/***********************************************************************
* Method : DLhandler::valid
* Params :
* Returns: bool
* Effects:
***********************************************************************/
bool
DLhandler::valid(CVIEWptr &v, int cmp_stamp) const
{
const int view_id = dl_per_view ? v->view_id() : 0;
((DLhandler *) this)->make_dl_stamp_big_enough(view_id);
return ((_dl_stamp_array[view_id] != -1) &&
(_dl_stamp_array[view_id] >= cmp_stamp));
}
/***********************************************************************
* Method : DLhandler::delete_dl
* Params :
* Returns: void
* Effects:
***********************************************************************/
void
DLhandler::delete_dl(CVIEWptr &v)
{
const int view_id = dl_per_view ? v->view_id() : 0;
if (_dl_array.valid_index(view_id)) {
if (_dl_array[view_id]) {
glDeleteLists(_dl_array[view_id], 1);
_dl_array[view_id] = 0;
}
_dl_stamp_array[view_id] = -1;
}
return;
}
/***********************************************************************
* Method : DLhandler::get_dl
* Params :
* Returns: int
* Effects: Gets a display list - if one doesn't already exist, one
* is created
***********************************************************************/
int
DLhandler::get_dl(CVIEWptr &v, int num_dls, int set_stamp)
{
const int view_id = dl_per_view ? v->view_id() : 0;
// If we're all set, don't panic:
if (valid(v, set_stamp))
return _dl_array[view_id];
// Not all set, create a display list:
make_dl_big_enough(view_id);
if (_dl_array[view_id] == 0) {
_dl_array[view_id] = glGenLists(num_dls);
}
make_dl_stamp_big_enough(view_id);
_dl_stamp_array[view_id] = _dl_array[view_id] == 0 ? 0 : set_stamp;
return _dl_array[view_id];
}
/***********************************************************************
* Method : DLhandler::dl
* Params :
* Returns: int
* Effects:
***********************************************************************/
int
DLhandler::dl(CVIEWptr &v) const
{
const int view_id = dl_per_view ? v->view_id() : 0;
return _dl_array[view_id];
}