DisplayObject*
DisplayList::getDisplayObjectAtDepth(int depth)
{
testInvariant();
for (iterator it = _charsByDepth.begin(), itEnd = _charsByDepth.end();
it != itEnd; ++it) {
DisplayObject* ch = *it;
// found
if (ch->get_depth() == depth) return ch;
// non-existent (chars are ordered by depth)
if (ch->get_depth() > depth) return 0;
}
return 0;
}
DisplayObject*
DisplayList::getDisplayObjectAtDepth(int depth) const
{
testInvariant();
for (const_iterator it = _charsByDepth.begin(), itEnd = _charsByDepth.end();
it != itEnd; ++it) {
DisplayObject* ch = *it;
// Should not be there!
if (ch->isDestroyed()) continue;
// found
if (ch->get_depth() == depth) return ch;
// non-existent (chars are ordered by depth)
if (ch->get_depth() > depth) return 0;
}
return 0;
}
int
DisplayList::getNextHighestDepth() const
{
testInvariant();
int nexthighestdepth=0;
for (const_iterator it = _charsByDepth.begin(),
itEnd = _charsByDepth.end(); it != itEnd; ++it) {
DisplayObject* ch = *it;
const int chdepth = ch->get_depth();
if (chdepth >= nexthighestdepth) {
nexthighestdepth = chdepth+1;
}
}
return nexthighestdepth;
}