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Fusion Editor UI

Opening Fusion

There are multiple ways to open Fusion.

  • Via the menu
    Navigate to View > Fusion > Fusion.
  • Via the Scene Tree Panel
    Select a Node in the Scene Tree, then click the [Fusion...] button in the Extra Scene Tree on the right.
  • Via the State Machine Panel
    Select a State or Transition in the State Machine Editor, then click the [Fusion...] button in the State Machine Behaviors panel on the left lower half.
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Once Fusion is open, you can switch between Fusion and other editors (e.g. the Scene Editor) by selecting the corresponding tab.

To configure display preferences for the Fusion panel, open the Preferences dialog via the menu: File > Preferences..., then navigate to Preferences > Environment > Fusion.

Fusion Diagram

When Fusion is opened, it always displays the Fusion diagram for the node currently selected in the Scene Tree Panel or the state/transition selected in the State Machine Editor. 

A Fusion diagram consists of a Top Node, which serves as the root node, along with its attached behaviors, conditions and actions. The simplest Fusion diagram contains only the Top Node.

Fusion Nodes can be rearranged within the diagram using drag and drop. To select multiple nodes, click and drag a rectangle with your mouse to enclose the nodes you want to select.

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Path

The upper-left corner of the Fusion panel displays the path of the currently shown Top Node.

Up arrow

You can navigate to other Fusion diagrams by clicking the Up Arrow located in the upper-right corner of the Fusion panel.

  • When TopNode is an element that has a parent element
    (e.g. a Group Node in Scene Tree or a state enclosed within a parent state), pressing the Up Arrow will display the Fusion diagram of the parent element.
  • When TopNode is a transition or a state without a parent
    Pressing the Up Arrow returns you to State Machine Editor.
  • When TopNode is a scene
    The Up Arrow is disabled

Fusion Panel Toolbar

At the bottom of the Fusion panel, a toolbar provides controls for the panel display operations.

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1 Zoom Adjusts the display magnification. You can enter a numerical value or use the mouse wheel to zoom in and out.
2 Rearrange layout Automatically reorganizes the layout of Fusion Nodes within the diagram. This feature is particularly useful when nodes overlap or are difficult to view.
3 View whole layout Automatically adjusts the display magnification to fit the entire diagram within the Fusion panel.
4 Switch to selected node Centers the diagram on the selected Fusion Node. When a node is selected and this button is pressed, the display automatically positions the selected node in the center.
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