/// <summary> /// Encodes a point along line location. /// </summary> public static byte[] Encode(PointAlongLineLocation location) { var data = new byte[17]; var header = new Header(); header.Version = 3; header.HasAttributes = true; header.ArF0 = false; header.IsPoint = true; header.ArF1 = false; HeaderConvertor.Encode(data, 0, header); CoordinateConverter.Encode(location.First.Coordinate, data, 1); FunctionalRoadClassConvertor.Encode(location.First.FuntionalRoadClass.Value, data, 7, 2); FormOfWayConvertor.Encode(location.First.FormOfWay.Value, data, 7, 5); FunctionalRoadClassConvertor.Encode(location.First.LowestFunctionalRoadClassToNext.Value, data, 8, 0); BearingConvertor.Encode(BearingConvertor.EncodeAngleToBearing(location.First.Bearing.Value), data, 8, 3); data[9] = DistanceToNextConvertor.Encode(location.First.DistanceToNext); CoordinateConverter.EncodeRelative(location.First.Coordinate, location.Last.Coordinate, data, 10); FunctionalRoadClassConvertor.Encode(location.Last.FuntionalRoadClass.Value, data, 14, 2); FormOfWayConvertor.Encode(location.Last.FormOfWay.Value, data, 14, 5); BearingConvertor.Encode(BearingConvertor.EncodeAngleToBearing(location.Last.Bearing.Value), data, 15, 3); OrientationConverter.Encode(location.Orientation.Value, data, 7, 0); SideOfRoadConverter.Encode(location.SideOfRoad.Value, data, 14, 0); if (location.PositiveOffsetPercentage.HasValue) { // positive offset percentage is present. OffsetConvertor.Encode(location.PositiveOffsetPercentage.Value, data, 16); } return(data); }
public void TestEncoding1() { Assert.AreEqual(0, DistanceToNextConvertor.Encode(0)); Assert.AreEqual(127, DistanceToNextConvertor.Encode((int)(15000 / 2))); Assert.AreEqual(255, DistanceToNextConvertor.Encode((int)(14999))); }
/// <summary> /// Encodes a point along line location. /// </summary> /// <param name="location"></param> /// <returns></returns> protected override byte[] EncodeByteArray(LineLocation location) { int size = 18; if (location.Intermediate != null) { // each intermediate adds 7 bytes. size = size + (location.Intermediate.Length * 7); } byte[] data = new byte[size]; var header = new Header(); header.Version = 3; header.HasAttributes = true; header.ArF0 = false; header.IsPoint = false; header.ArF1 = false; HeaderConvertor.Encode(data, 0, header); CoordinateConverter.Encode(location.First.Coordinate, data, 1); FunctionalRoadClassConvertor.Encode(location.First.FuntionalRoadClass.Value, data, 7, 2); FormOfWayConvertor.Encode(location.First.FormOfWay.Value, data, 7, 5); FunctionalRoadClassConvertor.Encode(location.First.LowestFunctionalRoadClassToNext.Value, data, 8, 0); BearingConvertor.Encode(BearingConvertor.EncodeAngleToBearing(location.First.Bearing.Value), data, 8, 3); data[9] = DistanceToNextConvertor.Encode(location.First.DistanceToNext); // calculate the intermediate points count. var position = 10; var reference = location.First.Coordinate; if (location.Intermediate != null) { for (int idx = 0; idx < location.Intermediate.Length; idx++) { // create an intermediate point. var intermediate = location.Intermediate[idx]; CoordinateConverter.EncodeRelative(location.First.Coordinate, intermediate.Coordinate, data, position); reference = intermediate.Coordinate; position = position + 4; FunctionalRoadClassConvertor.Encode(intermediate.FuntionalRoadClass.Value, data, position, 2); FormOfWayConvertor.Encode(intermediate.FormOfWay.Value, data, position, 5); position = position + 1; BearingConvertor.Encode(BearingConvertor.EncodeAngleToBearing(intermediate.Bearing.Value), data, position, 3); FunctionalRoadClassConvertor.Encode(intermediate.LowestFunctionalRoadClassToNext.Value, data, position, 0); position = position + 1; data[position] = DistanceToNextConvertor.Encode(intermediate.DistanceToNext); position = position + 1; } } CoordinateConverter.EncodeRelative(reference, location.Last.Coordinate, data, position); FunctionalRoadClassConvertor.Encode(location.Last.FuntionalRoadClass.Value, data, position + 4, 2); FormOfWayConvertor.Encode(location.Last.FormOfWay.Value, data, position + 4, 5); BearingConvertor.Encode(BearingConvertor.EncodeAngleToBearing(location.Last.Bearing.Value), data, position + 5, 3); if (location.PositiveOffsetPercentage.HasValue) { // positive offset percentage is present. OffsetConvertor.EncodeFlag(true, data, position + 5, 1); OffsetConvertor.Encode(location.PositiveOffsetPercentage.Value, data, position + 6); } if (location.NegativeOffsetPercentage.HasValue) { // positive offset percentage is present. OffsetConvertor.EncodeFlag(true, data, position + 5, 2); OffsetConvertor.Encode(location.NegativeOffsetPercentage.Value, data, position + 7); } return(data); }