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v3_add, v3_mag, v3_scale

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This commit is contained in:
Trammell Hudson 2015-02-14 20:03:10 -05:00
parent bb1b5b23bd
commit 5cda4d37b8
1 changed files with 40 additions and 0 deletions
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40
v3.h
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@ -51,6 +51,33 @@ v3_len(
return sqrt(dx*dx + dy*dy + dz*dz);
}
static inline double
v3_mag(
const v3_t v0
)
{
float dx = v0.p[0];
float dy = v0.p[1];
float dz = v0.p[2];
return sqrt(dx*dx + dy*dy + dz*dz);
}
static inline v3_t
v3_add(
v3_t a,
v3_t b
)
{
v3_t c = { .p = {
a.p[0] + b.p[0],
a.p[1] + b.p[1],
a.p[2] + b.p[2],
} };
return c;
}
static inline v3_t
v3_sub(
@ -66,6 +93,19 @@ v3_sub(
return c;
}
static inline v3_t
v3_scale(
v3_t a,
float s
)
{
v3_t c = { .p = {
a.p[0]*s,
a.p[1]*s,
a.p[2]*s,
} };
return c;
}
static inline float
v3_dot(