ArcGIS Developer Help

IForwardStar.QueryAtTurn Method

Returns the turn through which the index'th adjacent edge found with FindAdjacent passes, and the weight value of the turn.

[Visual Basic .NET]
Public Sub QueryAtTurn ( _
    ByVal Index As Integer, _
    ByRef adjacentTurnEID As Integer, _
    ByRef adjacentTurnWeightValue As Object _
)

[C#]
public void QueryAtTurn (
    int Index,
    ref int adjacentTurnEID,
    ref object adjacentTurnWeightValue
);

[C++]
HRESULT QueryAtTurn(
  long Index,
  System.Int32* adjacentTurnEID,
  Variant* adjacentTurnWeightValue
);

[C++]
Parameters
Index [in]

  Index is a parameter of type long
adjacentTurnEID [out]

  adjacentTurnEID is a parameter of type long*
adjacentTurnWeightValue [out]

  adjacentTurnWeightValue is a parameter of type VARIANT*

Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

Description

QueryAtTurn returns the nth turn element and weight as you traverse from the fromEdgeID specified in IForwardStar::FindAdjacent to the nth adjacent edge.

Remarks

A turn represents a movement between two adjacent edges, the from-edge and the to-edge. If you are querying turns, you must specify the fromEdgeEID in the IForwardStar::FindAdjancent request. This is from-edge of the turn.

Index is a number between 0 and n-1, where n is the number of adjacent edges returned by FindAdjacent. adjacentTurnWeightValue is the value of the weight specified in the turnWeight parameter of INetwork::CreateForwardStar.

NOTE: Since turns in networks are not implemented, this method is not implemented.

IForwardStar.QueryAtTurn Method

Product Availability

Description

Remarks

See Also