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Foundry Virtual Tabletop - API Documentation - Version 14
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    Class TransitionContainer

    Persistent overlay dedicated to scene transitions.

    Hierarchy (View Summary)

    Index

    Properties

    defaultDuration defaultTransitionType isLocked

    Accessors

    isRunning promise

    Methods

    _captureCurrentScene _captureNextScene _play _reset cancel run

    Properties

    defaultDuration: number = 1000

    Default transition duration used by TransitionContainer#_play when no explicit duration is provided (milliseconds).

    defaultTransitionType: string = CONFIG.Canvas.sceneTransitions.fade.id

    Desired transition type to use for transitions when no explicit type is provided.

    isLocked: boolean = false

    Flag indicating whether this container is reserved for an external workflow. When true, core scene transitions should not use this container.

    Accessors

    • get isRunning(): boolean

      Flag indicating whether a transition animation is currently running. Prevents overlapping calls to TransitionContainer#_play.

      Returns boolean

    • get promise(): Promise<void> | null

      Promise that resolves when the current transition finishes or is cancelled. Reused to return the same promise on repeated TransitionContainer#_play calls.

      Returns Promise<void> | null

    Methods

    _captureCurrentScene

    • _captureCurrentScene(
          options?: { black?: boolean; clearColor?: number[] },
      ): RenderTexture | null
      Internal

      Capture the currently displayed scene into a render texture and show it. If black is true, uses a solid black frame instead of capturing the scene.

      Parameters

      • Optionaloptions: { black?: boolean; clearColor?: number[] } = {}

        Capture options.

        • Optionalblack?: boolean

          When true, uses a black frame instead of capturing.

        • OptionalclearColor?: number[]

          RGBA clear color in the 0-1 range.

      Returns RenderTexture | null

      The render texture of the current scene, or null if black.

    _captureNextScene

    • _captureNextScene(
          options?: { clearColor?: number[]; transitionType?: string },
      ): Promise<RenderTexture>
      Internal

      Capture the next rendered frame of the new scene into a render texture. Internally waits for the next postrender so all canvas groups and caches are fully updated before capturing. The filter class and filter type are resolved from CONFIG.Canvas.sceneTransitions.

      Parameters

      • Optionaloptions: { clearColor?: number[]; transitionType?: string } = {}

        Capture options.

      Returns Promise<RenderTexture>

      Promise resolving to the captured render texture.

    _play

    • _play(opts?: { duration?: number; easing?: Function }): Promise<void>

      Run the transition animation from the captured "from" texture to the "to" texture. If a transition is already running, returns the existing promise. If no filter has been prepared, resolves immediately.

      Parameters

      • Optionalopts: { duration?: number; easing?: Function } = {}

        Animation options.

        • Optionalduration?: number

          Duration in milliseconds.

        • Optionaleasing?: Function

          Easing function mapping [0,1] to [0,1].

      Returns Promise<void>

      Promise that resolves when the transition completes.

    _reset

    • _reset(): void

      Reset the internal state of the transition container.

      Returns void

    • Cancel any currently running transition and await its termination.

      Returns Promise<void>

    • Run a full transition around a given canvas operation. Encapsulates captureCurrentScene => operation/scene switch => captureNextScene => play.

      If both options.operation and options.nextScene are provided, the operation runs first, then the Scene is switched.

      If neither options.operation nor options.nextScene are provided, a simple demo transition is performed from a black frame to the currently rendered Scene.

      Parameters

      • Optionaloperation: Function = {}

        Async function performing canvas changes.

      Returns Promise<void>

      Promise that resolves when the transition completes.

      await canvas.transition.run({
        operation: async () => {
          await canvas.animatePan({
            x: 2000,
            y: 1500,
            scale: 1.25,
            duration: 0
          });
        },
        duration: 800,
        transitionType: "dots"
      });

      const scene = game.scenes.get("ABC123");
      await canvas.transition.run({
        nextScene: scene,
        activate: true,
        duration: 1200,
        transitionType: "fade"
      });

      await canvas.transition.run({
        fromBlack: true,
        duration: 800,
        transitionType: "swirl"
      });

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