Fade In & Out with Haxe & OpenFL

Question

I am using a For Statement clock with Haxe and OpenFL, to create a Fade In & Fade Out effect for a Bitmap object (using alpha property). Do you have use other methods for that? I am using a For statement instead of Sys.sleep(0.2); because it makes a "Loading" cursor icon and the program gets stuck. The bitmap is called bmp and the timer is tmrSplash.

Source:

tmrSplash.run = function changeAlpha(): Void {
    var f: Float = 1;
    while (f <= 1 && f >= 0) {
        bmp.alpha = f;
        var a: Int = 0;
        while (a < 500000000) {
            a++;
            if (a >= 500000000) {
                a = 0;
            }
            f -= 0.0005;
            trace(f);
        }
        tmrSplash.stop();

    }
}

Thank you.

Mark Knol Mark Knol · Accepted Answer · 2015-02-18T18:03:38

In order to fade out manually, you'll need to listen to the ENTER_FRAME event on the stage and change the value over time, instead of creating this infinite loop.

But I would suggest to take a look into a tween engine, like Actuate, which simplifies the syntax. You dont want to create something like this yourself, just use a library to animate properties. https://github.com/openfl/actuate

Actuate.tween (mySprite, 1, { alpha: 0 }); // fade out

Life is too short to invent another tween engine, dont waste your time on building such.

Fade In & Out with Haxe & OpenFL

1 Answers