What is Transition Logic (TL)?
Transition Logic (TL) is first and foremost a method of designing a graphics package that allows the designer to maintain the look and feel of the graphics while also allowing anyone else, such as journalists or producers, to add graphics items to a rundown without the need for any kind of technical knowledge of how the system works. TL allows the independent control of any number of graphics layers, providing a code-free and design-based method for building graphics that gracefully animates in and out, and transitions from one to another automatically. Transition Logic (TL) can be played out by most Vizrt control applications such as Viz Trio, Viz Pilot and Viz Multichannel.
How does TL Work?
This is accomplished by using a Master Scene that coordinates the animation of independently controlled objects which make up the whole. The master scene commonly contains the background items of the graphics package. Such items can be looping backgrounds or the design items of the lower third, over the shoulders, and full-screen graphics. The variable or changing content, such as the text in a lower third, is stored separately in Object Scenes.
When a lower third is played On Air, the object scene for the lower third is triggered. This tells the engine to load the master scene, place the object scene inside the master, and animate the timelines. TL handles all of this automatically.
Basic TL Concepts
Combo Templates: A TL template that contains more than one layer of scenes.
Master Scenes: A TL scene is not a single scene, but a set of Viz graphics scenes that consist of a master scene that may have multiple layers of graphics that can be On Air at the same time and independently controlled.
Object Scenes: Each layer in the master scene may have multiple referring object scenes. However, only one object scene per layer can be active at any given time.
Layers: Layers in the transition logic scene define how many scenes can be on air at the same time. TL layers are conceptual, not spatial.
Note: With Transition Logic scene design, take in and take out commands are still used as with standalone scene design. Where standalone scene design demands that only a single scene can be On Air at a time. However, Transition Logic allows more than one scene to be On Air simultaneously. This means using Transition Logic lets you have a graphic covering the lower third of the screen and another graphic covering the left and/or right side of the screen for the shoulder graphics On Air at the same time.