Draws pixels from source onto this object.
Unlike copyPixels, the target location is not erased first. That means pixels on this
BitmapData may be visible if pixels from source are transparent. Select a blendMode
to customize how two pixels are blended.
Source
void drawPixels(BitmapData source, Rectangle<num> sourceRect, Point<num> destPoint, [BlendMode blendMode]) {
var updateBatch = new BitmapDataUpdateBatch(this);
updateBatch.drawPixels(source, sourceRect, destPoint, blendMode);
updateBatch.update();
}