Method assembleShapes

src/common/overlay/Pie.js:78–187

* @function FeatureThemePie.prototype.assembleShapes * @description 装配图形（扩展接口）。

()

     * @description 装配图形（扩展接口）。
     */
    assembleShapes() {
        // 图表配置对象
        var sets = this.setting;

        // 一个默认 style 组
        var defaultStyleGroup = [
            {fillColor: "#ff9277"}, {fillColor: "#dddd00"}, {fillColor: "#ffc877"}, {fillColor: "#bbe3ff"}, {fillColor: "#d5ffbb"},
            {fillColor: "#bbbbff"}, {fillColor: "#ddb000"}, {fillColor: "#b0dd00"}, {fillColor: "#e2bbff"}, {fillColor: "#ffbbe3"},
            {fillColor: "#ff7777"}, {fillColor: "#ff9900"}, {fillColor: "#83dd00"}, {fillColor: "#77e3ff"}, {fillColor: "#778fff"},
            {fillColor: "#c877ff"}, {fillColor: "#ff77ab"}, {fillColor: "#ff6600"}, {fillColor: "#aa8800"}, {fillColor: "#77c7ff"},
            {fillColor: "#ad77ff"}, {fillColor: "#ff77ff"}, {fillColor: "#dd0083"}, {fillColor: "#777700"}, {fillColor: "#00aa00"},
            {fillColor: "#0088aa"}, {fillColor: "#8400dd"}, {fillColor: "#aa0088"}, {fillColor: "#dd0000"}, {fillColor: "#772e00"}
        ];

        // 重要步骤：初始化参数
        if (!this.initBaseParameter()) {
            return;
        }

        // 背景框，默认不启用
        if (sets.useBackground) {
            this.shapes.push(ShapeFactory.Background(this.shapeFactory, this.chartBox, sets));
        }

        // 数据值数组
        var fv = this.dataValues;
        if (fv.length < 1) {
            return;
        }       // 没有数据

        // 值域范围
        var codomain = this.DVBCodomain;
        // 值域范围检测
        for (let i = 0; i < fv.length; i++) {
            if (fv[i] < codomain[0] || fv[i] > codomain[1]) {
                return;
            }
        }

        // 值的绝对值总和
        var valueSum = 0;
        for (let i = 0; i < fv.length; i++) {
            valueSum += Math.abs(fv[i]);
        }

        // 重要步骤：定义图表 FeatureThemePie 数据视图框中单位值的含义，单位值：每度代表的数值
        this.DVBUnitValue = 360 / valueSum;
        var uv = this.DVBUnitValue;

        var dvbCenter = this.DVBCenterPoint;        // 数据视图框中心作为扇心

        var startAngle = 0;         // 扇形起始边角度
        var endAngle = 0;          // 扇形终止边角度
        var startAngleTmp = startAngle;           // 扇形临时起始边角度
        // 扇形（自适应）半径
        var r = this.DVBHeight < this.DVBWidth ? this.DVBHeight / 2 : this.DVBWidth / 2;

        for (var i = 0; i < fv.length; i++) {