Monthly Archives: February 2009

N to the power of N (with strings)

Actionscript:
  1. var input:String =  "a, b, c";
  2.  
  3. var words:Array = input.split(", ");
  4. var max:String = "";
  5. var maxD:String =  (words.length - 1).toString();
  6. for (var i:int = 0; i<words.length; i++){
  7.     max += maxD;
  8. }
  9. var maxInt:int = parseInt(max,words.length);
  10.  
  11. for(i = 0; i<=maxInt; i++){
  12.      var indices:String = i.toString(words.length);
  13.      var r:String = "";
  14.      var k:int=0;
  15.      for (var j:int = 0; j<indices.length; j++){
  16.          r += words[parseInt(indices.charAt(j))] +" ";
  17.          k++;
  18.      }
  19.      while(k <words.length) {
  20.         r = words[0] +" "+ r;
  21.         k++;
  22.      }
  23.     trace(r);
  24. }
  25. trace(i, " variations");

Like many things on this site, I coded this rather quickly and it can probably be cleaned up...

Setting the input variable of the above snippet to "a, b" will output:

a a
a b
b a
b b
4 variations

Setting the input to "a, b, c" will output:

a a a
a a b
a a c
a b a
a b b
a b c
a c a
a c b
a c c
b a a
b a b
b a c
b b a
b b b
b b c
b c a
b c b
b c c
c a a
c a b
c a c
c b a
c b b
c b c
c c a
c c b
c c c
27 variations

I created this to work with words... inputs like "bread, breath, blobs, backwards". Be careful because you can quickly get millions of outputs:

1 to the power of 1 is 1
2 to the power of 2 is 4
3 to the power of 3 is 27
4 to the power of 4 is 256
5 to the power of 5 is 3125
6 to the power of 6 is 46,656
7 to the power of 7 is 823,543
8 to the power of 8 is 16,777,216
etc...

Posted in Math, misc, string manipulation | Tagged , | Leave a comment

Tweetcoding

Actionscript:
  1. g=graphics;
  2. mt=g.moveTo;
  3. lt=g.lineTo;
  4. ls=g.lineStyle;
  5. m=Math;
  6. r=m.random;
  7. s=m.sin;
  8. i=0;
  9. o={};
  10. function f(e){
  11.     s=150,x=y=s,z=-s,c=(!i)?addChild(new Bitmap(new BitmapData(s,s))).bitmapData:c;while(i<22500)i++,c.setPixel(i%s,i/s,(i%s|i/s)*mouseX);i=1;
  12. }
  13. addEventListener("enterFrame",f);

Have to link to this very fun new contest:

http://tweetcoding.machine501.com/

http://gskinner.com/playpen/tweetcoding.html

I may just have to get a twitter account...

Posted in misc | Tagged , | Leave a comment

24hr Clock

Actionscript:
  1. var clock:Sprite = Sprite(addChild(new Sprite()));
  2. clock.x = clock.y = 150;
  3.  
  4. var bg:Shape = Shape(clock.addChild(new Shape()));
  5. with (bg.graphics) lineStyle(2, 0x666666), beginFill(0xEFEFEF), drawCircle(0,0,110);
  6.  
  7. var hHand:Shape = clockHand(6, 50);
  8. var mHand:Shape = clockHand(2, 80);
  9. var sHand:Shape = clockHand(1, 90);
  10.  
  11. var center:Shape = Shape(clock.addChild(new Shape()));
  12. with (center.graphics) beginFill(0x000000), drawCircle(0,0,5);
  13.  
  14. var hInc:Number = 360/24;
  15. var msInc:Number = 360/60 ;
  16. var nOff:Number = 6;
  17. var verdana:TextFormat = new TextFormat("Verdana", 8);
  18. // add numbers to clock
  19. for (var i:int = 0; i<24; i++){
  20.      var ang:Number = (i * hInc - 90) * Math.PI/180;
  21.      createNumber(70,ang, i.toString());
  22.      var ms:Number = i * 2.5;
  23.      if (ms % 5 == 0){
  24.         createNumber(95, ang, ms.toString());
  25.      }
  26. }
  27.  
  28. addEventListener(Event.ENTER_FRAME, onLoop);
  29. function onLoop(evt:Event):void {
  30.     var date:Date = new Date();
  31.     hHand.rotation =  hInc * date.getHours();
  32.     mHand.rotation =  msInc * date.getMinutes();
  33.     sHand.rotation =  msInc * date.getSeconds();
  34. }
  35.  
  36. function clockHand(thickness:Number, leng:Number):Shape{
  37.     var hand:Shape = Shape(clock.addChild(new Shape()));
  38.     with (hand.graphics) {
  39.         lineStyle(thickness, 0x000000, 1, true, LineScaleMode.NORMAL, CapsStyle.SQUARE);
  40.         lineTo(0,-leng);
  41.     }
  42.     return hand;
  43. }
  44.  
  45. function createNumber(radius:Number, theta:Number, str:String):void{
  46.     var t:TextField = TextField(clock.addChild(new TextField()));
  47.     with (t) defaultTextFormat = verdana, t.autoSize = "left";
  48.     t.text = str;
  49.     t.x = radius * Math.cos(theta) - nOff;
  50.     t.y = radius* Math.sin(theta) - nOff;
  51. }

I was watching a movie the other day and I saw a 24 hour clock in the background of one of the shots. After the movie I coded this snippet. It draws a very basic clock with an hour hand that takes 24 hours to go full circle...

Posted in misc | Tagged , | 4 Comments

Square Bracket Syntax & Typecasting

Actionscript:
  1. addChild(new TextField());
  2. getChildAt(0)["text"] = "Hello World";

Notice that square bracket syntax makes it so we don't need to typecast. Take a look at the other way:

Actionscript:
  1. addChild(new TextField());
  2. TextField(getChildAt(0)).text = "Hello World";

Typecasting is the way to go.... the square bracket technique is just an interesting trick.

I wrote this after somehow stumbling on this very entertaining page - it shows hello world written in approximately 200 different languages...

Posted in dynamic, misc | Tagged , | Leave a comment