/* Copyright (c) 2011 Khaled Mamou (kmamou at gmail dot com)
 All rights reserved.
 
 
 Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
 
 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
 
 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
 
 3. The names of the contributors may not be used to endorse or promote products derived from this software without specific prior written permission.
 
 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
#pragma once
#ifndef HACD_GRAPH_H
#define HACD_GRAPH_H
#include "hacdVersion.h"
#include "hacdVector.h"
#include "hacdICHull.h"
#include <map>
#include <vector>
#include <set>

namespace HACD
{
class GraphVertex;
class GraphEdge;
class Graph;
class HACD;

class GraphVertex
{
public:
	bool AddEdge(long name)
	{
		m_edges.insert(name);
		return true;
	}
	bool DeleteEdge(long name);
	GraphVertex();
	~GraphVertex() { delete m_convexHull; };

private:
	long m_name;
	long m_cc;
	std::set<long> m_edges;
	bool m_deleted;
	std::vector<long> m_ancestors;
	std::map<long, DPoint> m_distPoints;

	Real m_error;
	double m_surf;
	double m_volume;
	double m_perimeter;
	double m_concavity;
	ICHull* m_convexHull;
	std::set<unsigned long long> m_boudaryEdges;

	friend class GraphEdge;
	friend class Graph;
	friend class HACD;
};

class GraphEdge
{
public:
	GraphEdge();
	~GraphEdge() { delete m_convexHull; };

private:
	long m_name;
	long m_v1;
	long m_v2;
	std::map<long, DPoint> m_distPoints;
	Real m_error;
	double m_surf;
	double m_volume;
	double m_perimeter;
	double m_concavity;
	ICHull* m_convexHull;
	std::set<unsigned long long> m_boudaryEdges;
	bool m_deleted;

	friend class GraphVertex;
	friend class Graph;
	friend class HACD;
};

class Graph
{
public:
	size_t GetNEdges() const { return m_nE; }
	size_t GetNVertices() const { return m_nV; }
	bool EdgeCollapse(long v1, long v2);
	long AddVertex();
	long AddEdge(long v1, long v2);
	bool DeleteEdge(long name);
	bool DeleteVertex(long name);
	long GetEdgeID(long v1, long v2) const;
	void Clear();
	void Print() const;
	long ExtractCCs();

	Graph();
	virtual ~Graph();
	void Allocate(size_t nV, size_t nE);

private:
	size_t m_nCCs;
	size_t m_nV;
	size_t m_nE;
	std::vector<GraphEdge> m_edges;
	std::vector<GraphVertex> m_vertices;

	friend class HACD;
};
}  // namespace HACD
#endif