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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 964 | - | 1 | #include "vector.h" |
| 2 | #include <math.h> |
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| 3 | |||
| 4 | void vector_cross(const vector *a, const vector *b, vector *out) |
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| 5 | { |
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| 6 | out->x = a->y * b->z - a->z * b->y; |
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| 7 | out->y = a->z * b->x - a->x * b->z; |
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| 8 | out->z = a->x * b->y - a->y * b->x; |
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| 9 | } |
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| 10 | |||
| 11 | float vector_dot(const vector *a, const vector *b) |
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| 12 | { |
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| 13 | return a->x * b->x + a->y * b->y + a->z * b->z; |
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| 14 | } |
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| 15 | |||
| 16 | void vector_normalize(vector *a) |
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| 17 | { |
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| 18 | float mag = sqrt(vector_dot(a, a)); |
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| 19 | a->x /= mag; |
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| 20 | a->y /= mag; |
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| 21 | a->z /= mag; |
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| 22 | } |
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| 23 | |||
| 24 | float vector_magnitude(const vector *a) |
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| 25 | { |
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| 26 | return sqrt(pow(a->x,2.0) + pow(a->y,2.0) + pow(a->z,2.0)); |
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| 27 | } |