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[util] Add component-wise vector mult-add/sub macros

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Bill Currie 2021-01-26 00:39:34 +09:00
parent d8b81e8678
commit 3bbe33844a
1 changed files with 12 additions and 0 deletions
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12
include/QF/math/vector.h
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@ -74,6 +74,18 @@ extern const vec_t *const vec3_origin;
(c)[1] = (a)[1] - (s) * (b)[1]; \
(c)[2] = (a)[2] - (s) * (b)[2]; \
} while (0)
#define VectorCompMultAdd(a,b,c,d) \
do { \
(d)[0] = (a)[0] + (b)[0] * (c)[0]; \
(d)[1] = (a)[1] + (b)[1] * (c)[1]; \
(d)[2] = (a)[2] + (b)[2] * (c)[2]; \
} while (0)
#define VectorCompMultSub(a,b,c,d) \
do { \
(d)[0] = (a)[0] - (b)[0] * (c)[0]; \
(d)[1] = (a)[1] - (b)[1] * (c)[1]; \
(d)[2] = (a)[2] - (b)[2] * (c)[2]; \
} while (0)
#define VectorLength(a) sqrt(DotProduct(a, a))
#define VectorScale(a,b,c) \