flash on 2010-7-6
Blurry Lights Animation
Developed by Carlos Yanez
/**
* Copyright CarlosYanez ( http://wonderfl.net/user/CarlosYanez )
* MIT License ( http://www.opensource.org/licenses/mit-license.php )
* Downloaded from: http://wonderfl.net/c/sRNl
*/
/* Blurry Lights Animation */
/* Developed by Carlos Yanez */
package
{
/* Import required classes */
import flash.display.MovieClip;
import flash.filters.BitmapFilter;
import flash.filters.BlurFilter;
import flash.events.Event;
public class BlurryLights extends MovieClip
{
/* Vars */
private var lightsNumber:int;
private var xSpeed:int;
private var ySpeed:int;
private var lightsDir:String;
private var areaW:int;
private var areaH:int;
private var lights:Array = new Array();
/* Main function */
public function BlurryLights(areaWidth:int = 466, areaHeight:int = 466,numberOfLights:int = 100, lightSize:int = 10, lightColor:uint = 0x000000, minimumScale:Number = 0.5, hSpeed:int = 4, vSpeed:int = 4, dir:String = "right", quality:int = 1):void
{
/* Set variables */
areaW = areaWidth;
areaH = areaHeight;
lightsNumber = numberOfLights;
lightsDir = dir;
/* Use a for to create the parameter-specified number of lights*/
for (var i:int = 0; i < numberOfLights; i++)
{
/* Create the specified number of lights */
var light:MovieClip = new MovieClip();
/* Set random speed to x and y based on the params*/
xSpeed = Math.floor((Math.random() * (hSpeed - -hSpeed + 1)) + -hSpeed);
ySpeed = Math.round((Math.random() * vSpeed) + 0.5);
light.xSpeed = xSpeed;
light.ySpeed = ySpeed;
/* Create lights */
lightColor = Math.random() * 0xFFFFFF;
light.graphics.beginFill(lightColor);
light.graphics.drawCircle(0, 0, lightSize / 2);
light.graphics.endFill();
/* Set a position based on the params specified */
light.x = Math.floor(Math.random() * areaWidth);
light.y = Math.floor(Math.random() * areaHeight);
/* Add blur, we declare the var here to get a new blur w/every light */
var b:int = Math.floor(Math.random() * 10) + 5;
var blur:BitmapFilter = new BlurFilter(b,b,quality);
var filterArray:Array = new Array(blur);
light.filters = filterArray;
/* Change alpha */
light.alpha = Math.random() * 0.6 + 0.1;
/* Scale */
light.scaleX = Math.round(((Math.random() * (1 - minimumScale)) + minimumScale) * 100) / 100;
light.scaleY = light.scaleX;
/* Add the lights */
addChild(light);
/* Store lights in an array to use it later */
lights.push(light);
/* Check for lights direction */
checkDirection();
}
}
/* Check direction */
private function checkDirection():void
{
for (var i:int = 0; i < lights.length; i++)
{
switch ( lightsDir )
{
case "up" :
lights[i].addEventListener(Event.ENTER_FRAME, moveUp);
break;
case "down" :
lights[i].addEventListener(Event.ENTER_FRAME, moveDown);
break;
case "right" :
lights[i].addEventListener(Event.ENTER_FRAME, moveRight);
break;
case "left" :
lights[i].addEventListener(Event.ENTER_FRAME, moveLeft);
break;
default :
trace("Something weird just happened!");
}
}
}
/* Move Up function */
private function moveUp(e:Event):void
{
e.target.x += e.target.xSpeed;
e.target.y-=e.target.ySpeed;
/* Reset light position, Y first, then X */
if (e.target.y + (e.target.height / 2) < 0)
{
e.target.y = areaH + (e.target.height / 2);
e.target.x=Math.floor(Math.random()*areaW);
}
if ((e.target.x + e.target.width / 2) < 0 || (e.target.x - e.target.width / 2) > areaW)
{
e.target.y = areaH + (e.target.height / 2);
e.target.x=Math.floor(Math.random()*areaW);
}
}
/* Move Down function */
private function moveDown(e:Event):void
{
e.target.x+=e.target.xSpeed;
e.target.y+=e.target.ySpeed;
/* Reset light position, Y first, then X */
if (e.target.y - (e.target.height / 2) > areaH)
{
e.target.y = 0 - (e.target.height / 2);
e.target.x=Math.floor(Math.random()*areaW);
}
if ((e.target.x + e.target.width / 2) < 0 || (e.target.x - e.target.width / 2) > areaW)
{
e.target.y = areaH + (e.target.height / 2);
e.target.x=Math.floor(Math.random()*areaW);
}
}
/* Move Right function */
private function moveRight(e:Event):void
{
e.target.x+=e.target.ySpeed;
e.target.y+=e.target.xSpeed;
/* Reset light position, Y first, then X */
if (e.target.y - (e.target.height / 2) > areaH || e.target.y + (e.target.height / 2) < 0)
{
e.target.x = 0 - (e.target.height / 2);
e.target.y = Math.floor(Math.random()*areaH);
}
if ((e.target.x - e.target.width / 2) > areaW)
{
e.target.x = 0 - (e.target.height / 2);
e.target.y = Math.floor(Math.random()*areaW);
}
}
/* Move Left function */
private function moveLeft(e:Event):void
{
e.target.x-=e.target.ySpeed;
e.target.y-=e.target.xSpeed;
/* Reset light position, Y first, then X */
if (e.target.y - (e.target.height / 2) > areaH || e.target.y + (e.target.height / 2) < 0)
{
e.target.x = areaW + (e.target.width / 2);
e.target.y=Math.floor(Math.random()*areaH);
}
if ((e.target.x + e.target.width / 2) < 0)
{
e.target.x = areaW + (e.target.width / 2);
e.target.y=Math.floor(Math.random()*areaW);
}
}
}
}