import * as turf from "@turf/turf";
const msgList = {
    label: null,
    circle: undefined,
    line: [],
    startLine: [],
    backLine: [],
    point: null,
    removeLabel() {
        if (this.label) {
            this.label.removeFromMap();
            this.label = null;
        }
        if (this.circle) {
            this.circle.removeFromMap();
            this.circle = undefined;
        }
        if (this.pathLine) {
            Viewer.entities.remove(this.pathLine);
            this.pathLine = null;
        }
        this.startLine = [];
        this.line = [];
        this.backLine = [];
    },
    setInit(item) {
        const point = item.point.split(',');
        this.point = point;
        this.label = earthCtrl.factory.createLabel({
            lon: point[0],
            lat: point[1],
            alt: 40,
            text: item.msg,
            image: config.sdkImg + 'Workers/image/mark.png',
            // 文本偏移量
            pixelOffset: new SmartEarth.Cesium.Cartesian2(0, -50),
            // 图片偏移量
            iPixelOffset: new SmartEarth.Cesium.Cartesian2(0, -20),
        });
        this.showCircle(point, '#ff0000');
        if (!item.geom.line) return;
        this.line = this.chunkArray(item.geom.line, 2);
        var center_Coord = [];

        for (var i = 0; i < this.line.length; i++) {
            center_Coord.push(turf.point([this.line[i][0], this.line[i][1]]));
            var coord_start =this.getCartesianCoord(this.line[i][0], this.line[i][1], 1);
            this.startLine.push(coord_start);
        }
        var features = turf.featureCollection(center_Coord);

        var center = turf.center(features).geometry.coordinates;

        earthCtrl.camera.flyTo(center[0], center[1], 8000, 0, -90, 0, 0);
        var backGeom = this.line.reverse();
        for (var i = 0; i < backGeom.length; i++) {
            var coord_back =this.getCartesianCoord(backGeom[i][0], backGeom[i][1], 1);
            this.backLine.push(coord_back);
        }
        // this.$nextTick(() => {
      
            this.showPathLine(this.startLine, true);
        // });
    },
    getCartesianCoord(longitude, latitude, height) {
        return Cesium.Cartesian3.fromDegrees(longitude, latitude, height);
    },
    showCircle(res, color) {
        if (this.circle) {
            this.circle.removeFromMap();
            this.circle = undefined;
        }
        this.circle = earthCtrl.factory.createCircleScan({
            lon: res[0],
            lat: res[1],
            color: SmartEarth.Cesium.Color.fromCssColorString(color),
            height: 1,
            maxRadius: 100,
            duration: 5000,
        });
    },
    chunkArray(array, size) {
        return array.reduce((chunks, current, index) => {
          const chunkIndex = Math.floor(index / size);
  
          if (!chunks[chunkIndex]) {
            chunks[chunkIndex] = [];
          }
  
          chunks[chunkIndex].push(current);
  
          return chunks;
        }, []);
      },
    showPathLine(degreesArr, boolen) {
        this.pathLine = Viewer.entities.add({
            polyline: {
                clampToGround: true,
                //轨迹线的分布位置
                positions: degreesArr,
                material: new Cesium.ImageMaterialProperty({
                    //图片的颜色
                    //轨迹运行的速率
                    speed: 10,
                    //随意一张图片
                    image: config.images + '向右.png',
                    //将轨迹分成一行50个图片
                    repeat: { x: 40, y: 1 },
                }),
                width: 20,
            },
        });
    },
};
export default msgList;