egret 示例实战五：随机画圆

1.初始化赋值

1 //初始化赋值
2  this.shape = new egret.Shape();
3  this.addChild(this.shape);
4  this.drawCircle(Main.instance.stage.stageWidth/2,Main.instance.stage.stageHeight/2);

2.随机画圆

1 private drawCircle(x,y){
2    //随机画圆
3     this.shape.graphics.beginFill(0xff0000 + Math.floor(Math.random()*100)* (0xffffff / 100),1);
4     console.log('0xffffff / 100 = ' + 0xffffff / 100);
5     this.shape.graphics.lineStyle(2,0xff0000 + Math.floor(Math.random()*100)* (0xffffff / 100));
6     this.shape.graphics.drawCircle(x,y,Math.random()*50+10);
7     this.shape.graphics.endFill();
8 }

3.添加监听事件随机画圆

1 private changeGraphics(){
2    //添加监听事件画圆
3    let shape = this.shape;
4    Main.instance.stage.addEventListener(egret.TouchEvent.TOUCH_MOVE,(e:egret.TouchEvent)=>{
5       this.drawCircle(e.stageX,e.stageY);
6    },this);
7 }

4.效果