92 lines
2.9 KiB
C++
92 lines
2.9 KiB
C++
// Filename: bitMaskTransition.h
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// Created by: drose (08Jun00)
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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, 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://www.panda3d.org/license.txt .
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//
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// To contact the maintainers of this program write to
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// panda3d@yahoogroups.com .
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//
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////////////////////////////////////////////////////////////////////
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#ifndef BITMASKTRANSITION_H
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#define BITMASKTRANSITION_H
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#include <pandabase.h>
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#include "nodeTransition.h"
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class NodeRelation;
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////////////////////////////////////////////////////////////////////
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// Class : BitMaskTransition
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// Description : This is an abstract template class that encapsulates
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// transitions on a bitmask. Each transition may add
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// and/or remove bits from the accumulated bitmask.
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//
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// It's the base class for a number of scene graph
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// transitions like DrawMaskTransition and
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// CollideMaskTransition.
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////////////////////////////////////////////////////////////////////
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template<class MaskType>
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class BitMaskTransition : public NodeTransition {
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protected:
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INLINE_GRAPH BitMaskTransition();
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INLINE_GRAPH BitMaskTransition(const MaskType &and, const MaskType &or);
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INLINE_GRAPH BitMaskTransition(const BitMaskTransition ©);
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INLINE_GRAPH void operator = (const BitMaskTransition ©);
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public:
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INLINE_GRAPH void set_and(const MaskType &and);
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INLINE_GRAPH const MaskType &get_and() const;
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INLINE_GRAPH void set_or(const MaskType &or);
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INLINE_GRAPH const MaskType &get_or() const;
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virtual NodeTransition *compose(const NodeTransition *other) const;
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virtual NodeTransition *invert() const;
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virtual void output(ostream &out) const;
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protected:
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virtual int internal_compare_to(const NodeTransition *other) const;
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virtual void internal_generate_hash(GraphHashGenerator &hashgen) const;
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protected:
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virtual BitMaskTransition<MaskType> *
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make_with_masks(const MaskType &and, const MaskType &or) const=0;
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private:
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MaskType _and, _or;
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public:
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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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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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NodeTransition::init_type();
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MaskType::init_type();
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register_type(_type_handle,
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string("BitMaskTransition<") +
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MaskType::get_class_type().get_name() + ">",
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NodeTransition::get_class_type());
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}
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private:
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static TypeHandle _type_handle;
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};
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#include "bitMaskTransition.T"
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#endif
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