/****************************************************************************
Copyright (C) 2012 HidraVFX development team
            <https://launchpad.net/~hidravfx-dev-team>

This file is part of the HidraVFX project.

HidraVFX 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.

HidraVFX 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 HidraVFX. If not, see <http://www.gnu.org/licenses/>.
****************************************************************************/

#ifndef VERTEX_H_
#define VERTEX_H_


/* native point object */
typedef struct
{
    double x;
    double y;
    double z;
} tpoint;

typedef struct
{
   double x;
   double y;
   double z;
} tvertex;

extern void tpoint_swap(tpoint *a, tpoint *b);
extern tpoint tpoint_2d(double xi,double yi);
extern tpoint tpoint_3d(double xi,double yi,double zi);
extern tpoint tpoint_copy(tpoint *a);
extern tvertex tvertex_2d(double x0,double y0);
extern tvertex tvertex_3d(double x0,double y0,double z0);
extern tvertex tvertex_copy(tvertex *a);
extern tvertex tvertex_null(void);
extern tvertex tvertex_sub(tvertex *v1, tvertex *v2);
extern tvertex tvertex_add(tvertex *v1, tvertex *v2);
extern tvertex tvertex_mul(tvertex *v1, tvertex *v2);
extern double tvertex_length(tvertex *v);

#endif