TAPsConverter.hpp

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/******************************************************************************
TAPsConverter.hpp

Converter class is a static class.

u and v directions are shown below
         ---u-->
         0 1 2 3
     | 0 * * * *
     | 1 * * * *
     v 2 * * * *
     | 3 * * * *
     v 4 * * * *
where u first then v, i.e. can regard u as a column vector


SUKITTI PUNAK   (04/22/2005)
UPDATE          (04/25/2005)
******************************************************************************/
#ifndef TAPs_CONVERTER_HPP
#define TAPs_CONVERTER_HPP

#include "../Core/TAPsVector3.hpp"

BEGIN_NAMESPACE_TAPs
//=============================================================================
template <typename T>
class Converter {
//=============================================================================
private:
    //int m_iOrig;  // original (from) vertex
    //int m_iDest;  // destination (to) vertex
//=============================================================================
public:
    //-------------------------------------------------------------------------
    // A 3x4 Bezier Patch example (u is 3 and v is 4)
    //     ---u-->
    //     0 1 2 3
    // | 0 * * * *
    // | 1 * * * *
    // v 2 * * * *
    // | 3 * * * *
    // v 4 * * * *
    // controlPts is the pointer to the control points 
    //   with each point is a T array of size 3 for x, y, and z.
    // uSub and vSub are the number of quads in u and v direction respectively
    static Point3<T> * ConvertABezierPatchToAQuadMesh ( Point3<T> * bPts, 
                                                        int uDegree, int vDegree, 
                                                        int uSub, int vSub );
private:
    //-------------------------------------------------------------------------
    // A recursive algorithm
    // b00 ---- bU0
    //  |  *      |
    //  | (u,v)   |
    // b0V ---- bUV
    static void deCasteljauBiLinear ( T u, T v, int U, int V,   // i/p
                                    Point3<T> * bPts_ip,        // i/o or control pts
                                    Point3<T> * bPts_op,        // i/o
                                    Point3<T> * meshPt );       // o/p
    static void deCasteljauBiLinearRec ( T u, T v, int U, int V,    // i/p
                                        Point3<T> * bPts_ip,        // i/p
                                        Point3<T> * bPts_op,        // o/p
                                        Point3<T> * meshPt );       // o/p
public:
    //-------------------------------------------------------------------------
    // Write to a 10 format file
    //     ---u-->
    //     0 1 2 3
    // | 0 * * * *
    // | 1 * * * *
    // v 2 * * * *
    // | 3 * * * *
    // v 4 * * * *
    static bool WriteGridPtsAsQuadMeshToA10FormatFile ( 
                Point3<T> * gridPts, int uSize, int vSize, char * outFileName );
    static bool WriteGridPtsAsTriMeshToA10FormatFile ( 
                Point3<T> * gridPts, int uSize, int vSize, char * outFileName );
    static bool WriteGridPtsAsTriMeshToA10FormatFile2 ( 
                Point3<T> * gridPts, int uSize, int vSize, char * outFileName );
    //-------------------------------------------------------------------------
    static Point3<T> * ReadABezierPatchFromFile ( 
                char * inFileName,              // i/p
                int &uDegree, int &vDegree );   // o/p
    static bool SpecialFnToCreateA10FormatFileFromHegDataFile ( int uSize, int vSize );
    //-------------------------------------------------------------------------
}; // END CLASS BezierToLinear
//=============================================================================
END_NAMESPACE_TAPs
//-----------------------------------------------------------------------------
// Include definition if TAPs_USE_EXPORT is not defined
//#if !defined( TAPs_USE_EXPORT )
    #include "TAPsConverter.cpp"
//#endif
//-----------------------------------------------------------------------------
#endif
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