void s4_concmat(Stack4 *s, Matrix4 *md, Matrix4 *im)
{
*s->mtop = m4_m4prod(*md, *s->mtop );
if ( im == (Matrix4 *)0)
*s->itop = m4_m4prod(*s->itop, m4_inverse(*md));
else
*s->itop = m4_m4prod(*s->itop, *im);
}
void anm_get_inv_matrix(struct anm_node *node, mat4_t mat, anm_time_t tm)
{
struct mat_cache *cache = pthread_getspecific(node->cache_key);
if(!cache) {
cache = malloc(sizeof *cache);
assert(cache);
pthread_mutex_lock(&node->cache_list_lock);
cache->next = node->cache_list;
node->cache_list = cache;
pthread_mutex_unlock(&node->cache_list_lock);
cache->inv_time = ANM_TIME_INVAL;
cache->inv_time = ANM_TIME_INVAL;
pthread_setspecific(node->cache_key, cache);
}
if(cache->inv_time != tm) {
anm_get_matrix(node, mat, tm);
m4_inverse(cache->inv_matrix, mat);
cache->inv_time = tm;
}
m4_copy(mat, cache->inv_matrix);
}
void anm_get_node_inv_matrix(struct anm_node *node, mat4_t mat, anm_time_t tm)
{
mat4_t tmp;
anm_get_node_matrix(node, tmp, tm);
m4_inverse(mat, tmp);
}
void s4_loadmat(Stack4 *s, Matrix4 *md, Matrix4 *im)
{
*s->mtop = *md;
*s->itop = (im == (Matrix4 *)0)? m4_inverse(*md) : *im;
}