Many people have created trails using BitmapData so today I actually learned how to do it. This is really fun stuff!
[as]import mx.transitions.easing.*;
import mx.transitions.Tween;
import flash.display.BitmapData;
import flash.filters.*;
import flash.geom.ColorTransform;
var bmd:BitmapData = new BitmapData(600,400,true,0×00000000);
this.createEmptyMovieClip(“bmdc”,1);
this.createEmptyMovieClip(“ballc”,2);
ballc.attachMovie(“ball”,”ball”,0);
var bf:BlurFilter = new BlurFilter(5,5,1);
var gf:GlowFilter = new GlowFilter(0x0099CC,30,35,35,1,1,false,false);
bmdc.filters = [bf,gf];
var ct:ColorTransform = new ColorTransform(.5,.9,.2,.99,1,1,.7,.99);
bmdc.attachBitmap(bmd,0);
function moveIt(who) {
var tw:Tween = new Tween(who,”_x”,Normal.easeOut,who._x,Math.random()*Stage.width,2,true);
var tw2:Tween = new Tween(who,”_y”,Normal.easeOut,who._y,Math.random()*Stage.height,2,true);
var tw3:Tween = new Tween(who,”_rotation”,Normal.easeOut,who._rotation,Math.random()*720,2,true);
tw.onMotionStopped = function() {
moveIt(who);
}
}
this.onEnterFrame = function() {
bmd.draw(ballc);
bmd.colorTransform(bmd.rectangle,ct);
}
moveIt(ballc.ball);
[/as]
Lee
Sweet!
Very nice, and less than 3K, excellent! I take it the star shape is a vector drawn in Flash for the Bitmap Class to manipulate?
Yeah the star is just a simple vector shape created with the polygon tool
Thanks for sharing this piece of code, it saved me some time. Nice job
GOOD very beautiful ~~~~~~
Here’s a AS3 version of this example
…
import flash.display.Bitmap;
import flash.display.MovieClip;
import flash.display.BitmapData;
import flash.events.Event;
import flash.filters.*;
import flash.geom.ColorTransform;
import caurina.transitions.Tweener;
var bmd:BitmapData = new BitmapData(580, 360, true, 0×00);
var bmdc:Bitmap = new Bitmap(bmd);
addChild(bmdc);
var ballc:MovieClip = new MovieClip();
addChild(ballc);
var ball:MovieClip = new MovieClip();
ball.graphics.lineStyle(2, 0xFFFFFF, 1, true, “normal”);
ball.graphics.drawCircle(0, 0, 20);
ball.graphics.endFill();
ballc.addChild(ball);
var bf:BlurFilter = new BlurFilter(5,5,1);
var gf:GlowFilter = new GlowFilter(0x0099CC,30,35,35,1,1,false,false);
bmdc.filters = [bf,gf];
var ct:ColorTransform = new ColorTransform(.5,.9,.2,.99,1,1,.7,.99);
function moveIt() {
Tweener.addTween(ball, { time:2, rotation:Math.random()*720, x:Math.random() * stage.stageWidth, y:Math.random() * stage.stageHeight, transition:”easeInSine”, onComplete:moveIt } );
}
function frame(e:Event):void
{
bmd.draw(this);
bmd.colorTransform(bmd.rect,ct);
}
addEventListener(Event.ENTER_FRAME, frame);
moveIt();
i cant get it to work, i replaced all of the \ with \ because it didnt work with the ones posted for some reason. i also made an mc with an export of ball cuz i saw that u placed one in the code. but i get an error:
‘)’ or ‘,’ expected
sorry it cut off, on lines
var bmd:BitmapData = new BitmapData(600,400,true,0×000000);
and
var gf:GlowFilter = new GlowFilter(0×0099CC,30,35,35,1,1,false,false);
sorry for all the comments but there was really no error, i retyped the code exactly as it was and it worked haha
is there a way to make this work in a motion tween?
Thank you so much for this, Lee! I’ve been searching the webs for over an hour, and this is exactly what I was looking for!
PS, guk: Code needs a MC to be created, with “ball” as its “Export for actionscript” property. I also had to replace smart quotes with dumb quotes, and re-type line 7 and 14. It must be a character type issue.