/*
 * (c) Copyright 2010-2011 AgileBirds
 *
 * This file is part of OpenFlexo.
 *
 * OpenFlexo is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * OpenFlexo is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with OpenFlexo. If not, see <http://www.gnu.org/licenses/>.
 *
 */
package org.openflexo.fge.geom.area;

import java.awt.geom.AffineTransform;
import java.util.logging.Logger;

import org.openflexo.fge.geom.FGEAbstractLine;
import org.openflexo.fge.geom.FGEGeometricObject.SimplifiedCardinalDirection;
import org.openflexo.fge.geom.FGELine;
import org.openflexo.fge.geom.FGEPoint;
import org.openflexo.fge.geom.FGERectangle;
import org.openflexo.fge.geom.FGEShape;
import org.openflexo.fge.graphics.FGEGraphics;

public class FGEExclusiveOrArea extends FGEOperationArea {

	private static final Logger logger = Logger.getLogger(FGEExclusiveOrArea.class.getPackage().getName());

	private FGEArea area1;
	private FGEArea area2;

	public FGEExclusiveOrArea(FGEArea area1, FGEArea area2) {
		super();
		this.area1 = area1;
		this.area2 = area2;
	}

	@Override
	public String toString() {
		return "FGEExclusiveOrArea: " + area1 + " XOR " + area2;
	}

	@Override
	public boolean containsPoint(FGEPoint p) {
		return area1.containsPoint(p) && !area2.containsPoint(p) || area2.containsPoint(p) && !area1.containsPoint(p);
	}

	@Override
	public boolean containsLine(FGEAbstractLine l) {
		// TODO: do it better
		return containsPoint(l.getP1()) && containsPoint(l.getP2());
	}

	@Override
	public boolean containsArea(FGEArea a) {
		if (a instanceof FGEPoint) {
			return containsPoint((FGEPoint) a);
		}
		if (a instanceof FGELine) {
			return containsLine((FGELine) a);
		}
		if (a instanceof FGEShape) {
			return FGEShape.AreaComputation.isShapeContainedInArea((FGEShape<?>) a, this);
		}
		return false;
	}

	@Override
	public FGEExclusiveOrArea transform(AffineTransform t) {
		return new FGEExclusiveOrArea(area1.transform(t), area2.transform(t));
	}

	@Override
	public void paint(FGEGraphics g) {
		// TODO
		// Use a finite method, using Java2D to perform shape computation
		// in the area defined by supplied FGEGraphics
	}

	@Override
	public FGEPoint getNearestPoint(FGEPoint aPoint) {
		if (containsPoint(aPoint)) {
			return aPoint.clone();
		}

		// TODO: to implement
		logger.warning("Not implemented yet !!!!");
		return null;
	}

	/**
	 * Return a flag indicating if this area is finite or not
	 * 
	 * @return
	 */
	@Override
	public final boolean isFinite() {
		logger.warning("Not implemented yet !!!!");
		return false;
	}

	/**
	 * If this area is finite, return embedding bounds as a FGERectangle (this is not guaranteed to be optimal in some cases). For
	 * non-finite areas (if this area is not finite), return null
	 * 
	 * @return
	 */
	@Override
	public final FGERectangle getEmbeddingBounds() {
		logger.warning("Not implemented yet !!!!");
		return null;
	}

	/**
	 * Return nearest point from point "from" following supplied orientation
	 * 
	 * Returns null if no intersection was found
	 * 
	 * @param from
	 *            point from which we are coming to area
	 * @param orientation
	 *            orientation we are coming from
	 * @return
	 */
	@Override
	public FGEPoint nearestPointFrom(FGEPoint from, SimplifiedCardinalDirection orientation) {
		if (containsPoint(from)) {
			return from.clone();
		}

		// TODO: to implement
		logger.warning("Not implemented yet !!!!");
		return null;
	}

}