十一月's profileNOVEMBREBlogListsGuestbookMore Tools Help

Blog


    December 11

    用AS消除位图锯齿

    通过AS动态载入的图片在缩放的时候出现模糊和锯齿,由于这些位图是通过AS从外部载入进来的,不能在Flash制作时通过修改库里图片的属性来消除锯齿。外部加载的通过bitmap来进行解决,主要用到MovieClip.attachBitmap中的一个smooth参数的设置,来进行平滑处理。代码如下:

    /*****进行消锯齿与不消锯齿的对比*****/
    import flash.display.BitmapData;
    /*************加载******************/
    var container1:MovieClip = createEmptyMovieClip("container1", getNextHighestDepth());
    var container2:MovieClip = createEmptyMovieClip("container2", getNextHighestDepth());
    var loader1:MovieClipLoader = new MovieClipLoader();
    var loader2:MovieClipLoader = new MovieClipLoader();
    var obj:Object = new Object();
    obj.onLoadInit = function(target:MovieClip) {
        trace("onLoadInit");
        loaderDispose(target);
    };
    loader1.addListener(obj);
    loader1.loadClip("1.jpg", container1);
    loader2.addListener(obj);
    loader2.loadClip("1.jpg", container2);

    /**********图片处理***************/
    var bitmapLoader1:MovieClip = createEmptyMovieClip("Bloader1", getNextHighestDepth());
    var bitmapLoader2:MovieClip = createEmptyMovieClip("Bloader2", getNextHighestDepth());
    var bitmap1:BitmapData;
    var bitmap2:BitmapData;
    function loaderDispose(mc:MovieClip) {
        mc._visible = false;
        /*******不平滑*******/
        if (mc._name == "container1") {
            bitmap1 = new BitmapData(mc._width, mc._height, true, 0x00FFFFFF);
            bitmap1.draw(mc);
            bitmapLoader1.attachBitmap(bitmap1, 0);
            bitmapLoader1._x = 0;
            bitmapLoader1._xscale = bitmapLoader1._yscale=250;
        } else {
        /******平滑处理*******/
            bitmap2 = new BitmapData(mc._width, mc._height, true, 0x00FFFFFF);
            bitmap2.draw(mc);
            bitmapLoader2.attachBitmap(bitmap2, 1, "auto", true);
            //主要就是这个smooth参数,true表示平滑
            bitmapLoader1._x = 0;
            bitmapLoader2._x = 320;
            bitmapLoader2._xscale = bitmapLoader2._yscale=250;
        }
    }

    效果如图:

    1