Fx protocol defines the methods a plug-in must implement to create on-screen parameter controls.
- FxPlug 3.1+
Plug-ins can use the FxOnScreenControlAPI to draw controls and other user interface elements directly on the canvas where the user has applied the plug-in. This allows direct manipulation of the object and is a natural and fun way for users to interact with a plug-in. Use this API to transform points from the drawing space of the canvas or document to the pixel space of the object the user wants to manipulate, and vice-versa.