/* 	camera.h
	This file is part of the Osirion project
*/

#ifndef __INCLUDED_CAMERA_H__
#define __INCLUDED_CAMERA_H__

#include "common/vector3f.h"

/// camera functions
/** The functions in this namespace performs the transformations
for the camera eye location. The camera always looks at (0,0,0)
*/
namespace camera
{
	/// draw the OpenGL camera transformation
	void draw(float elapsed);

	/// rotate the camera left
	void rotate_left();
	/// rotate the camera right
	void rotate_right();
	/// rotate the camera up
	void rotate_up();
	/// rotate the camera down
	void rotate_down();

	/// switch to next camera mode
	void nextmode();
	
	/// camera target
	/** The location the camera is looking at */
	extern Vector3f target;

	/// horizontal viewing angle x/z plane
	extern float horiz_angle;
	/// vertical viewing angle z/y plane
	extern float vert_angle;
	/// distance from the camera to the target
	/** The distance in game units from the eye of the camera to the target */
	extern float distance;
};
	
#endif // __INCLUDED_CAMERA_H__