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/*
* $Revision: 3832 $
*
* last checkin:
* $Author: gutwenger $
* $Date: 2013-11-13 11:16:27 +0100 (Wed, 13 Nov 2013) $
***************************************************************/
/** \file
* \brief Declaration of interface hierarchy layout algorithms
* (3. phase of Sugiyama).
*
* \author Carsten Gutwenger
*
* \par License:
* This file is part of the Open Graph Drawing Framework (OGDF).
*
* \par
* Copyright (C)<br>
* See README.txt in the root directory of the OGDF installation for details.
*
* \par
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* Version 2 or 3 as published by the Free Software Foundation;
* see the file LICENSE.txt included in the packaging of this file
* for details.
*
* \par
* This program 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 General Public License for more details.
*
* \par
* You should have received a copy of the GNU General Public
* License along with this program; if not, write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
* \see http://www.gnu.org/copyleft/gpl.html
***************************************************************/
#ifdef _MSC_VER
#pragma once
#endif
#ifndef OGDF_HIER_LAYOUT_MODULE_H
#define OGDF_HIER_LAYOUT_MODULE_H
#include <ogdf/layered/Hierarchy.h>
#include <ogdf/basic/GraphCopyAttributes.h>
//#include <ogdf/layered/HierarchyLevels.h>
#include <ogdf/layered/CrossingMinInterfaces.h>
namespace ogdf {
/**
* \brief Interface of hierarchy layout algorithms.
*
* \see SugiyamaLayout
*/
class OGDF_EXPORT HierarchyLayoutModule {
public:
//! Initializes a hierarchy layout module.
HierarchyLayoutModule() { }
virtual ~HierarchyLayoutModule() { }
/**
* \brief Computes a hierarchy layout of \a H in \a AGA
* @param levels is the input hierarchy.
* @param GA is assigned the hierarchy layout.
*/
void call(const HierarchyLevelsBase &levels, GraphAttributes &GA) {
GraphCopyAttributes AGC(levels.hierarchy(),GA);
doCall(levels,AGC);
AGC.transform();
}
//
// * \brief Computes a hierarchy layout of \a H in \a AG.
// * @param H is the input hierarchy.
// * @param AG is assigned the hierarchy layout.
// */
//void call(Hierarchy& H, GraphAttributes &AG) {
// GraphCopyAttributes AGC(H,AG);
// doCall(H,AGC);
// HierarchyLayoutModule::dynLayerDistance(AGC, H);
// HierarchyLayoutModule::addBends(AGC, H);
// AGC.transform();
//}
//
// * \brief Computes a hierarchy layout of \a H in \a AG.
// * @param H is the input hierarchy.
// * @param AG is assigned the hierarchy layout.
// * @param AGC is GraphCopyAttribute init. with H and AG
// */
//void call(const Hierarchy& H, GraphAttributes &, GraphCopyAttributes &AGC) {
// doCall(H,AGC);
//}
//! Adds bends to edges for avoiding crossings with nodes.
//static void addBends(GraphCopyAttributes &AGC, HierarchyLevels &levels);
static void dynLayerDistance(GraphCopyAttributes &AGC, HierarchyLevelsBase &levels);
private:
//! after calling, ci (cj) contains the number of nodes of level i (j=i-1) which overlap the edge (s,t)
static void overlap(GraphCopyAttributes &AGC, HierarchyLevelsBase &levels, node s, node t, int i, int &ci, int &cj);
protected:
/**
* \brief Implements the actual algorithm call.
*
* Must be implemented by derived classes.
*
* @param levels is the input hierarchy.
* @param AGC has to be assigned the hierarchy layout.
*/
virtual void doCall(const HierarchyLevelsBase &levels, GraphCopyAttributes &AGC) = 0;
OGDF_MALLOC_NEW_DELETE
};
} // end namespace ogdf
#endif
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