animation q4

• Inverse Kinematics


  The mathematical way of calculating the different angles of a jointed object to achieve a certain configuration
• Armature


  • The hierarchical structure, like a tree, starts from a root and branches out in various ways
  • The armature defines where your object can bend and how the different bones are connected
• Armature Hierarchy


  • The first bone of an armature is the root bone and the parent of the child bones are linked to it
  • The bone in the chest is the parent, and each bone to the upper arm is a child, and the arms are siblings to each other
• Bone Tool


  • Can connect movie clip instances to form an articulated object that can be posed and animated with inverse kinematics
  • Can also create an armature within a shape, which can be posed and animated with inverse kinematics as well
• Bone


  Each rigid piece that makes up the armature
• Root Bone


  The first bone is considered the "root bone"
• Joint


  A connection between two or more bones
• Joint Speed


  • Refers to the stickiness or stiffness of a joint
  • A joint with a low joint speed value will be sluggish
  • A joint with a high joint speed value will be more responsive
• The first Armature layer was created in a pristine file
• Selection Tool


  Used to grab the bone in the chain of an armature
• Alt/Option Key


  Holding down this key allows you to move the position of any bone in your armature
• Shift Key


  Holding down the Shift key to temporarily disable the motion of the armature and isolate a single bone's rotation
• Walk Cycle


  A basic looping animation showing a character walking
• Constraints


  This function imposes limits on the poses that help you create more realistic animations
• Spring


  This feature simulates physics in any animated armature
• Damping


  Refers to how much the spring effect decreases with time
• Button


  • A basic visual indicator of something the user can interact with
  • Buttons are a kind of symbol that have four special states, or keyframes, that determine how the button appears
• Up State


  Shows the button as it appears when the mouse is not interacting with it
• Over State


  Shows the button as it appears when the mouse is hovering over it
• Down State


  Shows the button as it appears when the mouse is hovering over it and the mouse button is depressed
• Hit State


  Indicates the clickable or "hot" area of the button
• Invisible Buttons


  Useful for creating generic hotspots
• Naming Button Instances


  • Beginners often forget this crucial step
  • Critical step in creating interactive projects in Animate
  • Instance names are important because ActionScript and JavaScript use the names to reference those objects
  • Instance names are not the same as the symbol names in the Library panel
• ActionScript 3.0


  • A robust scripting language, to extend the functionality of ActionScript and Adobe AIR documents
  • Similar to JavaScript
• Variable


  • Represents a specific piece of data that helps you keep track of things
  • var is a keyword used to create a variable
• String


  Holds a set of alphanumeric characters
• Number


  Must contain a number
• Keyword


  A reserved word that is used to perform a specific task
• Arguments


  • The values most often seen between parentheses () in a line of code, provide specific details for a particular command
  • gotoAndPlay
• Function


  Groups together related lines of code that you can refer to by name
• Objects


  • Authoring environment
  • Helps you do certain tasks
• Sound Object


  Helps you control sound
• Date Object


  Helps you manipulate time-related data
• Methods


  • Commands that result in action
  • Doers of ActionScript
  • stop () and gotoAndPlay
• Properties


  • Describe an object
  • The properties of a movie clip include its height and width, x and y coordinates, and horizontal and vertical scale
• Semicolon


  The semicolon at the end of the line tells ActionScript that it has reached the end of the code line
• Curly Brackets


  The curly brackets in ActionScript code will be separated on different lines. This makes it easier to read what's inside the curly brackets
• Dot Operator (.)


  • Provides a way to access the properties and methods of an object
  • Think of the dot as a way to separate objects, methods, and properties
• Quotation Marks


  Whenever you're entering a string (like the URL of a website), use quotation marks around it
• Comments


  • You can add comments to remind yourself or others of what you are accomplishing with different parts of the script
  • To add a comment for a single line, start it with two slashes (//
  • To type a multiline comment, start it with /* and end it with */
  • Comments are ignored by Animate and won't affect your code at all