Method swapExtrema

src/common/overlay/levelRenderer/Area.js:676–680

* @function LevelRenderer.Tool.Areal.prototype.swapExtrema

()

     * @function LevelRenderer.Tool.Areal.prototype.swapExtrema
     */
    swapExtrema() {
        var tmp = this.extrema[0];
        this.extrema[0] = this.extrema[1];
        this.extrema[1] = tmp;
    }

    /**
     * @function LevelRenderer.Tool.Areal.prototype.windingCubic