1 /* Copyright (C) 2010-2020 The RetroArch team
3 * ---------------------------------------------------------------------------------------
4 * The following license statement only applies to this file (vector_3.h).
5 * ---------------------------------------------------------------------------------------
7 * Permission is hereby granted, free of charge,
8 * to any person obtaining a copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation the rights to
10 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
11 * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
16 * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
18 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
23 #ifndef __LIBRETRO_SDK_GFX_MATH_VECTOR_3_H__
24 #define __LIBRETRO_SDK_GFX_MATH_VECTOR_3_H__
29 #include <retro_common_api.h>
33 typedef float vec3_t[3];
35 #define vec3_dot(a, b) (a[0] * b[0] + a[1] * b[1] + a[2] * b[2])
37 #define vec3_cross(dst, a, b) \
38 dst[0] = a[1]*b[2] - a[2]*b[1]; \
39 dst[1] = a[2]*b[0] - a[0]*b[2]; \
40 dst[2] = a[0]*b[1] - a[1]*b[0]
42 #define vec3_length(a) sqrtf(vec3_dot(a,a))
44 #define vec3_add(dst, src) \
49 #define vec3_subtract(dst, src) \
54 #define vec3_scale(dst, scale) \
59 #define vec3_copy(dst, src) \
64 #define vec3_normalize(dst) vec3_scale(dst,1.0f / vec3_length(dst))