//============================================================================
// common.hpp : This class provides the common data structure used for the
//   tree-building code. This class defines an object list where each object
//   is an "indivisible" point set. A point set is an array of points and each
//   point is a 3-element array of floats. The PtSetObjList is given to the
//   tree building code.
//============================================================================

#ifndef _COMMON_
#define _COMMON_

#include "vect3d.hpp"

//----------------------------------------------------------------------------
// OBJECT CLASS (AN INDIVISIBLE OBJECT COMPOSED OF A POINT-LIST: tris, polys, etc.)
//----------------------------------------------------------------------------
class PtSetObj
{
  public:
    Vect3d* Pts;         // THE ARRAY OF POINTS MAKING UP THE OBJECT
    int NumPts;          // NUMBER OF POINTS IN THE ARRAY (ACTUALLY ADDED
    int NumPtsAlloced;   // NUMBER OF POINTS ALLOCATED
    int ID;              // OBJECT ID (THIS WILL BE PASSED TO THE USER-CALLBACKS)

    Vect3d MeanPt;       // THE MEAN PT OR "CENTROID" OF THE POINT LIST

    PtSetObj();          // DEFAULT CONSTRUCTOR AND THE DESTRUCTOR
    ~PtSetObj();
    PtSetObj(int numpts, int id);                    // POINT-LIST OBJECT CONSTRUCTOR
    PtSetObj(int numpts);                            // ID BECOMES PTR TO Vect3d ARRAY
    PtSetObj(Vect3d A, Vect3d B, Vect3d C, int id);  // TRIANGLE OBJECT CONSTRUCTOR (COMMON)
    void AddPt(float x, float y, float z);           // ADDS A POINT TO THE POINT-LIST
    void CalcMean();                                 // CALCULATE MEAN POINT OF THE POINT SET
    void Print();
};

//----------------------------------------------------------------------------
// OBJECT LIST CLASS (LIST OF OBJECTS (i.e. triangles, polygons, surfaces, etc.)
//----------------------------------------------------------------------------
class PtSetObjList
{
  public:
    int* Objs;           // THE ARRAY OF OBJECT PTRS (REMOVED AFTER TREE IS BUILT)
    int NumObjs;         // NUMBER OF OBJECTS IN THE OBJECT LIST (ACTUALLY ADDED)
    int NumObjsAlloced;  // NUMBER OF OBJECTS ALLOCATED

    PtSetObjList(int numobjs);
    PtSetObjList(char* FileName);  // CONSTRUCTOR FOR READING MODEL DIRECTLY FROM TRI FILE
    ~PtSetObjList();
    void AddPtSetObj(PtSetObj* NewPtSetObj);
    void AddTri(Vect3d A, Vect3d B, Vect3d C, int id);
    void Print();
};

#endif