VRS - The Virtual Rendering System

version 3.3

constraintchecker.h

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/******************************************************************************
 * VRS - The Virtual Rendering System
 * Copyright (C) 2003 Computer Graphics Systems Group at the 
 * Hasso-Plattner-Institute (HPI), 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: constraintchecker.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 1.8  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 1.7  2004/10/28 14:16:01  basch
// Class comment changed (Doxygen style)
//
// Revision 1.6  2004/03/12 16:28:41  baumann
// macros VRS_NAMESPACE_BEGIN/_END expanded and removed
//
// Revision 1.5  2004/02/09 09:48:37  kirsch
// added newline at end of file (fixes gcc warning)
//
// Revision 1.4  2004/01/22 13:53:29  buchholz
// minor changes
//
// Revision 1.3  2004/01/19 11:43:58  baumann
// serialization mechanism improved
//
// Revision 1.2  2003/11/27 08:41:59  kirsch
// gcc warnings fixed
//
// Revision 1.1  2003/11/26 15:06:04  buchholz
// first check in
//

#ifndef VRS_CONSTRAINTCHECKER_H
#define VRS_CONSTRAINTCHECKER_H

#include <vrs/sharedobj.h>
#include <vrs/vector.h>

namespace VRS {

class Constraint;

template<typename T> class Array;
template<typename T> class Deque;
template<typename T> class Stack;

class VRS_CORE_API ConstraintChecker : public SharedObj {

public:
        ConstraintChecker(unsigned int maxIterations = 10);
        virtual ~ConstraintChecker();

        virtual bool check(const Vector& oldPoint, const Vector& desiredPoint);
        virtual Vector* findAlternative(const Vector& oldPoint, const Vector& desiredPoint);
        virtual void prependConstraint(Constraint* newConstraint);
        virtual void appendConstraint(Constraint* newConstraint);
        virtual void insertConstraint(unsigned int pos, Constraint* newConstraint);
        
        virtual void removeFirstConstraint();
        virtual void removeLastConstraint();
        virtual void removeConstraint(Constraint* constraint);

        virtual void moveConstraint(Constraint* constraint, unsigned int newPos);

        virtual void flushConstraints();
        virtual bool contains(Constraint* constraint);
        
        virtual void setMaxIterations(unsigned int maxIterations);
        virtual unsigned int getMaxIterations() const;

        virtual unsigned int getNoOfConstraints() const;

        VRS_TYPEINFO(ConstraintChecker, SharedObj);
        VRS_SERIALIZABLE(ConstraintChecker);

        
private:
        bool checkConstraints(Iterator<SO<Constraint> >* iterator, 
                                                  const Vector& oldPoint, const Vector& desiredPoint, 
                                                  Stack<Vector>* alternativesStack = NULL, unsigned int pos = 0);

        SO<Deque<SO<Constraint> > > constraints_;

        unsigned int maxIterations_;

        SO<Stack<Vector> > alternatives_;
        SO<Array<Vector> > evaluatedPoints_;
};

} // namespace VRS

#endif // VRS_CONSTRAINTCHECKER_H

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