Question

I am loading an image using a Loader. Once loaded, I can get the bitmap data using Bitmap(event.target.loader.content).bitmapData.

However since the images I am loading are quite large (around 2000 x 1600), I would like to reduce the size and create a new smaller bitmap maybe 200 or 300 pixels wide, sort of like a thumbnail.

I think it has to do with creating a new BitmapData with the new size. However I am not able to get that working properly.

Any ideas?

Answer 1

Not tested, but this should give you an idea:

public function scaleBitmap(src: BitmapData, ratio: Number): BitmapData
{
    var bmd: BitmapData = new BitmapData(src.width * ratio, src.height * ratio);
    var m: Matrix = new Matrix();   
    m.scale(ratio, ratio);
    bmd.draw(src, m);
    return bmd;
}