////----------------------------------------Trouver la distance sur terrain a partir del'echellle----------------------------------
//-------------------------------------------------------------------------------------------------------------
public double FindDistanceOnField(Line line)
// real distance should be in meters
{
Point pointA = new Point(line.X1, line.Y1);
Point pointB = new Point(line.X2, line.Y2);
double tempDistance = Outils.DistanceBtwTwoPoints(pointA, pointB);
return((tempDistance * ScaleDistanceOnField) / ScaleDistanceOnCanvas);
}