public MeasureDistance(Map map, ElementsLayer elementsLayer, FeaturesLayer featuresLayer, bool isMeasure)
{
_map = map;
_eLayer = elementsLayer;
_fLayer = featuresLayer;
_isInited = false;
_distanceList = new List<Border>();
_points = new Point2DCollection();
_distances = new List<double>();
_isMeasure = isMeasure;
}