By Zevan | February 23, 2009
Actionscript:
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g=graphics;
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mt=g.moveTo;
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lt=g.lineTo;
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ls=g.lineStyle;
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m=Math;
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r=m.random;
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s=m.sin;
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i=0;
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o={};
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function f(e){
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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;
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}
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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 | Also tagged actionscript |
By Zevan | February 23, 2009
Actionscript:
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var clock:Sprite = Sprite(addChild(new Sprite()));
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clock.x = clock.y = 150;
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var bg:Shape = Shape(clock.addChild(new Shape()));
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with (bg.graphics) lineStyle(2, 0x666666), beginFill(0xEFEFEF), drawCircle(0,0,110);
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var hHand:Shape = clockHand(6, 50);
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var mHand:Shape = clockHand(2, 80);
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var sHand:Shape = clockHand(1, 90);
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var center:Shape = Shape(clock.addChild(new Shape()));
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with (center.graphics) beginFill(0x000000), drawCircle(0,0,5);
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var hInc:Number = 360/24;
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var msInc:Number = 360/60 ;
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var nOff:Number = 6;
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var verdana:TextFormat = new TextFormat("Verdana", 8);
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// add numbers to clock
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for (var i:int = 0; i<24; i++){
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var ang:Number = (i * hInc - 90) * Math.PI/180;
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createNumber(70,ang, i.toString());
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var ms:Number = i * 2.5;
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if (ms % 5 == 0){
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createNumber(95, ang, ms.toString());
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}
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}
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addEventListener(Event.ENTER_FRAME, onLoop);
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function onLoop(evt:Event):void {
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var date:Date = new Date();
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hHand.rotation = hInc * date.getHours();
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mHand.rotation = msInc * date.getMinutes();
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sHand.rotation = msInc * date.getSeconds();
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}
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function clockHand(thickness:Number, leng:Number):Shape{
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var hand:Shape = Shape(clock.addChild(new Shape()));
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with (hand.graphics) {
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lineStyle(thickness, 0x000000, 1, true, LineScaleMode.NORMAL, CapsStyle.SQUARE);
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lineTo(0,-leng);
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}
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return hand;
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}
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function createNumber(radius:Number, theta:Number, str:String):void{
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var t:TextField = TextField(clock.addChild(new TextField()));
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with (t) defaultTextFormat = verdana, t.autoSize = "left";
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t.text = str;
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t.x = radius * Math.cos(theta) - nOff;
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t.y = radius* Math.sin(theta) - nOff;
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}
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 | Also tagged actionscript |
By Zevan | February 22, 2009
Actionscript:
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addChild(new TextField());
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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:
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addChild(new TextField());
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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 | Also tagged actionscript |
By Zevan | February 21, 2009
Actionscript:
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[SWF(width = 600, height = 400)]
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// draw the same grid as yesterday
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var tileSize:int = 40;
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var cols:int = stage.stageWidth / tileSize;
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var rows:int = stage.stageHeight / tileSize;
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var grid:Sprite = Sprite(addChild(new Sprite()));
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grid.graphics.lineStyle(0,0x000000);
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var i:int = 0;
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for (i = 1; i<cols; i++){
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var posX:Number = i * tileSize
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grid.graphics.moveTo(posX, 0);
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grid.graphics.lineTo(posX, stage.stageHeight);
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}
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for (i = 1; i<rows; i++){
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var posY:Number = i * tileSize
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grid.graphics.moveTo(0, posY);
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grid.graphics.lineTo(stage.stageWidth, posY);
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}
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//
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// -- add a circle that snaps to the grid when dragged
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//
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var circle:Sprite = Sprite(addChild(new Sprite()));
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with (circle.graphics) beginFill(0xFF0000), drawCircle(0,0,10);
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circle.x = circle.y = tileSize * 3;
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circle.buttonMode = true;
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circle.addEventListener(MouseEvent.MOUSE_DOWN, onDown);
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function onDown(evt:MouseEvent):void {
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addEventListener(Event.ENTER_FRAME, onRunSnapping);
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}
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function onRunSnapping(evt:Event):void {
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circle.x = Math.round(mouseX / tileSize) * tileSize;
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circle.y = Math.round(mouseY / tileSize) * tileSize;
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}
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stage.addEventListener(MouseEvent.MOUSE_UP, onUp);
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function onUp(evt:MouseEvent):void {
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removeEventListener(Event.ENTER_FRAME, onRunSnapping);
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}
This builds on yesterdays post by adding a draggable red circle that snaps to the grid. This is the real trick:
Actionscript:
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circle.x = Math.round(mouseX / tileSize) * tileSize;
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circle.y = Math.round(mouseY / tileSize) * tileSize;
Posted in Graphics, UI, motion | Also tagged actionscript |