/**
 * This source file is part of OgreColladaPlugin
 * an addon for OGRE (Object-oriented Graphics Rendering Engine)
 * For the latest info, see http://www.ogre3d.org/
 *
 * This program is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free Software
 * Foundation; either version 2 of the License, or (at your option) any later
 * version.

 * This program 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 Lesser General Public License for more details.

 * You should have received a copy of the GNU Lesser General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
 * Place - Suite 330, Boston, MA 02111-1307, USA, or go to
 * http://www.gnu.org/copyleft/lesser.txt.
 *
 * @author	Philipp Hartl
 * @see		README
 */

#ifndef __COLLADA_CAMERA_H__
#define __COLLADA_CAMERA_H__

#include "OgreColladaPrerequisites.h"
#include "OgreColladaEntity.h"

namespace Ogre
{
	/**
	 * camera class
	 */
	class ColladaCamera : public ColladaEntity
	{
	public:
		ColladaCamera(ColladaDocument *d, xmlNode *n);
		virtual ~ColladaCamera(void);

		/**
		 * create an ogre camera object
		 *
		 * @see	base class
		 */
		virtual MovableObject *getOgreInstance(void) const;

		/**
		 * import <camera> node
		 *
		 * @see	base class
		 */
		virtual bool doImport(void);

		virtual EntityTypes getEntityType(void) const { return CAMERA; }

	private:
		enum CameraType { ORTHOGRAPHIC = 0, PERSPECTIVE, UNKNOWN = -1 };

		CameraType mType;
		float mXFov, mYFov, mZNear, mZFar;		// perspective
		float mLeft, mRight, mTop, mBottom;		// orthographic

		/**
		 * import an orthographic or perspective camera
		 *
		 * @param	the <imager> node
		 * @return	true if succeeds, false otherwise
		 */
		bool importOptics(xmlNode *node);

		/**
		 * import a specific image sensor of a camera (e.g. CCD)
		 * 
		 * @param	the <imager> node
		 * @return	true if succeeds, false otherwise
		 */
		bool importImager(xmlNode *node);
	};
}

#endif // __COLLADA_CAMERA_H__