istereo
annotate libs/vmath/basis_c.c @ 31:3d933b796ad2
added datafie pull
| author | John Tsiombikas <nuclear@mutantstargoat.com> |
|---|---|
| date | Thu, 08 Sep 2011 15:06:40 +0300 |
| parents | |
| children | ff055bff6a15 |
| rev | line source |
|---|---|
| nuclear@28 | 1 #include "basis.h" |
| nuclear@28 | 2 #include "matrix.h" |
| nuclear@28 | 3 |
| nuclear@28 | 4 void basis_matrix(mat4_t res, vec3_t i, vec3_t j, vec3_t k) |
| nuclear@28 | 5 { |
| nuclear@28 | 6 m4_identity(res); |
| nuclear@28 | 7 m4_set_column(res, v4_cons(i.x, i.y, i.z, 1.0), 0); |
| nuclear@28 | 8 m4_set_column(res, v4_cons(j.x, j.y, j.z, 1.0), 1); |
| nuclear@28 | 9 m4_set_column(res, v4_cons(k.x, k.y, k.z, 1.0), 2); |
| nuclear@28 | 10 } |
| nuclear@28 | 11 |
| nuclear@28 | 12 void basis_matrix_dir(mat4_t res, vec3_t dir) |
| nuclear@28 | 13 { |
| nuclear@28 | 14 vec3_t k = v3_normalize(dir); |
| nuclear@28 | 15 vec3_t j = {0, 1, 0}; |
| nuclear@28 | 16 vec3_t i = v3_cross(j, k); |
| nuclear@28 | 17 j = v3_cross(k, i); |
| nuclear@28 | 18 basis_matrix(res, i, j, k); |
| nuclear@28 | 19 } |