TAPsHelpCreateHalfEdgeModel.hpp

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/******************************************************************************
TAPsHelpCreateHalfEdgeModel.hpp

Help create HalfEdgeModel called by Read Model Classes.

SUKITTI PUNAK   (08/31/2005)
******************************************************************************/
#ifndef TAPs_HELP_CREATE_HALF_EDGE_MODEL_HPP
#define TAPs_HELP_CREATE_HALF_EDGE_MODEL_HPP

// The necessary headers are included in TAPsReadModel.hpp before including 
// this header.
#include "../../GeometricDataStructure/HalfEdge/TAPsHalfEdgeDataStructure.hpp"
#include "../../DataStructure/TAPsHashTableBySTLVector.hpp"

BEGIN_NAMESPACE_TAPs
//=============================================================================
template <typename T> class ReadModels;
//=============================================================================
template <typename T>
class HelpCreateHalfEdgeModel {
public:
    // Create a half-edge model from this class data that has been setup 
    // (allocated and initialized) by an external program and delete 
    // (deallocate the memory of) the data after finishing creating the model
    static void CreateHalfEdgeModel ( OpenGL::HalfEdgeModel<T> * const prModel );
    //-------------------------------------------------------------------------
    // Clear Allocated Memory
    static void ClearAllocatedMemory ( OpenGL::HalfEdgeModel<T> * const prModel );
    //-------------------------------------------------------------------------
    // Create a half-edge from vertex1 to vertex2 incident to face
    // with prev and next half-edges
    static HEHalfEdge<T> * const CreateHalfEdgeFrom ( HEVertex<T>   * const v1,
                                                      HEVertex<T>   * const v2,
                                                      HEFace<T>     * const face,
                                                      HEHalfEdge<T> * const hePrev   = NULL, 
                                                      HEHalfEdge<T> * const heNext   = NULL );
    //-------------------------------------------------------------------------
    // Pair all (non-boundary) half-edges
    static void PairAllHalfEdges ();
    //-------------------------------------------------------------------------
    // Create boundary half-edges
    static void CreateBoundaryHalfEdges ();
    //-------------------------------------------------------------------------
    // Create hole faces
    static void CreateHoleFaces ( OpenGL::HalfEdgeModel<T> * const prModel );
    //-------------------------------------------------------------------------
    // Create a hole face from model's boundary half-edge list
    static void CreateAHoleFace ( OpenGL::HalfEdgeModel<T> * const prModel );
    //-------------------------------------------------------------------------
//-----------------------------------------------------------------------------
// Data Members  --------------------------------------------------------------
public:
    // for half-edge originated vertex look up
    static HEVertex<T> ** vertexList;
    // hash table for vertex ring list
    // used for half-edge pair look up
    static DS::HashTableBySTLVector<int> * vertexRingList;
    // hash table for halfedge ring list
    // used for half-edge pair look up
    static DS::HashTableBySTLVector< HEHalfEdge<T>* > * halfEdgeRingList;
    // (bounday) half-edges on hole faces
    static HEHalfEdge<T> * boundaryHalfEdgePtr;
};
//=============================================================================
END_NAMESPACE_TAPs
//-----------------------------------------------------------------------------
// Include definition if TAPs_USE_EXPORT is not defined
//#if !defined( TAPs_USE_EXPORT )
    #include "TAPsHelpCreateHalfEdgeModel.cpp"
//#endif
//-----------------------------------------------------------------------------
#endif
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