/// <summary>
/// Calculates the relative direction.
/// </summary>
/// <param name="from"></param>
/// <param name="along"></param>
/// <param name="to"></param>
/// <returns></returns>
public static RelativeDirection Calculate(GeoCoordinate from, GeoCoordinate along, GeoCoordinate to)
{
RelativeDirection direction = new RelativeDirection();
double margin = 65;
double straight_on = 10;
double turn_back = 5;
GeoCoordinateLine line_from = new GeoCoordinateLine(from, along);
GeoCoordinateLine line_to = new GeoCoordinateLine(along, to);
Degree angle = line_from.Direction.Angle(line_to.Direction);
if (angle >= new Degree(360 - straight_on)
|| angle < new Degree(straight_on))
{
direction.Direction = RelativeDirectionEnum.StraightOn;
}
else if (angle >= new Degree(straight_on)
&& angle < new Degree(90 - margin))
{
direction.Direction = RelativeDirectionEnum.SlightlyLeft;
}
else if (angle >= new Degree(90 - margin)
&& angle < new Degree(90 + margin))
{
direction.Direction = RelativeDirectionEnum.Left;
}
else if (angle >= new Degree(90 + margin)
&& angle < new Degree(180 - turn_back))
{
direction.Direction = RelativeDirectionEnum.SharpLeft;
}
else if (angle >= new Degree(180 - turn_back)
&& angle < new Degree(180 + turn_back))
{
direction.Direction = RelativeDirectionEnum.TurnBack;
}
else if (angle >= new Degree(180 + turn_back)
&& angle < new Degree(270-margin))
{
direction.Direction = RelativeDirectionEnum.SharpRight;
}
else if (angle >= new Degree(270 - margin)
&& angle < new Degree(270 + margin))
{
direction.Direction = RelativeDirectionEnum.Right;
}
else if (angle >= new Degree(270 + margin)
&& angle < new Degree(360- straight_on))
{
direction.Direction = RelativeDirectionEnum.SlightlyRight;
}
//direction.Direction = RelativeDirectionEnum.StraightOn;
direction.Angle = angle;
return direction;
}
/// <summary>
/// Generates an immidiate turn.
/// </summary>
/// <param name="instruction"></param>
/// <param name="firstStreetCountTo"></param>
/// <param name="firstStreetTo"></param>
/// <param name="firstDirection"></param>
/// <param name="secondStreetTo"></param>
/// <param name="secondDirection"></param>
/// <returns></returns>
public Instruction GenerateImmidiateTurn(Instruction instruction,
int firstStreetCountTo,
List<KeyValuePair<string, string>> firstStreetTo,
OsmSharp.Tools.Math.Geo.Meta.RelativeDirection firstDirection,
List<KeyValuePair<string, string>> secondStreetTo,
RelativeDirection secondDirection)
{
instruction.Text = string.Format("GenerateImmidiateTurn:{0}_{1}_{2}_{3}",
firstStreetCountTo, firstDirection,
firstDirection.ToString(),
secondDirection.ToString());
return instruction;
}
internal void GenerateImmidiateTurn(GeoCoordinateBox box,
List<KeyValuePair<string, string>> before_name, RelativeDirection first_direction, int first_street_count_to,
RelativeDirection second_direction, List<KeyValuePair<string, string>> first_street_to, List<KeyValuePair<string, string>> second_street_to, List<PointPoi> list)
{
// create a new instruction first.
Instruction instruction = new Instruction(box);
// pass the instruction to the language generator.
instruction = _generator.GenerateImmidiateTurn(
instruction, first_street_count_to, first_street_to, first_direction, second_street_to, second_direction);
// add the instruction to the instructions list.
_instructions.Add(instruction);
}
/// <summary>
/// Generates an instruction for an immidiate turn.
/// </summary>
/// <param name="instruction"></param>
/// <param name="firstStreetCountTo"></param>
/// <param name="firstStreetTo"></param>
/// <param name="firstDirection"></param>
/// <param name="secondStreetTo"></param>
/// <param name="secondDirection"></param>
/// <returns></returns>
public Instruction GenerateImmidiateTurn(Instruction instruction, int firstStreetCountTo, List<KeyValuePair<string, string>> firstStreetTo,
RelativeDirection firstDirection, List<KeyValuePair<string, string>> secondStreetTo, RelativeDirection secondDirection)
{
if (firstStreetCountTo == 1)
{
instruction.Text = string.Format("Neem de 1ste afslag {0}, de {1} op, en ga onmiddellijk {2} op de {3}.",
TurnDirection(firstDirection.Direction),
this.GetName("nl", firstStreetTo),
TurnDirection(secondDirection.Direction),
this.GetName("nl", secondStreetTo));
}
else
{
instruction.Text = string.Format("Neem de {4}de afslag {0}, de {1} op, en ga onmiddellijk {2} op de {3}.",
TurnDirection(firstDirection.Direction),
this.GetName("nl", firstStreetTo),
TurnDirection(secondDirection.Direction),
this.GetName("nl", secondStreetTo),
firstStreetCountTo);
}
// returns the instruction with text.
return instruction;
}
internal void GeneratePoi(GeoCoordinateBox box,
List<PointPoi> list,
RelativeDirection direction)
{
// create a new instruction first.
Instruction instruction = new Instruction(box, list);
Instruction direction_instruction = null;
// pass the instruction to the languate generator.
if (direction == null)
{
instruction = _generator.GeneratePoi(instruction, list, null);
}
else
{
// create a direction instruction.
if (direction.Direction == RelativeDirectionEnum.TurnBack)
{
direction_instruction = new Instruction(box, list);
direction_instruction = _generator.GenerateSimpleTurn(direction_instruction, direction.Direction);
}
// generates the instructions.
instruction = _generator.GeneratePoi(instruction, list, null);
}
// add the instruction to the instructions list.
_instructions.Add(instruction);
// add the direction instruction.
if (direction_instruction != null)
{
_instructions.Add(direction_instruction);
}
}
internal void GenerateTurn(GeoCoordinateBox box,
RelativeDirection direction,
int street_count_turn,
int street_count_before_turn,
List<KeyValuePair<string, string>> street_from,
List<KeyValuePair<string, string>> street_to,
List<PointPoi> list)
{
// create a new instruction first.
Instruction instruction = new Instruction(box, list);
// pass the instruction to the languate generator.
// test if the street is the same but a turn needs to be taken anyway.
if (street_from == street_to)
{
if (street_count_turn == 0)
{// there are no other streets between the one being turned into and the street coming from in the same
// direction as the turn.
instruction = _generator.GenerateDirectFollowTurn(
instruction, street_count_before_turn, street_to, direction.Direction, list);
}
else
{ // there is another street; this is tricky to explain.
instruction = _generator.GenerateIndirectFollowTurn(
instruction, street_count_turn, street_count_before_turn, street_to, direction.Direction, list);
}
}
else
{
if (street_count_turn == 0)
{ // there are no other streets between the one being turned into and the street coming from in the same
// direction as the turn.
instruction = _generator.GenerateDirectTurn(
instruction, street_count_before_turn, street_to, direction.Direction, list);
}
else
{ // there is another street; this is tricky to explain.
instruction = _generator.GenerateIndirectTurn(
instruction, street_count_turn, street_count_before_turn, street_to, direction.Direction, list);
}
}
// add the instruction to the instructions list.
_instructions.Add(instruction);
}
/// <summary>
/// Generates an instruction for an immidiate turn.
/// </summary>
/// <param name="instruction"></param>
/// <param name="first_street_count_to"></param>
/// <param name="first_street_to"></param>
/// <param name="first_direction"></param>
/// <param name="second_street_to"></param>
/// <param name="second_direction"></param>
/// <returns></returns>
public Instruction GenerateImmidiateTurn(Instruction instruction, int first_street_count_to, List<KeyValuePair<string, string>> first_street_to,
RelativeDirection first_direction, List<KeyValuePair<string, string>> second_street_to, RelativeDirection second_direction)
{
if (first_street_count_to == 1)
{
instruction.Text = string.Format("Take the first turn {0}, on the {1}, and turn immidiately {2} on the {3}.",
this.TurnDirection(first_direction.Direction),
this.GetName("en", first_street_to),
this.TurnDirection(second_direction.Direction),
this.GetName("en", second_street_to));
}
else
{
instruction.Text = string.Format("Take the {4} turn {0}, on the {1}, and turn immidiately {2} on the {3}.",
this.TurnDirection(first_direction.Direction),
this.GetName("en", first_street_to),
this.TurnDirection(second_direction.Direction),
this.GetName("en", second_street_to),
AddOrdinal(first_street_count_to));
}
// returns the instruction with text.
return instruction;
}
