package pl.wroc.pwr.imagechannel.basic;

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

public class MultiplyValue implements IOperator< IImageChannel >{
	private IImageChannel inputChannel;
	private float value;
	private boolean inPlace;

	public MultiplyValue( IImageChannel channel, float value, boolean inPlace ) {
		this.inputChannel = channel;
		this.value = value;
		this.inPlace = inPlace;
		System.out.println("MultiplyValue on " + channel + " with value " + value + ", inPlace " + inPlace); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
	}

	public void setInPlace( boolean inPlace ) {
		this.inPlace = inPlace;
	}

	public void setValue( float value ) {
		this.value = value;
	}

	public IImageChannel apply( ) {
		if ( this.inputChannel == null ) {
			return null;
		}
		IImageChannel outputChannel = this.inPlace ? this.inputChannel : new ImageChannel( this.inputChannel.getSize( ) );
		for ( int i = 0; i < this.inputChannel.getMaxIndex( ); i++ ) {
			outputChannel.setValue( i, this.inputChannel.getValue( i ) * this.value );
		}
		return outputChannel;
	}
}