package pl.wroc.pwr.imagechannel.model;

import java.util.Arrays;

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


public class ImageChannel implements IImageChannel
{
	/**
	 *
	 */
	private static final long serialVersionUID = -2314468080041485971L;

	private int sizeX;
	private int sizeY;
	private float[] values;
	private int[] size;

	private float minimum;
	private float maximum;

	public ImageChannel(int x, int y) {
		this( x, y, 0, 1 );
	}

	public ImageChannel(int[] size) {
		this( size[ IPixel.X ], size[ IPixel.Y ] );
	}

	public ImageChannel(int x, int y, float minimum, float maximum) {
		this.sizeX = x;
		this.sizeY = y;
		this.values = new float[ this.sizeX * this.sizeY ];
		this.size = new int[ ]{ this.sizeX, this.sizeY };
		this.minimum = minimum;
		this.maximum = maximum;
	}

	public final float getMinimumValue() {
		return this.minimum;
	}

	public final float getMaximumValue() {
		return this.maximum;
	}

	public final int getIndex(int x, int y) {
		return x + this.sizeX * y;
	}

	public final int getIndex(int[] position) {
		return position[ IPixel.X ] + this.sizeX * position[ IPixel.Y ];
	}

	public final int[ ] getSize( ) {
		return this.size;
	}

	public final int getXSize( ) {
		return this.sizeX;
	}

	public final int getYSize( ) {
		return this.sizeY;
	}

	public final float getValue( int x, int y ) {
		return this.values[ this.getIndex( x, y ) ];
	}

	public final void setValue( int x, int y, float value ) {
		this.values[ this.getIndex( x, y ) ] = value;
	}

	public final float getValue(int[] position) {
		return this.values[ this.getIndex( position ) ];
	}

	public final void setValue(int[] position, float value) {
		this.values[ this.getIndex( position ) ] = value;
	}

	public final int getMaxIndex() {
		return this.values.length;
	}

	public final float getValue(int index) {
		return this.values[index];
	}

	public final void setValue(int index, float value) {
		this.values[index] = value;
	}

	public final boolean inRange(int x, int y) {
		return ( x >= 0 )&&( y >= 0 )&&( x < this.sizeX )&&( y < this.sizeY );
	}

	public final boolean inIndexRange( int index ) {
		return ( ( index >= 0 )&&( index < this.getMaxIndex( ) ) );
	}

	public final void reset() {
		Arrays.fill(this.values, 0);
	}

	public final float [] getRaster() {
		return this.values;
	}

	@Override
	public String toString() {
		return "ImageChannel[" + this.getXSize() + ", " + this.getYSize() + "]";  //$NON-NLS-1$//$NON-NLS-2$ //$NON-NLS-3$
	}
}