131 lines
4.3 KiB
C++
131 lines
4.3 KiB
C++
/****************************************************************************
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* VCGLib o o *
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* Visual and Computer Graphics Library o o *
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* _ O _ *
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* Copyright(C) 2004 \/)\/ *
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* Visual Computing Lab /\/| *
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* ISTI - Italian National Research Council | *
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* \ *
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* All rights reserved. *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License (http://www.gnu.org/licenses/gpl.txt) *
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* for more details. *
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* *
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****************************************************************************/
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/****************************************************************************
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History
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$Log: not supported by cvs2svn $
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Revision 1.7 2005/02/20 19:49:44 ponchio
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cleaning (a bit more).
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Revision 1.6 2005/02/20 00:43:23 ponchio
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Less memory x extraction. (removed frags)
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Revision 1.5 2005/02/19 16:22:45 ponchio
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Minor changes (visited and Cell)
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Revision 1.4 2005/02/17 16:40:35 ponchio
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Optimized BuildLevels.
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Revision 1.3 2005/02/08 12:43:03 ponchio
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Added copyright
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****************************************************************************/
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#ifndef NXS_HISTORY_H
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#define NXS_HISTORY_H
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#include <vector>
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#include <map>
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//TODO fix a bit better the quick <-> updates duality
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namespace nxs {
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class Nexus;
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class History {
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public:
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enum Mode { QUICK = 1, UPDATES = 2 };
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struct Update {
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std::vector<unsigned int> erased;
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std::vector<unsigned int> created;
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};
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struct Node;
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struct Link {
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Node *node;
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unsigned int begin; //begin patch of the fragment
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unsigned int end; //end patch of the fragment
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typedef unsigned int iterator;
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unsigned int size() { return end - begin; }
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};
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struct Node {
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typedef Link *iterator;
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Link *in_begin, *in_end;
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Link *out_begin, *out_end;
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};
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Node *nodes;
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Link *in_links;
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Link *out_links;
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std::vector<Update> updates;
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History(): nodes(NULL), in_links(NULL), out_links(NULL),// frags(NULL),
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buffer(NULL) {}
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~History();
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Node *Root() { return &nodes[0]; }
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Node *Sink() { return Root() + n_nodes() -1; }
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void Clear();
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void ClearQuick();
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void ClearUpdates();
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//Owns memory afterwards.. do not free mem.
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bool Load(unsigned int size, char *mem);
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bool LoadQuick(unsigned int size, char *mem);
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bool LoadUpdates(unsigned int size, char *mem);
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//after these call history is invalid! and memory returned must be freed...
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char *Save(unsigned int &size); //autodetect
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char *SaveQuick(unsigned int &size);
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char *SaveUpdates(unsigned int &size);
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bool QuickToUpdates();
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bool UpdatesToQuick(Nexus &nexus);
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bool IsQuick() { return buffer != NULL; }
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void BuildLevels(std::vector<int> &levels);
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int &quick() { return ((int *)buffer)[0]; }
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int &n_nodes() { return ((int *)buffer)[1]; }
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int &n_in_links() { return ((int *)buffer)[2]; }
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int &n_out_links() { return ((int *)buffer)[3]; }
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// typedef Node *iterator;
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// iterator begin() { return nodes; }
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// iterator end() { return nodes + n_nodes(); }
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protected:
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unsigned int size;
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char *buffer;
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bool LoadPointers();
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};
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}
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#endif
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