def find_no_of_isocurves(target_0, target_1, avg_layer_height=1.1):
    """ Returns the average number of isocurves that can cover the get_distance from target_0 to target_1. """
    avg_ds0 = target_0.get_avg_distances_from_other_target(target_1)
    avg_ds1 = target_1.get_avg_distances_from_other_target(target_0)
    number_of_curves = ((avg_ds0 + avg_ds1) * 0.5) / avg_layer_height
    return max(1, int(number_of_curves))