68 lines
1.7 KiB
C
68 lines
1.7 KiB
C
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/**
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* PANDA 3D SOFTWARE
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* Copyright (c) Carnegie Mellon University. All rights reserved.
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*
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* All use of this software is subject to the terms of the revised BSD
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* license. You should have received a copy of this license along
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* with this source code in a file named "LICENSE."
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*
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* @file selectiveChildNode.h
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* @author drose
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* @date 2002-03-06
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*/
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#ifndef SELECTIVECHILDNODE_H
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#define SELECTIVECHILDNODE_H
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#include "pandabase.h"
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#include "pandaNode.h"
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/**
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* A base class for nodes like LODNode and SequenceNode that select only one
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* visible child at a time.
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*/
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class EXPCL_PANDA_PGRAPHNODES SelectiveChildNode : public PandaNode {
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PUBLISHED:
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INLINE explicit SelectiveChildNode(const std::string &name);
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protected:
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INLINE SelectiveChildNode(const SelectiveChildNode ©);
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public:
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virtual bool has_selective_visibility() const;
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virtual int get_first_visible_child() const;
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virtual int get_next_visible_child(int n) const;
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protected:
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INLINE void select_child(int n);
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private:
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// Not sure if this should be cycled or not. It's not exactly thread-safe
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// not to cycle it, but it doesn't really need the full pipeline control.
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// It's probably a problem in the non-thread-safe design; need to rethink
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// the design a bit.
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int _selected_child;
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public:
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static TypeHandle get_class_type() {
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return _type_handle;
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}
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static void init_type() {
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PandaNode::init_type();
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register_type(_type_handle, "SelectiveChildNode",
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PandaNode::get_class_type());
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}
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virtual TypeHandle get_type() const {
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return get_class_type();
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}
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virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
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private:
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static TypeHandle _type_handle;
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};
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#include "selectiveChildNode.I"
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#endif
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