October 2010
Beginner
453 pages
15h 52m
English
Content preview from Learning ActionScript 3.0, 2nd EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 5. Timeline Control
IN THIS CHAPTER
Jump Right In
Playhead Movement
Frame Labels
Frame Rate
A Simple Site or Application Structure
What’s Next?
In this chapter, you’ll learn some basic approaches to controlling timelines—both that of the main Flash movie and the movie clips it contains. We’ll divide our focus into three main areas:
Jump Right In. Change the frame rate of your SWF at runtime.
Playhead Movement. This includes stopping and playing the file, and going to a specific frame.
Frame Labels. Including improved playhead movement techniques without relying on frame numbers.
Frame Rates. Changing the movie’s frame rate to increase or decrease animation speed during playback.
A Simple Site or Application Structure. We’ll wrap up the chapter by building a project that combines timeline animation with ActionScript navigation. The project can be used as an example template for a multistate application or Flash-based website.
We’ll also take a look at an undocumented feature that allows you to add frame scripts to movie clips at runtime and show you a demo of how to create a flexible structure for a Flash website or application.
Jump Right In
We’ll start off with one of the most-desired features in the evolution of ActionScript: the ability to adjust the frame rate of a file with code. Consider a simple example that switches a SWF’s frame rate between 1 and 24 frames per second, with every click of the mouse. This script can be found in the frame_rate_trace.fla source file.
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.