TEST 2 topics and review

Question 1

What is the graphics console?

Answer 1

Window on screen where graphic images are drawn.

Question 2

graphics commands of:
Stroke, fill, line, ellipse, rect, quad, and triangle.

Answer 2

stroke(r, g, b);
fill(r, g, b);
line(x1, y1, x2, y2);
ellipse(x, y, w, h);
rect(x, y, w, h);
quad(x1, y1, x2, y2, x3, y3, x4, y4);
triangle(x1, y1, x2, y2, x3, y3);

Question 3

steps to animate an object

Answer 3

1. declare a variable outside draw() for values that would move during animation.
2. draw shape using the variables you need to change
3. modify variables using increments and decrements
4. call procedure in draw

Question 4

4 increment/decrement operators

Answer 4

x++; increase x by 1
x–; decrease x by 1
x+=#; increase x by #
x-=#; decrease x by #

Question 5

3 things needed to write a for loop

Answer 5

• starting value
• stop value
• increment/decrement

Question 6

Procedure name rules

Answer 6

1) starts with void keyword
2) must start with letter
3) can have letters, numbers, and underscore.
4) need matching parenthesis and curly brackets defining procedure.