1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/libs/vmath/basis_c.c	Thu Sep 08 08:30:42 2011 +0300
     1.3 @@ -0,0 +1,19 @@
     1.4 +#include "basis.h"
     1.5 +#include "matrix.h"
     1.6 +
     1.7 +void basis_matrix(mat4_t res, vec3_t i, vec3_t j, vec3_t k)
     1.8 +{
     1.9 +	m4_identity(res);
    1.10 +	m4_set_column(res, v4_cons(i.x, i.y, i.z, 1.0), 0);
    1.11 +	m4_set_column(res, v4_cons(j.x, j.y, j.z, 1.0), 1);
    1.12 +	m4_set_column(res, v4_cons(k.x, k.y, k.z, 1.0), 2);
    1.13 +}
    1.14 +
    1.15 +void basis_matrix_dir(mat4_t res, vec3_t dir)
    1.16 +{
    1.17 +	vec3_t k = v3_normalize(dir);
    1.18 +	vec3_t j = {0, 1, 0};
    1.19 +	vec3_t i = v3_cross(j, k);
    1.20 +	j = v3_cross(k, i);
    1.21 +	basis_matrix(res, i, j, k);
    1.22 +}