var rand:Number = Math.random() * Math.random() * Math.random();
This is a trick I use when I need more contrast in my random numbers. In this case, the variable rand will get closer to the number 1 significantly less frequently than if you just used Math.random() once.
To illustrate this I created this snippet:
[SWF(width=800, height=600)]
var r:Number = Math.random() * Math.random() * Math.random();
var inc:int = 0;
var xp:Number = 10;
var yp:Number = 10;
var count:int = 1;
var compare:Shape = Shape(addChild(new Shape()));
compare.graphics.lineStyle(0,0x2222FF);
graphics.lineStyle(0,0×00000);
scaleX = scaleY = 2;
addEventListener(Event.ENTER_FRAME, onLoop);
function onLoop(evt:Event):void {
r = Math.random() * Math.random() * Math.random();
if (inc == 0){
graphics.moveTo(xp + inc, yp + 30 – r * 30);
}else{
graphics.lineTo(xp + inc, yp + 30 – r * 30);
}
r = Math.random();
if (inc == 0){
compare.graphics.moveTo(xp + inc, yp + 70 – r * 30);
}else{
compare.graphics.lineTo(xp + inc, yp + 70 – r * 30);
}
inc++;
if (inc == 50){
inc = 0;
xp = 10 + count % 6 * 60;
yp = 10 + int(count / 6) * 80;
r = Math.random()*Math.random();
count++;
}
}
The blue lines plots normal Math.random() and the black lines plots Math.random()*Math.random()*Math.random()
This entry was posted on Tuesday, October 27th, 2009 at 7:17 am and is filed under ActionScript, Flash, Tutorials. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.
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