsResult
outEdgeComparers	childOrder.outEdgeComparators	Moved to sub-data childOrder.

CenterNodesPolicy	enum name unchanged
Constants in enum CenterNodesPolicy
custom	removed	Custom center nodes defined via the RadialLayoutData.centerNodes are considered automatically.

RadialLayoutEdgeRoutingStrategy	RadialLayoutRoutingStyle
RadialLayoutLayeringStrategy	RadialLayeringStrategy
Constants in enum RadialLayeringStrategy
USER_DEFINED	removed	Custom layers defined via the RadialLayoutData.layerIds are considered automatically.

RadialLayoutNodeInfo	RadialLayoutNodePlacementResult

Changed Default Values and Behavior Changes

Node labels are now considered by default. To change this behavior, set the nodeLabelPlacement property to the desired value. This property allows switching between all integrated node labeling policies and placing the node labels with GenericLabeling.

Edge labels are now placed by the GenericLabeling algorithm by default. To change this behavior, set the edgeLabelPlacement property to the desired value.

Port placement now takes the specified port candidates into account. Port candidates can be specified via the properties on the sub-data RadialLayoutData.ports. The ports are placed in a post-processing step by the PortPlacementStage.

If custom layers are defined via the RadialLayoutData.layerIds property, these are considered automatically, and the value of RadialLayout.layeringStrategy is ignored. It is no longer necessary to set it to RadialLayoutLayeringStrategy.USER_DEFINED, which consequently has been removed.

If custom center nodes are defined via the RadialLayoutData.centerNodes property, these are considered automatically, and the value of RadialLayout.centerNodesPolicy is ignored. It is no longer necessary to set it to CenterNodesPolicy.CUSTOM, which consequently has been removed.

Radial Tree Layout (formerly: Balloon Layout)Radial Group Layout (formerly: Cactus Group Layout)