package pl.wroc.pwr.imagechannel.moment;

import pl.wroc.pwr.basic.IDoubleOperator;
import pl.wroc.pwr.imagechannel.IImageChannel;

public class Moment implements IDoubleOperator
{
	/**
	 *
	 */
	private static final long serialVersionUID = -495682429859523914L;

	private IImageChannel imageChannel;

	private int p;
	private int q;

	public Moment( IImageChannel imageChannel, int p, int q )
	{
		this.imageChannel = imageChannel;
		this.p = p;
		this.q = q;
	}

	public float applyDouble( )
	{
		float value = 0;

		for ( int x = 0; x < this.imageChannel.getXSize( ); x++ )
		{
			for ( int y = 0; y < this.imageChannel.getYSize( ); y++ )
			{
				value += Math.pow( x, this.p ) * Math.pow( y, this.q ) * this.imageChannel.getValue( x, y );
			}
		}
		return value;
	}

	public Float apply( )
	{
		return new Float( this.applyDouble( ) );
	}
}