This is an extension and not part of the main GoJS library. Note that the API for this class may change at any time. If you intend to use an extension in production, you should copy the code to your own source directory. See the Extensions intro page for more information.
Constructs a ParallelLayout and sets the following properties:
Optional init: Partial<ParallelLayout>This read-only property returns the node that the tree will converge at.
This read-only property returns the node that the tree will extend from.
Find a Split vertex and a Merge vertex for this layout. This signals an error if there is not exactly one vertex/Node that isSplit and exactly one vertex/Node that isMerge. This can be overridden; any override must set splitNode and mergeNode.
Overridable predicate for deciding if a Node is a Merge node. By default this checks the node's go.Part.category to see if it is 'Merge', 'End', 'EndFor', 'EndWhile', 'EndIf', or 'EndSwitch'.
Overridable predicate for deciding if a Node is a Split node. By default this checks the node's go.Part.category to see if it is 'Split', 'Start', 'For', 'While', 'If', or 'Switch'.
A custom go.TreeLayout that can be used for laying out stylized flowcharts. Each layout requires a single 'Split' node and a single 'Merge' node. The 'Split' node should be the root of a tree-like structure if one excludes links to the 'Merge' node. This will position the 'Merge' node to line up with the 'Split' node.
You can set all of the TreeLayout properties that you like, except that for simplicity this code just works for angle === 0 or angle === 90.
If you want to experiment with this extension, try the Parallel Layout sample.