@maxgraph/core
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    Class Morphing

    Implements animation for morphing cells. Here is an example of using this class for animating the result of a layout algorithm:

    graph.getDataModel().beginUpdate();
    try
    {
      let circleLayout = new mxCircleLayout(graph);
      circleLayout.execute(graph.getDefaultParent());
    }
    finally
    {
      let morph = new Morphing(graph);
      morph.addListener(mxEvent.DONE, ()=>
      {
        graph.getDataModel().endUpdate();
      });

      morph.startAnimation();
    }

    Constructor: Morphing

    Constructs an animation.

    Reference to the enclosing AbstractGraph.

    Optional number of steps in the morphing animation. Default is 6.

    Optional easing constant for the animation. Default is 1.5.

    Optional delay between the animation steps. Passed to Animation.

    Hierarchy (View Summary)

    Index

    Constructors

    constructor

    Properties

    cells delay ease eventListeners eventsEnabled eventSource graph step steps thread

    Methods

    addListener animateCell fireEvent getDelta getEventSource getOriginForCell isEventsEnabled isRunning removeListener setEventsEnabled setEventSource show startAnimation stopAnimation stopRecursion updateAnimation

    Constructors

    Properties

    cells: null | Cell[] = null

    Optional array of cells to be animated. If this is not specified then all cells are checked and animated if they have been moved in the current transaction.

    delay: number

    Specifies the delay between the animation steps.

    20ms
    ease: number

    Ease-off for movement towards the given vector. Larger values are slower and smoother. Default is 4.

    eventListeners: EventListenerObject[] = []

    Holds the event names and associated listeners in an array. The array contains the event name followed by the respective listener for each registered listener.

    eventsEnabled: boolean = true

    Specifies if events can be fired. Default is true.

    eventSource: null | EventTarget = null

    Optional source for events. Default is null.

    graph: AbstractGraph
    step: number = 0

    Contains the current step.

    steps: number

    Specifies the maximum number of steps for the morphing.

    thread: null | number = null

    Reference to the thread while the animation is running.

    Methods

    • Binds the specified function to the given event name. If no event name is given, then the listener is registered for all events.

      The parameters of the listener are the sender and an EventObject.

      Parameters

      • name: string
      • funct: Function

      Returns void

    • Dispatches the given event to the listeners which are registered for the event. The sender argument is optional. The current execution scope ("this") is used for the listener invocation (see Utils#bind).

      Example:

      fireEvent(new mxEventObject("eventName", key1, val1, .., keyN, valN))

      Parameters

      • evt: EventObject

        EventObject that represents the event.

      • sender: null | EventTarget = null

        Optional sender to be passed to the listener. Default value is the return value of .

      Returns void

    • Returns the top, left corner of the given cell. TODO: Improve performance by using caching inside this method as the result per cell never changes during the lifecycle of this object.

      Parameters

      • cell: null | Cell = null

      Returns null | Point

    • Returns true if the animation should not recursively find more deltas for children if the given parent state has been animated.

      Parameters

      Returns boolean

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