Method removeAllFeatures

src/openlayers/overlay/theme/Theme.js:262–268

* @function Theme.prototype.removeAllFeatures * @description 清除当前图层所有的矢量要素。

()

     * @description 清除当前图层所有的矢量要素。
     */
    removeAllFeatures() {
        if (this.renderer) {
            this.renderer.clear();
        }
        this.features = [];
        this.dispatchEvent({type: 'featuresremoved', value: {features: [], succeed: true}});
    }

    /**
     * @function Theme.prototype.getFeatures