文档介绍：For your convenience Apress has placed some of the front matter material after the index. Please use the Bookmarks and Contents at a Glance links to access them. Download from Wow! eBook < Contents at a Glance Contents ...................................................................................................................... viAbout the Author ....................................................................................................... xvAbout the Technical Reviewers ............................................................................... xvi About the the Cover Image Artist ........................................................................... xvii Acknowledgments .................................................................................................. xviii Introduction ............................................................................................................... xix Part I:JavaScript Animation Basics Chapter 1 :Basic Animation Concepts ....................................................................... 3 Chapter 2: Basics of JavaScript for Animation ......................................................... 9 Chapter 3: Trigonometry for Animation ................................................................... 35 Chapter 4: Trigonometry for Animation ................................................................... 69 Part II:Basic Motion Chapter 5: Velocity and Acceleration .................................................................... 105 Chapter 6: Boundaries and Friction ....................................................................... 131 Chapter 7: User Interaction: Moving Objects Around .......................................... 153 Part III: Advanced Motion Chapter 8: Easing and Springing ........................................................................... 169 Chapter 9:Collision Detection .................................................................................