利用FP8新功能getPixel做雪花(二)

stop();

//初始生成20个雪花,可以自定义数量
for (i=1; i<20; i++) {
snow_mc.duplicateMovieClip("snow"+i+"_mc", i);
eval("snow"+i+"_mc")._x = random(520)+10;
eval("snow"+i+"_mc")._y = random(390)+20;
}
_global.i = 30;

//雪花生成 方法
function createSnow() {
_global.i++;
var i = _global.i;
snow_mc.duplicateMovieClip("snow"+i+"_mc", i);
eval("snow"+i+"_mc")._alpha = 100;
eval("snow"+i+"_mc")._xscale = random(50)+50;
eval("snow"+i+"_mc")._yscale = eval("snow"+i+"_mc")._xscale;
eval("snow"+i+"_mc")._x = random(520)+10;
eval("snow"+i+"_mc")._y = random(390)+20;
eval("snow"+i+"_mc").i = i;
}

//雪花计数 方法,每一秒会调用dis方法进行计数
function createCount(mc:MovieClip) {
mc.count = 0;
mc.interval = setInterval(dis, 1000, mc);
}

//计数 方法,若计数到60会调用undisplay方法
function dis(mc:MovieClip) {
mc.count++;
if (mc.count == 60) {
clearInterval(mc.interval);
delete mc.interval;
undisplay(mc);
}
}

//删除雪花 方法,删除计数超时的雪花,节省资源
function undisplay(my_mc:MovieClip) {
my_mc.createEmptyMovieClip("tmp_mc", my_mc.getNextHighestDepth());
my_mc.tmp_mc.onEnterFrame = function() {
my_mc._alpha -= 10;
if (my_mc._alpha<=0) {
delete my_mc.tmp_mc.onEnterFrame;
my_mc.removeMovieClip();
}
};
}
// --------------------------------------------

//创建位图

var img_bmp = new flash.display.BitmapData(520, 390, true);

//装载要处理的背景图片
_level0.img_bmp.draw(_level0.bg_mc);

//影片所在位置的背景颜色值获取方法
function getMouseColor(mc:MovieClip) {
var xx = mc._x;
var yy = mc._y;

//调用系统方法getPixel,获取颜色值,并返回值

return img_bmp.getPixel(xx, yy);


}
stop();