package pl.wroc.pwr.imagechannel.validation;

import pl.wroc.pwr.basic.IBooleanOperator;
import pl.wroc.pwr.basic.IBooleanOperator2P;
import pl.wroc.pwr.imagechannel.IImageChannel;

public class Compare implements IBooleanOperator2P<IImageChannel, IImageChannel> {
	
	private float maxDelta;
	
	public Compare() {
		this(0);
	}

	public Compare(float delta) {
		this.maxDelta = delta;
	}


	public boolean applyValue(IImageChannel channel1, IImageChannel channel2) {
		if (channel1.getXSize() != channel2.getXSize()) {
			System.out.println("X size is different.");
			return false;
		}
		if (channel1.getYSize() != channel2.getYSize()) {
			System.out.println("Y size is different.");
			return false;
		}
		boolean result = true;
		for (int index = 0; index < channel1.getMaxIndex(); index++) {
			float delta = Math.abs(channel1.getValue(index) - channel2.getValue(index));
			if (delta > this.maxDelta) {
				System.out.println("Index: " + index + ", value1: " + channel1.getValue(index) + ", value2: " + channel2.getValue(index));
				result = false;
			}
		}
		return result;
	}

	public Boolean apply(IImageChannel channel1, IImageChannel channel2) {
		return new Boolean(this.applyValue(channel1, channel2));
	}
}