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791 lines
30 KiB
Plaintext
791 lines
30 KiB
Plaintext
// Filename: pandaNode.I
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// Created by: drose (20Feb02)
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//
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////////////////////////////////////////////////////////////////////
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//
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// PANDA 3D SOFTWARE
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// Copyright (c) 2001 - 2004, Disney Enterprises, Inc. All rights reserved
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//
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// All use of this software is subject to the terms of the Panda 3d
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// Software license. You should have received a copy of this license
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// along with this source code; you will also find a current copy of
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// the license at http://etc.cmu.edu/panda3d/docs/license/ .
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//
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// To contact the maintainers of this program write to
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// panda3d-general@lists.sourceforge.net .
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//
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////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////
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// Function: PandaNode::DownConnection::Constructor
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// Access: Public
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// Description:
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////////////////////////////////////////////////////////////////////
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INLINE PandaNode::DownConnection::
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DownConnection(PandaNode *child, int sort) :
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_child(child),
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_sort(sort)
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{
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}
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////////////////////////////////////////////////////////////////////
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// Function: PandaNode::DownConnection::operator <
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// Access: Public
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// Description: Provides a partial ordering on the children of a node
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// so that they are ranked first in sort order, and then
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// (by virtue of the ordered_vector) in the order they
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// were added.
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////////////////////////////////////////////////////////////////////
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INLINE bool PandaNode::DownConnection::
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operator < (const DownConnection &other) const {
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return _sort < other._sort;
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}
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////////////////////////////////////////////////////////////////////
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// Function: PandaNode::DownConnection::get_child
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// Access: Public
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// Description:
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////////////////////////////////////////////////////////////////////
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INLINE PandaNode *PandaNode::DownConnection::
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get_child() const {
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return _child;
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}
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////////////////////////////////////////////////////////////////////
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// Function: PandaNode::DownConnection::set_child
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// Access: Public
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// Description: This is only called by PandaNode::replace_child().
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////////////////////////////////////////////////////////////////////
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INLINE void PandaNode::DownConnection::
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set_child(PandaNode *child) {
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_child = child;
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}
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////////////////////////////////////////////////////////////////////
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// Function: PandaNode::DownConnection::get_sort
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// Access: Public
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// Description:
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////////////////////////////////////////////////////////////////////
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INLINE int PandaNode::DownConnection::
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get_sort() const {
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return _sort;
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}
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////////////////////////////////////////////////////////////////////
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// Function: PandaNode::UpConnection::Constructor
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// Access: Public
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// Description:
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////////////////////////////////////////////////////////////////////
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INLINE PandaNode::UpConnection::
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UpConnection(PandaNode *parent) :
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_parent(parent)
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{
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}
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////////////////////////////////////////////////////////////////////
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// Function: PandaNode::UpConnection::operator <
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// Access: Public
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// Description: Sorts the up connections of a node by pointer. This
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// is different from the down connections of a node,
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// which are sorted by the specified _sort number. This
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// makes it easy to locate a particular parent of a node
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// by pointer, or to test for a parent-child
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// relationship given two node pointers.
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////////////////////////////////////////////////////////////////////
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INLINE bool PandaNode::UpConnection::
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operator < (const UpConnection &other) const {
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return _parent < other._parent;
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}
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////////////////////////////////////////////////////////////////////
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// Function: PandaNode::UpConnection::get_parent
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// Access: Public
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// Description:
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////////////////////////////////////////////////////////////////////
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INLINE PandaNode *PandaNode::UpConnection::
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get_parent() const {
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return _parent;
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}
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////////////////////////////////////////////////////////////////////
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// Function: PandaNode::CData::Constructor
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// Access: Public
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// Description:
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////////////////////////////////////////////////////////////////////
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INLINE PandaNode::CData::
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CData() {
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_state = RenderState::make_empty();
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_effects = RenderEffects::make_empty();
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_transform = TransformState::make_identity();
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_prev_transform = TransformState::make_identity();
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_draw_mask = DrawMask::all_on();
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_into_collide_mask = CollideMask::all_off();
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_net_collide_mask = CollideMask::all_off();
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_stale_child_cache = true;
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_fixed_internal_bound = false;
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}
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////////////////////////////////////////////////////////////////////
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// Function: PandaNode::Children::Constructor
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// Access: Public
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// Description:
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////////////////////////////////////////////////////////////////////
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INLINE PandaNode::Children::
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Children(const PandaNode::CDReader &cdata) :
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_cdata(cdata)
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{
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}
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////////////////////////////////////////////////////////////////////
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// Function: PandaNode::Children::Copy Constructor
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// Access: Public
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// Description:
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////////////////////////////////////////////////////////////////////
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INLINE PandaNode::Children::
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Children(const PandaNode::Children ©) :
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_cdata(copy._cdata)
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{
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}
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////////////////////////////////////////////////////////////////////
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// Function: PandaNode::Children::Copy Assignment Operator
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// Access: Public
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// Description:
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////////////////////////////////////////////////////////////////////
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INLINE void PandaNode::Children::
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operator = (const PandaNode::Children ©) {
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_cdata = copy._cdata;
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}
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////////////////////////////////////////////////////////////////////
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// Function: PandaNode::Children::get_num_children
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// Access: Public
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// Description: Returns the number of children of the node.
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////////////////////////////////////////////////////////////////////
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INLINE int PandaNode::Children::
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get_num_children() const {
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return _cdata->_down.size();
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}
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////////////////////////////////////////////////////////////////////
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// Function: PandaNode::Children::get_child
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// Access: Public
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// Description: Returns the nth child of the node.
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////////////////////////////////////////////////////////////////////
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INLINE PandaNode *PandaNode::Children::
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get_child(int n) const {
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nassertr(n >= 0 && n < (int)_cdata->_down.size(), NULL);
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return _cdata->_down[n].get_child();
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}
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////////////////////////////////////////////////////////////////////
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// Function: PandaNode::ChildrenCopy::Copy Constructor
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// Access: Public
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// Description:
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////////////////////////////////////////////////////////////////////
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INLINE PandaNode::ChildrenCopy::
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ChildrenCopy(const PandaNode::ChildrenCopy ©) :
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_list(copy._list)
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{
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}
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////////////////////////////////////////////////////////////////////
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// Function: PandaNode::ChildrenCopy::Copy Assignment Operator
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// Access: Public
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// Description:
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////////////////////////////////////////////////////////////////////
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INLINE void PandaNode::ChildrenCopy::
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operator = (const PandaNode::ChildrenCopy ©) {
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_list = copy._list;
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}
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////////////////////////////////////////////////////////////////////
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// Function: PandaNode::ChildrenCopy::get_num_children
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// Access: Public
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// Description: Returns the number of children of the node.
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////////////////////////////////////////////////////////////////////
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INLINE int PandaNode::ChildrenCopy::
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get_num_children() const {
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return _list.size();
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}
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////////////////////////////////////////////////////////////////////
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// Function: PandaNode::ChildrenCopy::get_child
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// Access: Public
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// Description: Returns the nth child of the node.
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////////////////////////////////////////////////////////////////////
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INLINE PandaNode *PandaNode::ChildrenCopy::
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get_child(int n) const {
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nassertr(n >= 0 && n < (int)_list.size(), NULL);
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return _list[n];
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}
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////////////////////////////////////////////////////////////////////
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// Function: PandaNode::get_num_parents
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// Access: Published
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// Description: Returns the number of parent nodes this node has. If
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// this number is greater than 1, the node has been
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// multiply instanced. The order of the parent nodes is
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// not meaningful and is not related to the order in
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// which the node was instanced to them.
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////////////////////////////////////////////////////////////////////
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INLINE int PandaNode::
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get_num_parents() const {
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CDReader cdata(_cycler);
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return cdata->_up.size();
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}
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////////////////////////////////////////////////////////////////////
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// Function: PandaNode::get_parent
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// Access: Published
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// Description: Returns the nth parent node of this node. See
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// get_num_parents().
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////////////////////////////////////////////////////////////////////
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INLINE PandaNode *PandaNode::
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get_parent(int n) const {
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CDReader cdata(_cycler);
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nassertr(n >= 0 && n < (int)cdata->_up.size(), NULL);
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return cdata->_up[n].get_parent();
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}
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////////////////////////////////////////////////////////////////////
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// Function: PandaNode::find_parent
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// Access: Published
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// Description: Returns the index of the indicated parent node, if it
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// is a parent, or -1 if it is not.
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////////////////////////////////////////////////////////////////////
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INLINE int PandaNode::
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find_parent(PandaNode *node) const {
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CDReader cdata(_cycler);
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return do_find_parent(node, cdata);
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}
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////////////////////////////////////////////////////////////////////
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// Function: PandaNode::get_num_children
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// Access: Published
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// Description: Returns the number of child nodes this node has. The
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// order of the child nodes *is* meaningful and is based
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// on the sort number that was passed to add_child(),
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// and also on the order in which the nodes were added.
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////////////////////////////////////////////////////////////////////
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INLINE int PandaNode::
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get_num_children() const {
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CDReader cdata(_cycler);
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return cdata->_down.size();
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}
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////////////////////////////////////////////////////////////////////
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// Function: PandaNode::get_child
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// Access: Published
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// Description: Returns the nth child node of this node. See
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// get_num_children().
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////////////////////////////////////////////////////////////////////
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INLINE PandaNode *PandaNode::
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get_child(int n) const {
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CDReader cdata(_cycler);
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nassertr(n >= 0 && n < (int)cdata->_down.size(), NULL);
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return cdata->_down[n].get_child();
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}
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////////////////////////////////////////////////////////////////////
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// Function: PandaNode::get_child_sort
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// Access: Published
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// Description: Returns the sort index of the nth child node of this
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// node (that is, the number that was passed to
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// add_child()). See get_num_children().
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////////////////////////////////////////////////////////////////////
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INLINE int PandaNode::
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get_child_sort(int n) const {
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CDReader cdata(_cycler);
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nassertr(n >= 0 && n < (int)cdata->_down.size(), -1);
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return cdata->_down[n].get_sort();
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}
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////////////////////////////////////////////////////////////////////
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// Function: PandaNode::find_child
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// Access: Published
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// Description: Returns the index of the indicated child node, if it
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// is a child, or -1 if it is not.
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////////////////////////////////////////////////////////////////////
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INLINE int PandaNode::
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find_child(PandaNode *node) const {
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CDReader cdata(_cycler);
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return do_find_child(node, cdata);
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}
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////////////////////////////////////////////////////////////////////
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// Function: PandaNode::remove_child
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// Access: Published
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// Description: Removes the nth child from the node.
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////////////////////////////////////////////////////////////////////
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INLINE void PandaNode::
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remove_child(int n) {
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CDWriter cdata(_cycler);
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nassertv(n >= 0 && n < (int)cdata->_down.size());
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PT(PandaNode) child_node = cdata->_down[n].get_child();
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CDWriter cdata_child(child_node->_cycler);
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do_remove_child(n, child_node,
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Thread::get_current_pipeline_stage(),
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cdata, cdata_child);
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}
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////////////////////////////////////////////////////////////////////
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// Function: PandaNode::stash_child
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// Access: Published
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// Description: Stashes the indicated child node. This removes the
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// child from the list of active children and puts it on
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// a special list of stashed children. This child node
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// no longer contributes to the bounding volume of the
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// PandaNode, and is not visited in normal traversals.
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// It is invisible and uncollidable. The child may
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// later be restored by calling unstash_child().
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//
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// This function returns true if the child node was
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// successfully stashed, or false if it was not a child
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// of the node in the first place (e.g. it was
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// previously stashed).
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////////////////////////////////////////////////////////////////////
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INLINE bool PandaNode::
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stash_child(PandaNode *child_node) {
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int child_index = find_child(child_node);
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if (child_index < 0) {
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return false;
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}
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stash_child(child_index);
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return true;
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}
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////////////////////////////////////////////////////////////////////
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// Function: PandaNode::unstash_child
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// Access: Published
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// Description: Returns the indicated stashed node to normal child
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// status. This removes the child from the list of
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// stashed children and puts it on the normal list of
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// active children. This child node once again
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// contributes to the bounding volume of the PandaNode,
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// and will be visited in normal traversals. It is
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// visible and collidable.
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//
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// This function returns true if the child node was
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// successfully stashed, or false if it was not a child
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// of the node in the first place (e.g. it was
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// previously stashed).
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////////////////////////////////////////////////////////////////////
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INLINE bool PandaNode::
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unstash_child(PandaNode *child_node) {
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int stashed_index = find_stashed(child_node);
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if (stashed_index < 0) {
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return false;
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}
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unstash_child(stashed_index);
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return true;
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}
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////////////////////////////////////////////////////////////////////
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// Function: PandaNode::get_num_stashed
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// Access: Published
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// Description: Returns the number of stashed nodes this node has.
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// These are former children of the node that have been
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// moved to the special stashed list via stash_child().
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////////////////////////////////////////////////////////////////////
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INLINE int PandaNode::
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get_num_stashed() const {
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CDReader cdata(_cycler);
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return cdata->_stashed.size();
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}
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////////////////////////////////////////////////////////////////////
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// Function: PandaNode::get_stashed
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// Access: Published
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// Description: Returns the nth stashed node of this node. See
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// get_num_stashed().
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////////////////////////////////////////////////////////////////////
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INLINE PandaNode *PandaNode::
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get_stashed(int n) const {
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CDReader cdata(_cycler);
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nassertr(n >= 0 && n < (int)cdata->_stashed.size(), NULL);
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return cdata->_stashed[n].get_child();
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}
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////////////////////////////////////////////////////////////////////
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// Function: PandaNode::get_stashed_sort
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// Access: Published
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// Description: Returns the sort index of the nth stashed node of this
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// node (that is, the number that was passed to
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// add_child()). See get_num_stashed().
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////////////////////////////////////////////////////////////////////
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INLINE int PandaNode::
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get_stashed_sort(int n) const {
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CDReader cdata(_cycler);
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nassertr(n >= 0 && n < (int)cdata->_stashed.size(), -1);
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return cdata->_stashed[n].get_sort();
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}
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////////////////////////////////////////////////////////////////////
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// Function: PandaNode::find_stashed
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// Access: Published
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// Description: Returns the index of the indicated stashed node, if
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// it is a stashed child, or -1 if it is not.
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////////////////////////////////////////////////////////////////////
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INLINE int PandaNode::
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find_stashed(PandaNode *node) const {
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CDReader cdata(_cycler);
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return do_find_stashed(node, cdata);
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}
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////////////////////////////////////////////////////////////////////
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// Function: PandaNode::remove_stashed
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// Access: Published
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// Description: Removes the nth stashed child from the node.
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////////////////////////////////////////////////////////////////////
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INLINE void PandaNode::
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remove_stashed(int n) {
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CDWriter cdata(_cycler);
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nassertv(n >= 0 && n < (int)cdata->_stashed.size());
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PT(PandaNode) child_node = cdata->_stashed[n].get_child();
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CDWriter cdata_child(child_node->_cycler);
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do_remove_stashed(n, child_node, Thread::get_current_pipeline_stage(),
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cdata, cdata_child);
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}
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////////////////////////////////////////////////////////////////////
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// Function: PandaNode::get_attrib
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// Access: Published
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// Description: Returns the render attribute of the indicated type,
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// if it is defined on the node, or NULL if it is not.
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// This checks only what is set on this particular node
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// level, and has nothing to do with what render
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// attributes may be inherited from parent nodes.
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////////////////////////////////////////////////////////////////////
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INLINE const RenderAttrib *PandaNode::
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get_attrib(TypeHandle type) const {
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CDReader cdata(_cycler);
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int index = cdata->_state->find_attrib(type);
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if (index >= 0) {
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return cdata->_state->get_attrib(index);
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}
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return NULL;
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}
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////////////////////////////////////////////////////////////////////
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// Function: PandaNode::has_attrib
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// Access: Published
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// Description: Returns true if there is a render attribute of the
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// indicated type defined on this node, or false if
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// there is not.
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////////////////////////////////////////////////////////////////////
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INLINE bool PandaNode::
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has_attrib(TypeHandle type) const {
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CDReader cdata(_cycler);
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int index = cdata->_state->find_attrib(type);
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return (index >= 0);
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}
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////////////////////////////////////////////////////////////////////
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// Function: PandaNode::get_effect
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// Access: Published
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// Description: Returns the render effect of the indicated type,
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// if it is defined on the node, or NULL if it is not.
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////////////////////////////////////////////////////////////////////
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INLINE const RenderEffect *PandaNode::
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get_effect(TypeHandle type) const {
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CDReader cdata(_cycler);
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int index = cdata->_effects->find_effect(type);
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if (index >= 0) {
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return cdata->_effects->get_effect(index);
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}
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return NULL;
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}
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////////////////////////////////////////////////////////////////////
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// Function: PandaNode::has_effect
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// Access: Published
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// Description: Returns true if there is a render effect of the
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// indicated type defined on this node, or false if
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// there is not.
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////////////////////////////////////////////////////////////////////
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INLINE bool PandaNode::
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has_effect(TypeHandle type) const {
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CDReader cdata(_cycler);
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int index = cdata->_effects->find_effect(type);
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return (index >= 0);
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}
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////////////////////////////////////////////////////////////////////
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// Function: PandaNode::get_state
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// Access: Published
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// Description: Returns the complete RenderState that will be applied
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// to all nodes at this level and below, as set on this
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// node. This returns only the RenderState set on this
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// particular node, and has nothing to do with state
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// that might be inherited from above.
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////////////////////////////////////////////////////////////////////
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INLINE const RenderState *PandaNode::
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get_state() const {
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CDReader cdata(_cycler);
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return cdata->_state;
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}
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////////////////////////////////////////////////////////////////////
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// Function: PandaNode::get_effects
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// Access: Published
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// Description: Returns the complete RenderEffects that will be
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// applied to this node.
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////////////////////////////////////////////////////////////////////
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INLINE const RenderEffects *PandaNode::
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get_effects() const {
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CDReader cdata(_cycler);
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return cdata->_effects;
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}
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////////////////////////////////////////////////////////////////////
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// Function: PandaNode::get_transform
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// Access: Published
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// Description: Returns the transform that has been set on this
|
|
// particular node. This is not the net transform from
|
|
// the root, but simply the transform on this particular
|
|
// node.
|
|
////////////////////////////////////////////////////////////////////
|
|
INLINE const TransformState *PandaNode::
|
|
get_transform() const {
|
|
CDReader cdata(_cycler);
|
|
return cdata->_transform;
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
// Function: PandaNode::get_prev_transform
|
|
// Access: Published
|
|
// Description: Returns the transform that has been set as this
|
|
// node's "previous" position. See
|
|
// set_prev_transform().
|
|
////////////////////////////////////////////////////////////////////
|
|
INLINE const TransformState *PandaNode::
|
|
get_prev_transform() const {
|
|
CDReader cdata(_cycler);
|
|
return cdata->_prev_transform;
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
// Function: PandaNode::get_tag
|
|
// Access: Published
|
|
// Description: Retrieves the user-defined value that was previously
|
|
// set on this node for the particular key, if any. If
|
|
// no value has been previously set, returns the empty
|
|
// string.
|
|
////////////////////////////////////////////////////////////////////
|
|
INLINE string PandaNode::
|
|
get_tag(const string &key) const {
|
|
CDReader cdata(_cycler);
|
|
TagData::const_iterator ti;
|
|
ti = cdata->_tag_data.find(key);
|
|
if (ti != cdata->_tag_data.end()) {
|
|
return (*ti).second;
|
|
}
|
|
return string();
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
// Function: PandaNode::has_tag
|
|
// Access: Published
|
|
// Description: Returns true if a value has been defined on this node
|
|
// for the particular key (even if that value is the
|
|
// empty string), or false if no value has been set.
|
|
////////////////////////////////////////////////////////////////////
|
|
INLINE bool PandaNode::
|
|
has_tag(const string &key) const {
|
|
CDReader cdata(_cycler);
|
|
TagData::const_iterator ti;
|
|
ti = cdata->_tag_data.find(key);
|
|
return (ti != cdata->_tag_data.end());
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
// Function: PandaNode::has_tags
|
|
// Access: Published
|
|
// Description: Returns true if the node has any tags (or any Python
|
|
// tags) at all, false if it has none.
|
|
////////////////////////////////////////////////////////////////////
|
|
INLINE bool PandaNode::
|
|
has_tags() const {
|
|
CDReader cdata(_cycler);
|
|
if (!cdata->_tag_data.empty()) {
|
|
return true;
|
|
}
|
|
#ifdef HAVE_PYTHON
|
|
if (!cdata->_python_tag_data.empty()) {
|
|
return true;
|
|
}
|
|
#endif // HAVE_PYTHON
|
|
return false;
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
// Function: PandaNode::ls
|
|
// Access: Published
|
|
// Description: Lists all the nodes at and below the current path
|
|
// hierarchically.
|
|
////////////////////////////////////////////////////////////////////
|
|
INLINE void PandaNode::
|
|
ls(ostream &out, int indent_level) const {
|
|
r_list_descendants(out, indent_level);
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
// Function: PandaNode::get_draw_mask
|
|
// Access: Published
|
|
// Description: Returns the hide/show bits of this particular node.
|
|
// See set_draw_mask().
|
|
////////////////////////////////////////////////////////////////////
|
|
INLINE DrawMask PandaNode::
|
|
get_draw_mask() const {
|
|
CDReader cdata(_cycler);
|
|
return cdata->_draw_mask;
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
// Function: PandaNode::get_into_collide_mask
|
|
// Access: Published
|
|
// Description: Returns the "into" collide mask for this node.
|
|
////////////////////////////////////////////////////////////////////
|
|
INLINE CollideMask PandaNode::
|
|
get_into_collide_mask() const {
|
|
CDReader cdata(_cycler);
|
|
return cdata->_into_collide_mask;
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
// Function: PandaNode::get_bound
|
|
// Access: Published
|
|
// Description: Returns the node's external bounding volume. This is
|
|
// the bounding volume around the node and all of its
|
|
// children.
|
|
////////////////////////////////////////////////////////////////////
|
|
INLINE const BoundingVolume *PandaNode::
|
|
get_bound() const {
|
|
return BoundedObject::get_bound();
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
// Function: PandaNode::get_bound
|
|
// Access: Published
|
|
// Description: Returns the node's external bounding volume. This is
|
|
// the bounding volume around the node and all of its
|
|
// children.
|
|
////////////////////////////////////////////////////////////////////
|
|
INLINE const BoundingVolume *PandaNode::
|
|
get_bound(int pipeline_stage) const {
|
|
return BoundedObject::get_bound(pipeline_stage);
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
// Function: PandaNode::get_internal_bound
|
|
// Access: Published
|
|
// Description: Returns the node's internal bounding volume. This is
|
|
// the bounding volume around the node alone, without
|
|
// including children.
|
|
////////////////////////////////////////////////////////////////////
|
|
INLINE const BoundingVolume *PandaNode::
|
|
get_internal_bound() const {
|
|
int pipeline_stage = Thread::get_current_pipeline_stage();
|
|
return get_internal_bound(pipeline_stage);
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
// Function: PandaNode::get_internal_bound
|
|
// Access: Published
|
|
// Description: Returns the node's internal bounding volume. This is
|
|
// the bounding volume around the node alone, without
|
|
// including children.
|
|
////////////////////////////////////////////////////////////////////
|
|
INLINE const BoundingVolume *PandaNode::
|
|
get_internal_bound(int pipeline_stage) const {
|
|
CDStageReader cdata(_cycler, pipeline_stage);
|
|
if (!cdata->_fixed_internal_bound &&
|
|
(is_bound_stale(pipeline_stage) ||
|
|
_internal_bound.is_bound_stale(pipeline_stage))) {
|
|
((PandaNode *)this)->recompute_internal_bound(pipeline_stage);
|
|
}
|
|
return _internal_bound.get_bound(pipeline_stage);
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
// Function: PandaNode::changed_internal_bound
|
|
// Access: Protected
|
|
// Description: Should be called whenever you adjust the
|
|
// _internal_bound member, to force the external
|
|
// bounding volume to be recomputed.
|
|
////////////////////////////////////////////////////////////////////
|
|
INLINE void PandaNode::
|
|
changed_internal_bound(int pipeline_stage) {
|
|
BoundedObject::mark_bound_stale(pipeline_stage);
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
// Function: PandaNode::get_children
|
|
// Access: Public
|
|
// Description: Returns an object that can be used to walk through
|
|
// the list of children of the node. When you intend to
|
|
// visit multiple children, using this is slightly
|
|
// faster than calling get_child() directly on the
|
|
// PandaNode, since this object keeps the PipelineCycler
|
|
// open the whole time.
|
|
//
|
|
// However, this object does not protect you from
|
|
// self-modifying loops (e.g. adding or removing
|
|
// children during traversal).
|
|
////////////////////////////////////////////////////////////////////
|
|
INLINE PandaNode::Children PandaNode::
|
|
get_children() const {
|
|
CDReader cdata(_cycler);
|
|
return Children(cdata);
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
// Function: PandaNode::get_children_copy
|
|
// Access: Public
|
|
// Description: Returns an object that can be used to walk through
|
|
// the list of children of the node. Unlike
|
|
// get_children(), this function actually returns an
|
|
// object that protects you from self-modifying loops,
|
|
// because it makes and returns a copy of the complete
|
|
// children list.
|
|
////////////////////////////////////////////////////////////////////
|
|
INLINE PandaNode::ChildrenCopy PandaNode::
|
|
get_children_copy() const {
|
|
CDReader cdata(_cycler);
|
|
return ChildrenCopy(cdata);
|
|
}
|
|
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
// Function: PandaNode::mark_child_cache_stale
|
|
// Access: Private
|
|
// Description: Indicates that the _child_cache value that is
|
|
// propagated upwards has changed for this node.
|
|
////////////////////////////////////////////////////////////////////
|
|
INLINE void PandaNode::
|
|
mark_child_cache_stale(int pipeline_stage, CData *cdata) {
|
|
if (!cdata->_stale_child_cache) {
|
|
force_child_cache_stale(pipeline_stage, cdata);
|
|
}
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
// Function: PandaNode::do_find_parent
|
|
// Access: Private
|
|
// Description: The private implementation of find_parent().
|
|
////////////////////////////////////////////////////////////////////
|
|
INLINE int PandaNode::
|
|
do_find_parent(PandaNode *node, const CData *cdata) const {
|
|
Up::const_iterator ui = cdata->_up.find(UpConnection(node));
|
|
if (ui == cdata->_up.end()) {
|
|
return -1;
|
|
}
|
|
return ui - cdata->_up.begin();
|
|
}
|