AcMapTopology::GetBackwardEdge Method

Land Desktop Development ARX CPP SDK

AcMapTopology:: GetBackwardEdge Method
 

Retrieves the half edge with the specified object ID from this topology model.

AcMap::EErrCode GetBackwardEdge(
    AcMapTopoHalfEdge*& pHalfEdge, 
    long lFullEdgeId
);
Parameters 
Description 
pHalfEdge 
Output AcMapTopoHalfEdgehalf edge object. This value points to a copy of the half edge referenced by the specified half edge object ID. The caller is responsible for freeing this object.  
lFullEdgeId 
Input full edge ID.  
Returns

Returns AcMap::EErrCode kOk if successful. Returns AcMap::kErrWrongType if the topology is a polygon. Returns AcMap::kErrBadInput if the full edge ID is invalid.

Remarks

The direction of the half edge is from the end node to the start node of the full edge.

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