/*
* Copyright Droids Corporation (2009)
*
* This program 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 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 General Public License for more details.
*
* You should have received a copy of the GNU 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
*
* Revision : $Id: f16.h,v 1.6.4.3 2008-05-10 15:06:26 zer0 Exp $
*
*/
#ifndef _VECT_BASE_H_
#define _VECT_BASE_H_
typedef struct _vect_t {
float x;
float y;
} vect_t;
typedef struct _point_t {
float x;
float y;
} point_t;
/* Return scalar product */
float
vect_pscal(vect_t *v, vect_t *w);
/* Return Z of vectorial product */
float
vect_pvect(vect_t *v, vect_t *w);
/* Return scalar product */
int8_t
vect_pscal_sign(vect_t *v, vect_t *w);
/* Return Z of vectorial product */
int8_t
vect_pvect_sign(vect_t *v, vect_t *w);
/* norm of a vector */
//float norm(float x1, float y1, float x2, float y2);
float pt_norm(point_t *p1, point_t *p2);
float vect_norm(vect_t *v);
void vect_rot_trigo(vect_t *v);
void vect_rot_retro(vect_t *v);
float vect_get_angle(vect_t *v, vect_t *w);
void vect_resize(vect_t *v, float l);
#endif /* _VECT_BASE_H_ */