Customizing Nuke with Gizmos - Nuke 101: Professional Compositing and Visual Effects - page 492

Nuke offers several levels of customization. I showed you very basic customization in
Chapter 1 —customizing the interface by changing the size of the panes and what they
contain. Other levels include Python scripting and Gizmos.
Python scripting , which I touch on in the appendix, lets you do intensive customization
by writing code that can control Nuke, your operating system, and any other application
or device that allows for such manipulation.
Gizmos are what this chapter is about. They are nodes that you create by adding together
othernodesandwrappingthemintoacustomtoolwithauserinterface,knobs,sliders,and
even on-screen controls. Doing so lets you automate mundane tasks—which you would
otherwise do over and over again—or create completely new functionality.
About Safety Areas
As you may have noticed, Nuke doesn't come with any kind of on-screen guides—not for
aligning things together, not for the center of the screen, and, indeed, not for safety areas.
In case you don't know what safety areas are, here's an explanation. In TV and in some
film formats, not all parts of an image end up on-screen. Some get cropped by the TV
or projector. It's just the nature of these mediums. Because of this, many programs show