VRS - The Virtual Rendering System

version 3.3

behaviornode.h

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 /**********************************************************************
 VRS - The Virtual Rendering System
 Copyright (C) 2001 Computer Graphics Systems Group at the 
 Hasso-Plattner-Institute, Potsdam, Germany.
 This library is free software; you can redistribute it and/or 
 modify it under the terms of the GNU Lesser General Public 
 License as published by the Free Software Foundation; either 
 version 2.1 of the License, or (at your option) any later version.
 This library is distributed in the hope that it will be useful, but 
 WITHOUT ANY WARRANTY; without even the implied warranty of 
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
 See the GNU Lesser General Public License for more details.
 You should have received a copy of the GNU Lesser+ General Public
 License along with this library; if not, write to the FreeSoftware 
 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA, 02111-1307, USA.
 **********************************************************************/
// $Id: behaviornode.h 6014 2007-08-09 07:51:16Z Konstantin_Baumann $
// $Date: 2007-08-09 09:51:16 +0200 (Thu, 09 Aug 2007) $
// $Revision: 6014 $
// $State$
// $Author: Konstantin_Baumann $
//
// $Log$
// Revision 1.24  2005/01/03 01:43:10  klimetschek
// - modified win32 project layout, splitted vrs.vcproj into vrs_container, vrs_core, vrs_sg, vrs_image, vrs_opengl and vrs_io
// - removed vrs.vcproj
// minor things:
// - added all glutexamples to vrs4glut.sln
// - fixed some problems in glutexamples
// - removed all project references from all VS projects (using solution wide project dependencies instead)
//
// Revision 1.23  2004/10/28 14:16:00  basch
// Class comment changed (Doxygen style)
//
// Revision 1.22  2004/07/23 18:41:31  baumann
// - behavior nodes are now active by default!
// - inactive behavior nodes are not evaluated anymore!
//
// Revision 1.21  2004/03/12 16:28:41  baumann
// macros VRS_NAMESPACE_BEGIN/_END expanded and removed
//
// Revision 1.20  2004/02/16 16:42:08  baumann
// - moved class VRS::SceneNode from "vrs/sg/" to "vrs/"
// - renamed class VRS::SceneGraphVisitor to class VRS::SceneNodeVisitor
//     and moved it from "vrs/sg/" to "vrs/"
//
// Revision 1.19  2004/01/19 11:43:58  baumann
// serialization mechanism improved
//
// Revision 1.18  2004/01/19 07:28:03  baumann
// serialization mechanism improved
//
// Revision 1.17  2003/07/22 16:16:03  baumann
// class Visitor renamed to class SceneNodeVisitor
//
// Revision 1.16  2003/02/24 10:05:57  baumann
// changed return type of BehaviorNode::handle() and Manipulator::drag*()
// from "int" to "BehaviorNode::InvalidationHint"
//
// Revision 1.15  2003/01/02 08:46:58  baumann
// code cleanup
//
// Revision 1.14  2002/10/29 10:32:53  baumann
// macros VRS_CLASSNAME_* and VRS_IMPL_TYPEINFO_* removed
//
// Revision 1.13  2002/10/28 17:13:18  buchholz
// SceneNodeVisitor::visitBehavior now returns SceneNodeVisitor::TraversalFlag instead of int.
//
// Revision 1.12  2002/05/15 16:05:11  baumann
// unneeded method BehaviorNode::canHandle() removed (from all sub classes too)
//
// Revision 1.11  2002/03/03 21:44:26  kosta
// VRS_TYPEINFO-macro rewritten
//
// Revision 1.10  2002/02/25 07:22:35  kosta
// TYPEINFO macro improved
//
// Revision 1.9  2002/02/19 10:34:19  kosta
// undone all changes since 2002-02-15
//
// Revision 1.6  2002/02/05 07:48:26  kosta
// new persistency macros:
//     VRS_SERIALIZABLE(CLASS_NAME);
//     VRS_SERIALIZABLE_ABSTRACT_CLASS(CLASS_NAME);
//     VRS_SERIALIZABLE_NO_SO_CLASS(CLASS_NAME)
//
// Revision 1.5  2002/02/04 13:07:19  kosta
// VRS_SERIALIZABLE macros completely rewritten
//
// Revision 1.4  2002/02/04 11:54:37  kosta
// persistency rewritten (for better namespace support)
//
// Revision 1.3  2002/01/15 16:25:55  kosta
// macros rewritten for a better namespace support
//
// Revision 1.2  2001/11/13 16:36:31  kirsch
// changed line feed to unix style (removed control-M)
//
// Revision 1.1.1.1  2001/06/08 08:09:21  kirsch
// imported alpha-version by olli 
//

#ifndef VRS_SG_BEHAVIORNODE_H
#define VRS_SG_BEHAVIORNODE_H

#include <vrs/sg/event.h>
#include <vrs/scenenodevisitor.h>
#include <vrs/sg/timerequirement.h>

namespace VRS {

class VRS_CORE_API BehaviorNode : public SharedObj {
    
public:
    enum Hint {
        NoHint = 0x0000,
        Reset  = 0x0001,
        Begin  = 0x0002,
        End    = 0x0004
    };
    VRS_SERIALIZABLE_CLASS_ENUM(Hint);

    enum State {
        Inactive     = 0x0000,
        Active       = 0x0001 //,
//        Traversal    = 0x0004
    };
    VRS_SERIALIZABLE_CLASS_ENUM(State);

    enum InvalidationHint {
        RedrawNothing = 0x0000,
        RedrawWindow  = 0x0001,
        RedrawWorld   = 0x0002,
        RedrawAll     = 0x0003
    };
    VRS_SERIALIZABLE_CLASS_ENUM(InvalidationHint);
    
    BehaviorNode(State state = BehaviorNode::Active);
    virtual TimeRequirement timeRequirement() const;
    virtual void activate(int hint=BehaviorNode::NoHint);
    virtual void deactivate(int hint=BehaviorNode::NoHint);
    bool isActive() const;
    virtual void setNodeState(State state);
    virtual State getNodeState() const;
    virtual BehaviorNode::InvalidationHint handle(Event* event) = 0;
    virtual SceneNodeVisitor::TraversalFlag traverse(SceneNodeVisitor* visitor);
    VRS_TYPEINFO(BehaviorNode, SharedObj);
    VRS_SERIALIZABLE_ABSTRACT_CLASS(BehaviorNode);
        
private:
    State state_;
};

} // namespace VRS

#endif  // VRS_SG_BEHAVIORNODE_H

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