//replace gel_old to gel_new.
//If gel_old is not included in this, do nothing.
void mgSys2GL::replace(
const MGGel* gel_old, //gel_old must be a MGCurve.
const MGGel* gel_new //gel_new must be a MGFSurface.
){
if(gel_old==object_id()){
set_object_id(const_cast<MGGel*>(gel_new));
}else{
if(m_gel2==gel_old){
m_gel2=gel_new;
}
}
}
void ObjectHeader::initialize_copy(Object* other, unsigned int new_age) {
/* Even though we dup it, we have to be careful to maintain
* the zone. */
// DO NOT, EVER, CHANGE obj_type_.
// obj_type_ indicates the shape of the object in memory. There are
// f****d up cases where this is called where other is another type
// (that, btw, is likely a bug in itself), but we should never,
// MUST never change obj_type_ to make them match. This causes the GC
// to get confused about the memory shape of the object!
assert(type_id() == other->type_id());
set_age(new_age);
klass_ = other->klass_;
ivars_ = other->ivars_;
#ifdef RBX_OBJECT_ID_IN_HEADER
set_object_id(other->object_id());
#endif
clear_forwarded();
if(other->is_tainted_p()) set_tainted();
}
