private double getProbabilityFromPoint(int a, int b){
		int x = a; 
		int y = b;
		double prob = getPointsInformation(x, y).getProbability();

		if(x == 0 && y == 0){
			return prob;
		}
		if(y == 0){
			x--; y = 29;
		}
		else{
			y--;
		}
		while(getPointsInformation(x, y).getProbability() == 0){
			if(x == 0 && y == 0){
				break;
			}
			if( y == 0){
				x--; y = 29;
			}
			else{
				y--;
			}
		}
		prob = prob - getPointsInformation(x, y).getProbability();
		return prob;
	}