Tag Archives: actionscript

This is probably the hardest quiz yet. After yesterdays very easy quiz I figured I'd do something really trickey... binary is always a good way to make a quiz hard... so most of the questions are about binary operators and ByteArray... there is also one question about Bezier math.

Number of Questions : 7
Difficulty : Hard
Topic : Binary and Bezier

Which random sequence would you associate the below snippet with?

for (var i:int = 0; i<4; i++){
  trace(int(Math.random()*2) - 1 | 1);
}

1, 0, 1, 0
2, 1, 0, 1
0, 0, 0, 0
1, -1, -1, 1
-2, 1, -2, 1

Which of the below sequences would you associate with the following snippet?

for (var i:int = 0; i<10; i++){
  trace(i & 2);
}

You may want to work this out on paper

0,0,0,2,2,0,0,0,2,2
0,0,0,0,4,4,4,4,0,0
0,1,0,1,0,1,0,1,0,1
0,0,2,2,0,0,2,2,0,0
0,2,0,2,0,2,0,2,0,2

A quadratic Bézier curve is the path traced by the function B(t), given points P₀, P₁ and P₂.

The above is from wikipedia.

Which of the below lines of actionscript accurately represents the B(t) function? Hint: Try working it out yourself and then choosing the answer that is closest to your own. You can use this template over at wonderfl to help you work it out:

Math.pow(1 - t, 2) + p0 + 2 * (1 - t) * t * p1 + t * 2 * p2
(1 - t) * 2 * p0 + (1 - t) * p1 + t * t * p2
(1 - t) * (1 - t) * p0 + 2 * (1 - t) * t * p1 + t * t * p2
(1 - t) * (1 - t) * p * 0 + 2 * (1 - t) * t * p * 1 + t * t * p * 2;

What is the length of the following ByteArray?

var bytes:ByteArray = new ByteArray();
bytes.writeInt(0xFFFFFF);

2
4
8
16

What is the length of the following ByteArray?

var bytes:ByteArray = new ByteArray();
bytes.writeInt(0xFFFFFF);
bytes.writeUnsignedInt(0xFFFFFF);

2
4
5
6
8
16

How many bytes does it take to represent a short in a ByteArray?

1
2
4
5

What will the following snippet trace to the output window?

var bytes:ByteArray = new ByteArray();
bytes[0] = 0;
bytes[1] = 0;
bytes[2] = 1;
bytes[3] = 1;

bytes.position = 0

trace(bytes.readInt());

11
16842752
3
257

Today's quiz is not multiple choice. Instead, your task is to draw a spiral using a recursive function.

Optionally you can alter your function to draw other types of spiral forms:

(You can view various solutions in the comments - as well as my solution at wonderfl)

Today's quiz jumps around from topic to topic, touching on filters, events, BitmapData and more...

Number of Questions : 6
Difficulty : Medium
Topic : Miscellaneous

There were lots of great submissions to yesterdays quiz. If you haven't seen them, check them out here...
Click here to see two solutions two solutions to yesterdays quiz...

Today's quiz is medium level and covers a few different topics...

Number of Questions : 6
Difficulty : Medium
Topic : Graphics Class and more

This quiz is about sound and gradients...

Number of Questions : 5
Difficulty : Medium
Topic : Sound and Gradients