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docs: add docs for vec3

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This commit is contained in:
Recep Aslantas
2018-02-26 16:21:04 +03:00
parent 96f773417a
commit 77e62163ea
4 changed files with 285 additions and 8 deletions
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9
include/cglm/vec3.h
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@@ -135,8 +135,8 @@ glm_vec_cross(vec3 a, vec3 b, vec3 d) {
/*!
* @brief norm * norm (magnitude) of vec
*
* we can use this func instead of calling norm * norm, because it would call
* sqrtf fuction twice but with this func we can avoid func call, maybe this is
* we can use this func instead of calling norm * norm, because it would call
* sqrtf fuction twice but with this func we can avoid func call, maybe this is
* not good name for this func
*
* @param[in] v vector
@@ -309,13 +309,16 @@ glm_vec_normalize_to(vec3 vec, vec3 dest) {
/*!
* @brief angle betwen two vector
*
* @param[in] v1 vector1
* @param[in] v2 vector2
*
* @return angle as radians
*/
CGLM_INLINE
float
glm_vec_angle(vec3 v1, vec3 v2) {
float norm;
/* maybe compiler generate approximation instruction (rcp) */
norm = 1.0f / (glm_vec_norm(v1) * glm_vec_norm(v2));
return acosf(glm_vec_dot(v1, v2) * norm);