/*]  Copyright (c) 2009-2010, Charles McGarvey  [**************************
**]  All rights reserved.
*
* vi:ts=4 sw=4 tw=75
*
* Distributable under the terms and conditions of the 2-clause BSD license;
* see the file COPYING for a complete text of the license.
*
**************************************************************************/

#ifndef _MOOF_CAMERA_HH_
#define _MOOF_CAMERA_HH_

#include <Moof/Event.hh>
#include <Moof/Frustum.hh>
#include <Moof/Math.hh>
#include <Moof/RigidBody.hh>


namespace Mf {


class Camera : public RigidBody3
{
public:

	Camera()
	{
		mState.init();
		mPrevState.init();

		cml::quaternion_rotation_world_y(mState.orientation, SCALAR(0.0));
	}

	void setPosition(const Vector3& position);
	void setRotation(const Quaternion& rotation);

	void lookAt(const Vector3& point);

	void setProjection(const Matrix4& projection);
	void setProjection(Scalar fovy, Scalar aspect, Scalar near, Scalar far);

	const Matrix4& getModelview() const
	{
		return mModelview;
	}

	const Matrix4& getProjection() const
	{
		return mProjection;
	}

	const Frustum& getFrustum() const
	{
		return mFrustum;
	}


	void uploadToGL(Scalar alpha = 0) const;

	void update(Scalar t, Scalar dt);
	void draw(Scalar alpha = 0) const;
	void handleEvent(const Event& event);

private:

	void calculate(Scalar alpha) const;

	mutable Matrix4 	mModelview;
	Matrix4				mProjection;

	mutable Frustum		mFrustum;
};


} // namespace Mf

#endif // _MOOF_CAMERA_HH_