GraphGenerator.h

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// *****************************************************************
// Filename:    GraphGenerator.h
// Copyright:   Kai Welke, Chair Prof. Dillmann (IAIM),
//              Institute for Computer Science and Engineering (CSE),
//              University of Karlsruhe. All rights reserved.
// Author:      Kai Welke
// Date:        08.07.2008
// *****************************************************************
 
#pragma once
 
// *****************************************************************
// includes
// *****************************************************************
#include <float.h>
 
#include <vector>
 
#include "Base/DataStructures/Graph/SphericalGraph.h"
#include "Base/Math/MathTools.h"
#include "Math/Math3d.h"
 
// *****************************************************************
// enums
// *****************************************************************
enum EPolyhedronType
{
    eTetrahedron,
    eOctahedron,
    eIcosahedron
};
 
// *****************************************************************
// implementation of class Face
// *****************************************************************
class Face
{
public:
    Face(){};
 
    Face(int n1, int n2, int n3)
    {
        set(n1, n2, n3);
    };
 
    ~Face(){};
 
    void
    set(int n1, int n2, int n3)
    {
        m_n1 = n1;
        m_n2 = n2;
        m_n3 = n3;
    };
 
    int m_n1;
    int m_n2;
    int m_n3;
};
 
// *****************************************************************
// implementation of CGraphGenerator
// *****************************************************************
class CGraphGenerator
{
public:
    static void generateGraph(CSphericalGraph* pPlainGraph,
                              EPolyhedronType nBaseType,
                              int nLevels,
                              float fRadius);
 
private:
    static void initBasePolyhedron(EPolyhedronType nBaseType);
    static void generateTetrahedron();
    static void generateOctahedron();
    static void generateIcosahedron();
    static void subDivide();
    static void projectToSphere(float fRadius);
    static void buildNodesAndEdges(CSphericalGraph* pGraph);
    static int findVertex(Vec3d position, float fEpsilon);
 
private:
    CGraphGenerator(){};
    ~CGraphGenerator(){};
 
    static vector<Vec3d> m_Vertices;
    static vector<Face> m_Faces;
};