package initialconditions;

import java.lang.*;
import java.io.*;
import main.BetterTokenizer;
import main.Cell;
import main.GeneralInput;

public class ColumnIC extends InitialCondition	{
	
	int						pos=-1;
	
	public final boolean	noiseAware = true;
	
	public ColumnIC()	{	super()	;	}
	
	public ColumnIC(String n, float iv, int p)	{
		super();
		node = n;
		initValue = iv;
		pos = p;
	}
	
	public void setModel(Cell [] cells)	{
		for(int i = 0; i < Cell.arrayHeight; i++)	{
			float val = initValue;
			if(noiseLevel > 0.0f)	{
				val += noiseLevel * (float)rng.nextGaussian();
				if(val < 0.0f) val = 0.0f;
			}
			try	{ cells[(i*Cell.arrayWidth)+pos].setInitialValue(node, val); }
			catch(Exception e)	{ System.out.println(e.toString()); return; }
		}
	}
	
	public void setFrom(Cell [] cells, boolean takePresentValue) throws Exception	{
		if(!takePresentValue)	{
			initValue = cells[pos].getInitialValue(node);
			for(int i = 1; i < Cell.arrayHeight; i++)	{
				if(initValue != cells[(i*Cell.arrayWidth)+pos].getInitialValue(node))	{
					throw new UnsuitableICException();
				}
			}
		}
		else {
			initValue = cells[pos].nodePeek(node);
			for(int i = 1; i < Cell.arrayHeight; i++)	{
				if(initValue != cells[(i*Cell.arrayWidth)+pos].nodePeek(node))	{
					throw new UnsuitableICException();
				}
			}
		}
	}

	public void print()	{	System.out.println("Column of " + node + " = " + initValue + " in position " + pos + "; ");	}
	
	protected void loadParameter(String info, BetterTokenizer tokenizer) throws Exception	{
		if(info.equals("Column")) {
			GeneralInput.nextToken(tokenizer);
			pos = (int)tokenizer.nval;
		}
		else if(info.equals("XPos")) {
			GeneralInput.nextToken(tokenizer);
			pos = (int)tokenizer.nval;
		}
			
		else super.loadParameter(info, tokenizer);
	}

	public void toString(PrintWriter pw, String indent) {
		super.toString(pw, indent);
		pw.println(indent + "&Column\t" + pos);
	}
}