private void normaliseVelocities() {
		int rows = velocities.length / 2;
		for(int i = 0; i < velocities.length / 2; i++){
			for(int k = 0; k < velocities[i].length; k++){
				double denominator = 0;
				if(velocities[i][k] > velocities[i + rows][k]){
					denominator = velocities[i][k];
				}else{
					denominator = velocities[i + rows][k];
				}
				velocities[i][k] = velocities[i][k] / denominator;
				velocities[i + rows][k] = velocities[i + rows][k] / denominator;
			}
		}
		
	}