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jasanite · #1 (**permalink**) 08-10-2007

Hi there,
i need the distance and time between the waypoints an save it
in a table in which each row represents a waypoint. First waypoint
hast 0 distance an 0 time, 2cnd has distance/time from 1to2, 3rd
has distance/time from 2to3 ... etc.. The ids of the Rows are in
the name property of the waypoint.

Hmm, i paste my algo, my comment is that it is quite dirty, is there
an easier way to get those informations in one flush.

Code:

 
private void FillSegments(RoutingSet.WaypointDataTable waypointTable)
{
bool move = true;
 
RoutingSet.WaypointRow waypointRow;
MapPoint.Direction direction;
string currentId = "";
double segmentDistance = 0.0;
DateTime startTime = DateTime.Today;
double segmentTime = 0.0;
 
MapPoint.Directions directions = CurrentRoute.Directions;
IEnumerator items = directions.GetEnumerator();
items.Reset();
move = items.MoveNext();
while (move)
{
direction = ((MapPoint.Direction)items.Current);
currentId = direction.Waypoint.Name;
segmentDistance = direction.Distance;
startTime = direction.StartTime;
segmentTime = 0.0;
 
move = items.MoveNext();
direction = ((MapPoint.Direction)items.Current);
while (move && (currentId == direction.Waypoint.Name))
{
segmentDistance += direction.Distance;
 
move = items.MoveNext();
direction = ((MapPoint.Direction)items.Current);
if (move)
{
segmentTime = GetDurationHours(startTime, direction.StartTime);
}
}
 
if (move && currentId != direction.Waypoint.Name)
{
waypointRow = waypointTable.FindByWaypointId(direction.Waypoint.Name);
waypointRow.ElapsedTime = segmentTime;
waypointRow.Mileage = segmentDistance;
}
}
 
// the id of the last waypoint is not shown in the list so i need to
look for it
IEnumerator waypoints = CurrentRoute.Waypoints.GetEnumerator();
waypoints.Reset();
waypoints.MoveNext();
MapPoint.Waypoint waypoint = ((MapPoint.Waypoint)waypoints.Current);
while (waypoints.MoveNext())
{
waypoint = ((MapPoint.Waypoint)waypoints.Current);
}
waypointRow = waypointTable.FindByWaypointId(waypoint.Name);
waypointRow.ElapsedTime = segmentTime;
waypointRow.Mileage = segmentDistance;
}

The Code is just to confuse you, but it works...

Need an easy way, i hate this code

jasanite · #2 (**permalink**) 08-10-2007

how can i make the code-parts ... can't find them

forgot a function i use inside:

private double GetDurationHours(DateTime start, DateTime end)
{
TimeSpan diff = new TimeSpan(end.Ticks - start.Ticks);
return diff.TotalDays; //mp point gives me days in the Route.TripTime prop so i chose it here to, but i use partial funtions in my DataSet so it doesn't matter
}

**Wilfried** · #3 (**permalink**) 08-11-2007

Hi,

Your code is difficult to read. Please put it in between [ code ] [ /code] tags. But it seems ok. You step to all points to read the results so has it to be done if I do have understeand the question right.

jasanite · #4 (**permalink**) 08-13-2007

ok, so you got to do the iteration by yourself
but ...
why has the last segment, which distance=0,
the wrong id, it always carries the 2cnd last
id, why is that
i use the directions of the route, logically it
should have the waypoint with the last id in
it .... or maybe not, do me!

**Wilfried** · #5 (**permalink**) 08-14-2007

Hi,

Probably some error in the logic ? I don't see it immediately in your code, but if I try the code below I have all waypoints listed:

Code:

for (int i = 1; i <= route.Directions.Count; i++) {
	object o = i;
	Direction direction = route.Directions.get_Item(ref o);
}

If you need total distance and total driving time, they are also properties of the Route object.

Note that you also can use for each.

jasanite · #6 (**permalink**) 08-14-2007

Hi,
personally i like your iteration way.
Question: If i go through all of the direction elements ...
Answer: I use the IEnumerator until .MoveNext() returns
false, so i think i iterate all elements. Inspected the
code already step by step and in the last segment the
distance is 0, like expected, but the name of the waypoint
isn't the last one. direction.waypoint is not the last
waypoint.
Is it normal that the last waypoint isn't referenced?
(Tell me, yes, the direction items reference all waypoints,
no, the last waypoint isn't referenced because it isn't
necessary)

To test i use 6 points. startpoint = endpoint... do me!

jasanite · #7 (**permalink**) 08-14-2007

Code:

MapPoint.Directions items = route.Directions.GetEnumerator();
items.Reset();
while(items.MoveNext())
{
    MapPoint.Direction item = (MapPoint.Direction)items.Current;
}

**Wilfried** · #8 (**permalink**) 08-18-2007

Hi,

I did not try. But maybe the MoveNext returns false if positioned on the last record ? In that case you will not have the last one listed in your loop. You can also use the EOF property if the recordset, something like this:

Code:

while (!items.EOF) {
   // here read the item
   items.MoveNext();
}

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