camera.h

/*
    camera.h

    Copyright 2007 Sebastien Delestaing
    
    This file is part of "the_cube".

    "the_cube" 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.

    "the_cube" 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 this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#ifndef _CAMERA_H
#define _CAMERA_H

#include <pspctrl.h>
#include <stdlib.h>	
#include <pspgum.h>
#include <math.h>

typedef struct s_cam
{
    ScePspFVector3 position;
    ScePspFVector3 view;
    ScePspFVector3 up_vector;
    ScePspFVector3 strafe;
}cam_t;    

cam_t *cameraInit (void);
void cameraDispose (cam_t *camera);

// This changes the position, view, and up vector of the camera.
void cameraPosition (cam_t *camera, ScePspFVector3 *vPosition, ScePspFVector3 *vView, ScePspFVector3 *vUpVector);

// This rotates the camera's view around the position depending on the values passed in.
void cameraRotateView (cam_t *camera, float angle, float X, float Y, float Z);

// This rotates the camera around origin point (I.E. your character).
void cameraRotateAroundOrigin (cam_t *camera, float theta, float phi);

// This strafes the camera left or right depending on the speed (+/-) 
void cameraStrafe (cam_t *camera, float speed);

// This will move the camera forward or backward depending on the speed
void cameraMove (cam_t *camera, float speed);

// This uses sceGumLookAt() to tell PSP where to look
void cameraLook (cam_t *camera);

#endif