How to create a circular animation in As3, useful for preloaders
(tested on Flash Cs3/4 but it should works fine in Flex too)
(tested on Flash Cs3/4 but it should works fine in Flex too)
var angle:Number = 0
var centerX:Number = 50
var centerY:Number = 50;
var radius:Number = 22;
var speed:Number = 0.1
var circle:Shape = new Shape();
addChild(circle)
circle.graphics.beginFill(0x00FF00);
circle.graphics.moveTo(centerX, centerY);
function onEnterFrame(e:Event) {
if (angle > 2 * Math.PI)
this.removeEventListener(Event.ENTER_FRAME, onEnterFrame)
trace("angle", angle)
circle.graphics.lineTo(centerX + Math.cos(angle) * radius,
centerY + Math.sin(angle) * radius);
angle += speed;
}
this.addEventListener(Event.ENTER_FRAME, onEnterFrame)