Actionscript:
-
var circs:Array = []
-
var circNum:int = 600;
-
addEventListener(Event.ENTER_FRAME, onAdd);
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function onAdd(evt:Event):void {
-
if (circs.length <circNum){
-
makeGrowable();
-
}
-
}
-
-
function makeGrowable(){
-
-
var s:MovieClip = MovieClip(addChild(new MovieClip()));
-
s.x = Math.random() * stage.stageWidth;
-
s.y = Math.random() * stage.stageHeight;
-
with(s.graphics){
-
lineStyle(0,0);
-
drawCircle(0,0,10);
-
}
-
s.scaleX = s.scaleY = 0;
-
circs.push(s);
-
s.addEventListener(Event.ENTER_FRAME, onScaleUp);
-
}
-
-
function onScaleUp(evt:Event):void {
-
var c:MovieClip = MovieClip(evt.currentTarget);
-
c.scaleX = c.scaleY += 0.05;
-
for (var i:int = 0; i<circs.length; i++){
-
var circ:MovieClip = circs[i];
-
if (circ != c){
-
var amt:Number = circ.width/2 + c.width/2;
-
var dx:Number = circ.x - c.x;
-
var dy:Number = circ.y - c.y;
-
var dist:Number = Math.sqrt(dx * dx + dy * dy);
-
if (amt> dist){
-
c.removeEventListener(Event.ENTER_FRAME, onScaleUp);
-
if (c.scaleX <0.1){
-
if (contains(c)){
-
removeChild(c);
-
}
-
}
-
}
-
}
-
-
}
-
}
Circle fitting is one of those things I've never bothered to do... today I figured I'd give it a try and this is what I came up with. I posted it on wonderfl:
Actionscript:
-
var story:String = "Fill in the _____.";
-
-
-
var txt:TextField = new TextField();
-
txt.defaultTextFormat = new TextFormat("Georgia", 20);
-
txt.width = stage.stageWidth;
-
txt.multiline = true;
-
txt.wordWrap = true;
-
txt.text = story;
-
addChild(txt);
-
-
var alph:Array = "abcdefghijklmnopqrstuvwxyz".split("");
-
var keys:Object = {};
-
for (var i:int = 0; i<alph.length; i++){
-
keys[65 + i] = alph[i];
-
}
-
stage.addEventListener(KeyboardEvent.KEY_DOWN, onKeyPressed);
-
function onKeyPressed(evt:KeyboardEvent):void{
-
-
if (evt.keyCode == Keyboard.ENTER){
-
story = "Fill in the _____.";
-
txt.text = story;
-
}
-
-
for (var i:int = 0; i<story.length; i++){
-
if (story.charAt(i) == "_"){
-
var head:String = story.substr(0, i);
-
var tail:String = story.substr(i + 1);
-
var letter:String = keys[evt.keyCode];
-
if (!letter) return;
-
story = head + letter + tail;
-
-
txt.text = story;
-
-
break;
-
}
-
}
-
}
I needed to do a fill in the blank for a personal project that I'm working on and this is what I came up with. Have a look at the swf here:
(you need to click first so you can type with the keyboard):
Fill in the blank
Posted in TextField, UI | Also tagged actionscript, flash |
Actionscript:
-
var xp:Number = 0;
-
var yp:Number = 0;
-
var t:Number = 0;
-
var a:Number = 100;
-
var b:Number = 10;
-
x = stage.stageWidth / 2;
-
y = stage.stageHeight / 2;
-
-
graphics.lineStyle(0,0x000000);
-
addEventListener(Event.ENTER_FRAME, onRun);
-
function onRun(evt:Event):void {
-
var p:Number = ((a + b)/b)*t
-
xp = (a + b) * Math.cos(t) - b * Math.cos(p);
-
yp = (a + b) * Math.sin(t) - b * Math.sin(p);
-
if (t == 0){
-
graphics.moveTo(xp, yp);
-
}else{
-
graphics.lineTo(xp, yp);
-
}
-
t += 0.05;
-
}
I've messed with Epicycloids in the past - browsing mathworld I decided to create this snippet. It will draw a curve like this:
Actionscript:
-
var xp:Number = 0;
-
var yp:Number = 0;
-
var t:Number = 0;
-
var a:Number = 200;
-
x = stage.stageWidth / 2;
-
y = stage.stageHeight / 2;
-
-
graphics.lineStyle(0,0x000000);
-
addEventListener(Event.ENTER_FRAME, onRun);
-
function onRun(evt:Event):void {
-
xp = a * Math.cos(t) - (a * Math.pow(Math.sin(t),2))/Math.sqrt(2);
-
yp = a * Math.cos(t) * Math.sin(t);
-
if (t == 0){
-
graphics.moveTo(xp, yp);
-
}else{
-
graphics.lineTo(xp, yp);
-
}
-
t += 0.05;
-
}
While surfing mathworld I stumbled upon the equation for something called the Fish Curve. This snippet will draw something like this:
Posted in Math, misc | Also tagged actionscript, flash |