Method polygonToTF

src/common/overlay/ThemeVector.js:408–523

* @function FeatureThemeVector.prototype.polygonToThemeFeature * @description 转换面要素。 * @param {Geometry} geometry - 用户数据几何地理信息，这里必须是 Polygon。

(geometry)

     * @param {Geometry} geometry - 用户数据几何地理信息，这里必须是 Polygon。
     */
    polygonToTF(geometry) {
        var components = geometry.components;


        //节点像素坐标
        var localLX = [];
        //参考位置，参考中心为
        var refLocal = [];
        var location = this.location;
        var pointList = [];
        //岛洞
        var holePolygonPointList = [];
        var holePolygonPointLists = [];

        //节点抽稀距离
        var nCPx = this.nodesClipPixel;

        for (var i = 0; i < components.length; i++) {
            var components_i = components[i].components;


            if (i === 0) {
                // 第一个 component 正常绘制
                pointList = [];

                for (var j = 0; j < components_i.length; j++) {
                    refLocal = [];
                    localLX = this.getLocalXY(components_i[j]);

                    refLocal[0] = localLX[0] - location[0];
                    refLocal[1] = localLX[1] - location[1];

                    //抽稀 - 2 px
                    if (pointList.length > 0) {
                        var lastLocalXY = pointList[pointList.length - 1];
                        if ((Math.abs(lastLocalXY[0] - refLocal[0]) <= nCPx) && (Math.abs(lastLocalXY[1] - refLocal[1]) <= nCPx)) {
                            continue;
                        }
                    }

                    //使用参考点
                    pointList.push(refLocal);
                }
            } else {
                // 其它 component 作为岛洞
                holePolygonPointList = [];

                for (var k = 0; k < components_i.length; k++) {
                    refLocal = [];
                    localLX = this.getLocalXY(components_i[k]);

                    refLocal[0] = localLX[0] - location[0];
                    refLocal[1] = localLX[1] - location[1];

                    //抽稀 - 2 px
                    if (holePolygonPointList.length > 0) {
                        var lastXY = holePolygonPointList[holePolygonPointList.length - 1];
                        if ((Math.abs(lastXY[0] - refLocal[0]) <= nCPx) && (Math.abs(lastXY[1] - refLocal[1]) <= nCPx)) {