Example #1
0
        public _prop_SnapLtrans getAllData(double lat, double lon, double radius)
        {
            _prop_SnapLtrans     data_gis = null;
            PolylineDistanceInfo polylineDistanceInfo;
            PointD pt = new PointD();

            pt.X = lon;
            pt.Y = lat;
            if (!(sf.ShapeType == ShapeType.PolyLine || sf.ShapeType == ShapeType.PolyLineM))
            {
                return(null);
            }
            int index;

            EGIS.ShapeFileLib.ConversionFunctions.RefEllipse = 23;
            index = sf.GetClosestShape(pt, radius, out polylineDistanceInfo);
            if (index >= 0)
            {
                Console.Out.WriteLine("LineSegmentSide:" + polylineDistanceInfo.LineSegmentSide);
                if (sf.ShapeType == ShapeType.PolyLine)
                {
                    data_gis = new _prop_SnapLtrans();
                    double   total = 0;
                    PointD[] data  = sf.GetShapeDataD(index)[0];
                    for (int i = 0; i < data.Length - 1; i++)
                    {
                        total = total + ConversionFunctions.DistanceBetweenLatLongPoints(INDEX_WGS_84, data[i].Y, data[i].X, data[i + 1].Y, data[i + 1].X);
                    }

                    double distance_to_end = 0;
                    for (int i = polylineDistanceInfo.PointIndex; i < data.Length - 1; i++)
                    {
                        distance_to_end = distance_to_end + ConversionFunctions.DistanceBetweenLatLongPoints(INDEX_WGS_84, data[i].Y, data[i].X, data[i + 1].Y, data[i + 1].X);
                    }

                    double distance_snap     = ConversionFunctions.DistanceBetweenLatLongPoints(INDEX_WGS_84, lat, lon, polylineDistanceInfo.PolylinePoint.Y, polylineDistanceInfo.PolylinePoint.X);
                    string side_of_road      = GetLineSegmentSideDescription(polylineDistanceInfo.LineSegmentSide);
                    double distance_to_start = total - distance_to_end;
                    data_gis.lattitude_on_line = polylineDistanceInfo.PolylinePoint.Y;
                    data_gis.lontitude_on_line = polylineDistanceInfo.PolylinePoint.X;
                    data_gis.side_of_line      = side_of_road;
                    data_gis.snap_distance     = distance_snap;
                    data_gis.index_shape       = index;
                    data_gis.tVal = polylineDistanceInfo.TVal;
                    data_gis.calculate_length_line  = total;
                    data_gis.distance_snap_to_start = distance_to_start;
                    data_gis.distance_snap_to_end   = distance_to_end;
                    data_gis.data_db = this.dbr.GetFields(index);
                    data_gis.dt      = DbfToTable(dbr.GetFieldNames(), data_gis.data_db);
                    if (data.Length > 0)
                    {
                        data_gis.lat_start = data[0].Y;
                        data_gis.lon_start = data[0].X;
                        data_gis.lat_end   = data[data.Length - 1].Y;
                        data_gis.lon_end   = data[data.Length - 1].X;
                    }
                }
            }
            return(data_gis);
        }