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/****************************************************************************
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/>.
****************************************************************************/
#include <math.h>
#include <mathplus.h>
#include <vertex.h>
void tpoint_swap(tpoint *a, tpoint *b)
{
tpoint temp;
temp.x = a->x;
temp.y = a->y;
temp.z = a->z;
a->x = b->x;
a->y = b->y;
a->z = b->z;
b->x = temp.x;
b->y = temp.y;
b->z = temp.z;
}
tpoint tpoint_2d(double xi,double yi)
{
tpoint p;
p.x = xi;
p.y = yi;
p.z = 0.0;
return p;
}
tpoint tpoint_3d(double xi,double yi,double zi)
{
tpoint p;
p.x = xi;
p.y = yi;
p.z = zi;
return p;
}
tpoint tpoint_copy(tpoint *a)
{
tpoint p;
p.x = a->x;
p.y = a->y;
p.z = a->z;
return p;
}
tvertex tvertex_2d(double x0,double y0)
{
tvertex v;
v.x = x0;
v.y = y0;
v.z = 1.0;
return v;
}
tvertex tvertex_3d(double x0,double y0,double z0)
{
tvertex v;
v.x = x0;
v.y = y0;
v.z = z0;
return v;
}
tvertex tvertex_copy(tvertex *a)
{
tvertex v;
v.x = a->x;
v.y = a->y;
v.z = a->z;
return v;
}
tvertex tvertex_null(void)
{
tvertex v;
v.x = 0.0;
v.y = 0.0;
v.z = 0.0;
return v;
}
tvertex tvertex_sub(tvertex *v1, tvertex *v2)
{
tvertex v;
v.x = v1->x-v2->x;
v.y = v1->y-v2->y;
v.z = v1->z-v2->z;
return v;
}
tvertex tvertex_add(tvertex *v1, tvertex *v2)
{
tvertex v;
v.x = v1->x+v2->x;
v.y = v1->y+v2->y;
v.z = v1->z+v2->z;
return v;
}
tvertex tvertex_mul(tvertex *v1, tvertex *v2)
{
tvertex v;
v.x = v1->x*v2->x;
v.y = v1->y*v2->y;
v.z = v1->z*v2->z;
return v;
}
double tvertex_length(tvertex *v)
{
double l;
l = sqrt(sqr(v->x)+sqr(v->y)+sqr(v->z));
return l;
}
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