vbooleancmd.h

/* This file is part of the KDE project
   Copyright (C) 2001, The Karbon Developers
   Copyright (C) 2002, The Karbon Developers
 
   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2 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
   Library General Public License for more details.
 
   You should have received a copy of the GNU Library General Public License
   along with this library; see the file COPYING.LIB.  If not, write to
   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
*/
 
#ifndef __VBOOLEANCMD_H__
#define __VBOOLEANCMD_H__
 
 
#include <tqvaluelist.h>
 
#include "vcommand.h"
 
class VSubpath;
class VSegment;
class VSelection;
 
 
class VBooleanCmd : public VCommand
{
public:
    enum VBooleanType
    {
        intersect,
        shape_union,
        shape_xor,
        substract
    };
 
    VBooleanCmd( VDocument* doc, VBooleanType type = intersect );
    virtual ~VBooleanCmd();
 
    virtual void execute();
    virtual void unexecute();
 
 
    // We can only visit object pairs.
    virtual bool visit( VObject& /*object*/ )
    {
        return false;
    }
 
    // A pair visit() function.
    bool visit( VObject& object1, VObject& object2 );
 
 
    virtual void visitVSubpath( VSubpath& path );
 
protected:
    typedef TQValueList<double> VParamList;
 
    void recursiveSubdivision(
        const VSegment& segment1, double t0_1, double t1_1,
        const VSegment& segment2, double t0_2, double t1_2,
        VParamList& params1, VParamList& params2 );
 
 
    VSelection* m_selection;
 
    VBooleanType m_type;
 
    VSubpath* m_path1;
    VSubpath* m_path2;
};
 
#endif