function onDragStart(event){ this.data = event.data; var dianjix = this.data.global.x; var dianjiy = this.data.global.y; console.log('dianjix:'+dianjix); console.log('dianjiy:'+dianjiy); var appAllChildren = app.stage.children var acNum = appAllChildren.length for (var i = 0; i < acNum; i++) { if(appAllChildren[i].isSprite){ var baoweihe=appAllChildren[i].getBounds(); console.log(baoweihe); var isdianji = isCollsion(dianjix, dianjiy, baoweihe.x, baoweihe.y, baoweihe.width, baoweihe.height); if(isdianji){ //获取点击的像素是不是透明的 var touchinx=parseInt(dianjix-baoweihe.x); var touchiny=parseInt(dianjiy-baoweihe.y); var xiangsucount=(touchinx+1)*(touchiny+1); //注意这个输出的像素是按照原来图片本身的大小来的 var ss=app.renderer.extract.pixels(appAllChildren[i]); console.log(ss); var xiangsuindex=(xiangsucount-1)*4+3; // var xiangsutouming=ss[xiangsutouming]; // alert(xiangsutouming); } } } }
ps:
app.renderer.extract.pixels 这个参数 一定要写画布 或者精灵渲染的画布(离屏渲染)