Additional API functions

[daviddoria]

float GetPathLength();
bool PathReachedEndPoint(); // returns false if the path from startPoint to endPoint cannot be found

[arnaudgelas]

Just a question regarding the GetPathLength method.

Should this method return the "euclidean" distance or the "geodesic" one (the last one would take into account speed function)?

[daviddoria]

Why not have both?

GetEuclideanPathLength()
GetGeodesicPathLength()

[arnaudgelas]

Sounds good to me!