package pl.wroc.pwr.roi.basic;

import pl.wroc.pwr.IOperator;
import pl.wroc.pwr.roi.IROI;

public class LargestROI implements IOperator< IROI >
{
	/**
	 * 
	 */
	private static final long serialVersionUID = 6277914706866507L;

	private IROI [] inputROIS;
	
	public LargestROI( IROI [] inputROIS )
	{
		this.inputROIS = inputROIS;
	}
	
	public IROI apply( )
	{
		IROI outputROI = null;
		
		int largestSize = 0;
		int index = -1;
		
		for ( int i = 0; i < this.inputROIS.length; i++ )
		{
			int size = this.inputROIS[ i ].getROICoordinates( ).size( );
			if ( size > largestSize )
			{
				largestSize = size;
				index = i;
			}
		}
		if ( index >= 0 )
		{
			outputROI = this.inputROIS[ index ];
		}
		
		return outputROI;
	}
}