ts 绘制多边形

    let bg = this.createBitmapByName("123_png");
    this.addChild(bg)
    bg.x = this.stage.width / 2
    bg.y = this.stage.height / 2
    bg.anchorOffsetX = bg.width / 2
    bg.anchorOffsetY = bg.height / 2
    let infoList = [5, 2, 7, 9, 4, 1]
    let list = this.getPolyPoint(infoList, bg)
 
    var shp: egret.Shape = new egret.Shape();
    shp.graphics.lineStyle(2, 0x00ff00);
    shp.graphics.beginFill(0xff0000, 1)
 
    for (let i in list) {
        if (Number(i) == 0)
            shp.graphics.moveTo(list[i].x, list[i].y);
        else
            shp.graphics.lineTo(list[i].x, list[i].y);
    }
 
    shp.graphics.endFill();
    this.addChild(shp)
 
    for (let i in list) {
        var circle:egret.Shape = new egret.Shape();
        circle.graphics.beginFill( 0x00ff00, 1);
        circle.graphics.drawCircle( list[i].x, list[i].y, 5);
        circle.graphics.endFill();
        this.addChild(circle);
    }
 
public getPolyPoint(infoList, item){
        let list = []
 
        let x = this.stage.width / 2
        let y = this.stage.height / 2
 
        for (let i = 1; i <= 7; i++) {
            let info = infoList[i - 1]
            if (info == undefined)
                info = infoList[0]
 
            let point = new egret.Point
            let w = item.width / 2 * (info * 0.1)
            let h = item.height / 2 * (info * 0.1)
            let w1 = w / 2
 
            switch (i) {
                case 2:
                    point.x = x + w1
                    point.y = y - h
                    break
                case 3:
                    point.x = x + w
                    point.y = y
                    break
                case 4:
                    point.x = x + w1
                    point.y = y + h
                    break
                case 5:
                    point.x = x - w1
                    point.y = y + h
                    break
                case 6:
                    point.x = x - w
                    point.y = y
                    break
                default:
                    point.x = x - w1
                    point.y = y - h
                    break
            }
 
            list.push(point)
        }
 
        return list
    }