Method drawCharts

src/openlayers/overlay/Graph.js:180–282

* @function Graph.prototype.drawCharts * @description 绘制图表。包含压盖处理。 *

()

     *
     */
    drawCharts() {
        // 判断 rendere r就绪
        if (!this.renderer) {
            return;
        }
        var charts = this.charts;
        // 图表权重值处理
        if (this.overlayWeightField) {
            charts.sort(function (cs, ce) {
                if (typeof (cs["__overlayWeight"]) == "undefined" && typeof (ce["__overlayWeight"]) == "undefined") {
                    return 0;
                } else if (typeof (cs["__overlayWeight"]) != "undefined" && typeof (ce["__overlayWeight"]) == "undefined") {
                    return -1;
                } else if (typeof (cs["__overlayWeight"]) == "undefined" && typeof (ce["__overlayWeight"]) != "undefined") {
                    return 1;
                } else if (typeof (cs["__overlayWeight"]) != "undefined" && typeof (ce["__overlayWeight"]) != "undefined") {
                    if (parseFloat(cs["__overlayWeight"]) < parseFloat(ce["__overlayWeight"])) {
                        return 1;
                    } else {
                        return -1;
                    }
                }
                return 0;
            });
        }
        // 不进行避让
        if (!this.isOverLay) {
            for (var m = 0, len_m = charts.length; m < len_m; m++) {
                var chart_m = charts[m];
                // 图形参考位置  (reSetLocation 会更新 chartBounds)
                var shapeROP_m = chart_m.resetLocation();
                // 添加图形
                var shapes_m = chart_m.shapes;
                for (var n = 0, slen_n = shapes_m.length; n < slen_n; n++) {
                    shapes_m[n].refOriginalPosition = shapeROP_m;
                    this.renderer.addShape(shapes_m[n]);
                }
            }
        } else {
            // 压盖判断所需 chartsBounds 集合
            var chartsBounds = [];
            var extent = this.map.getView().calculateExtent();
            var mapBounds = new Bounds(extent[0], extent[1], extent[2], extent[3]);
            // 获取地图像素 bounds
            var mapPxLT = this.getLocalXY(new LonLat(mapBounds.left, mapBounds.top));
            var mapPxRB = this.getLocalXY(new LonLat(mapBounds.right, mapBounds.bottom));
            var mBounds = new Bounds(mapPxLT[0], mapPxRB[1], mapPxRB[0], mapPxLT[1]);
            // 压盖处理 & 添加图形
            for (var i = 0, len = charts.length; i < len; i++) {
                var chart = charts[i];
                // 图形参考位置  (reSetLocation 会更新 chartBounds)
                var shapeROP = chart.resetLocation();
                // 图表框
                var cbs = chart.chartBounds;
                var cBounds = [{
                    "x": cbs.left,
                    "y": cbs.top
                }, {