Lưu ý rằng ranh giới không thực sự quan trọng ở đây. Chụp nhất của màn hình đang chạy, bao gồm cả các cạnh của nó và thậm chí cả một chút về những gì đằng sau nó là tốt. 6. Bây giờ theo dõi bắn, đầu tiên về phía trước xem các dẫn sử dụng mocha-AE một ví dụ nơi mà nó là cần thiết để tổ chức ra màn hình), và hầu hết các đáng kể | Simpo PDF Merge and Split Unregistered Version - http Music is math. Michael Sandison and Marcus Eoin Boards of Canada Expressions Expressions are cool. You can use them to create amazing procedural effects that would otherwise be impossible or at least impractical . You can also use them to create complex relationships between various parameters. Unfortunately many After Effects users are afraid of expressions. Don t be. The fact that you re reading this chapter indicates that you are at least curious about expressions. That s a good start. By the end of the chapter you ll see how expressions can open new doors for you and hopefully you ll have the confidence to give them a try. The best way to learn about expressions is to examine working examples to figure out what makes them tick. The examples in this chapter focus on how you can use expressions to create or control effects. As you work through the examples don t be discouraged if you need a couple passes or more to understand it all please keep in mind that I m mainly a code guy not a special effects or motion graphics artist. My examples may not be very visually impressive but using these same techniques you ll be able to create your own dazzling effects. What Expressions Are The After Effects expression language is a powerful set of tools with which you can control the behavior of a layer s properties. Expressions can range in complexity from ridiculously simple to mind-numbingly complicated. At the simple end of the spectrum you can use expressions to link one property to another or to set a property to a static value. At the other extreme you can create complex 314 Download from Simpo PDF Merge and Split Unregistered Version - http Essentials linkages manipulate time perform calculations in 3D space set up tricky procedural animations and more. Sometimes you ll use expressions instead of keyframes most properties that can be keyframed can be controlled by .
