Initialize Pi, Mu, and Sigma parameters

[wiamadaya]

Hello, I'm still new to GMM and would like to implement in my program, but I'm confused what the below method is doing

public void InitializeParameters(int index){
	 	
		Pi_k[0] = 0.33;                              
		Pi_k[1] = 0.33;                              
		Pi_k[2] = 0.34;                              
		
		Mu_k[0] = 2;                               
		Mu_k[1] = 5;                               
		Mu_k[2] = 9;                                
		
		Sigma_k[0] = 5;                             
		Sigma_k[2] = 3;
		
		if(index == 0){
		  Sigma_k[1] =  3;  
		  rough = Sigma_k[1]; 
		}
		else
		  Sigma_k[1] = rough;	
		
	}

My understanding is we are creating GMM with 3 components, what about If only 2 components, how to initialize these Pi, Mu, and Sigma parameters? (I understand what they are but cant intuitively understand how to initialize them, is this using k-means or random)