package pl.wroc.pwr.imagechannel.basic;

import pl.wroc.pwr.IOperator;
import pl.wroc.pwr.imagechannel.IImageChannel;

public class CopyChannel implements IOperator< IImageChannel > {
	private IImageChannel targetChannel;
	private IImageChannel sourceChannel;
	
	public CopyChannel( ) {
		this( null, null );
	}
	
	public CopyChannel(IImageChannel sourceChannel) {
		this.targetChannel = null;
		this.sourceChannel = sourceChannel;
	}
	
	public CopyChannel( IImageChannel targetChannel, IImageChannel sourceChannel ) {
		this.targetChannel = targetChannel;
		this.sourceChannel = sourceChannel;
	}

	public IImageChannel apply( ) {
		IImageChannel outputChannel = null;
		if ( this.targetChannel == null ) {
			return null;
		}
		outputChannel = this.targetChannel;
		for ( int i = 0; i < this.targetChannel.getMaxIndex( ); i++ ) {
			outputChannel.setValue( i, this.sourceChannel.getValue( i ) );
		}
		return outputChannel;
	}
}