BitmapData memory leak is AS3

programming flash
1

Hello,

I have a problem with drawing bitmapData in AS3 with an onEnterFrame action. It worked great in AS2, and now that I converted it to AS3, it’s bogging down on my system rather slowly… I’m using the dispose() method on both bitmapData instances I have, and I can only notice the slowness after about 10 minutes of playing it…

Hope somone has an insight about the issue. Here is a snippet of my code:

function enterFrameEvent(e:Event) {    
    makeKlydo();
}

function makeKlydo(){
    
    stampImage = new BitmapData(this.myElement["k"+myElementObject].width, this.myElement["k"+myElementObject].height, true, 0xFFFFFF);
    
    stampImage.draw(myElement, new Matrix(1, 0, 0, 1, this.myElement["k"+myElementObject].width/2, this.myElement["k"+myElementObject].height));
    if (deceleration<1){
        deceleration -= (deceleration-1)/5;
    }
    
    if (rotate1) {
        r += rotspeed1 * fanning * deceleration;
    }
    
    if (rotate2) {
        r2r -= rotspeed2 * fanning * deceleration;
    }
    
    if (rotate3) {
        rot += rotspeed3 * fanning;
    }
    
    map.dispose();
    map = new BitmapData(hsize, vsize, true, 0x00000000);
    mapBM = new Bitmap(map);
    mapHolder.addChild(mapBM);

    for (var i = 0; i<slices; i++) {
        m.identity();
        m.b += sh1;
        m.c += sh2;
        m.rotate(r2r);
        m.translate(myElement.width/2,myElement.height);
        m.rotate(r);
        m.scale(scl, scl);
        slice.graphics.clear();
        slice.graphics.lineStyle();
        slice.graphics.moveTo(0, 0);
        slice.graphics.beginBitmapFill(stampImage, m);
        slice.graphics.lineTo(Math.cos((angle+nudge)-Math.PI/2)*diag, Math.sin((angle+nudge)-Math.PI/2)*diag);
        slice.graphics.lineTo(Math.cos(-(angle+nudge)-Math.PI/2)*diag, Math.sin(-(angle+nudge)-Math.PI/2)*diag);
        slice.graphics.lineTo(0, 0);
        slice.graphics.endFill();
        m.identity();
        if (flip && i%2 == 1) {
            m.scale(-1, 1);
        }
        //m.rotate(rot+i*angle*2*fanning);
        m.rotate(rot+i*angle*2);
        m.translate(hsize*0.5, vsize*0.5);
        
        map.draw(slice, m, null, "normal", null, true);        
    }
        stampImage.dispose();
}

addEventListener(Event.ENTER_FRAME, enterFrameEvent);

Thanks!
itai