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vec3.h
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vec3.h
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/* vec3.h: three-dimensional vector types for gpufield.
* Copyright (C) 2014 Bradley Worley.
*
* 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
*/
/* include the standard math header. */
#include <math.h>
/* ensure once-only inclusion. */
#ifndef __VEC3_H__
#define __VEC3_H__
/* vec3: data type for 3-vectors.
*/
typedef struct {
/* @x: x-coordinate.
* @y: y-coordinate.
* @z: z-coordinate.
*/
float x, y, z;
} vec3;
/* function declarations: */
vec3 vector (float x, float y, float z);
int vcmp (vec3 a, vec3 b);
float len (vec3 v);
float dot (vec3 a, vec3 b);
vec3 cross (vec3 a, vec3 b);
vec3 unit (vec3 v);
vec3 scale (float alpha, vec3 v);
vec3 proj (vec3 v, vec3 u);
vec3 add (vec3 a, vec3 b);
vec3 sub (vec3 a, vec3 b);
vec3 vinterp (vec3 a, vec3 b, float t);
vec3 field (vec3 A, vec3 B, vec3 M, float I);
#endif /* __VEC3_H__ */