/*!
    \file proto_class.h
 *  Definition of ...

 */

#ifndef _QUADTREE_NODE_H
#define _QUADTREE_NODE_H

#include "base_object.h"
#include "vector.h"
#include "abstract_model.h"

// FORWARD DEFINITION
class Quadtree;


//! A class for a Quadtree Node representation
class QuadtreeNode : public BaseObject {

  public:
    QuadtreeNode(sTriangleExt** triangles, int numTriangles,
                 const float* pVertices, int numVertices,
                 Quadtree* quadtree, QuadtreeNode* parent,
                 Rectangle* rect, int treeDepth, const int maxDepth, int index);
    QuadtreeNode(modelInfo* pModelInfo, Quadtree* quadtree, const int maxDepth);
    virtual ~QuadtreeNode();

    void buildHashTable(QuadtreeNode** nodeList, int* index);

    float getHeight(const Vector& position);
    Rectangle* getDimension() { return this->pDimension; }

    void drawTree(int depth, int drawMode) const;


  private:
    void init();

    void separateNode(float minLength);
    void separateNode();

    Rectangle* getDimFromModel();

  protected:
    QuadtreeNode*                   parent;             //!< reference to the paren QuadtreeNode (NULL if rootnode)
    QuadtreeNode*                   nodeA;              //!< reference to the node A
    QuadtreeNode*                   nodeB;              //!< reference to the node B
    QuadtreeNode*                   nodeC;              //!< reference to the node C
    QuadtreeNode*                   nodeD;              //!< reference to the node D
    QuadtreeNode**                  nodes;              //!< reference to the quadtree nodes
    int                             nodeIter;           //!< temp helping variable for the hashing algorithm

  private:
    Quadtree*                       quadtree;           //!< reference to the quadtree
    Vector                          center;             //!< center coordinate of the quadtree node - relative coordinates in model space(!)
    float                           axisLength;         //!< axis length of the quadtree
    float                           maxHeigth;          //!< max height of the model in the quadtree
    float                           offset;             //!< offset of the actual quadtree rectangle

    int                             treeDepth;          //!< the depth of the tree
    int                             maxDepth;           //!< the maximal depth of the tree
    int                             indexNode;          //!< the index number of the node

    sTriangleExt**                  pTriangles;         //!< reference to the triangles of the node
    const float*                    pVertices;          //!< reference to vertices data
    unsigned int                    numTriangles;       //!< number of triangles of the Node
    unsigned int                    numVertices;        //!< number of vertices of the node
    modelInfo*                      pModelInfo;         //!< reference to the modelInfo of the object
    Rectangle*                      pDimension;         //!< pointer to the local rectangle properties
};

#endif /* _QUADTREE_NODE_H */