public interface ICommStrengthFunc {
	public boolean isMonotonic();
	
	public double getStrength(double lfDist);
	
	public double maxStrengthRange(double lfMinD, double lfMaxD);
	
	public double minStrengthRange(double lfMinD, double lfMaxD);
	
	public double getGrad(double lfDist);
	
	public double maxDerivRange(double lfMin, double lfMax);
	
	public double minDerivRange(double lfMin, double lfMax);
	
	public ICommStrengthFunc makeCopy();
}