In which kind of motion do the 3 axes of an object change with its movement?
In rotational motion! Remember the “ball rolling” lab? The “forward” axis was changing as the ball was turning, which messed up the rolling.
What is a built-in Function?
Functions do NOT correspond to actions; instead they calculate a value and return it back so we can use that value in our code as needed. Examples are “distance to”, “is smaller than”, “width”, “height”, etc.
What do we mean when we say an object is “concrete” or “real”?
“Concrete” / “real” means “actual”. It is the actual object found in your Alice world and you can control with your code.
How can you iterate through a list in Alice?
You can use the “For all in order” to make them do the actions one at a time, or “For all together” to make them all do the actions at the same time.
What do we mean when we say a class is an “abstract” definition?
“Abstract” means “theoretical” or “conceptual”. It is not the actual object that you can control with your code; it just defines what an object of this class will look like, its properties and methods and functions will be once used in an Alice world.
What is the definite loop in Alice?
It is the “Loop” construct. It specifies exactly how many times should the loop repeat. Example: “Loop 10 times” will make the code inside it repeat exactly 10 times.
What is a Property?
Properties are the characteristics of the object, such as color, opacity. You can change the properties during scene setup and runtime. For example, “cookie set vehicle to tortoise”.
How can you control the visibility of an object in Alice?
Using “isShowing” (true/false) or “opacity” (number from 0 to 1).
What are the 2 views that you can use during scene setup?
Single view (the current view of the camera) versus Quad View (shows you the camera view as well as view from the top, the right, and front).
What is Interactive Programming?
Interactive programs allow the user to provide input during the runtime of an animation. The program responds to the user’s input with specific behavior defined in an event-handling method. Examples of input from user are “mouse clicks” and “key strokes”.
