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Code submissions have continually suffered from formatting inconsistencies that constantly have to be addressed. Using clang-format simplifies this by making code formatting more consistent, and allows automation of the code formatting so that maintainers can focus more on the code itself instead of code formatting.
92 lines
2.4 KiB
C
92 lines
2.4 KiB
C
/******************************************************************************
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Copyright (C) 2013 by Hugh Bailey <obs.jim@gmail.com>
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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******************************************************************************/
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#include "vec3.h"
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#include "vec4.h"
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#include "quat.h"
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#include "axisang.h"
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#include "plane.h"
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#include "matrix3.h"
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#include "math-extra.h"
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void vec3_from_vec4(struct vec3 *dst, const struct vec4 *v)
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{
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dst->m = v->m;
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dst->w = 0.0f;
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}
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float vec3_plane_dist(const struct vec3 *v, const struct plane *p)
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{
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return vec3_dot(v, &p->dir) - p->dist;
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}
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void vec3_rotate(struct vec3 *dst, const struct vec3 *v,
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const struct matrix3 *m)
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{
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struct vec3 temp;
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vec3_copy(&temp, v);
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dst->x = vec3_dot(&temp, &m->x);
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dst->y = vec3_dot(&temp, &m->y);
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dst->z = vec3_dot(&temp, &m->z);
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dst->w = 0.0f;
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}
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void vec3_transform(struct vec3 *dst, const struct vec3 *v,
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const struct matrix4 *m)
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{
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struct vec4 v4;
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vec4_from_vec3(&v4, v);
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vec4_transform(&v4, &v4, m);
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vec3_from_vec4(dst, &v4);
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}
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void vec3_transform3x4(struct vec3 *dst, const struct vec3 *v,
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const struct matrix3 *m)
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{
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struct vec3 temp;
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vec3_sub(&temp, v, &m->t);
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dst->x = vec3_dot(&temp, &m->x);
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dst->y = vec3_dot(&temp, &m->y);
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dst->z = vec3_dot(&temp, &m->z);
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dst->w = 0.0f;
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}
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void vec3_mirror(struct vec3 *dst, const struct vec3 *v, const struct plane *p)
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{
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struct vec3 temp;
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vec3_mulf(&temp, &p->dir, vec3_plane_dist(v, p) * 2.0f);
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vec3_sub(dst, v, &temp);
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}
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void vec3_mirrorv(struct vec3 *dst, const struct vec3 *v,
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const struct vec3 *vec)
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{
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struct vec3 temp;
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vec3_mulf(&temp, vec, vec3_dot(v, vec) * 2.0f);
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vec3_sub(dst, v, &temp);
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}
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void vec3_rand(struct vec3 *dst, int positive_only)
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{
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dst->x = rand_float(positive_only);
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dst->y = rand_float(positive_only);
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dst->z = rand_float(positive_only);
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dst->w = 0.0f;
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}
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